diff options
Diffstat (limited to 'Modules/CheckLibraryExists.cmake')
| -rw-r--r-- | Modules/CheckLibraryExists.cmake | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/Modules/CheckLibraryExists.cmake b/Modules/CheckLibraryExists.cmake index 822c3f3cc0..fbdac5f3e0 100644 --- a/Modules/CheckLibraryExists.cmake +++ b/Modules/CheckLibraryExists.cmake @@ -5,11 +5,13 @@ # FUNCTION - the name of the function # LOCATION - location where the library should be found # VARIABLE - variable to store the result -# -# If CMAKE_REQUIRED_FLAGS is set then those flags will be passed into the -# compile of the program likewise if CMAKE_REQUIRED_LIBRARIES is set then -# those libraries will be linked against the test program - +# +# 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_LIBRARIES = list of libraries to link MACRO(CHECK_LIBRARY_EXISTS LIBRARY FUNCTION LOCATION VARIABLE) IF("${VARIABLE}" MATCHES "^${VARIABLE}$") @@ -20,10 +22,13 @@ MACRO(CHECK_LIBRARY_EXISTS LIBRARY FUNCTION LOCATION VARIABLE) IF(CMAKE_REQUIRED_LIBRARIES) SET(CHECK_LIBRARY_EXISTS_LIBRARIES ${CHECK_LIBRARY_EXISTS_LIBRARIES} ${CMAKE_REQUIRED_LIBRARIES}) + ELSE(CMAKE_REQUIRED_LIBRARIES) + SET(CHECK_LIBRARY_EXISTS_LIBRARIES) ENDIF(CMAKE_REQUIRED_LIBRARIES) TRY_COMPILE(${VARIABLE} ${CMAKE_BINARY_DIR} ${CMAKE_ROOT}/Modules/CheckFunctionExists.c + COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION} -DLINK_DIRECTORIES:STRING=${LOCATION} |