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[libc][cmake] Fix LIBC_TARGET_OS query from compiler triple for darwin.

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Currently LIBC_TARGET_OS query from compiler triple returns `apple` for
macOS.  This change will fix it back to `darwin` as before.

Differential Revision: https://reviews.llvm.org/D141282
This commit is contained in:
Tue Ly
2023-01-09 10:05:41 -05:00
parent 57b491b5c1
commit a369bb8a3b
1 changed files with 12 additions and 0 deletions
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12
libc/cmake/modules/LLVMLibCArchitectures.cmake
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@@ -46,6 +46,8 @@ function(get_arch_and_system_from_triple triple arch_var sys_var)
if(target_arch MATCHES "^mips")
set(target_arch "mips")
elseif(target_arch MATCHES "^arm")
# TODO(lntue): Shall we separate `arm64`? It is currently recognized as
# `arm` here.
set(target_arch "arm")
elseif(target_arch MATCHES "^aarch64")
set(target_arch "aarch64")
@@ -59,6 +61,16 @@ function(get_arch_and_system_from_triple triple arch_var sys_var)
set(${arch_var} ${target_arch} PARENT_SCOPE)
list(GET triple_comps ${system_index} target_sys)
# Correcting OS name for Apple's systems.
if(target_sys STREQUAL "apple")
list(GET triple_comps 2 target_sys)
endif()
# Strip version from `darwin###`
if(target_sys MATCHES "^darwin")
set(target_sys "darwin")
endif()
set(${sys_var} ${target_sys} PARENT_SCOPE)
endfunction(get_arch_and_system_from_triple)