Merge branch 'develop' into bthomee/pragma

Unity builds were intended to speed up builds, by bundling multiple files into compilation units. However, now that ccache is available on all platforms, there is no need for unity builds anymore, as ccache stores compiled individual build objects for reuse. This change therefore removes the ability to make unity builds.

.github/scripts/levelization/results/ordering.txt

@@ -153,6 +153,7 @@ tests.libxrpl > xrpl.json
 tests.libxrpl > xrpl.net
 xrpl.core > xrpl.basics
 xrpl.core > xrpl.json
+xrpl.core > xrpl.ledger
 xrpl.json > xrpl.basics
 xrpl.ledger > xrpl.basics
 xrpl.ledger > xrpl.protocol

.github/scripts/rename/include.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# This script checks whether there are no new include guards introduced by a new
+# PR, as header files should use "#pragma once" instead. The script assumes any
+# include guards will use "XRPL_" as prefix.
+# Usage: .github/scripts/rename/include.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+
+find "${DIRECTORY}" -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.ipp" \) | while read -r FILE; do
+    echo "Processing file: ${FILE}"
+    if grep -q "#ifndef XRPL_" "${FILE}"; then
+      echo "Please replace all include guards by #pragma once."
+      exit 1
+    fi
+done
+echo "Checking complete."

.github/scripts/strategy-matrix/generate.py

@@ -51,22 +51,20 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
         # Only generate a subset of configurations in PRs.
         if not all:
             # Debian:
-            # - Bookworm using GCC 13: Release and Unity on linux/amd64, set
-            #   the reference fee to 500.
-            # - Bookworm using GCC 15: Debug and no Unity on linux/amd64, enable
-            #   code coverage (which will be done below).
-            # - Bookworm using Clang 16: Debug and no Unity on linux/arm64,
-            #   enable voidstar.
-            # - Bookworm using Clang 17: Release and no Unity on linux/amd64,
-            #   set the reference fee to 1000.
-            # - Bookworm using Clang 20: Debug and Unity on linux/amd64.
+            # - Bookworm using GCC 13: Release on linux/amd64, set the reference
+            #   fee to 500.
+            # - Bookworm using GCC 15: Debug on linux/amd64, enable code
+            #   coverage (which will be done below).
+            # - Bookworm using Clang 16: Debug on linux/arm64, enable voidstar.
+            # - Bookworm using Clang 17: Release on linux/amd64, set the
+            #   reference fee to 1000.
+            # - Bookworm using Clang 20: Debug on linux/amd64.
             if os["distro_name"] == "debian":
                 skip = True
                 if os["distro_version"] == "bookworm":
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "gcc-13"
                         and build_type == "Release"
-                        and "-Dunity=ON" in cmake_args
                         and architecture["platform"] == "linux/amd64"
                     ):
                         cmake_args = f"-DUNIT_TEST_REFERENCE_FEE=500 {cmake_args}"
@@ -74,14 +72,12 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "gcc-15"
                         and build_type == "Debug"
-                        and "-Dunity=OFF" in cmake_args
                         and architecture["platform"] == "linux/amd64"
                     ):
                         skip = False
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "clang-16"
                         and build_type == "Debug"
-                        and "-Dunity=OFF" in cmake_args
                         and architecture["platform"] == "linux/arm64"
                     ):
                         cmake_args = f"-Dvoidstar=ON {cmake_args}"
@@ -89,7 +85,6 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "clang-17"
                         and build_type == "Release"
-                        and "-Dunity=ON" in cmake_args
                         and architecture["platform"] == "linux/amd64"
                     ):
                         cmake_args = f"-DUNIT_TEST_REFERENCE_FEE=1000 {cmake_args}"
@@ -97,7 +92,6 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "clang-20"
                         and build_type == "Debug"
-                        and "-Dunity=ON" in cmake_args
                         and architecture["platform"] == "linux/amd64"
                     ):
                         skip = False
@@ -105,15 +99,14 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
                     continue
 
             # RHEL:
-            # - 9 using GCC 12: Debug and Unity on linux/amd64.
-            # - 10 using Clang: Release and no Unity on linux/amd64.
+            # - 9 using GCC 12: Debug on linux/amd64.
+            # - 10 using Clang: Release on linux/amd64.
             if os["distro_name"] == "rhel":
                 skip = True
                 if os["distro_version"] == "9":
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "gcc-12"
                         and build_type == "Debug"
-                        and "-Dunity=ON" in cmake_args
                         and architecture["platform"] == "linux/amd64"
                     ):
                         skip = False
@@ -121,7 +114,6 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "clang-any"
                         and build_type == "Release"
-                        and "-Dunity=OFF" in cmake_args
                         and architecture["platform"] == "linux/amd64"
                     ):
                         skip = False
@@ -129,17 +121,16 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
                     continue
 
             # Ubuntu:
-            # - Jammy using GCC 12: Debug and no Unity on linux/arm64.
-            # - Noble using GCC 14: Release and Unity on linux/amd64.
-            # - Noble using Clang 18: Debug and no Unity on linux/amd64.
-            # - Noble using Clang 19: Release and Unity on linux/arm64.
+            # - Jammy using GCC 12: Debug on linux/arm64.
+            # - Noble using GCC 14: Release on linux/amd64.
+            # - Noble using Clang 18: Debug on linux/amd64.
+            # - Noble using Clang 19: Release on linux/arm64.
             if os["distro_name"] == "ubuntu":
                 skip = True
                 if os["distro_version"] == "jammy":
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "gcc-12"
                         and build_type == "Debug"
-                        and "-Dunity=OFF" in cmake_args
                         and architecture["platform"] == "linux/arm64"
                     ):
                         skip = False
@@ -147,21 +138,18 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "gcc-14"
                         and build_type == "Release"
-                        and "-Dunity=ON" in cmake_args
                         and architecture["platform"] == "linux/amd64"
                     ):
                         skip = False
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "clang-18"
                         and build_type == "Debug"
-                        and "-Dunity=OFF" in cmake_args
                         and architecture["platform"] == "linux/amd64"
                     ):
                         skip = False
                     if (
                         f"{os['compiler_name']}-{os['compiler_version']}" == "clang-19"
                         and build_type == "Release"
-                        and "-Dunity=ON" in cmake_args
                         and architecture["platform"] == "linux/arm64"
                     ):
                         skip = False
@@ -169,20 +157,16 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
                     continue
 
             # MacOS:
-            # - Debug and no Unity on macos/arm64.
+            # - Debug on macos/arm64.
             if os["distro_name"] == "macos" and not (
-                build_type == "Debug"
-                and "-Dunity=OFF" in cmake_args
-                and architecture["platform"] == "macos/arm64"
+                build_type == "Debug" and architecture["platform"] == "macos/arm64"
             ):
                 continue
 
             # Windows:
-            # - Release and Unity on windows/amd64.
+            # - Release on windows/amd64.
             if os["distro_name"] == "windows" and not (
-                build_type == "Release"
-                and "-Dunity=ON" in cmake_args
-                and architecture["platform"] == "windows/amd64"
+                build_type == "Release" and architecture["platform"] == "windows/amd64"
             ):
                 continue
 
@@ -209,18 +193,17 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
         ):
             continue
 
-        # Enable code coverage for Debian Bookworm using GCC 15 in Debug and no
-        # Unity on linux/amd64
+        # Enable code coverage for Debian Bookworm using GCC 15 in Debug on
+        # linux/amd64
         if (
             f"{os['compiler_name']}-{os['compiler_version']}" == "gcc-15"
             and build_type == "Debug"
-            and "-Dunity=OFF" in cmake_args
             and architecture["platform"] == "linux/amd64"
         ):
             cmake_args = f"-Dcoverage=ON -Dcoverage_format=xml -DCODE_COVERAGE_VERBOSE=ON -DCMAKE_C_FLAGS=-O0 -DCMAKE_CXX_FLAGS=-O0 {cmake_args}"
 
         # Generate a unique name for the configuration, e.g. macos-arm64-debug
-        # or debian-bookworm-gcc-12-amd64-release-unity.
+        # or debian-bookworm-gcc-12-amd64-release.
         config_name = os["distro_name"]
         if (n := os["distro_version"]) != "":
             config_name += f"-{n}"
@@ -234,8 +217,6 @@ def generate_strategy_matrix(all: bool, config: Config) -> list:
         config_name += f"-{build_type.lower()}"
         if "-Dcoverage=ON" in cmake_args:
             config_name += "-coverage"
-        if "-Dunity=ON" in cmake_args:
-            config_name += "-unity"
 
         # Add the configuration to the list, with the most unique fields first,
         # so that they are easier to identify in the GitHub Actions UI, as long

.github/scripts/strategy-matrix/linux.json

@@ -208,5 +208,5 @@
     }
   ],
   "build_type": ["Debug", "Release"],
-  "cmake_args": ["-Dunity=OFF", "-Dunity=ON"]
+  "cmake_args": [""]
 }

.github/scripts/strategy-matrix/macos.json

@@ -15,8 +15,5 @@
     }
   ],
   "build_type": ["Debug", "Release"],
-  "cmake_args": [
-    "-Dunity=OFF -DCMAKE_POLICY_VERSION_MINIMUM=3.5",
-    "-Dunity=ON -DCMAKE_POLICY_VERSION_MINIMUM=3.5"
-  ]
+  "cmake_args": ["-DCMAKE_POLICY_VERSION_MINIMUM=3.5"]
 }

.github/scripts/strategy-matrix/windows.json

@@ -15,5 +15,5 @@
     }
   ],
   "build_type": ["Debug", "Release"],
-  "cmake_args": ["-Dunity=OFF", "-Dunity=ON"]
+  "cmake_args": [""]
 }

.github/workflows/pre-commit.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   # Call the workflow in the XRPLF/actions repo that runs the pre-commit hooks.
   run-hooks:
-    uses: XRPLF/actions/.github/workflows/pre-commit.yml@282890f46d6921249d5659dd38babcb0bd8aef48
+    uses: XRPLF/actions/.github/workflows/pre-commit.yml@320be44621ca2a080f05aeb15817c44b84518108
     with:
       runs_on: ubuntu-latest
       container: '{ "image": "ghcr.io/xrplf/ci/tools-rippled-pre-commit:sha-ab4d1f0" }'

.github/workflows/publish-docs.yml

@@ -36,7 +36,7 @@ jobs:
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
 
       - name: Get number of processors
-        uses: XRPLF/actions/get-nproc@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
         id: nproc
         with:
           subtract: ${{ env.NPROC_SUBTRACT }}

.github/workflows/reusable-build-test-config.yml

@@ -101,13 +101,13 @@ jobs:
     steps:
       - name: Cleanup workspace (macOS and Windows)
         if: ${{ runner.os == 'macOS' || runner.os == 'Windows' }}
-        uses: XRPLF/actions/cleanup-workspace@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/cleanup-workspace@cf0433aa74563aead044a1e395610c96d65a37cf
 
