2021-08-14 23:26:16 -06:00
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Mold
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mold is a multi-threaded, high-performance linker that is several times faster
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than the industry-standard ones, namely, GNU ld, GNU gold or LLVM lld. It is
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developed as a drop-in replacement for these linkers and command-line compatible
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with them with a few exceptions.
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Caveats
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________________________________________________________________________________
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* mold can not yet link the kernel.
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* LTO is not yet supported (so refrain from using it)
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If a package fails to link with mold, open an issue at $/kisslinux/repo and
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(until it is fixed) revert to using your previous linker for said package.
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Usage
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________________________________________________________________________________
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The linker is typically located at /usr/bin/ld and is invoked by the compiler.
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To use mold as the system linker, one of the following methods must be used.
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1. Use the alternatives system to set mold as the system linker.
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+------------------------------------------------------------------------------+
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| $ kiss a mold /usr/bin/ld |
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+------------------------------------------------------------------------------+
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2. Add --ld-path to CFLAGS/CXXFLAGS (Clang > 12.0)
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+------------------------------------------------------------------------------+
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| $ export CFLAGS="$CFLAGS -ld-path=/usr/bin/mold" |
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| $ export CXXFLAGS="$CXXFLAGS -ld-path=/usr/bin/mold" |
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+------------------------------------------------------------------------------+
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3. Add -B to CFLAGS/CXXFLAGS (GCC)
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+------------------------------------------------------------------------------+
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| $ export CFLAGS="$CFLAGS -B/usr/lib/mold" |
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| $ export CXXFLAGS="$CXXFLAGS -B/usr/lib/mold" |
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+------------------------------------------------------------------------------+
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Verification
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________________________________________________________________________________
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To verify that mold is being used, disable binary stripping (KISS_STRIP=0) and
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2021-08-15 10:17:57 -06:00
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run the following command on a newly built executable. If 'mold' appears in the
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2021-08-14 23:26:16 -06:00
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output, everything is setup correctly.
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+------------------------------------------------------------------------------+
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| $ readelf -p .comment /path/to/exe |
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+------------------------------------------------------------------------------+
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Further Reading
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________________________________________________________________________________
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* $/rui314/mold
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