mirror of
https://github.com/NotAShelf/microfetch.git
synced 2026-04-12 12:57:41 +00:00
1539533c54Binary-specific link flags (-nostartfiles, -static, section stripping) now use cargo:rustc-link-arg-bin so they don't break proc-macro or build-script linking. ld-wrapper only strips sections from static binaries.
38 lines
1.1 KiB
Bash
Executable file
38 lines
1.1 KiB
Bash
Executable file
#!/usr/bin/env sh
|
|
# Invoke mold, then strip junk sections from the output binary with objcopy.
|
|
# This (more or less) removes sections that mold cannot discard itself, suck as:
|
|
# - .eh_frame / .eh_frame_hdr - unwind tables from compiler_builtins
|
|
# - .dynstr - mold emits this, even for fully static binaries
|
|
# - .comment - compiler version string
|
|
#
|
|
# We forward everything to mold via -fuse-ld, then post-process the output in place.
|
|
|
|
set -eu
|
|
|
|
# Locate the output file and detect static linking
|
|
IS_STATIC=0
|
|
OUTPUT=""
|
|
prev=""
|
|
for arg in "$@"; do
|
|
case "$arg" in
|
|
-static) IS_STATIC=1 ;;
|
|
esac
|
|
if [ "$prev" = "-o" ]; then
|
|
OUTPUT="$arg"
|
|
fi
|
|
prev="$arg"
|
|
done
|
|
|
|
# Invoke mold via the cc driver, forward all original arguments
|
|
cc -fuse-ld=mold "$@"
|
|
|
|
# Only strip sections from fully static binaries.
|
|
# Dynamic executables (i.e. build scripts, proc-macros) need .dynstr at runtime.
|
|
if [ "$IS_STATIC" = 1 ] && [ -n "$OUTPUT" ] && [ -f "$OUTPUT" ]; then
|
|
objcopy \
|
|
--remove-section=.eh_frame \
|
|
--remove-section=.eh_frame_hdr \
|
|
--remove-section=.dynstr \
|
|
--remove-section=.comment \
|
|
"$OUTPUT"
|
|
fi
|