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[libc++] Update a comment about -nostdlib++ #67429

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[libc++] Update a comment about -nostdlib++ #67429

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6 changes: 4 additions & 2 deletions libcxx/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -624,9 +624,11 @@ function(cxx_link_system_libraries target)

# In order to remove just libc++ from the link step
# we need to use -nostdlib++ whenever it is supported.
# Unfortunately this cannot be used universally because for example g++ supports
# only -nodefaultlibs in which case all libraries will be removed and
# Unfortunately this cannot be used universally because g++ does not support
# -nostdlib++ before gcc 13 (https://gcc.gnu.org/gcc-13/changes.html) and needs
# to use -nodefaultlibs in which case all libraries will be removed and
# all libraries but c++ have to be added in manually.
# Once libc++ requires gcc 13+, this can be simplified.
if (CXX_SUPPORTS_NOSTDLIBXX_FLAG)
target_add_link_flags_if_supported(${target} PRIVATE "-nostdlib++")
else()
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