diff options
Diffstat (limited to 'build/build-clang/llvmorg-16-init-15447-g8d3ab9dfc4d4.patch')
| -rw-r--r-- | build/build-clang/llvmorg-16-init-15447-g8d3ab9dfc4d4.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/build/build-clang/llvmorg-16-init-15447-g8d3ab9dfc4d4.patch b/build/build-clang/llvmorg-16-init-15447-g8d3ab9dfc4d4.patch new file mode 100644 index 0000000000..76bbebdf72 --- /dev/null +++ b/build/build-clang/llvmorg-16-init-15447-g8d3ab9dfc4d4.patch @@ -0,0 +1,48 @@ +From 8d3ab9dfc4d49062e045d6d5db419975b81da7e4 Mon Sep 17 00:00:00 2001 +From: serge-sans-paille <sguelton@mozilla.com> +Date: Thu, 22 Dec 2022 10:48:37 +0100 +Subject: [PATCH] Properly support LLVM_ENABLE_LLD on Windows + +Currently, setting -DLLVM_ENABLE_LLD=ON on windows also requires setting +-DCMAKE_LINKER=lld-link.exe. This is both misleading and redundant. + +Fix this by trying to find llvm-link.exe when -DLLVM_ENABLE_LLD=ON is +set and CMAKE_LINKER is not, and aborting otherwise. + +Differential Revision: https://reviews.llvm.org/D140534 +--- + llvm/cmake/modules/HandleLLVMOptions.cmake | 15 ++++++++++++++- + 1 file changed, 14 insertions(+), 1 deletion(-) + +diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake +index 7f141d93d4c2..4f4a64bc02eb 100644 +--- a/llvm/cmake/modules/HandleLLVMOptions.cmake ++++ b/llvm/cmake/modules/HandleLLVMOptions.cmake +@@ -293,10 +293,23 @@ if( LLVM_ENABLE_LLD ) + if ( LLVM_USE_LINKER ) + message(FATAL_ERROR "LLVM_ENABLE_LLD and LLVM_USE_LINKER can't be set at the same time") + endif() ++ + # In case of MSVC cmake always invokes the linker directly, so the linker + # should be specified by CMAKE_LINKER cmake variable instead of by -fuse-ld + # compiler option. +- if ( NOT MSVC ) ++ if ( MSVC ) ++ if(NOT CMAKE_LINKER MATCHES "lld-link") ++ get_filename_component(CXX_COMPILER_DIR ${CMAKE_CXX_COMPILER} DIRECTORY) ++ get_filename_component(C_COMPILER_DIR ${CMAKE_C_COMPILER} DIRECTORY) ++ find_program(LLD_LINK NAMES "lld-link" "lld-link.exe" HINTS ${CXX_COMPILER_DIR} ${C_COMPILER_DIR} DOC "lld linker") ++ if(NOT LLD_LINK) ++ message(FATAL_ERROR ++ "LLVM_ENABLE_LLD set, but cannot find lld-link. " ++ "Consider setting CMAKE_LINKER to lld-link path.") ++ endif() ++ set(CMAKE_LINKER ${LLD_LINK}) ++ endif() ++ else() + set(LLVM_USE_LINKER "lld") + endif() + endif() +-- +2.38.1 + |