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CMake/Tests/RunCMake/CompileFeatures/RunCMakeTest.cmake

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Features: Add cxx_auto_type. Record the availability of this feature for GNU 4.8 on (UNIX AND NOT APPLE) only. In the future, availability can be recorded for earlier GNU, for other platforms and for other compilers. Initially the affected configurations are as restricted as possible to allow for easy testing while extending the features vector in only one dimension. The error message when using the set_property API directly is not very good, but follow up commits will provide origin debugging of the property and a target_compile_features command which will provide a configure-time backtrace when possible.
2014-04-02 15:34:16 +02:00
include(RunCMake)
run_cmake(NotAFeature)
cmTarget: Allow populating COMPILE_FEATURES using generator expressions. Delay validation of the content as a feature if it contains a generator expression. It will be checked again at generate-time after evaluation.
2013-10-22 15:05:49 +02:00
run_cmake(NotAFeatureGenex)
cmTarget: Transitively evaluate compiler features. Extend the interface of the target_compile_features command with PUBLIC and INTERFACE keywords. Populate the INTERFACE_COMPILER_FEATURES target property if they are set. Consume the INTERFACE_COMPILER_FEATURES target property from linked dependent targets to determine the final required compiler features and the compile flag, if needed. Use the same pattern of origin-debugging which is used for other build properties.
2013-10-22 01:40:47 +02:00
run_cmake(NotAFeatureTransitive)
run_cmake(NotAFeature_OriginDebug)
run_cmake(NotAFeature_OriginDebugGenex)
run_cmake(NotAFeature_OriginDebugTransitive)
Add target_compile_features command. This can be used to set the compiler features required by particular targets. An error is issued at CMake time if the compiler does not support the required feature. If a language dialect flag is required by the features used, that will be added automatically. Base the target_compile_features command on cmTargetPropCommandBase. This gives us 'free' handling of IMPORTED, ALIAS, INTERFACE, non-compilable and missing targets.
2013-10-13 14:25:08 +02:00
run_cmake(NotAFeature_OriginDebug_target_compile_features)
Features: FATAL_ERROR on compilers with no recorded features. Users of the new target_compile_features command are expected to check the existence of the CMAKE_CXX_COMPILE_FEATURES variable before attempting to use it to require features.
2014-04-15 18:09:21 +02:00
run_cmake(generate_feature_list)
Features: Extend concept to C language. Add properties and variables corresponding to CXX equivalents. Add features for c_function_prototypes (C90), c_restrict (C99), c_variadic_macros (C99) and c_static_assert (C11). This feature set can be extended later. Add a <PREFIX>_RESTRICT symbol define to WriteCompilerDetectionHeader to conditionally represent the c_restrict feature.
2013-11-04 01:15:43 +01:00
file(READ
"${RunCMake_BINARY_DIR}/generate_feature_list-build/c_features.txt"
C_FEATURES
)
Features: FATAL_ERROR on compilers with no recorded features. Users of the new target_compile_features command are expected to check the existence of the CMAKE_CXX_COMPILE_FEATURES variable before attempting to use it to require features.
2014-04-15 18:09:21 +02:00
file(READ
Tests: Make CompileFeatures feature list lang-specific.
2014-05-10 13:05:46 +02:00
"${RunCMake_BINARY_DIR}/generate_feature_list-build/cxx_features.txt"
CXX_FEATURES
Features: FATAL_ERROR on compilers with no recorded features. Users of the new target_compile_features command are expected to check the existence of the CMAKE_CXX_COMPILE_FEATURES variable before attempting to use it to require features.
2014-04-15 18:09:21 +02:00
)
Features: Extend concept to C language. Add properties and variables corresponding to CXX equivalents. Add features for c_function_prototypes (C90), c_restrict (C99), c_variadic_macros (C99) and c_static_assert (C11). This feature set can be extended later. Add a <PREFIX>_RESTRICT symbol define to WriteCompilerDetectionHeader to conditionally represent the c_restrict feature.
2013-11-04 01:15:43 +01:00
if (NOT C_FEATURES)
run_cmake(NoSupportedCFeatures)
run_cmake(NoSupportedCFeaturesGenex)
endif()
Tests: Make CompileFeatures feature list lang-specific.
2014-05-10 13:05:46 +02:00
if (NOT CXX_FEATURES)
Features: FATAL_ERROR on compilers with no recorded features. Users of the new target_compile_features command are expected to check the existence of the CMAKE_CXX_COMPILE_FEATURES variable before attempting to use it to require features.
2014-04-15 18:09:21 +02:00
run_cmake(NoSupportedCxxFeatures)
run_cmake(NoSupportedCxxFeaturesGenex)
Features: Add COMPILE_FEATURES generator expression. Allow setting build properties based on the features available for a target. The availability of features is determined at generate-time by evaluating the link implementation. Ensure that the <LANG>_STANDARD determined while evaluating COMPILE_FEATURES in the link implementation is not lower than that provided by the INTERFACE of the link implementation. This is similar to handling of transitive properties such as POSITION_INDEPENDENT_CODE.
2014-05-15 11:32:30 +02:00
else()
run_cmake(LinkImplementationFeatureCycle)
run_cmake(LinkImplementationFeatureCycleSolved)
if (";${CXX_FEATURES};" MATCHES ";cxx_final;")
set(RunCMake_TEST_OPTIONS "-DHAVE_FINAL=1")
endif()
run_cmake(NonValidTarget1)
run_cmake(NonValidTarget2)
unset(RunCMake_TEST_OPTIONS)
Features: FATAL_ERROR on compilers with no recorded features. Users of the new target_compile_features command are expected to check the existence of the CMAKE_CXX_COMPILE_FEATURES variable before attempting to use it to require features.
2014-04-15 18:09:21 +02:00
endif()
cmTarget: Add CXX_STANDARD_REQUIRED to control decay.
2014-04-30 18:07:38 +02:00
foreach(standard 98 11)
file(READ
"${RunCMake_BINARY_DIR}/generate_feature_list-build/cxx${standard}_flag.txt"
CXX${standard}_FLAG
)
if (CXX${standard}_FLAG STREQUAL NOTFOUND)
run_cmake(RequireCXX${standard})
run_cmake(RequireCXX${standard}Variable)
endif()
if (CXX${standard}EXT_FLAG STREQUAL NOTFOUND)
run_cmake(RequireCXX${standard}Ext)
run_cmake(RequireCXX${standard}ExtVariable)
endif()
endforeach()
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