diff options
Diffstat (limited to 'Modules/CMakeDetermineCompilerId.cmake')
| -rw-r--r-- | Modules/CMakeDetermineCompilerId.cmake | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Modules/CMakeDetermineCompilerId.cmake b/Modules/CMakeDetermineCompilerId.cmake index a70c6ab..bddd6a1 100644 --- a/Modules/CMakeDetermineCompilerId.cmake +++ b/Modules/CMakeDetermineCompilerId.cmake @@ -42,6 +42,11 @@ FUNCTION(CMAKE_DETERMINE_COMPILER_ID lang flagvar src) ENDIF(NOT CMAKE_${lang}_COMPILER_ID) ENDFOREACH(flags) + # If the compiler is still unknown, try to query its vendor. + IF(NOT CMAKE_${lang}_COMPILER_ID) + CMAKE_DETERMINE_COMPILER_ID_VENDOR(${lang}) + ENDIF() + # if the format is unknown after all files have been checked, put "Unknown" in the cache IF(NOT CMAKE_EXECUTABLE_FORMAT) SET(CMAKE_EXECUTABLE_FORMAT "Unknown" CACHE INTERNAL "Executable file format") @@ -245,3 +250,38 @@ FUNCTION(CMAKE_DETERMINE_COMPILER_ID_CHECK lang file) PARENT_SCOPE) SET(CMAKE_EXECUTABLE_FORMAT "${CMAKE_EXECUTABLE_FORMAT}" PARENT_SCOPE) ENDFUNCTION(CMAKE_DETERMINE_COMPILER_ID_CHECK lang) + +#----------------------------------------------------------------------------- +# Function to query the compiler vendor. +# This uses a table with entries of the form +# list(APPEND CMAKE_${lang}_COMPILER_ID_VENDORS ${vendor}) +# set(CMAKE_${lang}_COMPILER_ID_VENDOR_FLAGS_${vendor} -some-vendor-flag) +# set(CMAKE_${lang}_COMPILER_ID_VENDOR_REGEX_${vendor} "Some Vendor Output") +# We try running the compiler with the flag for each vendor and +# matching its regular expression in the output. +FUNCTION(CMAKE_DETERMINE_COMPILER_ID_VENDOR lang) + FOREACH(vendor ${CMAKE_${lang}_COMPILER_ID_VENDORS}) + SET(flags ${CMAKE_${lang}_COMPILER_ID_VENDOR_FLAGS_${vendor}}) + SET(regex ${CMAKE_${lang}_COMPILER_ID_VENDOR_REGEX_${vendor}}) + EXECUTE_PROCESS( + COMMAND ${CMAKE_${lang}_COMPILER} + ${CMAKE_${lang}_COMPILER_ID_ARG1} + ${CMAKE_${lang}_COMPILER_ID_FLAGS_LIST} + ${flags} + WORKING_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR} + OUTPUT_VARIABLE output ERROR_VARIABLE output + RESULT_VARIABLE result + ) + IF("${output}" MATCHES "${regex}") + FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + "Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" " + "matched \"${regex}\":\n${output}") + SET(CMAKE_${lang}_COMPILER_ID "${vendor}" PARENT_SCOPE) + BREAK() + ELSE() + FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + "Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" " + "did not match \"${regex}\":\n${output}") + ENDIF() + ENDFOREACH() +ENDFUNCTION(CMAKE_DETERMINE_COMPILER_ID_VENDOR) |