[Bug 75929] New: Configuring Mesa to use shared libLLVM.so fails

[Bug 75929] New: Configuring Mesa to use shared libLLVM.so fails

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https://bugs.freedesktop.org/show_bug.cgi?id=75929

          Priority: medium
            Bug ID: 75929
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Configuring Mesa to use shared libLLVM.so fails
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: rankincj@googlemail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r600
           Product: Mesa

Created attachment 95379
  --> https://bugs.freedesktop.org/attachment.cgi?id=95379&action=edit
Patch for configure.ac to fix building against libLLVM.so

Configuring Mesa to build on Fedora 20 with the shared libLLVM.so is ignoring
the new --enable-llvm-shared-libs option. It looks like two references to
"with_llvm_shared_libs" were missed in configure.ac.

I have attached a patch.

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[Bug 75929] Configuring Mesa to use shared libLLVM.so fails

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https://bugs.freedesktop.org/show_bug.cgi?id=75929

--- Comment #1 from Emil Velikov <emil.l.velikov@gmail.com> ---
Hi Chris

I have a similar patch [1] which also clears up the remaining messages. It's
queued up and I'm planning to commit it shortly. Thanks for the heads up.

[1] http://lists.freedesktop.org/archives/mesa-dev/2014-March/055316.html

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[Bug 75929] Configuring Mesa to use shared libLLVM.so fails

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https://bugs.freedesktop.org/show_bug.cgi?id=75929

--- Comment #2 from Dave Witbrodt <dawitbro@sbcglobal.net> ---
I've been having lots of trouble building Mesa for RadeonSI with recent LLVM
3.5 snapshots.  I am happy to report that applying Emil's patch from comment 1,
in combination with attachment 95368 (from bug 75919), gets everything working
for me again.  (Without 95368, I get static linkage to LLVM instead of shared,
which is comical since my build errors out unless I use the
"--enable-llvm-shared-libs" config option.)

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[Bug 75929] Configuring Mesa to use shared libLLVM.so fails

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https://bugs.freedesktop.org/show_bug.cgi?id=75929

Emil Velikov <emil.l.velikov@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Emil Velikov <emil.l.velikov@gmail.com> ---
Just committed the patch to master, so one should be able to enable/disable the
option on demand.

AFAICS one could do some clean-up wrt LLVM handling in configure.ac although
I'd rather leave that to someone more experienced in that area.

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[Bug 75929] Configuring Mesa to use shared libLLVM.so fails

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https://bugs.freedesktop.org/show_bug.cgi?id=75929

--- Comment #4 from Dave Witbrodt <dawitbro@sbcglobal.net> ---
Emil's patch (now applied in Mesa 9.2.0-devel), along with an LLVM 3.5 build
with the proper symlinks (bug 75919), nearly allows me to build Mesa for
RadeonSI.  In my scrambling about to get the build working again, I forgot that
I also had to apply a patch from bug 70410 to get the build working.

Anyway, glad to see this bug closed.

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