       - name: Checkout repository
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
 
       - name: Prepare runner
-        uses: XRPLF/actions/prepare-runner@f05cab7b8541eee6473aa42beb9d2fe35608a190
+        uses: XRPLF/actions/prepare-runner@2cbf481018d930656e9276fcc20dc0e3a0be5b6d
         with:
           enable_ccache: ${{ inputs.ccache_enabled }}
 
@@ -119,7 +119,7 @@ jobs:
         uses: ./.github/actions/print-env
 
       - name: Get number of processors
-        uses: XRPLF/actions/get-nproc@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
         id: nproc
         with:
           subtract: ${{ inputs.nproc_subtract }}

.github/workflows/reusable-check-rename.yml

@@ -31,6 +31,8 @@ jobs:
         run: .github/scripts/rename/namespace.sh .
       - name: Check config name
         run: .github/scripts/rename/config.sh .
+      - name: Check include guards
+        run: .github/scripts/rename/include.sh .
       - name: Check for differences
         env:
           MESSAGE: |

.github/workflows/upload-conan-deps.yml

@@ -64,13 +64,13 @@ jobs:
     steps:
       - name: Cleanup workspace (macOS and Windows)
         if: ${{ runner.os == 'macOS' || runner.os == 'Windows' }}
-        uses: XRPLF/actions/cleanup-workspace@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/cleanup-workspace@cf0433aa74563aead044a1e395610c96d65a37cf
 
       - name: Checkout repository
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
 
       - name: Prepare runner
-        uses: XRPLF/actions/prepare-runner@f05cab7b8541eee6473aa42beb9d2fe35608a190
+        uses: XRPLF/actions/prepare-runner@2cbf481018d930656e9276fcc20dc0e3a0be5b6d
         with:
           enable_ccache: false
 
@@ -78,7 +78,7 @@ jobs:
         uses: ./.github/actions/print-env
 
       - name: Get number of processors
-        uses: XRPLF/actions/get-nproc@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
         id: nproc
         with:
           subtract: ${{ env.NPROC_SUBTRACT }}

.gitignore

@@ -64,6 +64,9 @@ DerivedData
 /.vs/
 /.vscode/
 
+# zed IDE.
+/.zed/
+
 # AI tools.
 /.augment
 /.claude

API-CHANGELOG.md

@@ -6,90 +6,85 @@ For info about how [API versioning](https://xrpl.org/request-formatting.html#api
 
 The API version controls the API behavior you see. This includes what properties you see in responses, what parameters you're permitted to send in requests, and so on. You specify the API version in each of your requests. When a breaking change is introduced to the `rippled` API, a new version is released. To avoid breaking your code, you should set (or increase) your version when you're ready to upgrade.
 
+The [commandline](https://xrpl.org/docs/references/http-websocket-apis/api-conventions/request-formatting/#commandline-format) always uses the latest API version. The command line is intended for ad-hoc usage by humans, not programs or automated scripts. The command line is not meant for use in production code.
+
 For a log of breaking changes, see the **API Version [number]** headings. In general, breaking changes are associated with a particular API Version number. For non-breaking changes, scroll to the **XRP Ledger version [x.y.z]** headings. Non-breaking changes are associated with a particular XRP Ledger (`rippled`) release.
 
+## API Version 3 (Beta)
+
+API version 3 is currently a beta API. It requires enabling `[beta_rpc_api]` in the rippled configuration to use. See [API-VERSION-3.md](API-VERSION-3.md) for the full list of changes in API version 3.
+
 ## API Version 2
 
-API version 2 is available in `rippled` version 2.0.0 and later. To use this API, clients specify `"api_version" : 2` in each request.
-
-#### Removed methods
-
-In API version 2, the following deprecated methods are no longer available: (https://github.com/XRPLF/rippled/pull/4759)
-
-- `tx_history` - Instead, use other methods such as `account_tx` or `ledger` with the `transactions` field set to `true`.
-- `ledger_header` - Instead, use the `ledger` method.
-
-#### Modifications to JSON transaction element in V2
-
-In API version 2, JSON elements for transaction output have been changed and made consistent for all methods which output transactions. (https://github.com/XRPLF/rippled/pull/4775)
-This helps to unify the JSON serialization format of transactions. (https://github.com/XRPLF/clio/issues/722, https://github.com/XRPLF/rippled/issues/4727)
-
-- JSON transaction element is named `tx_json`
-- Binary transaction element is named `tx_blob`
-- JSON transaction metadata element is named `meta`
-- Binary transaction metadata element is named `meta_blob`
-
-Additionally, these elements are now consistently available next to `tx_json` (i.e. sibling elements), where possible:
-
-- `hash` - Transaction ID. This data was stored inside transaction output in API version 1, but in API version 2 is a sibling element.
-- `ledger_index` - Ledger index (only set on validated ledgers)
-- `ledger_hash` - Ledger hash (only set on closed or validated ledgers)
-- `close_time_iso` - Ledger close time expressed in ISO 8601 time format (only set on validated ledgers)
-- `validated` - Bool element set to `true` if the transaction is in a validated ledger, otherwise `false`
-
-This change affects the following methods:
-
-- `tx` - Transaction data moved into element `tx_json` (was inline inside `result`) or, if binary output was requested, moved from `tx` to `tx_blob`. Renamed binary transaction metadata element (if it was requested) from `meta` to `meta_blob`. Changed location of `hash` and added new elements
-- `account_tx` - Renamed transaction element from `tx` to `tx_json`. Renamed binary transaction metadata element (if it was requested) from `meta` to `meta_blob`. Changed location of `hash` and added new elements
-- `transaction_entry` - Renamed transaction metadata element from `metadata` to `meta`. Changed location of `hash` and added new elements
-- `subscribe` - Renamed transaction element from `transaction` to `tx_json`. Changed location of `hash` and added new elements
-- `sign`, `sign_for`, `submit` and `submit_multisigned` - Changed location of `hash` element.
-
-#### Modification to `Payment` transaction JSON schema
-
-When reading Payments, the `Amount` field should generally **not** be used. Instead, use [delivered_amount](https://xrpl.org/partial-payments.html#the-delivered_amount-field) to see the amount that the Payment delivered. To clarify its meaning, the `Amount` field is being renamed to `DeliverMax`. (https://github.com/XRPLF/rippled/pull/4733)
-
-- In `Payment` transaction type, JSON RPC field `Amount` is renamed to `DeliverMax`. To enable smooth client transition, `Amount` is still handled, as described below: (https://github.com/XRPLF/rippled/pull/4733)
-  - On JSON RPC input (e.g. `submit_multisigned` etc. methods), `Amount` is recognized as an alias to `DeliverMax` for both API version 1 and version 2 clients.
-  - On JSON RPC input, submitting both `Amount` and `DeliverMax` fields is allowed _only_ if they are identical; otherwise such input is rejected with `rpcINVALID_PARAMS` error.
-  - On JSON RPC output (e.g. `subscribe`, `account_tx` etc. methods), `DeliverMax` is present in both API version 1 and version 2.
-  - On JSON RPC output, `Amount` is only present in API version 1 and _not_ in version 2.
-
-#### Modifications to account_info response
-
-- `signer_lists` is returned in the root of the response. (In API version 1, it was nested under `account_data`.) (https://github.com/XRPLF/rippled/pull/3770)
-- When using an invalid `signer_lists` value, the API now returns an "invalidParams" error. (https://github.com/XRPLF/rippled/pull/4585)
-  - (`signer_lists` must be a boolean. In API version 1, strings were accepted and may return a normal response - i.e. as if `signer_lists` were `true`.)
-
-#### Modifications to [account_tx](https://xrpl.org/account_tx.html#account_tx) response
-
-- Using `ledger_index_min`, `ledger_index_max`, and `ledger_index` returns `invalidParams` because if you use `ledger_index_min` or `ledger_index_max`, then it does not make sense to also specify `ledger_index`. In API version 1, no error was returned. (https://github.com/XRPLF/rippled/pull/4571)
-  - The same applies for `ledger_index_min`, `ledger_index_max`, and `ledger_hash`. (https://github.com/XRPLF/rippled/issues/4545#issuecomment-1565065579)
-- Using a `ledger_index_min` or `ledger_index_max` beyond the range of ledgers that the server has:
-  - returns `lgrIdxMalformed` in API version 2. Previously, in API version 1, no error was returned. (https://github.com/XRPLF/rippled/issues/4288)
-- Attempting to use a non-boolean value (such as a string) for the `binary` or `forward` parameters returns `invalidParams` (`rpcINVALID_PARAMS`). Previously, in API version 1, no error was returned. (https://github.com/XRPLF/rippled/pull/4620)
-
-#### Modifications to [noripple_check](https://xrpl.org/noripple_check.html#noripple_check) response
-
-- Attempting to use a non-boolean value (such as a string) for the `transactions` parameter returns `invalidParams` (`rpcINVALID_PARAMS`). Previously, in API version 1, no error was returned. (https://github.com/XRPLF/rippled/pull/4620)
+API version 2 is available in `rippled` version 2.0.0 and later. See [API-VERSION-2.md](API-VERSION-2.md) for the full list of changes in API version 2.
 
 ## API Version 1
 
 This version is supported by all `rippled` versions. For WebSocket and HTTP JSON-RPC requests, it is currently the default API version used when no `api_version` is specified.
 
-The [commandline](https://xrpl.org/docs/references/http-websocket-apis/api-conventions/request-formatting/#commandline-format) always uses the latest API version. The command line is intended for ad-hoc usage by humans, not programs or automated scripts. The command line is not meant for use in production code.
+## XRP Ledger server version 3.1.0
 
-### Inconsistency: server_info - network_id
+[Version 3.1.0](https://github.com/XRPLF/rippled/releases/tag/3.1.0) was released on Jan 27, 2026.
 
