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chore: Workaround boost compiler resolution inside Nix environment (#7826)

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Ayaz Salikhov
2026-07-20 15:04:08 +01:00
committed by GitHub
parent 5ce0b1c2c7
commit b2f45813e0
1 changed files with 16 additions and 0 deletions
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16
conan/profiles/default
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@@ -20,6 +20,22 @@ compiler.libcxx={{ detect_api.detect_libcxx(compiler, version, compiler_exe) }}
{% endif %}
[conf]
{# The Boost recipe builds with b2, which doesn't use Conan's toolchain files. #}
{# Instead it hand-rolls the compiler for user-config.jam, #}
{# and its fallback probes a version-suffixed binary (e.g. `g++-15`) before plain `g++`. #}
{# Inside the Nix shell the wrapper only provides `g++`/`gcc` (no `-15` suffix), #}
{# so on a host that also has a system `g++-15` the probe escapes Nix #}
{# and picks the system compiler, which is mismatched with the Nix libraries #}
{# and breaks the build (e.g. Boost.Stacktrace link checks fail). #}
{# Pinning the executables here short-circuits that probe so Boost (and the rest of the toolchain) #}
{# resolve the same compiler. #}
{# Not part of the package ID, so binaries stay shareable. #}
{% if os != "Windows" %}
{% set cc_exe = {"gcc": "gcc", "clang": "clang", "apple-clang": "clang"}.get(compiler) %}
{% set cxx_exe = {"gcc": "g++", "clang": "clang++", "apple-clang": "clang++"}.get(compiler) %}
tools.build:compiler_executables={'c':'{{ cc_exe }}','cpp':'{{ cxx_exe }}'}
{% endif %}
{# By default, Conan tries to reuse binaries built with different cppstd versions. #}
{# We want to avoid that to improve reproduceability, so we add the cppstd version to the package ID. #}
{# More info: https://docs.conan.io/2/reference/extensions/binary_compatibility.html #}