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128 lines
5.9 KiB
Plaintext
128 lines
5.9 KiB
Plaintext
mold
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________________________________________________________________________________
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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. [0]
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Upstream: $/rui314/mold
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[000] Index
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________________________________________________________________________________
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* Installation ........................................................... [001]
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* Setup .................................................................. [002]
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* METHOD 1 (Compiler-agnostic) ......................................... [003]
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* METHOD 2 (Clang >= 12.0) ............................................. [004]
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* METHOD 3 (GCC) ....................................................... [005]
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* Usage .................................................................. [006]
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* Troubleshooting ........................................................ [007]
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* Package Fails To Link With Mold ...................................... [008]
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* References ............................................................. [009]
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[001] Installation
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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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--[003] METHOD 1 (Compiler-agnostic) -------------------------------------------
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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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--[004] METHOD 2 (Clang >= 12.0) -----------------------------------------------
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Add --ld-path to CFLAGS/CXXFLAGS.
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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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In addition to --ld-path, the following may also be needed. Please NOTE the
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implications of this warning suppression and why METHOD 1 may be the best
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solution to this problem.
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+----------------------------------------------------------------------------+
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| $ export CFLAGS="$CFLAGS -Wno-unused-command-line-argument" |
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| $ export CXXFLAGS="$CXXFLAGS -Wno-unused-command-line-argument" |
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+----------------------------------------------------------------------------+
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--[005] METHOD 3 (GCC) ---------------------------------------------------------
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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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[006] Usage
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________________________________________________________________________________
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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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| $ readelf -p .comment /path/to/exe |
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+------------------------------------------------------------------------------+
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If 'mold' appears in the output, everything is setup correctly.
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[007] Troubleshooting
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________________________________________________________________________________
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--[008] 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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[009] References
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________________________________________________________________________________
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[0] $/rui314/mold
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