-The `network_id` field was added in the `server_info` response in version 1.5.0 (2019), but it is not returned in [reporting mode](https://xrpl.org/rippled-server-modes.html#reporting-mode). However, use of reporting mode is now discouraged, in favor of using [Clio](https://github.com/XRPLF/clio) instead.
+### Additions in 3.1.0
+
+- `vault_info`: New RPC method to retrieve information about a specific vault (part of XLS-66 Lending Protocol). ([#6156](https://github.com/XRPLF/rippled/pull/6156))
+
+## XRP Ledger server version 3.0.0
+
+[Version 3.0.0](https://github.com/XRPLF/rippled/releases/tag/3.0.0) was released on Dec 9, 2025.
+
+### Additions in 3.0.0
+
+- `ledger_entry`: Supports all ledger entry types with dedicated parsers. ([#5237](https://github.com/XRPLF/rippled/pull/5237))
+- `ledger_entry`: New error codes `entryNotFound` and `unexpectedLedgerType` for more specific error handling. ([#5237](https://github.com/XRPLF/rippled/pull/5237))
+- `ledger_entry`: Improved error messages with more context (e.g., specifying which field is invalid or missing). ([#5237](https://github.com/XRPLF/rippled/pull/5237))
+- `ledger_entry`: Assorted bug fixes in RPC processing. ([#5237](https://github.com/XRPLF/rippled/pull/5237))
+- `simulate`: Supports additional metadata in the response. ([#5754](https://github.com/XRPLF/rippled/pull/5754))
+
+## XRP Ledger server version 2.6.2
+
+[Version 2.6.2](https://github.com/XRPLF/rippled/releases/tag/2.6.2) was released on Nov 19, 2025.
+
+This release contains bug fixes only and no API changes.
+
+## XRP Ledger server version 2.6.1
+
+[Version 2.6.1](https://github.com/XRPLF/rippled/releases/tag/2.6.1) was released on Sep 30, 2025.
+
+This release contains bug fixes only and no API changes.
+
+## XRP Ledger server version 2.6.0
+
+[Version 2.6.0](https://github.com/XRPLF/rippled/releases/tag/2.6.0) was released on Aug 27, 2025.
+
+### Additions in 2.6.0
+
+- `account_info`: Added `allowTrustLineLocking` flag in response. ([#5525](https://github.com/XRPLF/rippled/pull/5525))
+- `ledger`: Removed the type filter from the RPC command. ([#4934](https://github.com/XRPLF/rippled/pull/4934))
+- `subscribe` (`validations` stream): `network_id` is now included. ([#5579](https://github.com/XRPLF/rippled/pull/5579))
+- `subscribe` (`transactions` stream): `nftoken_id`, `nftoken_ids`, and `offer_id` are now included in transaction metadata. ([#5230](https://github.com/XRPLF/rippled/pull/5230))
+
+## XRP Ledger server version 2.5.1
+
+[Version 2.5.1](https://github.com/XRPLF/rippled/releases/tag/2.5.1) was released on Sep 17, 2025.
+
+This release contains bug fixes only and no API changes.
 
 ## XRP Ledger server version 2.5.0
 
-As of 2025-04-04, version 2.5.0 is in development. You can use a pre-release version by building from source or [using the `nightly` package](https://xrpl.org/docs/infrastructure/installation/install-rippled-on-ubuntu).
+[Version 2.5.0](https://github.com/XRPLF/rippled/releases/tag/2.5.0) was released on Jun 24, 2025.
 
 ### Additions and bugfixes in 2.5.0
 
-- `channel_authorize`: If `signing_support` is not enabled in the config, the RPC is disabled.
+- `tx`: Added `ctid` field to the response and improved error handling. ([#4738](https://github.com/XRPLF/rippled/pull/4738))
+- `ledger_entry`: Improved error messages in `permissioned_domain`. ([#5344](https://github.com/XRPLF/rippled/pull/5344))
+- `simulate`: Improved multi-sign usage. ([#5479](https://github.com/XRPLF/rippled/pull/5479))
+- `channel_authorize`: If `signing_support` is not enabled in the config, the RPC is disabled. ([#5385](https://github.com/XRPLF/rippled/pull/5385))
+- `subscribe` (admin): Removed webhook queue limit to prevent dropping notifications; reduced HTTP timeout from 10 minutes to 30 seconds. ([#5163](https://github.com/XRPLF/rippled/pull/5163))
+- `ledger_data` (gRPC): Fixed crashing issue with some invalid markers. ([#5137](https://github.com/XRPLF/rippled/pull/5137))
+- `account_lines`: Fixed error with `no_ripple` and `no_ripple_peer` sometimes showing up incorrectly. ([#5345](https://github.com/XRPLF/rippled/pull/5345))
+- `account_tx`: Fixed issue with incorrect CTIDs. ([#5408](https://github.com/XRPLF/rippled/pull/5408))
 
 ## XRP Ledger server version 2.4.0
 
@@ -97,11 +92,19 @@ As of 2025-04-04, version 2.5.0 is in development. You can use a pre-release ver
 
 ### Additions and bugfixes in 2.4.0
 
-- `ledger_entry`: `state` is added an alias for `ripple_state`.
-- `ledger_entry`: Enables case-insensitive filtering by canonical name in addition to case-sensitive filtering by RPC name.
-- `validators`: Added new field `validator_list_threshold` in response.
-- `simulate`: A new RPC that executes a [dry run of a transaction submission](https://github.com/XRPLF/XRPL-Standards/tree/master/XLS-0069d-simulate#2-rpc-simulate)
-- Signing methods autofill fees better and properly handle transactions that don't have a base fee, and will also autofill the `NetworkID` field.
+- `simulate`: A new RPC that executes a [dry run of a transaction submission](https://github.com/XRPLF/XRPL-Standards/tree/master/XLS-0069d-simulate#2-rpc-simulate). ([#5069](https://github.com/XRPLF/rippled/pull/5069))
+- Signing methods (`sign`, `sign_for`, `submit`): Autofill fees better, properly handle transactions without a base fee, and autofill the `NetworkID` field. ([#5069](https://github.com/XRPLF/rippled/pull/5069))
+- `ledger_entry`: `state` is added as an alias for `ripple_state`. ([#5199](https://github.com/XRPLF/rippled/pull/5199))
+- `ledger`, `ledger_data`, `account_objects`: Support filtering ledger entry types by their canonical names (case-insensitive). ([#5271](https://github.com/XRPLF/rippled/pull/5271))
+- `validators`: Added new field `validator_list_threshold` in response. ([#5112](https://github.com/XRPLF/rippled/pull/5112))
+- `server_info`: Added git commit hash info on admin connection. ([#5225](https://github.com/XRPLF/rippled/pull/5225))
+- `server_definitions`: Changed larger `UInt` serialized types to `Hash`. ([#5231](https://github.com/XRPLF/rippled/pull/5231))
+
+## XRP Ledger server version 2.3.1
+
+[Version 2.3.1](https://github.com/XRPLF/rippled/releases/tag/2.3.1) was released on Jan 29, 2025.
+
+This release contains bug fixes only and no API changes.
 
 ## XRP Ledger server version 2.3.0
 
@@ -109,19 +112,30 @@ As of 2025-04-04, version 2.5.0 is in development. You can use a pre-release ver
 
 ### Breaking changes in 2.3.0
 
-- `book_changes`: If the requested ledger version is not available on this node, a `ledgerNotFound` error is returned and the node does not attempt to acquire the ledger from the p2p network (as with other non-admin RPCs).
-
-Admins can still attempt to retrieve old ledgers with the `ledger_request` RPC.
+- `book_changes`: If the requested ledger version is not available on this node, a `ledgerNotFound` error is returned and the node does not attempt to acquire the ledger from the p2p network (as with other non-admin RPCs). Admins can still attempt to retrieve old ledgers with the `ledger_request` RPC.
 
 ### Additions and bugfixes in 2.3.0
 
-- `book_changes`: Returns a `validated` field in its response, which was missing in prior versions.
+- `book_changes`: Returns a `validated` field in its response. ([#5096](https://github.com/XRPLF/rippled/pull/5096))
+- `book_changes`: Accepts shortcut strings (`current`, `closed`, `validated`) for the `ledger_index` parameter. ([#5096](https://github.com/XRPLF/rippled/pull/5096))
+- `server_definitions`: Include `index` in response. ([#5190](https://github.com/XRPLF/rippled/pull/5190))
+- `account_nfts`: Fix issue where unassociated marker would return incorrect results. ([#5045](https://github.com/XRPLF/rippled/pull/5045))
+- `account_objects`: Fix issue where invalid marker would not return an error. ([#5046](https://github.com/XRPLF/rippled/pull/5046))
+- `account_objects`: Disallow filtering by ledger entry types that an account cannot hold. ([#5056](https://github.com/XRPLF/rippled/pull/5056))
+- `tx`: Allow lowercase CTID. ([#5049](https://github.com/XRPLF/rippled/pull/5049))
+- `feature`: Better error handling for invalid values of `feature`. ([#5063](https://github.com/XRPLF/rippled/pull/5063))
 
 ## XRP Ledger server version 2.2.0
 
 [Version 2.2.0](https://github.com/XRPLF/rippled/releases/tag/2.2.0) was released on Jun 5, 2024. The following additions are non-breaking (because they are purely additive):
 
-- The `feature` method now has a non-admin mode for users. (It was previously only available to admin connections.) The method returns an updated list of amendments, including their names and other information. ([#4781](https://github.com/XRPLF/rippled/pull/4781))
+- `feature`: Add a non-admin mode for users. (It was previously only available to admin connections.) The method returns an updated list of amendments, including their names and other information. ([#4781](https://github.com/XRPLF/rippled/pull/4781))
+
+## XRP Ledger server version 2.0.1
+
+[Version 2.0.1](https://github.com/XRPLF/rippled/releases/tag/2.0.1) was released on Jan 29, 2024. The following additions are non-breaking:
+
+- `path_find`: Fixes unbounded memory growth. ([#4822](https://github.com/XRPLF/rippled/pull/4822))
 
 ## XRP Ledger server version 2.0.0
 
@@ -129,24 +143,18 @@ Admins can still attempt to retrieve old ledgers with the `ledger_request` RPC.
 
 - `server_definitions`: A new RPC that generates a `definitions.json`-like output that can be used in XRPL libraries.
 - In `Payment` transactions, `DeliverMax` has been added. This is a replacement for the `Amount` field, which should not be used. Typically, the `delivered_amount` (in transaction metadata) should be used. To ease the transition, `DeliverMax` is present regardless of API version, since adding a field is non-breaking.
-- API version 2 has been moved from beta to supported, meaning that it is generally available (regardless of the `beta_rpc_api` setting).
-
-## XRP Ledger server version 2.2.0
-
-The following is a non-breaking addition to the API.
-
-- The `feature` method now has a non-admin mode for users. (It was previously only available to admin connections.) The method returns an updated list of amendments, including their names and other information. ([#4781](https://github.com/XRPLF/rippled/pull/4781))
+- API version 2 has been moved from beta to supported, meaning that it is generally available (regardless of the `beta_rpc_api` setting). The full list of changes is in [API-VERSION-2.md](API-VERSION-2.md).
 
