forked from OSchip/llvm-project
[libc++] Build the dylib with -faligned-allocation
This avoids issues when building the dylib for deployment targets that don't support aligned allocation, where Clang normally triggers an error to warn users their code would break at runtime when back-deployed. Since we're building the dylib itself, which contains the aligned allocation functions, we don't want to trigger that error. Differential Revision: https://reviews.llvm.org/D84418
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@ -526,6 +526,11 @@ function(cxx_add_basic_build_flags target)
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CXX_STANDARD_REQUIRED YES
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CXX_EXTENSIONS NO)
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# When building the dylib, don't warn for unavailable aligned allocation
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# functions based on the deployment target -- they are always available
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# because they are provided by the dylib itself.
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target_add_compile_flags_if_supported(${target} PRIVATE -faligned-allocation)
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# On all systems the system c++ standard library headers need to be excluded.
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# MSVC only has -X, which disables all default includes; including the crt.
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# Thus, we do nothing and hope we don't accidentally include any of the C++
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