How to set compiler flags in cmakelists.txt of single file for debug or release ?

Question

I have found the way to configure according to Andre's comment in How to change a compiler flag for just one executable in CMake? .

For example, I add a flag for bubble.c:

set_source_files_properties( ${ProjDirPath}/../bubble.c PROPERTIES COMPILE_FLAGS "-O2")

It worked.But I can't specify the flag for debug or release. Dose anyone know how to configure it? Thank you!

score 0 · Answer 1 · answered Dec 07 '18 at 13:47

0

IF(CMAKE_BUILD_TYPE MATCHES DEBUG)
set_source_files_properties( ${ProjDirPath}/../bubble.c PROPERTIES COMPILE_FLAGS "-O2")
ENDIF(CMAKE_BUILD_TYPE MATCHES DEBUG)

answered Dec 07 '18 at 13:47

arved

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Only works for single-configuration generators per cmake documentation for the variable `CMAKE_BUILD_TYPE`. – fdk1342 Dec 07 '18 at 14:01

score 0 · Answer 2 · answered Jan 19 '20 at 09:57

Use special syntax like this:

set_source_files_properties(myfile.cpp PROPERTIES 
    COMPILE_FLAGS $<$<CONFIG:RelDebug>:/O2>
    SKIP_PRECOMPILE_HEADERS $<$<CONFIG:RelDebug>:ON>
)

Sets specific compilation option only to specific configuration (in this case for RelDebug).

How to set compiler flags in cmakelists.txt of single file for debug or release ?

2 Answers2