 ## XRP Ledger server version 1.12.0
 
-[Version 1.12.0](https://github.com/XRPLF/rippled/releases/tag/1.12.0) was released on Sep 6, 2023. The following additions are non-breaking (because they are purely additive).
+[Version 1.12.0](https://github.com/XRPLF/rippled/releases/tag/1.12.0) was released on Sep 6, 2023. The following additions are non-breaking (because they are purely additive):
 
-- `server_info`: Added `ports`, an array which advertises the RPC and WebSocket ports. This information is also included in the `/crawl` endpoint (which calls `server_info` internally). `grpc` and `peer` ports are also included. (https://github.com/XRPLF/rippled/pull/4427)
+- `server_info`: Added `ports`, an array which advertises the RPC and WebSocket ports. This information is also included in the `/crawl` endpoint (which calls `server_info` internally). `grpc` and `peer` ports are also included. ([#4427](https://github.com/XRPLF/rippled/pull/4427))
   - `ports` contains objects, each containing a `port` for the listening port (a number string), and a `protocol` array listing the supported protocols on that port.
   - This allows crawlers to build a more detailed topology without needing to port-scan nodes.
   - (For peers and other non-admin clients, the info about admin ports is excluded.)
-- Clawback: The following additions are gated by the Clawback amendment (`featureClawback`). (https://github.com/XRPLF/rippled/pull/4553)
-  - Adds an [AccountRoot flag](https://xrpl.org/accountroot.html#accountroot-flags) called `lsfAllowTrustLineClawback` (https://github.com/XRPLF/rippled/pull/4617)
+- Clawback: The following additions are gated by the Clawback amendment (`featureClawback`). ([#4553](https://github.com/XRPLF/rippled/pull/4553))
+  - Adds an [AccountRoot flag](https://xrpl.org/accountroot.html#accountroot-flags) called `lsfAllowTrustLineClawback`. ([#4617](https://github.com/XRPLF/rippled/pull/4617))
     - Adds the corresponding `asfAllowTrustLineClawback` [AccountSet Flag](https://xrpl.org/accountset.html#accountset-flags) as well.
     - Clawback is disabled by default, so if an issuer desires the ability to claw back funds, they must use an `AccountSet` transaction to set the AllowTrustLineClawback flag. They must do this before creating any trust lines, offers, escrows, payment channels, or checks.
   - Adds the [Clawback transaction type](https://github.com/XRPLF/XRPL-Standards/blob/master/XLS-39d-clawback/README.md#331-clawback-transaction), containing these fields:
@@ -181,16 +189,16 @@ The following is a non-breaking addition to the API.
 
 ### Breaking changes in 1.11
 
-- Added the ability to mark amendments as obsolete. For the `feature` admin API, there is a new possible value for the `vetoed` field. (https://github.com/XRPLF/rippled/pull/4291)
+- Added the ability to mark amendments as obsolete. For the `feature` admin API, there is a new possible value for the `vetoed` field. ([#4291](https://github.com/XRPLF/rippled/pull/4291))
   - The value of `vetoed` can now be `true`, `false`, or `"Obsolete"`.
-- Removed the acceptance of seeds or public keys in place of account addresses. (https://github.com/XRPLF/rippled/pull/4404)
+- Removed the acceptance of seeds or public keys in place of account addresses. ([#4404](https://github.com/XRPLF/rippled/pull/4404))
   - This simplifies the API and encourages better security practices (i.e. seeds should never be sent over the network).
-- For the `ledger_data` method, when all entries are filtered out, the `state` field of the response is now an empty list (in other words, an empty array, `[]`). (Previously, it would return `null`.) While this is technically a breaking change, the new behavior is consistent with the documentation, so this is considered only a bug fix. (https://github.com/XRPLF/rippled/pull/4398)
+- For the `ledger_data` method, when all entries are filtered out, the `state` field of the response is now an empty list (in other words, an empty array, `[]`). (Previously, it would return `null`.) While this is technically a breaking change, the new behavior is consistent with the documentation, so this is considered only a bug fix. ([#4398](https://github.com/XRPLF/rippled/pull/4398))
 - If and when the `fixNFTokenRemint` amendment activates, there will be a new AccountRoot field, `FirstNFTSequence`. This field is set to the current account sequence when the account issues their first NFT. If an account has not issued any NFTs, then the field is not set. ([#4406](https://github.com/XRPLF/rippled/pull/4406))
   - There is a new account deletion restriction: an account can only be deleted if `FirstNFTSequence` + `MintedNFTokens` + `256` is less than the current ledger sequence.
   - This is potentially a breaking change if clients have logic for determining whether an account can be deleted.
 - NetworkID
-  - For sidechains and networks with a network ID greater than 1024, there is a new [transaction common field](https://xrpl.org/transaction-common-fields.html), `NetworkID`. (https://github.com/XRPLF/rippled/pull/4370)
+  - For sidechains and networks with a network ID greater than 1024, there is a new [transaction common field](https://xrpl.org/transaction-common-fields.html), `NetworkID`. ([#4370](https://github.com/XRPLF/rippled/pull/4370))
     - This field helps to prevent replay attacks and is now required for chains whose network ID is 1025 or higher.
     - The field must be omitted for Mainnet, so there is no change for Mainnet users.
   - There are three new local error codes:
@@ -200,10 +208,10 @@ The following is a non-breaking addition to the API.
 
 ### Additions and bug fixes in 1.11
 
-- Added `nftoken_id`, `nftoken_ids` and `offer_id` meta fields into NFT `tx` and `account_tx` responses. (https://github.com/XRPLF/rippled/pull/4447)
-- Added an `account_flags` object to the `account_info` method response. (https://github.com/XRPLF/rippled/pull/4459)
-- Added `NFTokenPages` to the `account_objects` RPC. (https://github.com/XRPLF/rippled/pull/4352)
-- Fixed: `marker` returned from the `account_lines` command would not work on subsequent commands. (https://github.com/XRPLF/rippled/pull/4361)
+- Added `nftoken_id`, `nftoken_ids` and `offer_id` meta fields into NFT `tx` and `account_tx` responses. ([#4447](https://github.com/XRPLF/rippled/pull/4447))
+- Added an `account_flags` object to the `account_info` method response. ([#4459](https://github.com/XRPLF/rippled/pull/4459))
+- Added `NFTokenPages` to the `account_objects` RPC. ([#4352](https://github.com/XRPLF/rippled/pull/4352))
+- Fixed: `marker` returned from the `account_lines` command would not work on subsequent commands. ([#4361](https://github.com/XRPLF/rippled/pull/4361))
 
 ## XRP Ledger server version 1.10.0
 

API-VERSION-2.md

@@ -0,0 +1,66 @@
+# API Version 2
+
+API version 2 is available in `rippled` version 2.0.0 and later. To use this API, clients specify `"api_version" : 2` in each request.
+
+For info about how [API versioning](https://xrpl.org/request-formatting.html#api-versioning) works, including examples, please view the [XLS-22d spec](https://github.com/XRPLF/XRPL-Standards/discussions/54). For details about the implementation of API versioning, view the [implementation PR](https://github.com/XRPLF/rippled/pull/3155). API versioning ensures existing integrations and users continue to receive existing behavior, while those that request a higher API version will experience new behavior.
+
+## Removed methods
+
+In API version 2, the following deprecated methods are no longer available: ([#4759](https://github.com/XRPLF/rippled/pull/4759))
+
+- `tx_history` - Instead, use other methods such as `account_tx` or `ledger` with the `transactions` field set to `true`.
+- `ledger_header` - Instead, use the `ledger` method.
+
+## Modifications to JSON transaction element in API version 2
+
+In API version 2, JSON elements for transaction output have been changed and made consistent for all methods which output transactions. ([#4775](https://github.com/XRPLF/rippled/pull/4775))
+This helps to unify the JSON serialization format of transactions. ([clio#722](https://github.com/XRPLF/clio/issues/722), [#4727](https://github.com/XRPLF/rippled/issues/4727))
+
+- JSON transaction element is named `tx_json`
+- Binary transaction element is named `tx_blob`
+- JSON transaction metadata element is named `meta`
+- Binary transaction metadata element is named `meta_blob`
+
+Additionally, these elements are now consistently available next to `tx_json` (i.e. sibling elements), where possible:
+
+- `hash` - Transaction ID. This data was stored inside transaction output in API version 1, but in API version 2 is a sibling element.
+- `ledger_index` - Ledger index (only set on validated ledgers)
+- `ledger_hash` - Ledger hash (only set on closed or validated ledgers)
+- `close_time_iso` - Ledger close time expressed in ISO 8601 time format (only set on validated ledgers)
+- `validated` - Bool element set to `true` if the transaction is in a validated ledger, otherwise `false`
+
+This change affects the following methods:
+
+- `tx` - Transaction data moved into element `tx_json` (was inline inside `result`) or, if binary output was requested, moved from `tx` to `tx_blob`. Renamed binary transaction metadata element (if it was requested) from `meta` to `meta_blob`. Changed location of `hash` and added new elements
+- `account_tx` - Renamed transaction element from `tx` to `tx_json`. Renamed binary transaction metadata element (if it was requested) from `meta` to `meta_blob`. Changed location of `hash` and added new elements
+- `transaction_entry` - Renamed transaction metadata element from `metadata` to `meta`. Changed location of `hash` and added new elements
+- `subscribe` - Renamed transaction element from `transaction` to `tx_json`. Changed location of `hash` and added new elements
+- `sign`, `sign_for`, `submit` and `submit_multisigned` - Changed location of `hash` element.
+
+## Modifications to `Payment` transaction JSON schema
+
+When reading Payments, the `Amount` field should generally **not** be used. Instead, use [delivered_amount](https://xrpl.org/partial-payments.html#the-delivered_amount-field) to see the amount that the Payment delivered. To clarify its meaning, the `Amount` field is being renamed to `DeliverMax`. ([#4733](https://github.com/XRPLF/rippled/pull/4733))
+
+- In `Payment` transaction type, JSON RPC field `Amount` is renamed to `DeliverMax`. To enable smooth client transition, `Amount` is still handled, as described below: ([#4733](https://github.com/XRPLF/rippled/pull/4733))
+  - On JSON RPC input (e.g. `submit_multisigned` etc. methods), `Amount` is recognized as an alias to `DeliverMax` for both API version 1 and version 2 clients.
+  - On JSON RPC input, submitting both `Amount` and `DeliverMax` fields is allowed _only_ if they are identical; otherwise such input is rejected with `rpcINVALID_PARAMS` error.
+  - On JSON RPC output (e.g. `subscribe`, `account_tx` etc. methods), `DeliverMax` is present in both API version 1 and version 2.
+  - On JSON RPC output, `Amount` is only present in API version 1 and _not_ in version 2.
+
+## Modifications to account_info response
+
+- `signer_lists` is returned in the root of the response. (In API version 1, it was nested under `account_data`.) ([#3770](https://github.com/XRPLF/rippled/pull/3770))
+- When using an invalid `signer_lists` value, the API now returns an "invalidParams" error. ([#4585](https://github.com/XRPLF/rippled/pull/4585))
+  - (`signer_lists` must be a boolean. In API version 1, strings were accepted and may return a normal response - i.e. as if `signer_lists` were `true`.)
+
+## Modifications to [account_tx](https://xrpl.org/account_tx.html#account_tx) response
+
+- Using `ledger_index_min`, `ledger_index_max`, and `ledger_index` returns `invalidParams` because if you use `ledger_index_min` or `ledger_index_max`, then it does not make sense to also specify `ledger_index`. In API version 1, no error was returned. ([#4571](https://github.com/XRPLF/rippled/pull/4571))
+  - The same applies for `ledger_index_min`, `ledger_index_max`, and `ledger_hash`. ([#4545](https://github.com/XRPLF/rippled/issues/4545#issuecomment-1565065579))
+- Using a `ledger_index_min` or `ledger_index_max` beyond the range of ledgers that the server has:
+  - returns `lgrIdxMalformed` in API version 2. Previously, in API version 1, no error was returned. ([#4288](https://github.com/XRPLF/rippled/issues/4288))
+- Attempting to use a non-boolean value (such as a string) for the `binary` or `forward` parameters returns `invalidParams` (`rpcINVALID_PARAMS`). Previously, in API version 1, no error was returned. ([#4620](https://github.com/XRPLF/rippled/pull/4620))
+
+## Modifications to [noripple_check](https://xrpl.org/noripple_check.html#noripple_check) response
+
+- Attempting to use a non-boolean value (such as a string) for the `transactions` parameter returns `invalidParams` (`rpcINVALID_PARAMS`). Previously, in API version 1, no error was returned. ([#4620](https://github.com/XRPLF/rippled/pull/4620))

