llvm-mirror

mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-25 04:02:41 +01:00

History

Rafael Espindola ea22615ccd Add an extra-library-path option to the plugin. This is used to support having a library both as bitcode and native code. We want to use the bitcode first, but if codegen produces new undefined references we have to use the native code to satisfy those references. Gold has no notion of bitcode and native search directories, so instead it has an API where the plugin can instruct it to look for the libraries it is passing to it. This patch uses that API. llvm-svn: 106674		2010-06-23 20:20:59 +00:00
..
gold-plugin.cpp	Add an extra-library-path option to the plugin. This is used to support	2010-06-23 20:20:59 +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	Avoid renaming loadable modules at install time. Now the gold plugin is named	2010-05-16 03:13:23 +00:00
README.txt

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/libLLVMgold.so".
Without PIC libLTO and libLLVMgold 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.