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authorAndreas Schneider <asn@cryptomilk.org>2018-09-11 11:03:43 +0200
committerAndreas Schneider <asn@cryptomilk.org>2018-09-11 11:08:18 +0200
commit21dd16562fddb3bef5d0dd91c5bf3533b2b533fc (patch)
tree38317eb55c710293ee3329b9122a54f231764186 /cmake
parentb12767a8bb3b87cc89e871d73d65291883df1270 (diff)
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cmake: Improve CheckCCompilerFlagSSP
Diffstat (limited to 'cmake')
-rw-r--r--cmake/Modules/CheckCCompilerFlagSSP.cmake21
1 files changed, 20 insertions, 1 deletions
diff --git a/cmake/Modules/CheckCCompilerFlagSSP.cmake b/cmake/Modules/CheckCCompilerFlagSSP.cmake
index ab206ca..eeaf4fc 100644
--- a/cmake/Modules/CheckCCompilerFlagSSP.cmake
+++ b/cmake/Modules/CheckCCompilerFlagSSP.cmake
@@ -18,12 +18,31 @@
# Requires cmake 3.10
#include_guard(GLOBAL)
include(CheckCSourceCompiles)
+include(CMakeCheckCompilerFlagCommonPatterns)
macro(CHECK_C_COMPILER_FLAG_SSP _FLAG _RESULT)
set(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${_FLAG}")
- check_c_source_compiles("int main(int argc, char **argv) { char buffer[256]; return buffer[argc]=0;}" ${_RESULT})
+ # Normalize locale during test compilation.
+ set(_CheckCCompilerFlag_LOCALE_VARS LC_ALL LC_MESSAGES LANG)
+ foreach(v ${_CheckCCompilerFlag_LOCALE_VARS})
+ set(_CheckCCompilerFlag_SAVED_${v} "$ENV{${v}}")
+ set(ENV{${v}} C)
+ endforeach()
+
+ CHECK_COMPILER_FLAG_COMMON_PATTERNS(_CheckCCompilerFlag_COMMON_PATTERNS)
+ check_c_source_compiles("int main(int argc, char **argv) { char buffer[256]; return buffer[argc]=0;}"
+ ${_RESULT}
+ # Some compilers do not fail with a bad flag
+ FAIL_REGEX "command line option .* is valid for .* but not for C" # GNU
+ ${_CheckCCompilerFlag_COMMON_PATTERNS})
+ foreach(v ${_CheckCCompilerFlag_LOCALE_VARS})
+ set(ENV{${v}} ${_CheckCCompilerFlag_SAVED_${v}})
+ unset(_CheckCCompilerFlag_SAVED_${v})
+ endforeach()
+ unset(_CheckCCompilerFlag_LOCALE_VARS)
+ unset(_CheckCCompilerFlag_COMMON_PATTERNS)
set(CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}")
endmacro(CHECK_C_COMPILER_FLAG_SSP)