API-VERSION-3.md

@@ -0,0 +1,27 @@
+# API Version 3
+
+API version 3 is currently a **beta API**. It requires enabling `[beta_rpc_api]` in the rippled configuration to use. To use this API, clients specify `"api_version" : 3` in each request.
+
+For info about how [API versioning](https://xrpl.org/request-formatting.html#api-versioning) works, including examples, please view the [XLS-22d spec](https://github.com/XRPLF/XRPL-Standards/discussions/54). For details about the implementation of API versioning, view the [implementation PR](https://github.com/XRPLF/rippled/pull/3155). API versioning ensures existing integrations and users continue to receive existing behavior, while those that request a higher API version will experience new behavior.
+
+## Breaking Changes
+
+### Modifications to `amm_info`
+
+The order of error checks has been changed to provide more specific error messages. ([#4924](https://github.com/XRPLF/rippled/pull/4924))
+
+- **Before (API v2)**: When sending an invalid account or asset to `amm_info` while other parameters are not set as expected, the method returns a generic `rpcINVALID_PARAMS` error.
+- **After (API v3)**: The same scenario returns a more specific error: `rpcISSUE_MALFORMED` for malformed assets or `rpcACT_MALFORMED` for malformed accounts.
+
+### Modifications to `ledger_entry`
+
+Added support for string shortcuts to look up fixed-location ledger entries using the `"index"` parameter. ([#5644](https://github.com/XRPLF/rippled/pull/5644))
+
+In API version 3, the following string values can be used with the `"index"` parameter:
+
+- `"index": "amendments"` - Returns the `Amendments` ledger entry
+- `"index": "fee"` - Returns the `FeeSettings` ledger entry
+- `"index": "nunl"` - Returns the `NegativeUNL` ledger entry
+- `"index": "hashes"` - Returns the "short" `LedgerHashes` ledger entry (recent ledger hashes)
+
+These shortcuts are only available in API version 3 and later. In API versions 1 and 2, these string values would result in an error.

