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NotAShelf
45545c8854
Signed-off-by: NotAShelf <raf@notashelf.dev> Change-Id: I3ee0ef703eec1a52b750a2ee8b4d33216a6a6964
38 lines
1.1 KiB
Bash
Executable file
38 lines
1.1 KiB
Bash
Executable file
#!/usr/bin/env sh
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# Invoke mold, then strip junk sections from the output binary with objcopy.
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# This (more or less) removes sections that mold cannot discard itself, such as:
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# - .eh_frame / .eh_frame_hdr - unwind tables from compiler_builtins
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# - .dynstr - mold emits this, even for fully static binaries
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# - .comment - compiler version string
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#
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# We forward everything to mold via -fuse-ld, then post-process the output in place.
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set -eu
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# Locate the output file and detect static linking
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IS_STATIC=0
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OUTPUT=""
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prev=""
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for arg in "$@"; do
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case "$arg" in
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-static) IS_STATIC=1 ;;
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esac
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if [ "$prev" = "-o" ]; then
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OUTPUT="$arg"
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fi
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prev="$arg"
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done
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# Invoke mold via the cc driver, forward all original arguments
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cc -fuse-ld=mold "$@"
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# Only strip sections from fully static binaries.
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# Dynamic executables (i.e. build scripts, proc-macros) need .dynstr at runtime.
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if [ "$IS_STATIC" = 1 ] && [ -n "$OUTPUT" ] && [ -f "$OUTPUT" ]; then
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objcopy \
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--remove-section=.eh_frame \
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--remove-section=.eh_frame_hdr \
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--remove-section=.dynstr \
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--remove-section=.comment \
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"$OUTPUT"
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fi
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