zefie/llvm-mingw
1
0 Fork 0
Code Activity

build-llvm: Add an option --use-linker=

Browse Source 
This allows overriding which linker to use.

Currently, building LLVM on Ubuntu 25.10 with these scripts fails,
if LLD is available. This, because the GCC on that distribution
produces object files that LLD (and gold) rejects during linking - see
https://github.com/llvm/llvm-project/issues/156667 for details.

By building with --use-linker=bfd, linking does succeed in that
configuration.

Also pass the same option through from build-all.sh.
This commit is contained in:
Martin Storsjö committed 2025-09-04 23:24:42 +03:00
1 parent 9347c21f74
commit e455d4c3cb
2 files changed
+11 -6
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

build-llvm.sh
+9 -4
View File
@@ -40,6 +40,9 @@ while [ $# -gt 0 ]; do
WITH_CLANG=1
BUILDDIR="$BUILDDIR-withclang"
;;
--use-linker=*)
USE_LINKER="${1#*=}"
;;
--thinlto)
LTO="thin"
BUILDDIR="$BUILDDIR-thinlto"
@@ -104,7 +107,7 @@ done
BUILDDIR="$BUILDDIR$ASSERTSSUFFIX"
if [ -z "$CHECKOUT_ONLY" ]; then
if [ -z "$PREFIX" ]; then
echo $0 [--enable-asserts] [--with-clang] [--thinlto] [--lto] [--instrumented[=type]] [--pgo[=profile]] [--disable-dylib] [--full-llvm] [--with-python] [--disable-lldb] [--disable-clang-tools-extra] [--host=triple] [--no-llvm-tool-reuse] [--macos-native-tools] dest
echo $0 [--enable-asserts] [--with-clang] [--use-linker=linker] [--thinlto] [--lto] [--instrumented[=type]] [--pgo[=profile]] [--disable-dylib] [--full-llvm] [--with-python] [--disable-lldb] [--disable-clang-tools-extra] [--host=triple] [--no-llvm-tool-reuse] [--macos-native-tools] dest
exit 1
fi
@@ -190,7 +193,7 @@ if [ -n "$HOST" ]; then
if [ -n "$WITH_CLANG" ]; then
CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_C_COMPILER=clang"
CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_CXX_COMPILER=clang++"
CMAKEFLAGS="$CMAKEFLAGS -DLLVM_USE_LINKER=lld"
CMAKEFLAGS="$CMAKEFLAGS -DLLVM_USE_LINKER=${USE_LINKER:-lld}"
CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_ASM_COMPILER_TARGET=$HOST"
CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_C_COMPILER_TARGET=$HOST"
CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_CXX_COMPILER_TARGET=$HOST"
@@ -267,12 +270,14 @@ elif [ -n "$WITH_CLANG" ]; then
# tools.
CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_C_COMPILER=clang"
CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_CXX_COMPILER=clang++"
CMAKEFLAGS="$CMAKEFLAGS -DLLVM_USE_LINKER=lld"
CMAKEFLAGS="$CMAKEFLAGS -DLLVM_USE_LINKER=${USE_LINKER:-lld}"
else
# Native compilation with the system default compiler.
# Use a faster linker, if available.
if command -v ld.lld >/dev/null; then
if [ -n "$USE_LINKER" ]; then
CMAKEFLAGS="$CMAKEFLAGS -DLLVM_USE_LINKER=$USE_LINKER"
elif command -v ld.lld >/dev/null; then
CMAKEFLAGS="$CMAKEFLAGS -DLLVM_USE_LINKER=lld"
elif command -v ld.gold >/dev/null; then
CMAKEFLAGS="$CMAKEFLAGS -DLLVM_USE_LINKER=gold"