BUILD.md

@@ -368,6 +368,36 @@ The workaround for this error is to add two lines to your profile:
 tools.build:cxxflags=['-DBOOST_ASIO_DISABLE_CONCEPTS']
 ```
 
+### Set Up Ccache
+
+To speed up repeated compilations, we recommend that you install
+[ccache](https://ccache.dev), a tool that wraps your compiler so that it can
+cache build objects locally.
+
+#### Linux
+
+You can install it using the package manager, e.g. `sudo apt install ccache`
+(Ubuntu) or `sudo dnf install ccache` (RHEL).
+
+#### macOS
+
+You can install it using Homebrew, i.e. `brew install ccache`.
+
+#### Windows
+
+You can install it using Chocolatey, i.e. `choco install ccache`. If you already
+have Ccache installed, then `choco upgrade ccache` will update it to the latest
+version. However, if you see an error such as:
+
+```
+terminate called after throwing an instance of 'std::bad_alloc'
+      what():  std::bad_alloc
+C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(617,5): error MSB6006: "cl.exe" exited with code 3.
+```
+
+then please install a specific version of Ccache that we know works, via: `choco
+install ccache --version 4.11.3 --allow-downgrade`.
+
 ### Build and Test
 
 1. Create a build directory and move into it.
@@ -545,16 +575,10 @@ See [Sanitizers docs](./docs/build/sanitizers.md) for more details.
 | `assert`   | OFF           | Enable assertions.                                             |
 | `coverage` | OFF           | Prepare the coverage report.                                   |
 | `tests`    | OFF           | Build tests.                                                   |
-| `unity`    | OFF           | Configure a unity build.                                       |
 | `xrpld`    | OFF           | Build the xrpld application, and not just the libxrpl library. |
 | `werr`     | OFF           | Treat compilation warnings as errors                           |
 | `wextra`   | OFF           | Enable additional compilation warnings                         |
 
-[Unity builds][5] may be faster for the first build
-(at the cost of much more memory) since they concatenate sources into fewer
-translation units. Non-unity builds may be faster for incremental builds,
-and can be helpful for detecting `#include` omissions.
-
 ## Troubleshooting
 
 ### Conan
@@ -621,7 +645,6 @@ If you want to experiment with a new package, follow these steps:
 [1]: https://github.com/conan-io/conan-center-index/issues/13168
 [2]: https://en.cppreference.com/w/cpp/compiler_support/20
 [3]: https://docs.conan.io/en/latest/getting_started.html
-[5]: https://en.wikipedia.org/wiki/Unity_build
 [6]: https://github.com/boostorg/beast/issues/2648
 [7]: https://github.com/boostorg/beast/issues/2661
 [gcovr]: https://gcovr.com/en/stable/getting-started.html

CONTRIBUTING.md

@@ -872,7 +872,8 @@ git push --delete upstream-push master-next
 11. [Create a new release on
     Github](https://github.com/XRPLF/rippled/releases). Be sure that
     "Set as the latest release" is checked.
-12. Finally [reverse merge the release into `develop`](#follow-up-reverse-merge).
+12. Open a PR to update the [API-CHANGELOG](API-CHANGELOG.md) and `API-VERSION-[n].md` with the changes for this release (if any are missing).
+13. Finally, [reverse merge the release into `develop`](#follow-up-reverse-merge).
 
 #### Special cases: point releases, hotfixes, etc.
 

cmake/CompilationEnv.cmake

@@ -51,7 +51,7 @@ set(is_amd64 FALSE)
 set(is_arm64 FALSE)
 if (CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|AMD64")
     set(is_amd64 TRUE)
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|arm64")
+elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|arm64|ARM64")
     set(is_arm64 TRUE)
 else ()
     message(FATAL_ERROR "Unknown architecture: ${CMAKE_SYSTEM_PROCESSOR}")

cmake/XrplAddTest.cmake

@@ -9,8 +9,5 @@ function (xrpl_add_test name)
 
     isolate_headers(${target} "${CMAKE_SOURCE_DIR}" "${CMAKE_SOURCE_DIR}/tests/${name}" PRIVATE)
 
-    # Make sure the test isn't optimized away in unity builds
-    set_target_properties(${target} PROPERTIES UNITY_BUILD_MODE GROUP UNITY_BUILD_BATCH_SIZE 0) # Adjust as needed
-
     add_test(NAME ${target} COMMAND ${target})
 endfunction ()

cmake/XrplCore.cmake

@@ -4,12 +4,7 @@
 
 include(target_protobuf_sources)
 
-# Protocol buffers cannot participate in a unity build,
-# because all the generated sources
-# define a bunch of `static const` variables with the same names,
-# so we just build them as a separate library.
 add_library(xrpl.libpb)
-set_target_properties(xrpl.libpb PROPERTIES UNITY_BUILD OFF)
 target_protobuf_sources(xrpl.libpb xrpl/proto LANGUAGE cpp IMPORT_DIRS include/xrpl/proto
                         PROTOS include/xrpl/proto/xrpl.proto)
 
@@ -160,12 +155,4 @@ if (xrpld)
         # antithesis_instrumentation.h, which is not exported as INTERFACE
         target_include_directories(xrpld PRIVATE ${CMAKE_SOURCE_DIR}/external/antithesis-sdk)
     endif ()
-
-    # any files that don't play well with unity should be added here
-    if (tests)
-        set_source_files_properties(
-            # these two seem to produce conflicts in beast teardown template methods
-            src/test/rpc/ValidatorRPC_test.cpp src/test/ledger/Invariants_test.cpp PROPERTIES SKIP_UNITY_BUILD_INCLUSION
-                                                                                              TRUE)
-    endif ()
 endif ()

cmake/XrplSettings.cmake

@@ -30,14 +30,6 @@ if (tests)
     endif ()
 endif ()
 
-option(unity "Creates a build using UNITY support in cmake." OFF)
-if (unity)
-    if (NOT is_ci)
-        set(CMAKE_UNITY_BUILD_BATCH_SIZE 15 CACHE STRING "")
-    endif ()
-    set(CMAKE_UNITY_BUILD ON CACHE BOOL "Do a unity build")
-endif ()
-
 if (is_clang AND is_linux)
     option(voidstar "Enable Antithesis instrumentation." OFF)
 endif ()

conanfile.py

@@ -23,7 +23,6 @@ class Xrpl(ConanFile):
         "shared": [True, False],
         "static": [True, False],
         "tests": [True, False],
-        "unity": [True, False],
         "xrpld": [True, False],
     }
 
@@ -55,7 +54,6 @@ class Xrpl(ConanFile):
         "shared": False,
         "static": True,
         "tests": False,
-        "unity": False,
         "xrpld": False,
         "date/*:header_only": True,
         "ed25519/*:shared": False,
@@ -168,7 +166,6 @@ class Xrpl(ConanFile):
         tc.variables["rocksdb"] = self.options.rocksdb
         tc.variables["BUILD_SHARED_LIBS"] = self.options.shared
         tc.variables["static"] = self.options.static
-        tc.variables["unity"] = self.options.unity
         tc.variables["xrpld"] = self.options.xrpld
         tc.generate()
 

convert_include_guards.py

@@ -0,0 +1,139 @@
+#!/usr/bin/env python3
+"""
+Script to replace include guards with #pragma once
+Handles guards starting with XRPL_, BEAST_, or TEST_
+"""
+
+import sys
+from pathlib import Path
+
+
+def convert_file(file_path, prefixes=None):
+    """
+    Convert a file from include guards to #pragma once
+
+    Args:
+        file_path: Path to the file to convert
+        prefixes: List of prefixes to match (e.g., ['XRPL_', 'BEAST_', 'TEST_'])
+                  If None, defaults to ['XRPL_', 'BEAST_', 'TEST_']
+
+    Returns True if the file was modified, False otherwise
+    """
+    if prefixes is None:
+        prefixes = ["XRPL_", "BEAST_", "TEST_"]
+
+    try:
+        with open(file_path, "r", encoding="utf-8") as f:
+            lines = f.readlines()
+    except Exception as e:
+        print(f"Error reading {file_path}: {e}", file=sys.stderr)
+        return False
+
+    if len(lines) < 3:
+        print(f"Skipping {file_path}: too few lines", file=sys.stderr)
+        return False
+
+    # Find the #ifndef with any of the specified prefixes
+    ifndef_idx = -1
+    define_idx = -1
+    found_prefix = None
+
+    for i, line in enumerate(lines):
+        stripped = line.strip()
+        for prefix in prefixes:
+            if stripped.startswith(f"#ifndef {prefix}"):
+                ifndef_idx = i
+                found_prefix = prefix
+                # The #define should be the next line
+                if i + 1 < len(lines) and lines[i + 1].strip().startswith(
+                    f"#define {prefix}"
+                ):
+                    define_idx = i + 1
+                break
+        if ifndef_idx != -1:
+            break
+
+    if ifndef_idx == -1 or define_idx == -1:
+        print(
+            f"No include guard with prefixes {prefixes} found in {file_path}",
+            file=sys.stderr,
+        )
+        return False
+
+    # Find the last #endif line
+    endif_idx = -1
+    for i in range(len(lines) - 1, -1, -1):
+        stripped = lines[i].strip()
+        if stripped.startswith("#endif"):
+            endif_idx = i
+            break
+
+    if endif_idx == -1:
+        print(f"No closing #endif found in {file_path}", file=sys.stderr)
+        return False
+
+    # Build the new content
+    new_lines = []
+
+    # Add everything before the #ifndef
+    new_lines.extend(lines[:ifndef_idx])
+
+    # Add #pragma once with exactly one empty line after it
+    new_lines.append("#pragma once\n")
+    new_lines.append("\n")
+
+    # Add everything between #define and #endif, but skip leading empty lines
+    content_lines = lines[define_idx + 1 : endif_idx]
+    # Skip leading empty lines
+    start_idx = 0
+    while start_idx < len(content_lines) and content_lines[start_idx].strip() == "":
+        start_idx += 1
+    new_lines.extend(content_lines[start_idx:])
+
+    # Add everything after #endif (usually just empty lines, but include it)
+    new_lines.extend(lines[endif_idx + 1 :])
+
+    # Remove trailing empty lines at the end, then ensure exactly one newline at end
+    while new_lines and new_lines[-1].strip() == "":
+        new_lines.pop()
+
+    if new_lines and not new_lines[-1].endswith("\n"):
+        new_lines[-1] += "\n"
+    else:
+        new_lines.append("\n")
+
+    # Write the file
+    try:
+        with open(file_path, "w", encoding="utf-8") as f:
+            f.writelines(new_lines)
+        print(f"Converted: {file_path}")
+        return True
+    except Exception as e:
+        print(f"Error writing {file_path}: {e}", file=sys.stderr)
+        return False
+
+
+def main():
+    if len(sys.argv) < 2:
+        print("Usage: python convert_include_guards.py <file1> [file2 ...]")
+        sys.exit(1)
+
+    files = sys.argv[1:]
+    success_count = 0
+    fail_count = 0
+
+    for file_path in files:
+        if convert_file(file_path):
+            success_count += 1
+        else:
+            fail_count += 1
+
+    print(
+        f"\nSummary: {success_count} files converted, {fail_count} files failed/unchanged"
+    )
+
+    return 0 if fail_count == 0 else 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())

include/xrpl/basics/Archive.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_ARCHIVE_H_INCLUDED
-#define XRPL_BASICS_ARCHIVE_H_INCLUDED
+#pragma once
 
 #include <boost/filesystem.hpp>
 
@@ -16,5 +15,3 @@ void
 extractTarLz4(boost::filesystem::path const& src, boost::filesystem::path const& dst);
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/BasicConfig.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_BASICCONFIG_H_INCLUDED
-#define XRPL_BASICS_BASICCONFIG_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/contract.h>
 
@@ -369,5 +368,3 @@ get_if_exists<bool>(Section const& section, std::string const& name, bool& v)
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/Blob.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_BLOB_H_INCLUDED
-#define XRPL_BASICS_BLOB_H_INCLUDED
+#pragma once
 
 #include <vector>
 
@@ -11,5 +10,3 @@ namespace xrpl {
 using Blob = std::vector<unsigned char>;
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/Buffer.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_BUFFER_H_INCLUDED
-#define XRPL_BASICS_BUFFER_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/Slice.h>
 #include <xrpl/beast/utility/instrumentation.h>
@@ -213,5 +212,3 @@ operator!=(Buffer const& lhs, Buffer const& rhs) noexcept
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/ByteUtilities.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_BYTEUTILITIES_H_INCLUDED
-#define XRPL_BASICS_BYTEUTILITIES_H_INCLUDED
+#pragma once
 
 namespace xrpl {
 
@@ -20,5 +19,3 @@ megabytes(T value) noexcept
 static_assert(kilobytes(2) == 2048, "kilobytes(2) == 2048");
 static_assert(megabytes(3) == 3145728, "megabytes(3) == 3145728");
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/CompressionAlgorithms.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_COMPRESSIONALGORITHMS_H_INCLUDED
