[cfe-dev] Linking ProfileRT when using -nodefaultlibs

[Eric Fiselier]

Hello,

I'm working on making libc++ generate code coverage data. This means that
libclang_rt.profile.x86_64.a is put into the link command before '-lc' and
other dependencies.
I suspect this change in library order causes the linker errors I see while
running the tests.

I have a couple of questions:
  - Should -ftest-coverage be passed when linking libc++?
  - Is there a way to link libclang_rt.profile.x86_64.a after the given
linker flags


This file shows the ld invocation with and without -nodefaultlibs as well
as the error produced when
linking tests w/ -nodefaultlibs
http://pastebin.com/QWagJpsW

Any help is appreciated

/Eric
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