# Distributed under the OSI-approved BSD 3-Clause License. See accompanying # file Copyright.txt or https://cmake.org/licensing for details. macro(__determine_compiler_id_test testflags_var userflags_var) set(_CMAKE_${lang}_COMPILER_ID_LOG "") separate_arguments(testflags UNIX_COMMAND "${${testflags_var}}") CMAKE_DETERMINE_COMPILER_ID_BUILD("${lang}" "${testflags}" "${${userflags_var}}" "${src}") CMAKE_DETERMINE_COMPILER_ID_MATCH_VENDOR("${lang}" "${COMPILER_${lang}_PRODUCED_OUTPUT}") if(NOT CMAKE_${lang}_COMPILER_ID) foreach(file ${COMPILER_${lang}_PRODUCED_FILES}) CMAKE_DETERMINE_COMPILER_ID_CHECK("${lang}" "${CMAKE_${lang}_COMPILER_ID_DIR}/${file}" "${src}") endforeach() endif() message(CONFIGURE_LOG "${_CMAKE_${lang}_COMPILER_ID_LOG}") unset(_CMAKE_${lang}_COMPILER_ID_LOG) endmacro() # Function to compile a source file to identify the compiler. 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Construct compiler version from components if needed. if(NOT DEFINED COMPILER_VERSION AND HAVE_COMPILER_VERSION_MAJOR) set(COMPILER_VERSION "${COMPILER_VERSION_MAJOR}") if(HAVE_COMPILER_VERSION_MINOR) string(APPEND COMPILER_VERSION ".${COMPILER_VERSION_MINOR}") if(HAVE_COMPILER_VERSION_PATCH) string(APPEND COMPILER_VERSION ".${COMPILER_VERSION_PATCH}") if(HAVE_COMPILER_VERSION_TWEAK) string(APPEND COMPILER_VERSION ".${COMPILER_VERSION_TWEAK}") endif() endif() endif() endif() # Detect the exact architecture from the PE header. if(WIN32) # The offset to the PE signature is stored at 0x3c. file(READ ${file} peoffsethex LIMIT 1 OFFSET 60 HEX) if(NOT peoffsethex STREQUAL "") string(SUBSTRING "${peoffsethex}" 0 1 peoffsethex1) string(SUBSTRING "${peoffsethex}" 1 1 peoffsethex2) set(peoffsetexpression "${peoffsethex1} * 16 + ${peoffsethex2}") string(REPLACE "a" "10" peoffsetexpression "${peoffsetexpression}") string(REPLACE "b" "11" peoffsetexpression "${peoffsetexpression}") string(REPLACE "c" "12" peoffsetexpression "${peoffsetexpression}") string(REPLACE "d" "13" peoffsetexpression "${peoffsetexpression}") string(REPLACE "e" "14" peoffsetexpression "${peoffsetexpression}") string(REPLACE "f" "15" peoffsetexpression "${peoffsetexpression}") math(EXPR peoffset "${peoffsetexpression}") file(READ ${file} peheader LIMIT 6 OFFSET ${peoffset} HEX) if(peheader STREQUAL "50450000a201") set(ARCHITECTURE_ID "SH3") elseif(peheader STREQUAL "50450000a301") set(ARCHITECTURE_ID "SH3DSP") elseif(peheader STREQUAL "50450000a601") set(ARCHITECTURE_ID "SH4") elseif(peheader STREQUAL "50450000a801") set(ARCHITECTURE_ID "SH5") endif() endif() endif() # Check if a valid compiler and platform were found. if(COMPILER_ID AND NOT COMPILER_ID_TWICE) set(CMAKE_${lang}_COMPILER_ID "${COMPILER_ID}") set(CMAKE_${lang}_PLATFORM_ID "${PLATFORM_ID}") set(CMAKE_${lang}_COMPILER_ARCHITECTURE_ID "${ARCHITECTURE_ID}") set(MSVC_${lang}_ARCHITECTURE_ID "${ARCHITECTURE_ID}") set(CMAKE_${lang}_COMPILER_VERSION "${COMPILER_VERSION}") set(CMAKE_${lang}_COMPILER_VERSION_INTERNAL "${COMPILER_VERSION_INTERNAL}") set(CMAKE_${lang}_SIMULATE_ID "${SIMULATE_ID}") set(CMAKE_${lang}_SIMULATE_VERSION "${SIMULATE_VERSION}") endif() # Check the compiler identification string. if(CMAKE_${lang}_COMPILER_ID) # The compiler identification was found. string(APPEND _CMAKE_${lang}_COMPILER_ID_LOG "The ${lang} compiler identification is ${CMAKE_${lang}_COMPILER_ID}, found in:\n" " ${file}\n\n") else() # The compiler identification could not be found. string(APPEND _CMAKE_${lang}_COMPILER_ID_LOG "The ${lang} compiler identification could not be found in:\n" " ${file}\n\n") endif() set(_CMAKE_${lang}_COMPILER_ID_LOG "${_CMAKE_${lang}_COMPILER_ID_LOG}" PARENT_SCOPE) endif() # try to figure out the executable format: ELF, COFF, Mach-O if(NOT CMAKE_EXECUTABLE_FORMAT) file(READ ${file} CMAKE_EXECUTABLE_MAGIC LIMIT 4 HEX) # ELF files start with 0x7f"ELF" if("${CMAKE_EXECUTABLE_MAGIC}" STREQUAL "7f454c46") set(CMAKE_EXECUTABLE_FORMAT "ELF" CACHE INTERNAL "Executable file format") endif() # # COFF (.exe) files start with "MZ" # if("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "4d5a....") # set(CMAKE_EXECUTABLE_FORMAT "COFF" CACHE INTERNAL "Executable file format") # endif() # # Mach-O files start with MH_MAGIC or MH_CIGAM if("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "feedface|cefaedfe|feedfacf|cffaedfe") set(CMAKE_EXECUTABLE_FORMAT "MACHO" CACHE INTERNAL "Executable file format") endif() # XCOFF files start with 0x01 followed by 0xDF (32-bit) or 0xF7 (64-bit). if("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "^01(df|f7)") set(CMAKE_EXECUTABLE_FORMAT "XCOFF" CACHE INTERNAL "Executable file format") endif() endif() # Return the information extracted. set(CMAKE_${lang}_COMPILER_ID "${CMAKE_${lang}_COMPILER_ID}" PARENT_SCOPE) set(CMAKE_${lang}_PLATFORM_ID "${CMAKE_${lang}_PLATFORM_ID}" PARENT_SCOPE) set(CMAKE_${lang}_COMPILER_ARCHITECTURE_ID "${CMAKE_${lang}_COMPILER_ARCHITECTURE_ID}" PARENT_SCOPE) set(MSVC_${lang}_ARCHITECTURE_ID "${MSVC_${lang}_ARCHITECTURE_ID}" PARENT_SCOPE) set(CMAKE_${lang}_COMPILER_VERSION "${CMAKE_${lang}_COMPILER_VERSION}" PARENT_SCOPE) set(CMAKE_${lang}_COMPILER_VERSION_INTERNAL "${CMAKE_${lang}_COMPILER_VERSION_INTERNAL}" PARENT_SCOPE) set(CMAKE_${lang}_COMPILER_WRAPPER "${COMPILER_WRAPPER}" PARENT_SCOPE) set(CMAKE_${lang}_SIMULATE_ID "${CMAKE_${lang}_SIMULATE_ID}" PARENT_SCOPE) set(CMAKE_${lang}_SIMULATE_VERSION "${CMAKE_${lang}_SIMULATE_VERSION}" PARENT_SCOPE) set(COMPILER_QNXNTO "${COMPILER_QNXNTO}" PARENT_SCOPE) set(CMAKE_${lang}_STANDARD_COMPUTED_DEFAULT "${CMAKE_${lang}_STANDARD_COMPUTED_DEFAULT}" PARENT_SCOPE) set(CMAKE_${lang}_EXTENSIONS_COMPUTED_DEFAULT "${CMAKE_${lang}_EXTENSIONS_COMPUTED_DEFAULT}" PARENT_SCOPE) endfunction() #----------------------------------------------------------------------------- # 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_${vendor} "Some Vendor Output") # We try running the compiler with the flag for each vendor and # matching its regular expression in the output. function(CMAKE_DETERMINE_COMPILER_ID_VENDOR lang