-#define XRPL_COMPRESSIONALGORITHMS_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/contract.h>
 
@@ -133,5 +132,3 @@ lz4Decompress(InputStream& in, std::size_t inSize, std::uint8_t* decompressed, s
 }  // namespace compression_algorithms
 
 }  // namespace xrpl
-
-#endif  // XRPL_COMPRESSIONALGORITHMS_H_INCLUDED

include/xrpl/basics/CountedObject.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_COUNTEDOBJECT_H_INCLUDED
-#define XRPL_BASICS_COUNTEDOBJECT_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/type_name.h>
 
@@ -134,5 +133,3 @@ public:
 };
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/DecayingSample.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_DECAYINGSAMPLE_H_INCLUDED
-#define XRPL_BASICS_DECAYINGSAMPLE_H_INCLUDED
+#pragma once
 
 #include <chrono>
 #include <cmath>
@@ -130,5 +129,3 @@ private:
 };
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/Expected.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_EXPECTED_H_INCLUDED
-#define XRPL_BASICS_EXPECTED_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/contract.h>
 
@@ -229,5 +228,3 @@ public:
 };
 
 }  // namespace xrpl
-
-#endif  // XRPL_BASICS_EXPECTED_H_INCLUDED

include/xrpl/basics/FileUtilities.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_FILEUTILITIES_H_INCLUDED
-#define XRPL_BASICS_FILEUTILITIES_H_INCLUDED
+#pragma once
 
 #include <boost/filesystem.hpp>
 #include <boost/system/error_code.hpp>
@@ -18,5 +17,3 @@ void
 writeFileContents(boost::system::error_code& ec, boost::filesystem::path const& destPath, std::string const& contents);
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/IntrusivePointer.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_INTRUSIVEPOINTER_H_INCLUDED
-#define XRPL_BASICS_INTRUSIVEPOINTER_H_INCLUDED
+#pragma once
 
 #include <concepts>
 #include <cstdint>
@@ -485,4 +484,3 @@ dynamic_pointer_cast(TT const& v)
 }
 }  // namespace intr_ptr
 }  // namespace xrpl
-#endif

include/xrpl/basics/IntrusivePointer.ipp

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_INTRUSIVEPOINTER_IPP_INCLUDED
-#define XRPL_BASICS_INTRUSIVEPOINTER_IPP_INCLUDED
+#pragma once
 
 #include <xrpl/basics/IntrusivePointer.h>
 #include <xrpl/basics/IntrusiveRefCounts.h>
@@ -703,4 +702,3 @@ SharedWeakUnion<T>::unsafeReleaseNoStore()
 }
 
 }  // namespace xrpl
-#endif

include/xrpl/basics/IntrusiveRefCounts.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_INTRUSIVEREFCOUNTS_H_INCLUDED
-#define XRPL_BASICS_INTRUSIVEREFCOUNTS_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/utility/instrumentation.h>
 
@@ -461,4 +460,3 @@ partialDestructorFinished(T** o)
 //------------------------------------------------------------------------------
 
 }  // namespace xrpl
-#endif

include/xrpl/basics/KeyCache.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_KEYCACHE_H
-#define XRPL_BASICS_KEYCACHE_H
+#pragma once
 
 #include <xrpl/basics/TaggedCache.h>
 #include <xrpl/basics/base_uint.h>
@@ -9,5 +8,3 @@ namespace xrpl {
 using KeyCache = TaggedCache<uint256, int, true>;
 
 }  // namespace xrpl
-
-#endif  // XRPL_BASICS_KEYCACHE_H

include/xrpl/basics/LocalValue.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_LOCALVALUE_H_INCLUDED
-#define XRPL_BASICS_LOCALVALUE_H_INCLUDED
+#pragma once
 
 #include <boost/thread/tss.hpp>
 
@@ -107,5 +106,3 @@ LocalValue<T>::operator*()
         lvs->values.emplace(this, std::make_unique<detail::LocalValues::Value<T>>(t_)).first->second->get());
 }
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/Log.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_LOG_H_INCLUDED
-#define XRPL_BASICS_LOG_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/UnorderedContainers.h>
 #include <xrpl/beast/utility/Journal.h>
@@ -258,5 +257,3 @@ beast::Journal
 debugLog();
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/MathUtilities.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_MATHUTILITIES_H_INCLUDED
-#define XRPL_BASICS_MATHUTILITIES_H_INCLUDED
+#pragma once
 
 #include <algorithm>
 #include <cassert>
@@ -45,5 +44,3 @@ static_assert(calculatePercent(50'000'001, 100'000'000) == 51);
 static_assert(calculatePercent(99'999'999, 100'000'000) == 100);
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/Number.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_NUMBER_H_INCLUDED
-#define XRPL_BASICS_NUMBER_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/utility/instrumentation.h>
 
@@ -819,5 +818,3 @@ public:
 };
 
 }  // namespace xrpl
-
-#endif  // XRPL_BASICS_NUMBER_H_INCLUDED

include/xrpl/basics/RangeSet.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_RANGESET_H_INCLUDED
-#define XRPL_BASICS_RANGESET_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/core/LexicalCast.h>
 
@@ -173,5 +172,3 @@ prevMissing(RangeSet<T> const& rs, T t, T minVal = 0)
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/Resolver.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_RESOLVER_H_INCLUDED
-#define XRPL_BASICS_RESOLVER_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/net/IPEndpoint.h>
 
@@ -45,5 +44,3 @@ public:
 };
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/ResolverAsio.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_RESOLVERASIO_H_INCLUDED
-#define XRPL_BASICS_RESOLVERASIO_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/Resolver.h>
 #include <xrpl/beast/utility/Journal.h>
@@ -18,5 +17,3 @@ public:
 };
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/SHAMapHash.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_SHAMAP_HASH_H_INCLUDED
-#define XRPL_BASICS_SHAMAP_HASH_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/base_uint.h>
 #include <xrpl/basics/partitioned_unordered_map.h>
@@ -98,5 +97,3 @@ extract(SHAMapHash const& key)
 }
 
 }  // namespace xrpl
-
-#endif  // XRPL_BASICS_SHAMAP_HASH_H_INCLUDED

include/xrpl/basics/SharedWeakCachePointer.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_SHAREDWEAKCACHEPOINTER_H_INCLUDED
-#define XRPL_BASICS_SHAREDWEAKCACHEPOINTER_H_INCLUDED
+#pragma once
 
 #include <memory>
 #include <variant>
@@ -113,4 +112,3 @@ private:
     std::variant<std::shared_ptr<T>, std::weak_ptr<T>> combo_;
 };
 }  // namespace xrpl
-#endif

include/xrpl/basics/SharedWeakCachePointer.ipp

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_SHAREDWEAKCACHEPOINTER_IPP_INCLUDED
-#define XRPL_BASICS_SHAREDWEAKCACHEPOINTER_IPP_INCLUDED
+#pragma once
 
 #include <xrpl/basics/SharedWeakCachePointer.h>
 
@@ -164,4 +163,3 @@ SharedWeakCachePointer<T>::convertToWeak()
     return false;
 }
 }  // namespace xrpl
-#endif

include/xrpl/basics/SlabAllocator.h

@@ -1,7 +1,6 @@
 // Copyright (c) 2022, Nikolaos D. Bougalis <nikb@bougalis.net>
 
-#ifndef XRPL_BASICS_SLABALLOCATOR_H_INCLUDED
-#define XRPL_BASICS_SLABALLOCATOR_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/ByteUtilities.h>
 #include <xrpl/beast/type_name.h>
@@ -386,5 +385,3 @@ public:
 };
 
 }  // namespace xrpl
-
-#endif  // XRPL_BASICS_SLABALLOCATOR_H_INCLUDED

include/xrpl/basics/Slice.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_SLICE_H_INCLUDED
-#define XRPL_BASICS_SLICE_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/contract.h>
 #include <xrpl/basics/strHex.h>
@@ -231,5 +230,3 @@ makeSlice(std::basic_string<char, Traits, Alloc> const& s)
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/StringUtilities.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_STRINGUTILITIES_H_INCLUDED
-#define XRPL_BASICS_STRINGUTILITIES_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/Blob.h>
 #include <xrpl/basics/strHex.h>
@@ -132,5 +131,3 @@ bool
 isProperlyFormedTomlDomain(std::string_view domain);
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/TaggedCache.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_TAGGEDCACHE_H_INCLUDED
-#define XRPL_BASICS_TAGGEDCACHE_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/IntrusivePointer.h>
 #include <xrpl/basics/Log.h>
@@ -298,5 +297,3 @@ private:
 };
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/TaggedCache.ipp

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_TAGGEDCACHE_IPP_INCLUDED
-#define XRPL_BASICS_TAGGEDCACHE_IPP_INCLUDED
+#pragma once
 
 #include <xrpl/basics/IntrusivePointer.ipp>
 #include <xrpl/basics/TaggedCache.h>
@@ -784,5 +783,3 @@ TaggedCache<Key, T, IsKeyCache, SharedWeakUnionPointer, SharedPointerType, Hash,
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/ToString.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_TOSTRING_H_INCLUDED
-#define XRPL_BASICS_TOSTRING_H_INCLUDED
+#pragma once
 
 #include <string>
 #include <type_traits>
@@ -44,5 +43,3 @@ to_string(char const* s)
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/UnorderedContainers.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_UNORDEREDCONTAINERS_H_INCLUDED
-#define XRPL_BASICS_UNORDEREDCONTAINERS_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/hardened_hash.h>
 #include <xrpl/basics/partitioned_unordered_map.h>
@@ -99,5 +98,3 @@ template <
 using hardened_hash_multiset = std::unordered_multiset<Value, Hash, Pred, Allocator>;
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/UptimeClock.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_UPTIMETIMER_H_INCLUDED
-#define XRPL_BASICS_UPTIMETIMER_H_INCLUDED
+#pragma once
 
 #include <atomic>
 #include <chrono>
@@ -46,5 +45,3 @@ private:
 };
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/algorithm.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_ALGORITHM_H_INCLUDED
-#define XRPL_ALGORITHM_H_INCLUDED
+#pragma once
 
 #include <utility>
 
@@ -90,5 +89,3 @@ remove_if_intersect_or_match(FwdIter1 first1, FwdIter1 last1, InputIter2 first2,
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/base64.h

@@ -32,8 +32,7 @@
 
 */
 
-#ifndef XRPL_BASICS_BASE64_H_INCLUDED
-#define XRPL_BASICS_BASE64_H_INCLUDED
+#pragma once
 
 #include <cstdint>
 #include <string>
@@ -53,5 +52,3 @@ std::string
 base64_decode(std::string_view data);
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/base_uint.h

@@ -3,8 +3,7 @@
 // Distributed under the MIT/X11 software license, see the accompanying
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 
-#ifndef XRPL_BASICS_BASE_UINT_H_INCLUDED
-#define XRPL_BASICS_BASE_UINT_H_INCLUDED
+#pragma once
 
 #include <xrpl/basics/Expected.h>
 #include <xrpl/basics/Slice.h>
@@ -644,5 +643,3 @@ struct is_uniquely_represented<xrpl::base_uint<Bits, Tag>> : public std::true_ty
 };
 
 }  // namespace beast
-
-#endif

include/xrpl/basics/chrono.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_CHRONO_H_INCLUDED
-#define XRPL_BASICS_CHRONO_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/clock/abstract_clock.h>
 #include <xrpl/beast/clock/basic_seconds_clock.h>
@@ -99,5 +98,3 @@ stopwatch()
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/comparators.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_COMPARATORS_H_INCLUDED
-#define XRPL_BASICS_COMPARATORS_H_INCLUDED
+#pragma once
 
 #include <functional>
 
@@ -53,5 +52,3 @@ using equal_to = std::equal_to<T>;
 #endif
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/contract.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_CONTRACT_H_INCLUDED
-#define XRPL_BASICS_CONTRACT_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/type_name.h>
 
@@ -48,5 +47,3 @@ Throw(Args&&... args)
 LogicError(std::string const& how) noexcept;
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/hardened_hash.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_HARDENED_HASH_H_INCLUDED
-#define XRPL_BASICS_HARDENED_HASH_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/hash/hash_append.h>
 #include <xrpl/beast/hash/xxhasher.h>
@@ -93,5 +92,3 @@ public:
 };
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/join.h

@@ -1,5 +1,4 @@
-#ifndef JOIN_H_INCLUDED
-#define JOIN_H_INCLUDED
+#pragma once
 
 #include <string>
 
@@ -80,5 +79,3 @@ public:
 };
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/make_SSLContext.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_MAKE_SSLCONTEXT_H_INCLUDED
-#define XRPL_BASICS_MAKE_SSLCONTEXT_H_INCLUDED
+#pragma once
 
 #include <boost/asio/ssl/context.hpp>
 
@@ -20,5 +19,3 @@ make_SSLContextAuthed(
     std::string const& cipherList);
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/mulDiv.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_MULDIV_H_INCLUDED
-#define XRPL_BASICS_MULDIV_H_INCLUDED
+#pragma once
 
 #include <cstdint>
 #include <limits>
@@ -22,5 +21,3 @@ std::optional<std::uint64_t>
 mulDiv(std::uint64_t value, std::uint64_t mul, std::uint64_t div);
