66 lines
2.7 KiB
CMake
66 lines
2.7 KiB
CMake
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#
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# - Check if the system has the ANSI C files
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# CHECK_HEADER_STDC
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#
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# The following variables may be set before calling this macro to
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# modify the way the check is run:
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#
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# CMAKE_REQUIRED_FLAGS = string of compile command line flags
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# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
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# CMAKE_REQUIRED_INCLUDES = list of include directories
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# Copyright (c) 2009, Michihiro NAKAJIMA
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#
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# Redistribution and use is allowed according to the terms of the BSD license.
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# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
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MACRO (CHECK_HEADER_STDC)
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IF(NOT DEFINED STDC_HEADERS)
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IF(CMAKE_REQUIRED_INCLUDES)
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SET(CHECK_HEADER_STDC_C_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
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ELSE(CMAKE_REQUIRED_INCLUDES)
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SET(CHECK_HEADER_STDC_C_INCLUDE_DIRS)
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ENDIF(CMAKE_REQUIRED_INCLUDES)
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SET(MACRO_CHECK_HEADER_STDC_FLAGS ${CMAKE_REQUIRED_FLAGS})
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MESSAGE(STATUS "Cheking for ANSI C header files")
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TRY_RUN(CHECK_HEADER_STDC_result
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CHECK_HEADER_STDC_compile_result
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${CMAKE_BINARY_DIR}
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${libarchive_SOURCE_DIR}/build/cmake/CheckHeaderSTDC.c
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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CMAKE_FLAGS
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-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_HEADER_STDC_FLAGS}
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"${CHECK_HEADER_STDC_C_INCLUDE_DIRS}"
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OUTPUT_VARIABLE OUTPUT)
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IF(CHECK_HEADER_STDC_compile_result AND CHECK_HEADER_STDC_result EQUAL 0)
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FIND_PATH(CHECK_HEADER_STDC_path "string.h")
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IF (CHECK_HEADER_STDC_path)
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FILE(STRINGS "${CHECK_HEADER_STDC_path}/string.h" CHECK_HEADER_STDC_result REGEX "[^a-zA-Z_]memchr[^a-zA-Z_]")
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IF (CHECK_HEADER_STDC_result)
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FILE(STRINGS "${CHECK_HEADER_STDC_path}/stdlib.h" CHECK_HEADER_STDC_result REGEX "[^a-zA-Z_]free[^a-zA-Z_]")
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ENDIF (CHECK_HEADER_STDC_result)
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ENDIF (CHECK_HEADER_STDC_path)
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ENDIF(CHECK_HEADER_STDC_compile_result AND CHECK_HEADER_STDC_result EQUAL 0)
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IF(CHECK_HEADER_STDC_result)
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MESSAGE(STATUS "Cheking for ANSI C header files - found")
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SET(STDC_HEADERS 1 CACHE INTERNAL "Have ANSI C headers")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if the include file ${INCLUDE} "
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"exists passed with the following output:\n"
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"${OUTPUT}\n\n")
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ELSE(CHECK_HEADER_STDC_result)
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MESSAGE(STATUS "Cheking for ANSI C header files - not found")
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SET(STDC_HEADERS "" CACHE INTERNAL "Have ANSI C headers")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the include file ${INCLUDE} "
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"exists failed with the following output:\n"
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"${OUTPUT}\n\n")
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ENDIF(CHECK_HEADER_STDC_result)
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ENDIF(NOT DEFINED STDC_HEADERS)
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ENDMACRO (CHECK_HEADER_STDC)
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