chore: Make CMake improvements (#6010)

This change removes unused definitions from the CMake files, moves variable definitions from `XrplSanity` to `XrplSettings` where they better belong, and updates the minimum GCC and Clang versions to match what we actually minimally support.

cmake/CMakeFuncs.cmake

@@ -1,21 +1,3 @@
-macro(group_sources_in source_dir curdir)
-  file(GLOB children RELATIVE ${source_dir}/${curdir}
-    ${source_dir}/${curdir}/*)
-  foreach (child ${children})
-    if (IS_DIRECTORY ${source_dir}/${curdir}/${child})
-      group_sources_in(${source_dir} ${curdir}/${child})
-    else()
-      string(REPLACE "/" "\\" groupname ${curdir})
-      source_group(${groupname} FILES
-        ${source_dir}/${curdir}/${child})
-    endif()
-  endforeach()
-endmacro()
-
-macro(group_sources curdir)
-  group_sources_in(${PROJECT_SOURCE_DIR} ${curdir})
-endmacro()
-
 macro (exclude_from_default target_)
   set_target_properties (${target_} PROPERTIES EXCLUDE_FROM_ALL ON)
   set_target_properties (${target_} PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD ON)

cmake/XrplConfig.cmake

@@ -12,7 +12,7 @@ if (static OR MSVC)
 else ()
   set (Boost_USE_STATIC_RUNTIME OFF)
 endif ()
-find_dependency (Boost 1.70
+find_dependency (Boost
   COMPONENTS
     chrono
     container
@@ -52,5 +52,3 @@ if (TARGET ZLIB::ZLIB)
   set_target_properties(OpenSSL::Crypto PROPERTIES
     INTERFACE_LINK_LIBRARIES ZLIB::ZLIB)
 endif ()
-
-include ("${CMAKE_CURRENT_LIST_DIR}/XrplTargets.cmake")

cmake/XrplCore.cmake

@@ -73,10 +73,7 @@ include(target_link_modules)
 
 # Level 01
 add_module(xrpl beast)
-target_link_libraries(xrpl.libxrpl.beast PUBLIC
+target_link_libraries(xrpl.libxrpl.beast PUBLIC xrpl.imports.main)
-  xrpl.imports.main
-  xrpl.libpb
-)
 
 # Level 02
 add_module(xrpl basics)

cmake/XrplSanity.cmake

@@ -1,5 +1,5 @@
 #[===================================================================[
-   convenience variables and sanity checks
+   sanity checks
 #]===================================================================]
 
 get_property(is_multiconfig GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
@@ -16,39 +16,19 @@ if (NOT is_multiconfig)
   endif ()
 endif ()
 
-get_directory_property(has_parent PARENT_DIRECTORY)
-if (has_parent)
-  set (is_root_project OFF)
-else ()
-  set (is_root_project ON)
-endif ()
-
 if ("${CMAKE_CXX_COMPILER_ID}" MATCHES ".*Clang") # both Clang and AppleClang
   set (is_clang TRUE)
   if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND
-         CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0)
+         CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16.0)
-    message (FATAL_ERROR "This project requires clang 8 or later")
+    message (FATAL_ERROR "This project requires clang 16 or later")
   endif ()
-  # TODO min AppleClang version check ?
 elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
   set (is_gcc TRUE)
-  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0)
+  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.0)
-    message (FATAL_ERROR "This project requires GCC 8 or later")
+    message (FATAL_ERROR "This project requires GCC 12 or later")
   endif ()
 endif ()
 
-if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
-  set (is_linux TRUE)
-else ()
-  set (is_linux FALSE)
-endif ()
-
-if ("$ENV{CI}" STREQUAL "true" OR "$ENV{CONTINUOUS_INTEGRATION}" STREQUAL "true")
-  set (is_ci TRUE)
-else ()
-  set (is_ci FALSE)
-endif ()
-
 # check for in-source build and fail
 if ("${CMAKE_CURRENT_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
   message (FATAL_ERROR "Builds (in-source) are not allowed in "

cmake/XrplSettings.cmake

@@ -1,10 +1,25 @@
 #[===================================================================[
-   declare user options/settings
+   declare options and variables
 #]===================================================================]
 
