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1ae06e002d
Revert commit 1269df2e3b (Cmake: Don't check for all headers each
time, 2014-08-15) and add a comment explaining the purpose of the
original code.
The check_include_file_concat macro is intended to be called multiple
times on a sequence of possibly dependent headers. Later headers
may depend on earlier headers to provide declarations. They cannot
be safely included independently on some platforms.
For example, many POSIX APIs document including sys/types.h before some
other headers. Also on some OS X versions sys/socket.h must be included
before net/if.h or the check for the latter will fail.
Signed-off-by: Brad King <brad.king@kitware.com>
93 lines
4.0 KiB
CMake
93 lines
4.0 KiB
CMake
#File defines convenience macros for available feature testing
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# This macro checks if the symbol exists in the library and if it
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# does, it appends library to the list.
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macro(CHECK_LIBRARY_EXISTS_CONCAT LIBRARY SYMBOL VARIABLE)
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check_library_exists("${CURL_LIBS};${LIBRARY}" ${SYMBOL} "${CMAKE_LIBRARY_PATH}"
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${VARIABLE})
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if(${VARIABLE})
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list(APPEND CURL_LIBS ${LIBRARY})
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endif(${VARIABLE})
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endmacro(CHECK_LIBRARY_EXISTS_CONCAT)
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# Check if header file exists and add it to the list.
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# This macro is intended to be called multiple times with a sequence of
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# possibly dependent header files. Some headers depend on others to be
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# compiled correctly.
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macro(CHECK_INCLUDE_FILE_CONCAT FILE VARIABLE)
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check_include_files("${CURL_INCLUDES};${FILE}" ${VARIABLE})
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if(${VARIABLE})
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set(CURL_INCLUDES ${CURL_INCLUDES} ${FILE})
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set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -D${VARIABLE}")
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endif(${VARIABLE})
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endmacro(CHECK_INCLUDE_FILE_CONCAT)
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# For other curl specific tests, use this macro.
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macro(CURL_INTERNAL_TEST CURL_TEST)
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if("${CURL_TEST}" MATCHES "^${CURL_TEST}$")
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set(MACRO_CHECK_FUNCTION_DEFINITIONS
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"-D${CURL_TEST} ${CURL_TEST_DEFINES} ${CMAKE_REQUIRED_FLAGS}")
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if(CMAKE_REQUIRED_LIBRARIES)
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set(CURL_TEST_ADD_LIBRARIES
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"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
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endif(CMAKE_REQUIRED_LIBRARIES)
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message(STATUS "Performing Curl Test ${CURL_TEST}")
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try_compile(${CURL_TEST}
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${CMAKE_BINARY_DIR}
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${CMAKE_CURRENT_SOURCE_DIR}/CMake/CurlTests.c
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CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
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"${CURL_TEST_ADD_LIBRARIES}"
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OUTPUT_VARIABLE OUTPUT)
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if(${CURL_TEST})
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set(${CURL_TEST} 1 CACHE INTERNAL "Curl test ${FUNCTION}")
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message(STATUS "Performing Curl Test ${CURL_TEST} - Success")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Performing Curl Test ${CURL_TEST} passed with the following output:\n"
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"${OUTPUT}\n")
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else(${CURL_TEST})
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message(STATUS "Performing Curl Test ${CURL_TEST} - Failed")
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set(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Performing Curl Test ${CURL_TEST} failed with the following output:\n"
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"${OUTPUT}\n")
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endif(${CURL_TEST})
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endif("${CURL_TEST}" MATCHES "^${CURL_TEST}$")
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endmacro(CURL_INTERNAL_TEST)
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macro(CURL_INTERNAL_TEST_RUN CURL_TEST)
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if("${CURL_TEST}_COMPILE" MATCHES "^${CURL_TEST}_COMPILE$")
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set(MACRO_CHECK_FUNCTION_DEFINITIONS
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"-D${CURL_TEST} ${CMAKE_REQUIRED_FLAGS}")
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if(CMAKE_REQUIRED_LIBRARIES)
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set(CURL_TEST_ADD_LIBRARIES
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"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
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endif(CMAKE_REQUIRED_LIBRARIES)
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message(STATUS "Performing Curl Test ${CURL_TEST}")
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try_run(${CURL_TEST} ${CURL_TEST}_COMPILE
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${CMAKE_BINARY_DIR}
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${CMAKE_CURRENT_SOURCE_DIR}/CMake/CurlTests.c
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CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
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"${CURL_TEST_ADD_LIBRARIES}"
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OUTPUT_VARIABLE OUTPUT)
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if(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
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set(${CURL_TEST} 1 CACHE INTERNAL "Curl test ${FUNCTION}")
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message(STATUS "Performing Curl Test ${CURL_TEST} - Success")
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else(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
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message(STATUS "Performing Curl Test ${CURL_TEST} - Failed")
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set(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}")
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file(APPEND "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log"
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"Performing Curl Test ${CURL_TEST} failed with the following output:\n"
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"${OUTPUT}")
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if(${CURL_TEST}_COMPILE)
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file(APPEND
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log"
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"There was a problem running this test\n")
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endif(${CURL_TEST}_COMPILE)
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file(APPEND "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log"
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"\n\n")
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endif(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
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endif("${CURL_TEST}_COMPILE" MATCHES "^${CURL_TEST}_COMPILE$")
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endmacro(CURL_INTERNAL_TEST_RUN)
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