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ENH: Made Check* modules more consistent and well documented. Added CMAKE_REQUIRED_DEFINITIONS option.

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This commit is contained in:
Brad King
2006-02-09 19:23:18 -05:00
parent f8a8e88a08
commit f0a1da00c1
9 changed files with 101 additions and 29 deletions
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15
Modules/CheckLibraryExists.cmake
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@@ -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}