Replacing ld with gold - any experience?

cmake use gold linker
ld gold manual
lld linker
gold linker github
gentoo gold linker
export-dynamic
ld command
fedora gold linker

Has anyone tried to use gold instead of ld?

gold promises to be much faster than ld, so it may help speeding up test cycles for large C++ applications, but can it be used as drop-in replacement for ld?

Can gcc/g++ directly call gold.?

Are there any know bugs or problems?

Although gold is part of the GNU binutils since a while, I have found almost no "success stories" or even "Howtos" in the Web.

(Update: added links to gold and blog entry explaining it)


Replacing ld with gold - any experience?, gold promises to be much faster than ld , so it may help speeding up test cycles for large C++ applications, but can it be used as drop-in replacement for ld? Gold is more efficient than gnu-ld, particularly for large C++ applications. There have been reports of 5x improvements for applications with link sizes on the order of 800M. Gold is also useful for GCC's link-time-optimizations and will likely be a required for incremental linking in the future.


As it took me a little while to find out how to selectively use gold (i.e. not system-wide using a symlink), I'll post the solution here. It's based on http://code.google.com/p/chromium/wiki/LinuxFasterBuilds#Linking_using_gold .

  1. Make a directory where you can put a gold glue script. I am using ~/bin/gold/.
  2. Put the following glue script there and name it ~/bin/gold/ld:

    #!/bin/bash
    gold "$@"
    

    Obviously, make it executable, chmod a+x ~/bin/gold/ld.

  3. Change your calls to gcc to gcc -B$HOME/bin/gold which makes gcc look in the given directory for helper programs like ld and thus uses the glue script instead of the system-default ld.

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Can gcc/g++ directly call gold.?

Just to complement the answers: there is a gcc's option -fuse-ld=gold (see gcc doc). Though, AFAIK, it is possible to configure gcc during the build in a way that the option will not have any effect.

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The New Zealand Official Year-book, by ld . for every unit of specific gravity above , and falling by ld . for every unit duty on South Island gold was replaced by a system of rating mining property . Researchers have modeled and developed new classes of materials with contact properties near those of pure gold. With the price of gold currently hovering around $1,340 per ounce, manufacturers


You could link ld to gold (in a local binary directory if you have ld installed to avoid overwriting):

ln -s `which gold` ~/bin/ld

or

ln -s `which gold` /usr/local/bin/ld

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