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/partitioned_unordered_map.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_PARTITIONED_UNORDERED_MAP_H
-#define XRPL_BASICS_PARTITIONED_UNORDERED_MAP_H
+#pragma once
 
 #include <xrpl/beast/hash/uhash.h>
 #include <xrpl/beast/utility/instrumentation.h>
@@ -393,5 +392,3 @@ private:
 };
 
 }  // namespace xrpl
-
-#endif  // XRPL_BASICS_PARTITIONED_UNORDERED_MAP_H

include/xrpl/basics/random.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_RANDOM_H_INCLUDED
-#define XRPL_BASICS_RANDOM_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/utility/instrumentation.h>
 #include <xrpl/beast/xor_shift_engine.h>
@@ -174,5 +173,3 @@ rand_bool()
 /** @} */
 
 }  // namespace xrpl
-
-#endif  // XRPL_BASICS_RANDOM_H_INCLUDED

include/xrpl/basics/rocksdb.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_UNITY_ROCKSDB_H_INCLUDED
-#define XRPL_UNITY_ROCKSDB_H_INCLUDED
+#pragma once
 
 #if XRPL_ROCKSDB_AVAILABLE
 // #include <rocksdb2/port/port_posix.h>
@@ -28,5 +27,3 @@
 #include <rocksdb/write_batch.h>
 
 #endif
-
-#endif

include/xrpl/basics/safe_cast.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_SAFE_CAST_H_INCLUDED
-#define XRPL_BASICS_SAFE_CAST_H_INCLUDED
+#pragma once
 
 #include <type_traits>
 
@@ -69,5 +68,3 @@ unsafe_cast(Src s) noexcept
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/scope.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_SCOPE_H_INCLUDED
-#define XRPL_BASICS_SCOPE_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/utility/instrumentation.h>
 
@@ -220,5 +219,3 @@ template <class Mutex>
 scope_unlock(std::unique_lock<Mutex>&) -> scope_unlock<Mutex>;
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/spinlock.h

@@ -1,7 +1,6 @@
 // Copyright (c) 2022, Nikolaos D. Bougalis <nikb@bougalis.net>
 
-#ifndef XRPL_BASICS_SPINLOCK_H_INCLUDED
-#define XRPL_BASICS_SPINLOCK_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/utility/instrumentation.h>
 
@@ -201,5 +200,3 @@ public:
 /** @} */
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/strHex.h

@@ -1,5 +1,4 @@
-#ifndef XRPL_BASICS_STRHEX_H_INCLUDED
-#define XRPL_BASICS_STRHEX_H_INCLUDED
+#pragma once
 
 #include <boost/algorithm/hex.hpp>
 #include <boost/endian/conversion.hpp>
@@ -27,5 +26,3 @@ strHex(T const& from)
 }
 
 }  // namespace xrpl
-
-#endif

include/xrpl/basics/tagged_integer.h

@@ -1,7 +1,6 @@
 // Copyright (c) 2014, Nikolaos D. Bougalis <nikb@bougalis.net>
 
-#ifndef BEAST_UTILITY_TAGGED_INTEGER_H_INCLUDED
-#define BEAST_UTILITY_TAGGED_INTEGER_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/hash/hash_append.h>
 
@@ -202,4 +201,3 @@ struct is_contiguously_hashable<xrpl::tagged_integer<Int, Tag>, HashAlgorithm>
 };
 
 }  // namespace beast
-#endif

include/xrpl/beast/asio/io_latency_probe.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_ASIO_IO_LATENCY_PROBE_H_INCLUDED
-#define BEAST_ASIO_IO_LATENCY_PROBE_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/utility/instrumentation.h>
 
@@ -226,5 +225,3 @@ private:
 };
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/clock/abstract_clock.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CHRONO_ABSTRACT_CLOCK_H_INCLUDED
-#define BEAST_CHRONO_ABSTRACT_CLOCK_H_INCLUDED
+#pragma once
 
 namespace beast {
 
@@ -89,5 +88,3 @@ get_abstract_clock()
 }
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/clock/basic_seconds_clock.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CHRONO_BASIC_SECONDS_CLOCK_H_INCLUDED
-#define BEAST_CHRONO_BASIC_SECONDS_CLOCK_H_INCLUDED
+#pragma once
 
 #include <chrono>
 
@@ -33,5 +32,3 @@ public:
 };
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/clock/manual_clock.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CHRONO_MANUAL_CLOCK_H_INCLUDED
-#define BEAST_CHRONO_MANUAL_CLOCK_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/clock/abstract_clock.h>
 #include <xrpl/beast/utility/instrumentation.h>
@@ -75,5 +74,3 @@ public:
 };
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/container/aged_container.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_CONTAINER_H_INCLUDED
-#define BEAST_CONTAINER_AGED_CONTAINER_H_INCLUDED
+#pragma once
 
 #include <type_traits>
 
@@ -12,5 +11,3 @@ struct is_aged_container : std::false_type
 };
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/container/aged_container_utility.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_CONTAINER_UTILITY_H_INCLUDED
-#define BEAST_CONTAINER_AGED_CONTAINER_UTILITY_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/aged_container.h>
 
@@ -24,5 +23,3 @@ expire(AgedContainer& c, std::chrono::duration<Rep, Period> const& age)
 }
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/container/aged_map.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_MAP_H_INCLUDED
-#define BEAST_CONTAINER_AGED_MAP_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/detail/aged_ordered_container.h>
 
@@ -18,5 +17,3 @@ template <
 using aged_map = detail::aged_ordered_container<false, true, Key, T, Clock, Compare, Allocator>;
 
 }
-
-#endif

include/xrpl/beast/container/aged_multimap.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_MULTIMAP_H_INCLUDED
-#define BEAST_CONTAINER_AGED_MULTIMAP_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/detail/aged_ordered_container.h>
 
@@ -18,5 +17,3 @@ template <
 using aged_multimap = detail::aged_ordered_container<true, true, Key, T, Clock, Compare, Allocator>;
 
 }
-
-#endif

include/xrpl/beast/container/aged_multiset.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_MULTISET_H_INCLUDED
-#define BEAST_CONTAINER_AGED_MULTISET_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/detail/aged_ordered_container.h>
 
@@ -17,5 +16,3 @@ template <
 using aged_multiset = detail::aged_ordered_container<true, false, Key, void, Clock, Compare, Allocator>;
 
 }
-
-#endif

include/xrpl/beast/container/aged_set.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_SET_H_INCLUDED
-#define BEAST_CONTAINER_AGED_SET_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/detail/aged_ordered_container.h>
 
@@ -17,5 +16,3 @@ template <
 using aged_set = detail::aged_ordered_container<false, false, Key, void, Clock, Compare, Allocator>;
 
 }
-
-#endif

include/xrpl/beast/container/aged_unordered_map.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_UNORDERED_MAP_H_INCLUDED
-#define BEAST_CONTAINER_AGED_UNORDERED_MAP_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/detail/aged_unordered_container.h>
 
@@ -19,5 +18,3 @@ template <
 using aged_unordered_map = detail::aged_unordered_container<false, true, Key, T, Clock, Hash, KeyEqual, Allocator>;
 
 }
-
-#endif

include/xrpl/beast/container/aged_unordered_multimap.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_UNORDERED_MULTIMAP_H_INCLUDED
-#define BEAST_CONTAINER_AGED_UNORDERED_MULTIMAP_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/detail/aged_unordered_container.h>
 
@@ -19,5 +18,3 @@ template <
 using aged_unordered_multimap = detail::aged_unordered_container<true, true, Key, T, Clock, Hash, KeyEqual, Allocator>;
 
 }
-
-#endif

include/xrpl/beast/container/aged_unordered_multiset.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_UNORDERED_MULTISET_H_INCLUDED
-#define BEAST_CONTAINER_AGED_UNORDERED_MULTISET_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/detail/aged_unordered_container.h>
 
@@ -19,5 +18,3 @@ using aged_unordered_multiset =
     detail::aged_unordered_container<true, false, Key, void, Clock, Hash, KeyEqual, Allocator>;
 
 }
-
-#endif

include/xrpl/beast/container/aged_unordered_set.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_AGED_UNORDERED_SET_H_INCLUDED
-#define BEAST_CONTAINER_AGED_UNORDERED_SET_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/container/detail/aged_unordered_container.h>
 
@@ -18,5 +17,3 @@ template <
 using aged_unordered_set = detail::aged_unordered_container<false, false, Key, void, Clock, Hash, KeyEqual, Allocator>;
 
 }
-
-#endif

include/xrpl/beast/container/detail/aged_associative_container.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_DETAIL_AGED_ASSOCIATIVE_CONTAINER_H_INCLUDED
-#define BEAST_CONTAINER_DETAIL_AGED_ASSOCIATIVE_CONTAINER_H_INCLUDED
+#pragma once
 
 namespace beast {
 namespace detail {
@@ -33,5 +32,3 @@ struct aged_associative_container_extract_t<false>
 
 }  // namespace detail
 }  // namespace beast
-
-#endif

include/xrpl/beast/container/detail/aged_container_iterator.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_DETAIL_AGED_CONTAINER_ITERATOR_H_INCLUDED
-#define BEAST_CONTAINER_DETAIL_AGED_CONTAINER_ITERATOR_H_INCLUDED
+#pragma once
 
 #include <iterator>
 #include <type_traits>
@@ -146,5 +145,3 @@ private:
 }  // namespace detail
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/container/detail/aged_ordered_container.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_DETAIL_AGED_ORDERED_CONTAINER_H_INCLUDED
-#define BEAST_CONTAINER_DETAIL_AGED_ORDERED_CONTAINER_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/clock/abstract_clock.h>
 #include <xrpl/beast/container/aged_container.h>
@@ -1687,5 +1686,3 @@ expire(
 }
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/container/detail/aged_unordered_container.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_CONTAINER_DETAIL_AGED_UNORDERED_CONTAINER_H_INCLUDED
-#define BEAST_CONTAINER_DETAIL_AGED_UNORDERED_CONTAINER_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/clock/abstract_clock.h>
 #include <xrpl/beast/container/aged_container.h>
@@ -2226,5 +2225,3 @@ expire(
 }
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/container/detail/empty_base_optimization.h

@@ -4,8 +4,7 @@
 // Official repository: https://github.com/boostorg/beast
 //
 
-#ifndef BEAST_CONTAINER_DETAIL_EMPTY_BASE_OPTIMIZATION_H_INCLUDED
-#define BEAST_CONTAINER_DETAIL_EMPTY_BASE_OPTIMIZATION_H_INCLUDED
+#pragma once
 
 #include <boost/type_traits/is_final.hpp>
 
@@ -89,5 +88,3 @@ public:
 
 }  // namespace detail
 }  // namespace beast
-
-#endif

include/xrpl/beast/core/CurrentThreadName.h

@@ -2,8 +2,7 @@
 // Copyright (c) 2013 - Raw Material Software Ltd.
 // Please visit http://www.juce.com
 
-#ifndef BEAST_CORE_CURRENT_THREAD_NAME_H_INCLUDED
-#define BEAST_CORE_CURRENT_THREAD_NAME_H_INCLUDED
+#pragma once
 
 #include <boost/predef.h>
 
@@ -53,5 +52,3 @@ std::string
 getCurrentThreadName();
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/core/LexicalCast.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_MODULE_CORE_TEXT_LEXICALCAST_H_INCLUDED
-#define BEAST_MODULE_CORE_TEXT_LEXICALCAST_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/utility/instrumentation.h>
 
@@ -208,5 +207,3 @@ lexicalCast(In in, Out defaultValue = Out())
 }
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/core/List.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_INTRUSIVE_LIST_H_INCLUDED
-#define BEAST_INTRUSIVE_LIST_H_INCLUDED
+#pragma once
 
 #include <iterator>
 
@@ -574,5 +573,3 @@ private:
 };
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/core/LockFreeStack.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_INTRUSIVE_LOCKFREESTACK_H_INCLUDED
-#define BEAST_INTRUSIVE_LOCKFREESTACK_H_INCLUDED
+#pragma once
 
 #include <atomic>
 #include <iterator>
@@ -268,5 +267,3 @@ private:
 };
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/core/SemanticVersion.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_MODULE_CORE_DIAGNOSTIC_SEMANTICVERSION_H_INCLUDED
-#define BEAST_MODULE_CORE_DIAGNOSTIC_SEMANTICVERSION_H_INCLUDED
+#pragma once
 
 #include <string>
 #include <vector>
@@ -95,5 +94,3 @@ operator<(SemanticVersion const& lhs, SemanticVersion const& rhs)
 }
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/hash/hash_append.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_HASH_HASH_APPEND_H_INCLUDED
-#define BEAST_HASH_HASH_APPEND_H_INCLUDED
+#pragma once
 
 #include <boost/container/flat_set.hpp>
 #include <boost/endian/conversion.hpp>
@@ -440,5 +439,3 @@ hash_append(HashAlgorithm& h, std::error_code const& ec)
 }
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/hash/uhash.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_HASH_UHASH_H_INCLUDED
-#define BEAST_HASH_UHASH_H_INCLUDED
+#pragma once
 
 #include <xrpl/beast/hash/hash_append.h>
 #include <xrpl/beast/hash/xxhasher.h>
@@ -25,5 +24,3 @@ struct uhash
 };
 
 }  // namespace beast
-
-#endif

include/xrpl/beast/hash/xxhasher.h

@@ -1,5 +1,4 @@
-#ifndef BEAST_HASH_XXHASHER_H_INCLUDED
-#define BEAST_HASH_XXHASHER_H_INCLUDED
+#pragma once
 
 #include <boost/endian/conversion.hpp>
 
@@ -152,5 +151,3 @@ public:
 };
 
 }  // namespace beast
-
-#endif