llvm-mirror

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History

Dylan Noblesmith 40dea4f20c drop unneeded config.h includes llvm-svn: 147197		2011-12-22 23:04:07 +00:00
..
CMakeLists.txt	Use absolute path to exportsfile in gold plugin CMake build.	2011-11-05 04:17:20 +00:00
gold-plugin.cpp	drop unneeded config.h includes	2011-12-22 23:04:07 +00:00
gold.exports	Create an exports file, so that the plugin only exports the onload symbol.	2010-04-16 00:43:25 +00:00
Makefile	Point to libLTO with -L/PATH/ -lLTO so that it is found in the install	2011-11-23 03:07:25 +00:00
README.txt	s/libLLVMgold/LLVMgold/g	2010-08-08 21:14:26 +00:00

README.txt

This directory contains a plugin that is designed to work with binutils
gold linker. At present time, this is not the default linker in
binutils, and the default build of gold does not support plugins.

Obtaining binutils:

  cvs -z 9 -d :pserver:anoncvs@sourceware.org:/cvs/src login
  {enter "anoncvs" as the password}
  cvs -z 9 -d :pserver:anoncvs@sourceware.org:/cvs/src co binutils

This will create a src/ directory. Make a build/ directory and from
there configure binutils with "../src/configure --enable-gold --enable-plugins".
Then build binutils with "make all-gold".

To build the LLVMgold plugin, configure LLVM with the option
--with-binutils-include=/path/to/binutils/src/include/ --enable-pic. To use the
plugin, run "ld-new --plugin /path/to/LLVMgold.so".
Without PIC libLTO and LLVMgold are not being built (because they would fail
link on x86-64 with a relocation error: PIC and non-PIC can't be combined).
As an alternative to passing --enable-pic, you can use 'make ENABLE_PIC=1' in
your entire LLVM build.