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Add extra CXXFLAGS flags set by user; can be -D CXX_EXTRA_FLAGS or environment variable

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- Command line -D option overrides environment variable
- Useful for suppressing transient upstream warnings in dependencies, like Qt
This commit is contained in:
Larry Shaffer 2013-09-24 10:39:54 -06:00
parent 1ca2258a5b
commit 3fce4a5c0a
1 changed files with 12 additions and 0 deletions
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12
CMakeLists.txt
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@ -327,6 +327,18 @@ IF (PEDANTIC)
IF ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-return-type-c-linkage -Wno-overloaded-virtual")
ENDIF ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
# add any extra CXXFLAGS flags set by user. can be -D CXX_EXTRA_FLAGS or environment variable
# command line -D option overrides environment variable
# e.g. useful for suppressing transient upstream warnings in dependencies, like Qt
SET(CXX_EXTRA_FLAGS "" CACHE STRING "Additional appended CXXFLAGS")
IF ("${CXX_EXTRA_FLAGS}" STREQUAL "" AND DEFINED $ENV{CXX_EXTRA_FLAGS})
SET(CXX_EXTRA_FLAGS "$ENV{CXX_EXTRA_FLAGS}")
ENDIF ("${CXX_EXTRA_FLAGS}" STREQUAL "" AND DEFINED $ENV{CXX_EXTRA_FLAGS})
IF (NOT "${CXX_EXTRA_FLAGS}" STREQUAL "")
MESSAGE (STATUS "Appending CXX_EXTRA_FLAGS")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_EXTRA_FLAGS}")
ENDIF (NOT "${CXX_EXTRA_FLAGS}" STREQUAL "")
ENDIF (MSVC)
ENDIF (PEDANTIC)