This reverts commit 185657. It will be used by unit tests.

llvm-svn: 186366

llvm-svn: 185657

llvm-svn: 185655

This renames variable name to reflect initial undefined symbols that are
defined by the linker -u option.

This doesnot change any functionality in lld, and updates code to reflect
Nick's comment.

llvm-svn: 184682

llvm-svn: 184266

llvm-svn: 184055

llvm-svn: 184050

I am about to move PathV2.h to Path.h.

llvm-svn: 183796

llvm-svn: 183724

llvm-svn: 183622

llvm-svn: 183604

llvm-svn: 183603

llvm-svn: 183347

llvm-svn: 183050

llvm-svn: 183034

llvm-svn: 182988

llvm-svn: 182970

llvm-svn: 182912

Users can override the default value of the dynamic linker to be set to the
one that appears in the command line. The path can even be empty!. 

Added a test for the option.

llvm-svn: 182889

The code to actually consume these flags will be added soon.

llvm-svn: 182824

llvm-svn: 182789

llvm-svn: 182786

Add WinLinkDriver and connect it to the existing COFF reader. Remaining
parts are still stubs, so while it can now read a COFF file, it still
cannot link or output PE/COFF files yet.

Reviewers: Bigcheese

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D865

llvm-svn: 182784

llvm-svn: 181655

llvm-svn: 181547

Suggested by Nick Kledzik in reference to r179590.

llvm-svn: 179617

Moved llvm_unreachable out of switch blocks to avoid the "control reaches end of non-void function" warning.

llvm-svn: 179590

to the list of undefined atoms. 

The processing of undefined atoms from dynamic libraries is controlled by
use-shlib-undefines command line option. 

This patch also adds additional command line arguments to allow/disallow
unresolved symbols from shared libraries and mimics GNU ld behavior.

llvm-svn: 179257

llvm-svn: 178798

llvm-svn: 178778

The major changes are:
1) LinkerOptions has been merged into TargetInfo
2) LinkerInvocation has been merged into Driver
3) Drivers no longer convert arguments into an intermediate (core) argument 
   list, but instead create a TargetInfo object and call setter methods on 
   it. This is only how in-process linking would work. That is, you can 
   programmatically set up a TargetInfo object which controls the linking.
4) Lots of tweaks to test suite to work with driver changes
5) Add the DarwinDriver
6) I heavily doxygen commented TargetInfo.h

Things to do after this patch is committed:
a) Consider renaming TargetInfo, given its new roll. 
b) Consider pulling the list of input files out of TargetInfo. This will 
   enable in-process clients to create one TargetInfo the re-use it with 
   different input file lists.
c) Work out a way for Drivers to format the warnings and error done in 
   core linking.

llvm-svn: 178776

llvm-svn: 178268

This actually doesn't change behavior with the current LinkerInvocation, but
it's needed when you make reading parallel.

llvm-svn: 177554

llvm-svn: 177424

llvm-svn: 177079

llvm-svn: 176749

llvm-svn: 175572

This also adds a simple relocation change for dynamic executables to
x86-64 ELF.

llvm-svn: 175208

add merge strings option, this temporarily fixes the problem bringing up helloworld with glibc on x86_64

llvm-svn: 175038

llvm-svn: 174590