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CMakeDetermineCompilerId: Try matching compiler output to detect id 

Some compilers can only be distinguished by their compilation output
rather than preprocessor symbols or special flags.  Add infrastructure
to determine the compiler id by matching output.
This commit is contained in:
Brad King 2015-06-18 11:28:36 -04:00
parent 5f0dad75a9
commit 0d204c1c1d
1 changed files with 19 additions and 0 deletions
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19
Modules/CMakeDetermineCompilerId.cmake
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@ -38,6 +38,10 @@ function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src)
""
${CMAKE_${lang}_COMPILER_ID_TEST_FLAGS})
CMAKE_DETERMINE_COMPILER_ID_BUILD("${lang}" "${flags}" "${src}")
CMAKE_DETERMINE_COMPILER_ID_MATCH_VENDOR("${lang}" "${COMPILER_${lang}_PRODUCED_OUTPUT}")
if(CMAKE_${lang}_COMPILER_ID)
break()
endif()
foreach(file ${COMPILER_${lang}_PRODUCED_FILES})
CMAKE_DETERMINE_COMPILER_ID_CHECK("${lang}" "${CMAKE_${lang}_COMPILER_ID_DIR}/${file}" "${src}")
endforeach()
@ -358,6 +362,7 @@ ${CMAKE_${lang}_COMPILER_ID_OUTPUT}
# No output files should be inspected.
set(COMPILER_${lang}_PRODUCED_FILES)
set(COMPILER_${lang}_PRODUCED_OUTPUT)
else()
# Compilation succeeded.
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
@ -398,10 +403,24 @@ ${CMAKE_${lang}_COMPILER_ID_OUTPUT}
"${src}\" did not produce an executable in \""
"${CMAKE_${lang}_COMPILER_ID_DIR}\".\n\n")
endif()
set(COMPILER_${lang}_PRODUCED_OUTPUT "${CMAKE_${lang}_COMPILER_ID_OUTPUT}")
endif()
# Return the files produced by the compilation.
set(COMPILER_${lang}_PRODUCED_FILES "${COMPILER_${lang}_PRODUCED_FILES}" PARENT_SCOPE)
set(COMPILER_${lang}_PRODUCED_OUTPUT "${COMPILER_${lang}_PRODUCED_OUTPUT}" PARENT_SCOPE)
endfunction()
#-----------------------------------------------------------------------------
# Function to extract the compiler id from compiler output.
function(CMAKE_DETERMINE_COMPILER_ID_MATCH_VENDOR lang output)
foreach(vendor ${CMAKE_${lang}_COMPILER_ID_MATCH_VENDORS})
if(output MATCHES "${CMAKE_${lang}_COMPILER_ID_MATCH_VENDOR_REGEX_${vendor}}")
set(CMAKE_${lang}_COMPILER_ID "${vendor}")
endif()
endforeach()
set(CMAKE_${lang}_COMPILER_ID "${CMAKE_${lang}_COMPILER_ID}" PARENT_SCOPE)
endfunction()
#-----------------------------------------------------------------------------