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mold: new README
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Dylan Araps
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@ -4,30 +4,44 @@ ________________________________________________________________________________
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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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with them with a few exceptions. [0]
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Upstream: $/rui314/mold
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Caveats
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[000] Index
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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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* Installation-------------------------------------------------------------[001]
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* Setup--------------------------------------------------------------------[002]
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* Usage--------------------------------------------------------------------[003]
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* Troubleshooting----------------------------------------------------------[004]
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* Package-Fails-To-Link-With-Mold----------------------------------------[005]
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* References---------------------------------------------------------------[006]
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Usage
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[001] Installation
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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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+------------------------------------------------------------------------------+
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| |
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| $ kiss b mold |
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+------------------------------------------------------------------------------+
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[002] Setup
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________________________________________________________________________________
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To use mold as the system linker one of the following methods must be used.
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The first solution is recommended as it removes all possibility of the prior
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linker being executed by mistake.
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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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| $ kiss a mold /usr/bin/ld |
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+------------------------------------------------------------------------------+
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@ -35,8 +49,8 @@ To use mold as the system linker, one of the following methods must be used.
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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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| $ 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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@ -44,18 +58,22 @@ To use mold as the system linker, one of the following methods must be used.
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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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| $ 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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[003] Usage
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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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run the following command on a newly built executable. If 'mold' appears in the
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output, everything is setup correctly.
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Mold does not yet support all use cases. It can not be used to link the Linux
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kernel (due to lack of linker script support) and It has no support for LTO
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(Link Time Optimization).
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With mold as the default linker, running the package manager as normal should
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result in its usage. To verify that mold is being used, disable binary stripping
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(KISS_STRIP=0) and run the following command on a newly built executable.
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+------------------------------------------------------------------------------+
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@ -63,8 +81,24 @@ output, everything is setup correctly.
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+------------------------------------------------------------------------------+
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If 'mold' appears in the output, everything is setup correctly.
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Further Reading
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[004] Troubleshooting
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________________________________________________________________________________
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* $/rui314/mold
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--[005]-Package-Fails-To-Link-With-Mold-----------------------------------------
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If a package in the official repositories fails to link with mold, open an
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issue. If a package in a third-party repository fails to link with mold, open
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an issue in their tracker. If a package you maintain fails to link (and the
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issue is in the linker), open an issue upstream.
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[006] References
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________________________________________________________________________________
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[0] $/rui314/mold
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