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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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14
Modules/CheckIncludeFile.cmake
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@@ -7,8 +7,20 @@
# an optional third argument is the CFlags to add to the compile line
# or you can use CMAKE_REQUIRED_FLAGS
#
# 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
#
MACRO(CHECK_INCLUDE_FILE INCLUDE VARIABLE)
IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
IF(CMAKE_REQUIRED_INCLUDES)
SET(CHECK_INCLUDE_FILE_C_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
ELSE(CMAKE_REQUIRED_INCLUDES)
SET(CHECK_INCLUDE_FILE_C_INCLUDE_DIRS)
ENDIF(CMAKE_REQUIRED_INCLUDES)
SET(MACRO_CHECK_INCLUDE_FILE_FLAGS ${CMAKE_REQUIRED_FLAGS})
SET(CHECK_INCLUDE_FILE_VAR ${INCLUDE})
CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CheckIncludeFile.c.in
@@ -22,8 +34,10 @@ MACRO(CHECK_INCLUDE_FILE INCLUDE VARIABLE)
TRY_COMPILE(${VARIABLE}
${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckIncludeFile.c
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
CMAKE_FLAGS
-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_INCLUDE_FILE_FLAGS}
"${CHECK_INCLUDE_FILE_C_INCLUDE_DIRS}"
OUTPUT_VARIABLE OUTPUT)
IF(${ARGC} EQUAL 3)