Providing -DOpenCL_LIBRARY=path/to/libOpenCL.so results in a compilation error

[pvelesko]

[ 65%] Linking CXX shared library libCHIP.so
/usr/bin/cmake -E cmake_link_script CMakeFiles/CHIP.dir/link.txt --verbose=1
/space/pvelesko/install/llvm/17.0/bin/clang++ -fPIC  -Wno-duplicate-decl-specifier -Wno-tautological-constant-compare  -Wno-c++20-extensions -Wno-unused-result -Wno-delete-abstract-non-virtual-dtor -Wno-deprecated-declarations -Wunused-command-line-argument -O3 -DNDEBUG -Wl,-rpath, -shared -Wl,-soname,libCHIP.so -o libCHIP.so CMakeFiles/CHIP.dir/src/spirv.cc.o CMakeFiles/CHIP.dir/src/spirv_hiprtc.cc.o CMakeFiles/CHIP.dir/src/CHIPDriver.cc.o CMakeFiles/CHIP.dir/src/CHIPBackend.cc.o CMakeFiles/CHIP.dir/src/SPVRegister.cc.o CMakeFiles/CHIP.dir/src/CHIPGraph.cc.o CMakeFiles/CHIP.dir/src/CHIPBindings.cc.o CMakeFiles/CHIP.dir/src/logging.cc.o CMakeFiles/CHIP.dir/src/Utils.cc.o CMakeFiles/CHIP.dir/src/SPIRVFuncInfo.cc.o CMakeFiles/CHIP.dir/src/backend/OpenCL/CHIPBackendOpenCL.cc.o CMakeFiles/CHIP.dir/src/backend/OpenCL/SVMemoryRegion.cc.o bitcode/CMakeFiles/rtdevlib.dir/atomicAddFloat_native.cc.o bitcode/CMakeFiles/rtdevlib.dir/atomicAddFloat_emulation.cc.o bitcode/CMakeFiles/rtdevlib.dir/atomicAddDouble_native.cc.o bitcode/CMakeFiles/rtdevlib.dir/atomicAddDouble_emulation.cc.o bitcode/CMakeFiles/rtdevlib.dir/ballot_native.cc.o  /lib/x86_64-linux-gnu/libOpenCL.so.1 -lOpenCL
/usr/bin/ld: input file 'libCHIP.so' is the same as output file
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

[pvelesko]

-Wl,-soname,libCHIP.so -o libCHIP.so

[pvelesko]

Also, .so.0.0 etc are not accepted

[linehill]

rpath option looks broken: ... -Wl,-rpath, .... It is missing a path. Would it compile if it were removed?

[pvelesko]

leads to other errors down the path

[linehill]

I get compile error too with -DOpenCL_LIBRARY:

[ 63%] Linking CXX shared library libCHIP.so
/home/linehill/.local/lib/python3.10/site-packages/cmake/data/bin/cmake -E cmake_link_script CMakeFiles/CHIP.dir/link.txt --verbose=1
/mnt/md1/linehill/ws-chipstar-2/install/bin/clang++ -fPIC  -Wno-duplicate-decl-specifier -Wno-tautological-constant-compare  -Wno-c++20-extensions -Wno-unused-result -Wno-delete-abstract-non-virtual-dtor -Wno-deprecated-declarations -Wunused-command-line-argument -g -Wl,-rpath, -Wl,-rpath,/usr/lib/x86_64-linux-gnu -shared -Wl,-soname,libCHIP.so -o libCHIP.so CMakeFiles/CHIP.dir/src/spirv.cc.o CMakeFiles/CHIP.dir/src/spirv_hiprtc.cc.o CMakeFiles/CHIP.dir/src/CHIPDriver.cc.o CMakeFiles/CHIP.dir/src/CHIPBackend.cc.o CMakeFiles/CHIP.dir/src/SPVRegister.cc.o CMakeFiles/CHIP.dir/src/CHIPGraph.cc.o CMakeFiles/CHIP.dir/src/CHIPBindings.cc.o CMakeFiles/CHIP.dir/src/logging.cc.o CMakeFiles/CHIP.dir/src/Utils.cc.o CMakeFiles/CHIP.dir/src/SPIRVFuncInfo.cc.o CMakeFiles/CHIP.dir/src/backend/OpenCL/CHIPBackendOpenCL.cc.o CMakeFiles/CHIP.dir/src/backend/OpenCL/SVMemoryRegion.cc.o CMakeFiles/CHIP.dir/src/backend/Level0/CHIPBackendLevel0.cc.o bitcode/CMakeFiles/rtdevlib.dir/atomicAddFloat_native.cc.o bitcode/CMakeFiles/rtdevlib.dir/atomicAddFloat_emulation.cc.o bitcode/CMakeFiles/rtdevlib.dir/atomicAddDouble_native.cc.o bitcode/CMakeFiles/rtdevlib.dir/atomicAddDouble_emulation.cc.o bitcode/CMakeFiles/rtdevlib.dir/ballot_native.cc.o  /usr/lib/x86_64-linux-gnu/libze_loader.so /usr/lib/x86_64-linux-gnu/libOpenCL.so -lOpenCL -lze_loader 
/usr/bin/ld: cannot find /usr/lib/x86_64-linux-gnu: file format not recognized
clang-16: error: linker command failed with exit code 1 (use -v to see invocation)

But with different error message.

The chipStar builds successfully (from scratch) on my machine with the following change:

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ff392f95..b4556104 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -68,12 +68,13 @@ endforeach()
 if(NOT DEFINED OpenCL_LIBRARY)
   message(STATUS "OpenCL_LIBRARY was not set. Searching for libOpenCL.so in LD_LIBRARY_PATH")
   find_library(OpenCL_LIBRARY NAMES OpenCL PATHS ENV LD_LIBRARY_PATH ./ NO_CACHE)
-  if(OpenCL_LIBRARY)
-    get_filename_component(OpenCL_DIR ${OpenCL_LIBRARY} DIRECTORY CACHE)
-    message(STATUS "Setting OpenCL_DIR to ${OpenCL_DIR}")
-  else()
-    message(STATUS "OpenCL not found")
-  endif()
+endif()
+
+if(OpenCL_LIBRARY)
+  get_filename_component(OpenCL_DIR ${OpenCL_LIBRARY} DIRECTORY CACHE)
+  message(STATUS "Setting OpenCL_DIR to ${OpenCL_DIR}")
+else()
+  message(STATUS "OpenCL not found")
 endif()

 if(NOT DEFINED LevelZero_LIBRARY)

This patch solves the broken -Wl,-rpath option with the missing path value.

[pjaaskel]

@pvelesko can you confirm it fixes it? Can we create a PR of this and merge it in main?

[pvelesko]

checking now On Thu, Dec 21, 2023 at 14:41 Pekka Jääskeläinen @.***> wrote:

@pvelesko https://github.com/pvelesko can you confirm it fixes it? Can we create a PR of this and merge it in main?

— Reply to this email directly, view it on GitHub https://github.com/CHIP-SPV/chipStar/issues/734#issuecomment-1866180904, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACCJBQM7V32W3OVYT7SAJETYKQU7ZAVCNFSM6AAAAABA55MSXWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQNRWGE4DAOJQGQ . You are receiving this because you were mentioned.Message ID: @.***>