userflags) if(NOT CMAKE_${lang}_COMPILER_ID_DIR) # We get here when this function is called not from within CMAKE_DETERMINE_COMPILER_ID() # This is done e.g. for detecting the compiler ID for assemblers. # Compute the directory in which to run the test and Create a clean working directory. set(CMAKE_${lang}_COMPILER_ID_DIR ${CMAKE_PLATFORM_INFO_DIR}/CompilerId${lang}) file(REMOVE_RECURSE ${CMAKE_${lang}_COMPILER_ID_DIR}) file(MAKE_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR}) endif() # Save the current LC_ALL, LC_MESSAGES, and LANG environment variables # and set them to "C" so we get the expected output to match. set(_orig_lc_all $ENV{LC_ALL}) set(_orig_lc_messages $ENV{LC_MESSAGES}) set(_orig_lang $ENV{LANG}) set(ENV{LC_ALL} C) set(ENV{LC_MESSAGES} C) set(ENV{LANG} C) 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} ${userflags} ${flags} WORKING_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR} OUTPUT_VARIABLE output ERROR_VARIABLE output RESULT_VARIABLE result TIMEOUT 10 ) if("${output}" MATCHES "${regex}") message(CONFIGURE_LOG "Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" " "matched \"${regex}\":\n${output}") set(CMAKE_${lang}_COMPILER_ID "${vendor}" PARENT_SCOPE) set(CMAKE_${lang}_COMPILER_ID_OUTPUT "${output}" PARENT_SCOPE) set(CMAKE_${lang}_COMPILER_ID_VENDOR_MATCH "${CMAKE_MATCH_1}" PARENT_SCOPE) break() else() if("${result}" MATCHES "timeout") message(CONFIGURE_LOG "Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" " "terminated after 10 s due to timeout.") else() message(CONFIGURE_LOG "Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" " "did not match \"${regex}\":\n${output}") endif() endif() endforeach() # Restore original LC_ALL, LC_MESSAGES, and LANG set(ENV{LC_ALL} ${_orig_lc_all}) set(ENV{LC_MESSAGES} ${_orig_lc_messages}) set(ENV{LANG} ${_orig_lang}) endfunction() function(CMAKE_DETERMINE_MSVC_SHOWINCLUDES_PREFIX lang userflags) # Run this MSVC-compatible compiler to detect what the /showIncludes # option displays. We can use a C source even with the C++ compiler # because MSVC-compatible compilers handle both and show the same output. set(showdir ${CMAKE_BINARY_DIR}/CMakeFiles/ShowIncludes) file(WRITE ${showdir}/foo.h "\n") file(WRITE ${showdir}/main.c "#include \"foo.h\" \nint main(){}\n") execute_process( COMMAND "${CMAKE_${lang}_COMPILER}" ${CMAKE_${lang}_COMPILER_ID_ARG1} ${userflags} /nologo /showIncludes /c main.c WORKING_DIRECTORY ${showdir} OUTPUT_VARIABLE out ERROR_VARIABLE err RESULT_VARIABLE res ENCODING AUTO # cl prints in console output code page ) string(REPLACE "\n" "\n " msg " ${out}") if(res EQUAL 0 AND "${out}" MATCHES "(^|\n)([^:\n][^:\n]+:[^:\n]*[^: \n][^: \n]:?[ \t]+)([A-Za-z]:\\\\|\\./|/)") set(CMAKE_${lang}_CL_SHOWINCLUDES_PREFIX "${CMAKE_MATCH_2}" PARENT_SCOPE) string(APPEND msg "\nFound prefix \"${CMAKE_MATCH_2}\"") else() set(CMAKE_${lang}_CL_SHOWINCLUDES_PREFIX "" PARENT_SCOPE) endif() message(CONFIGURE_LOG "Detecting ${lang} compiler /showIncludes prefix:\n${msg}\n") endfunction()