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[CMake] Deprecate GCC_INSTALL_PREFIX #77537

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Jan 10, 2024
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[CMake] Deprecate GCC_INSTALL_PREFIX #77537

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6 changes: 6 additions & 0 deletions clang/CMakeLists.txt
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Expand Up @@ -193,6 +193,12 @@ set(C_INCLUDE_DIRS "" CACHE STRING
set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." )
set(DEFAULT_SYSROOT "" CACHE STRING
"Default <path> to all compiler invocations for --sysroot=<path>." )
if(GCC_INSTALL_PREFIX)
message(WARNING "GCC_INSTALL_PREFIX is deprecated and will be removed. Use "
"configuration files (https://clang.llvm.org/docs/UsersManual.html#configuration-files)"
"to specify the default --gcc-install-dir= or --gcc-triple=. --gcc-toolchain= is discouraged. "
"See https://github.com/llvm/llvm-project/pull/77537 for detail.")
endif()

set(ENABLE_LINKER_BUILD_ID OFF CACHE BOOL "pass --build-id to ld")

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6 changes: 6 additions & 0 deletions clang/docs/ReleaseNotes.rst
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Expand Up @@ -37,6 +37,12 @@ These changes are ones which we think may surprise users when upgrading to
Clang |release| because of the opportunity they pose for disruption to existing
code bases.

- The CMake variable ``GCC_INSTALL_PREFIX`` (which sets the default
``--gcc-toolchain=``) is deprecated and will be removed. Specify
``--gcc-install-dir=`` or ``--gcc-triple=`` in a `configuration file
<https://clang.llvm.org/docs/UsersManual.html#configuration-files>` as a
replacement.
(`#77537 <https://github.com/llvm/llvm-project/pull/77537>`_)

C/C++ Language Potentially Breaking Changes
-------------------------------------------
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