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CMakeDetermineCompilerABI: set locale to C for try_compile()

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Have CMakeDetermineCompilerABI set the locale to C before calling
try_compile().  This is for the implicit include path parser to
keep all the verbose compiler messages in English so we can parse
it.   See #18784 for discussion.
This commit is contained in:
Chuck Cranor
2019-01-14 12:42:22 -07:00
committed by Brad King
parent c765ae495a
commit d751d2d2ed
1 changed files with 17 additions and 0 deletions
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Modules/CMakeDetermineCompilerABI.cmake
+17
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@@ -30,6 +30,17 @@ function(CMAKE_DETERMINE_COMPILER_ABI lang src)
list(APPEND CMAKE_FLAGS "-DCMAKE_${lang}_STANDARD_LIBRARIES=") list(APPEND CMAKE_FLAGS "-DCMAKE_${lang}_STANDARD_LIBRARIES=")
endif() endif()
__TestCompiler_setTryCompileTargetType() __TestCompiler_setTryCompileTargetType()
# Save the current LC_ALL, LC_MESSAGES, and LANG environment variables
# and set them to "C" that way GCC's "search starts here" text is in
# English and we can grok it.
set(_orig_lc_all $ENV{LC_ALL})
set(_orig_lc_messages $ENV{LC_MESSAGES})
set(_orig_lang $ENV{LANG})
set(ENV{LC_ALL} C)
set(ENV{LC_MESSAGES} C)
set(ENV{LANG} C)
try_compile(CMAKE_${lang}_ABI_COMPILED try_compile(CMAKE_${lang}_ABI_COMPILED
${CMAKE_BINARY_DIR} ${src} ${CMAKE_BINARY_DIR} ${src}
CMAKE_FLAGS ${CMAKE_FLAGS} CMAKE_FLAGS ${CMAKE_FLAGS}
@@ -40,6 +51,12 @@ function(CMAKE_DETERMINE_COMPILER_ABI lang src)
COPY_FILE "${BIN}" COPY_FILE "${BIN}"
COPY_FILE_ERROR _copy_error COPY_FILE_ERROR _copy_error
) )
# Restore original LC_ALL, LC_MESSAGES, and LANG
set(ENV{LC_ALL} ${_orig_lc_all})
set(ENV{LC_MESSAGES} ${_orig_lc_messages})
set(ENV{LANG} ${_orig_lang})
# Move result from cache to normal variable. # Move result from cache to normal variable.
set(CMAKE_${lang}_ABI_COMPILED ${CMAKE_${lang}_ABI_COMPILED}) set(CMAKE_${lang}_ABI_COMPILED ${CMAKE_${lang}_ABI_COMPILED})
unset(CMAKE_${lang}_ABI_COMPILED CACHE) unset(CMAKE_${lang}_ABI_COMPILED CACHE)