[llvm-dev] [Openmp-dev] disabling lib/libomptarget.dylib build?

[Jack Howarth via llvm-dev]

On Thu, Mar 16, 2017 at 1:36 PM, Georgios Rokos <grokos at us.ibm.com> wrote:

> Hi Jack,
>
> "*Is there a cmake variable which can be set to suppress the build of
> libomptarget.dylib until this issue is fixed properly?*"
>
> Yes, it is easy to fix. I'll submit a patch.
>
> George
>

Are you planning to retain the building of libomptarget.dylib on darwin by
avoiding the use of the unsupported -version-script linker option?
      Jack
ps Currently I am working around this issue by using the change...

Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt (revision 298112)
+++ CMakeLists.txt (working copy)
@@ -4,6 +4,6 @@ set(OPENMP_LLVM_TOOLS_DIR "" CACHE PATH

 add_subdirectory(runtime)

-if (NOT WIN32)
+if (NOT WIN32 AND NOT APPLE)
   add_subdirectory(libomptarget)
 endif()


> [image: Inactive hide details for Jack Howarth via Openmp-dev
> ---16/03/2017 09:18:41---Currently trunk fails to build openmp on darwin]Jack
> Howarth via Openmp-dev ---16/03/2017 09:18:41---Currently trunk fails to
> build openmp on darwin due to the failure of... [ 46%] Linking CXX shared l
>
> From: Jack Howarth via Openmp-dev <openmp-dev at lists.llvm.org>
> To: "openmp-dev (openmp-dev at lists.llvm.org)" <openmp-dev at lists.llvm.org>,
> llvm-dev <llvm-dev at lists.llvm.org>
> Date: 16/03/2017 09:18
> Subject: [Openmp-dev] disabling lib/libomptarget.dylib build?
> Sent by: "Openmp-dev" <openmp-dev-bounces at lists.llvm.org>
> ------------------------------
>
>
>
> Currently trunk fails to build openmp on darwin due to the failure of...
>
> [ 46%] Linking CXX shared library ../../../lib/libomptarget.dylib
> cd /sw/src/fink.build/llvm50-5.0.0-1/build/stage1/projects/
> openmp/libomptarget
> && /sw/bin/cmake -E cmake_link_script
> CMakeFiles/omptarget.dir/link.txt --verbose=1
> /sw/src/fink.build/llvm50-5.0.0-1/opt-bin/ccclang++ -fno-common -fPIC
> -fvisibility-inlines-hidden -Wall -W -Wno-unused-parameter
> -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic
> -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor
> -Wdelete-non-virtual-dtor -Wstring-conversion -Werror=date-time
> -std=c++11 -O3 -dynamiclib -Wl,-headerpad_max_install_names  -L/sw/lib
> -o ../../../lib/libomptarget.dylib -install_name
> /sw/src/fink.build/llvm50-5.0.0-1/build/stage1/lib/libomptarget.dylib
> CMakeFiles/omptarget.dir/src/omptarget.cpp.o -ldl
> -Wl,--version-script=/sw/src/fink.build/llvm50-5.0.0-1/
> llvm-5.0.0.src/projects/openmp/libomptarget/exports
> ld: unknown option:
> --version-script=/sw/src/fink.build/llvm50-5.0.0-1/llvm-5.0.
> 0.src/projects/openmp/libomptarget/exports
> clang: error: linker command failed with exit code 1 (use -v to see
> invocation)
> make[2]: *** [lib/libomptarget.dylib] Error 1
> make[1]: *** [projects/openmp/libomptarget/CMakeFiles/omptarget.dir/all]
> Error 2
> make: *** [all] Error 2
>
> when the cmake build attempts to use the unsupported -version-script
> linker option on darwin. Is there a cmake variable which can be set to
> suppress the build of libomptarget.dylib until this issue is fixed
> properly?
>         Jack
> ps This issue is filed as http://bugs.llvm.org/show_bug.cgi?id=32309
>
>
> Bug 32309 - ld: unknown option: --version-script= failure in
> lib/libomptarget.dylib on darwin
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>
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