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[CMakeLuaTailorHgBridge.git] / CMakeLua / Modules / CMakeDetermineCompilerABI.cmake
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2 # Function to compile a source file to identify the compiler ABI.
3 # This is used internally by CMake and should not be included by user
4 # code.
6 FUNCTION(CMAKE_DETERMINE_COMPILER_ABI lang src)
7   IF(NOT DEFINED CMAKE_DETERMINE_${lang}_ABI_COMPILED)
8     MESSAGE(STATUS "Detecting ${lang} compiler ABI info")
10     # Compile the ABI identification source.
11     SET(BIN "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeDetermineCompilerABI_${lang}.bin")
12     TRY_COMPILE(CMAKE_DETERMINE_${lang}_ABI_COMPILED
13       ${CMAKE_BINARY_DIR} ${src}
14       OUTPUT_VARIABLE OUTPUT
15       COPY_FILE "${BIN}"
16       )
18     # Load the resulting information strings.
19     IF(CMAKE_DETERMINE_${lang}_ABI_COMPILED)
20       MESSAGE(STATUS "Detecting ${lang} compiler ABI info - done")
21       FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
22         "Detecting ${lang} compiler ABI info compiled with the following output:\n${OUTPUT}\n\n")
23       FILE(STRINGS "${BIN}" ABI_STRINGS LIMIT_COUNT 2 REGEX "INFO:[^[]*\\[")
24       FOREACH(info ${ABI_STRINGS})
25         IF("${info}" MATCHES ".*INFO:sizeof_dptr\\[0*([^]]*)\\].*")
26           STRING(REGEX REPLACE ".*INFO:sizeof_dptr\\[0*([^]]*)\\].*" "\\1" ABI_SIZEOF_DPTR "${info}")
27         ENDIF("${info}" MATCHES ".*INFO:sizeof_dptr\\[0*([^]]*)\\].*")
28         IF("${info}" MATCHES ".*INFO:abi\\[([^]]*)\\].*")
29           STRING(REGEX REPLACE ".*INFO:abi\\[([^]]*)\\].*" "\\1" ABI_NAME "${info}")
30         ENDIF("${info}" MATCHES ".*INFO:abi\\[([^]]*)\\].*")
31       ENDFOREACH(info)
33       IF(ABI_SIZEOF_DPTR)
34         SET(CMAKE_${lang}_SIZEOF_DATA_PTR "${ABI_SIZEOF_DPTR}" PARENT_SCOPE)
35         SET(CMAKE_SIZEOF_VOID_P "${ABI_SIZEOF_DPTR}" PARENT_SCOPE)
36       ENDIF(ABI_SIZEOF_DPTR)
38       IF(ABI_NAME)
39         SET(CMAKE_${lang}_COMPILER_ABI "${ABI_NAME}" PARENT_SCOPE)
40         SET(CMAKE_INTERNAL_PLATFORM_ABI "${ABI_NAME}" PARENT_SCOPE)
41       ENDIF(ABI_NAME)
43     ELSE(CMAKE_DETERMINE_${lang}_ABI_COMPILED)
44       MESSAGE(STATUS "Detecting ${lang} compiler ABI info - failed")
45       FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
46         "Detecting ${lang} compiler ABI info failed to compile with the following output:\n${OUTPUT}\n\n")
47     ENDIF(CMAKE_DETERMINE_${lang}_ABI_COMPILED)
48   ENDIF(NOT DEFINED CMAKE_DETERMINE_${lang}_ABI_COMPILED)
49 ENDFUNCTION(CMAKE_DETERMINE_COMPILER_ABI)