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| author | Brad King <brad.king@kitware.com> | 2009-09-17 15:32:54 -0400 |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2009-09-17 15:32:54 -0400 |
| commit | 7e3d437d0af7e625e19bbeac37e025d16cf8be11 (patch) | |
| tree | b1f25b9f149ce11f8d36c56f4b93e7d8addd771a /Modules/CheckCCompilerFlag.cmake | |
| parent | ca76645ab7f235fdad652fcff7ad9a899bc12424 (diff) | |
| download | cmake-7e3d437d0af7e625e19bbeac37e025d16cf8be11.tar.gz | |
Fix CHECK_(C|CXX)_COMPILER_FLAG for GNU and MSVC
These compilers warn and return 0 for unrecognized flags. We fix the
compiler flag check macros by looking for a warning in the output.
See issue #9516.
Diffstat (limited to 'Modules/CheckCCompilerFlag.cmake')
| -rw-r--r-- | Modules/CheckCCompilerFlag.cmake | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Modules/CheckCCompilerFlag.cmake b/Modules/CheckCCompilerFlag.cmake index c5c4eb195e..b4289e4660 100644 --- a/Modules/CheckCCompilerFlag.cmake +++ b/Modules/CheckCCompilerFlag.cmake @@ -17,7 +17,11 @@ INCLUDE(CheckCSourceCompiles) MACRO (CHECK_C_COMPILER_FLAG _FLAG _RESULT) SET(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}") SET(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}") - CHECK_C_SOURCE_COMPILES("int main() { return 0;}" ${_RESULT}) + CHECK_C_SOURCE_COMPILES("int main() { return 0;}" ${_RESULT} + # Some compilers do not fail with a bad flag + FAIL_REGEX "unrecognized option" # GNU + FAIL_REGEX "ignoring unknown option" # MSVC + ) SET (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}") ENDMACRO (CHECK_C_COMPILER_FLAG) |