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Meson: fix pkgconf sysroot prefix to conan paths when cross-compiling #19303

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Meson: fix pkgconf sysroot prefix to conan paths when cross-compiling #19303

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3 changes: 3 additions & 0 deletions conan/tools/meson/meson.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,9 @@ def configure(self, reconfigure=False):
default=[], check_type=list)
cmd = "meson setup "
if is_cross_build:
#Do not let pkgconf prefix sysroot path in front of paths to Conan packages (that are
#outside the toolchain sysroot).
os.environ['PKG_CONFIG_FDO_SYSROOT_RULES'] = "1"
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@memsharded memsharded Nov 24, 2025

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Setting an environment variable this way is not correct, it will leave the environment dirty for other packages, etc. If anything, the approach would be in the MesonToolchain generator, to generate a Environment script with the necessary env-vars

machine_files.insert(0, cross)
cmd += " ".join([f'--cross-file "{file}"' for file in machine_files])
if os.path.exists(native):
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