zig/cmake/Findlld.cmake
Cody Tapscott dd70336f3a CMake: Use NAMES_PER_DIR in all lookups
CMake has a surprising default behavior where looking up a library by
multiple names gives the name order higher priority than the directory
search order.

For example, if your system provides "llvm-config-14" and
CMAKE_PREFIX_PATH includes "llvm-config", CMake will always end up
choosing the system-provided llvm-config-14.

This change add NAMES_PER_DIR to request the more sensible behavior:
directory search order has higher priority than name order, so
CMAKE_PREFIX_PATH always wins over system-provided tools/libraries.
2022-07-14 22:18:10 -04:00

59 lines
1.8 KiB
CMake

# Copyright (c) 2017 Andrew Kelley
# This file is MIT licensed.
# See http://opensource.org/licenses/MIT
# LLD_FOUND
# LLD_INCLUDE_DIRS
# LLD_LIBRARIES
find_path(LLD_INCLUDE_DIRS NAMES lld/Common/Driver.h
PATHS
/usr/lib/llvm-14/include
/usr/local/llvm140/include
/usr/local/llvm14/include
/usr/local/opt/llvm@14/include
/opt/homebrew/opt/llvm@14/include
/mingw64/include)
find_library(LLD_LIBRARY NAMES lld-14.0 lld140 lld NAMES_PER_DIR
PATHS
/usr/lib/llvm-14/lib
/usr/local/llvm140/lib
/usr/local/llvm14/lib
/usr/local/opt/llvm@14/lib
/opt/homebrew/opt/llvm@14/lib
)
if(EXISTS ${LLD_LIBRARY})
set(LLD_LIBRARIES ${LLD_LIBRARY})
else()
macro(FIND_AND_ADD_LLD_LIB _libname_)
string(TOUPPER ${_libname_} _prettylibname_)
find_library(LLD_${_prettylibname_}_LIB NAMES ${_libname_} NAMES_PER_DIR
PATHS
${LLD_LIBDIRS}
/usr/lib/llvm-14/lib
/usr/local/llvm140/lib
/usr/local/llvm14/lib
/usr/local/opt/llvm@14/lib
/opt/homebrew/opt/llvm@14/lib
/mingw64/lib
/c/msys64/mingw64/lib
c:/msys64/mingw64/lib)
if(LLD_${_prettylibname_}_LIB)
set(LLD_LIBRARIES ${LLD_LIBRARIES} ${LLD_${_prettylibname_}_LIB})
endif()
endmacro(FIND_AND_ADD_LLD_LIB)
FIND_AND_ADD_LLD_LIB(lldMinGW)
FIND_AND_ADD_LLD_LIB(lldELF)
FIND_AND_ADD_LLD_LIB(lldCOFF)
FIND_AND_ADD_LLD_LIB(lldWasm)
FIND_AND_ADD_LLD_LIB(lldMachO)
FIND_AND_ADD_LLD_LIB(lldCommon)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(lld DEFAULT_MSG LLD_LIBRARIES LLD_INCLUDE_DIRS)
mark_as_advanced(LLD_INCLUDE_DIRS LLD_LIBRARIES)