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[libc++] Require a C++20 capable compiler. 

This enforces libcxx and its benchmarks are compiled by a C++20 capable
compiler. Based on review comments in D103413.

Differential Revision: https://reviews.llvm.org/D110338
This commit is contained in:
Mark de Wever 2021-09-23 12:15:02 -04:00 committed by Louis Dionne
parent 09e71c367a
commit f881776175
2 changed files with 2 additions and 2 deletions
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2
libcxx/CMakeLists.txt
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@ -537,7 +537,7 @@ function(cxx_add_basic_build_flags target)
# in the dylib. C++20 is needed to use char8_t.
set_target_properties(${target} PROPERTIES
CXX_STANDARD 20
CXX_STANDARD_REQUIRED NO
CXX_STANDARD_REQUIRED YES
CXX_EXTENSIONS NO)
# When building the dylib, don't warn for unavailable aligned allocation

2
libcxx/benchmarks/CMakeLists.txt
View File

@ -81,7 +81,7 @@ set(BENCHMARK_LIBCXX_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-libcxx)
set(BENCHMARK_NATIVE_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-native)
add_library( cxx-benchmarks-flags INTERFACE)
target_compile_features( cxx-benchmarks-flags INTERFACE cxx_std_17)
target_compile_features( cxx-benchmarks-flags INTERFACE cxx_std_20)
target_compile_options( cxx-benchmarks-flags INTERFACE -O2 -fsized-deallocation)
target_include_directories(cxx-benchmarks-flags INTERFACE "${BENCHMARK_LIBCXX_INSTALL}/include"
INTERFACE "${LIBCXX_SOURCE_DIR}/test/support")