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Features: Test cycle diagnostic with language standard meta-feature

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The `cxx_static_assert` feature may be available in C++ 98 mode of some
compilers or not available at all in others.  Intstead of using an
individual feature to test cyclic requirement of a feature requiring
C++ 11, use the `std_cxx_11` meta-feature that has exactly this meaning.
This commit is contained in:
Brad King 2016-10-28 09:43:34 -04:00
parent 6d5fb0e0d0
commit df252db15a
2 changed files with 3 additions and 3 deletions
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4
Tests/RunCMake/CompileFeatures/LinkImplementationFeatureCycle.cmake
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@ -3,13 +3,13 @@ add_library(empty1 empty.cpp)
add_library(empty2 INTERFACE)
add_library(empty3 INTERFACE)
target_compile_features(empty3 INTERFACE cxx_static_assert)
target_compile_features(empty3 INTERFACE cxx_std_11)
target_link_libraries(empty1
# When starting, $<COMPILE_FEATURES:cxx_auto_type> is '0', so 'freeze' the
# CXX_STANDARD at 98 during computation.
$<$<COMPILE_FEATURES:cxx_auto_type>:empty2>
# This would add cxx_static_assert, but that would require CXX_STANDARD = 11,
# This would add cxx_std_11, but that would require CXX_STANDARD = 11,
# which is not allowed after freeze. Report an error.
empty3
)

2
Tests/RunCMake/CompileFeatures/LinkImplementationFeatureCycleSolved.cmake
View File

@ -3,7 +3,7 @@ add_library(empty1 empty.cpp)
add_library(empty2 INTERFACE)
add_library(empty3 INTERFACE)
target_compile_features(empty3 INTERFACE cxx_static_assert)
target_compile_features(empty3 INTERFACE cxx_std_11)
target_link_libraries(empty1
$<$<COMPILE_FEATURES:cxx_nullptr>:empty2>