-include(ProcessorCount)
+if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  set (is_linux TRUE)
+else()
+  set(is_linux FALSE)
+endif()
 
-ProcessorCount(PROCESSOR_COUNT)
+if("$ENV{CI}" STREQUAL "true" OR "$ENV{CONTINUOUS_INTEGRATION}" STREQUAL "true")
+  set(is_ci TRUE)
+else()
+  set(is_ci FALSE)
+endif()
+
+get_directory_property(has_parent PARENT_DIRECTORY)
+if(has_parent)
+  set(is_root_project OFF)
+else()
+  set(is_root_project ON)
+endif()
 
 option(assert "Enables asserts, even in release builds" OFF)
 
@@ -25,10 +40,15 @@ if(unity)
   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()
+
 if(is_gcc OR is_clang)
+  include(ProcessorCount)
+  ProcessorCount(PROCESSOR_COUNT)
+
   option(coverage "Generates coverage info." OFF)
   option(profile "Add profiling flags" OFF)
   set(coverage_test_parallelism "${PROCESSOR_COUNT}" CACHE STRING
@@ -48,6 +68,7 @@ else()
   set(coverage OFF CACHE BOOL "gcc/clang only" FORCE)
   set(wextra OFF CACHE BOOL "gcc/clang only" FORCE)
 endif()
+
 if(is_linux)
   option(BUILD_SHARED_LIBS "build shared xrpl libraries" OFF)
   option(static "link protobuf, openssl, libc++, and boost statically" ON)
@@ -64,11 +85,13 @@ else()
   set(use_gold OFF CACHE BOOL "gold linker, linux only" FORCE)
   set(use_mold OFF CACHE BOOL "mold linker, linux only" FORCE)
 endif()
+
 if(is_clang)
   option(use_lld "enables detection of lld linker" ON)
 else()
   set(use_lld OFF CACHE BOOL "try lld linker, clang only" FORCE)
 endif()
+
 option(jemalloc "Enables jemalloc for heap profiling" OFF)
 option(werr "treat warnings as errors" OFF)
 option(local_protobuf
@@ -102,16 +125,6 @@ if(san)
     message(FATAL_ERROR "${san} sanitizer does not seem to be supported by your compiler")
   endif()
 endif()
-set(container_label "" CACHE STRING "tag to use for package building containers")
-option(packages_only
-  "ONLY generate package building targets. This is special use-case and almost \
-   certainly not what you want. Use with caution as you won't be able to build \
-   any compiled targets locally." OFF)
-option(have_package_container
-  "Sometimes you already have the tagged container you want to use for package \
-   building and you don't want docker to rebuild it. This flag will detach the \
-   dependency of the package build from the container build. It's an advanced \
-   use case and most likely you should not be touching this flag." OFF)
 
 # the remaining options are obscure and rarely used
 option(beast_no_unit_test_inline
@@ -125,15 +138,13 @@ option(boost_show_deprecated
   "Allow boost to fail on deprecated usage. Only useful if you're trying\
   to find deprecated calls."
   OFF)
-option(beast_hashers
-  "Use local implementations for sha/ripemd hashes (experimental, not recommended)"
-  OFF)
 
 if(WIN32)
   option(beast_disable_autolink "Disables autolinking of system libraries on WIN32" OFF)
 else()
   set(beast_disable_autolink OFF CACHE BOOL "WIN32 only" FORCE)
 endif()
+
 if(coverage)
   message(STATUS "coverage build requested - forcing Debug build")
   set(CMAKE_BUILD_TYPE Debug CACHE STRING "build type" FORCE)