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build_environment.py: clear CONFIG_SITE for configure scripts (#48690)

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Should be sufficient to set CONFIG_SITE to /dev/null before running configure to 
prevent any config site file to be loaded, which currently causes non-determinism in builds.

Setting the variable CONFIG_SITE prevents configure files to check $prefix/share/config.site, 
$prefix/etc/config.site, $ac_default_prefix/share/config.site, $ac_default_prefix/etc/config.site 
so we don't have to patch a block of code.
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Harmen Stoppels 2025-01-23 11:45:52 +01:00 committed by GitHub
parent 832bf95aa4
commit daba1a805e
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1 changed files with 3 additions and 1 deletions
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lib/spack/spack/build_environment.py
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@ -301,11 +301,13 @@ def clean_environment():
env.unset("CPLUS_INCLUDE_PATH")
env.unset("OBJC_INCLUDE_PATH")
# prevent configure scripts from sourcing variables from config site file (AC_SITE_LOAD).
env.set("CONFIG_SITE", os.devnull)
env.unset("CMAKE_PREFIX_PATH")
env.unset("PYTHONPATH")
env.unset("R_HOME")
env.unset("R_ENVIRON")
env.unset("LUA_PATH")
env.unset("LUA_CPATH")