diff options
| -rw-r--r-- | Modules/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | Modules/CheckStructHasMember.cmake | 39 |
2 files changed, 40 insertions, 1 deletions
diff --git a/Modules/CMakeLists.txt b/Modules/CMakeLists.txt index c3b5903e97..c575043b54 100644 --- a/Modules/CMakeLists.txt +++ b/Modules/CMakeLists.txt @@ -1,5 +1,5 @@ # just install the modules -# new file added, force rerunning cmake +# new file added, force rerunning cmake # SUBDIRS(Platform) INSTALL_FILES(${CMAKE_DATA_DIR}/Modules .*\\.cmake$) diff --git a/Modules/CheckStructHasMember.cmake b/Modules/CheckStructHasMember.cmake new file mode 100644 index 0000000000..f8a7d32afe --- /dev/null +++ b/Modules/CheckStructHasMember.cmake @@ -0,0 +1,39 @@ +# - Check if the given struct or class has the specified member variable +# CHECK_STRUCT_HAS_MEMBER (STRUCT MEMBER HEADER VARIABLE) +# +# STRUCT - the name of the struct or class you are interested in +# MEMBER - the member which existence you want to check +# HEADER - the header(s) where the prototype should be declared +# VARIABLE - variable to store the result +# +# The following variables may be set before calling this macro to +# modify the way the check is run: +# +# CMAKE_REQUIRED_FLAGS = string of compile command line flags +# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar) +# CMAKE_REQUIRED_INCLUDES = list of include directories +# +# Example: CHECK_STRUCT_HAS_MEMBER("struct timeval" tv_sec sys/select.h HAVE_TIMEVAL_TV_SEC) + + +INCLUDE(CheckCSourceCompiles) + +MACRO (CHECK_STRUCT_HAS_MEMBER _STRUCT _MEMBER _HEADER _RESULT) + SET(_INCLUDE_FILES) + FOREACH (it ${_HEADER}) + SET(_INCLUDE_FILES "${_INCLUDE_FILES}#include <${it}>\n") + ENDFOREACH (it) + + SET(_CHECK_STRUCT_MEMBER_SOURCE_CODE " +${_INCLUDE_FILES} +int main() +{ + ${_STRUCT}* tmp; + tmp->${_MEMBER}; + return 0; +} +") + CHECK_C_SOURCE_COMPILES("${_CHECK_STRUCT_MEMBER_SOURCE_CODE}" ${_RESULT}) + +ENDMACRO (CHECK_STRUCT_HAS_MEMBER) + |