After upgrading from llvm-3.7.1 to llvm-3.7.1-r1 a revdep-rebuild of mesa-11.1.2-r1 was required. This rebuild failed with the following: configure: error: Could not find llvm shared libraries: Please make sure you have built llvm with the --enable-shared option and that your llvm libraries are installed in /usr/lib32 If you have installed your llvm libraries to a different directory you can use the --with-llvm-prefix= configure flag to specify this directory. NOTE: Mesa is attempting to use llvm shared libraries by default. If you do not want to build with llvm shared libraries and instead want to use llvm static libraries then add --disable-llvm-shared-libs to your configure invocation and rebuild. The reason for this is as per https://bugs.gentoo.org/show_bug.cgi?id=578392#c0 which notes (actually for the masked 3.8.0) that 'All component libraries are static again instead of shared'. Indeed there are plenty of *LLVM*.a in /usr/lib{32,64} but no *LLVM.so (well, apart from LLVMHello.so and LLVMgold.so) in contrast with the 3.7.1 build where shared libraries are present in abundance. This seems kind of ironic given that one of the changes claimed by 3.7.1-r1 is: 'backported r252532 that adds better shared linking support' which is not obviously the case. Note that as per my comments in https://bugs.gentoo.org/show_bug.cgi?id=578512#c2 I built 3.7.1-r1 using LLVM_LINK_LLVM_DYLIB rather than BUILD_SHARED_LIBS, cf. https://bugs.gentoo.org/show_bug.cgi?id=578392#c2 and references. So it seems that mesa-11.1.2-r1[llvm] will not build against llvm-3.7.1-r1 and this should be flagged in some way.
(In reply to Adrian.Bassett from comment #0) > So it seems that mesa-11.1.2-r1[llvm] will not build against llvm-3.7.1-r1 > and this should be flagged in some way. Which is not to say that mesa[-llvm] cannot itself be built with llvm-3.7.1-r1, only that the LLVM backend for Gallium3D can't be enabled by USE=llvm. I'm not entirely sure about the implications of this and whether or not overall funcionality is hereby lost.
(In reply to Adrian.Bassett from comment #0) > Note that as per my comments in > https://bugs.gentoo.org/show_bug.cgi?id=578512#c2 I built 3.7.1-r1 using > LLVM_LINK_LLVM_DYLIB rather than BUILD_SHARED_LIBS, cf. > https://bugs.gentoo.org/show_bug.cgi?id=578392#c2 and references. And here's your answer. If you enable all the static libs, you get static libs. Simple as that. The single dylib nonsense may require additional backported patches but it shouldn't be used anyway because it's pure nonsense.
