diff options
| author | Patrick Steinhardt <ps@pks.im> | 2018-07-19 15:13:40 +0200 |
|---|---|---|
| committer | Patrick Steinhardt <ps@pks.im> | 2018-08-03 09:50:35 +0200 |
| commit | 186a7ba5d71c38e96af07ec9b8dfa29661fabb5a (patch) | |
| tree | a60db273f13ae68876383dfdf6078619cd7467cc /cmake | |
| parent | 07cf8b38dbad7de3f0a5da053726d8e697a65d0d (diff) | |
| download | libgit2-186a7ba5d71c38e96af07ec9b8dfa29661fabb5a.tar.gz | |
cmake: error out if required C flags are not supported
We do want to notify users compiling our source code early on if they
try to use C flags which aren't supported. Add a new macro `AddCFlag`,
which results in a fatal error in case the flag is not supported, and
use it for our fuzzing flags.
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/Modules/AddCFlagIfSupported.cmake | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/cmake/Modules/AddCFlagIfSupported.cmake b/cmake/Modules/AddCFlagIfSupported.cmake index 67fc89510..1d6181cac 100644 --- a/cmake/Modules/AddCFlagIfSupported.cmake +++ b/cmake/Modules/AddCFlagIfSupported.cmake @@ -5,9 +5,21 @@ INCLUDE(CheckCCompilerFlag) +MACRO(ADD_C_FLAG _FLAG) + STRING(TOUPPER ${_FLAG} UPCASE) + STRING(REGEX REPLACE "^-" "" UPCASE_PRETTY ${UPCASE}) + CHECK_C_COMPILER_FLAG(${_FLAG} IS_${UPCASE_PRETTY}_SUPPORTED) + + IF(IS_${UPCASE_PRETTY}_SUPPORTED) + SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_FLAG}") + ELSE() + MESSAGE(FATAL_ERROR "Required flag ${_FLAG} is not supported") + ENDIF() +ENDMACRO() + MACRO(ADD_C_FLAG_IF_SUPPORTED _FLAG) STRING(TOUPPER ${_FLAG} UPCASE) - STRING(REGEX REPLACE "^-" "" UPCASE_PRETTY ${UPCASE}) + STRING(REGEX REPLACE "^-" "" UPCASE_PRETTY ${UPCASE}) CHECK_C_COMPILER_FLAG(${_FLAG} IS_${UPCASE_PRETTY}_SUPPORTED) IF(IS_${UPCASE_PRETTY}_SUPPORTED) |