libopencl-clang.so cannot be linked on Fedora 32 and rawhide

[JacekDanecki]

Starting with (clang-10.0.0-0.2.rc1.fc32](https://koji.fedoraproject.org/koji/buildinfo?buildID=1458974) libopencl-clang.so cannot be linked because of missing libraries. The same issue with newer clang package reproduced in copr build.
More details about clang in Fedora 32: https://lists.fedoraproject.org/archives/list/devel-announce@lists.fedoraproject.org/thread/7YQGZ2RQUNJCD7QA37AVVJQF4F4QCPXL/

[ 94%] Linking CXX shared library libopencl-clang.so
/usr/bin/cmake -E cmake_link_script CMakeFiles/opencl-clang.dir/link.txt --verbose=1
/usr/bin/c++ -fPIC -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -DNDEBUG  -Wl,-rpath-link,  -Wl,-O3 -Wl,--no-undefined -Wl,-Bsymbolic -Wl,--version-script=/root/rpmbuild/BUILD/opencl-clang-0a5a9f67b56431ef7b9436d1af812df6dfb44975/common_clang.map -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -shared -Wl,-soname,libopencl-clang.so.10 -o libopencl-clang.so.10 CMakeFiles/opencl-clang.dir/common_clang.cpp.o CMakeFiles/opencl-clang.dir/options.cpp.o CMakeFiles/opencl-clang.dir/pch_mgr.cpp.o CMakeFiles/opencl-clang.dir/options_compile.cpp.o cl_headers/CMakeFiles/cl_headers.dir/opencl-c.h.cpp.o cl_headers/CMakeFiles/cl_headers.dir/opencl-c-base.h.cpp.o   -L/usr/lib64/lib64  -Wl,-rpath,"\$ORIGIN/../lib64" -lclangBasic -lclangCodeGen -lclangDriver -lclangFrontend -lclangFrontendTool -lclangCodeGen -lclangRewriteFrontend -lclangARCMigrate -lclangStaticAnalyzerFrontend -lclangStaticAnalyzerCheckers -lclangStaticAnalyzerCore -lclangCrossTU -lclangIndex -lclangFrontend -lclangDriver -lclangParse -lclangSerialization -lclangSema -lclangAnalysis -lclangEdit -lclangFormat -lclangToolingInclusions -lclangToolingCore -lclangRewrite -lclangASTMatchers -lclangAST -lclangLex -lclangBasic -ldl -lLLVMSPIRVLib /usr/lib64/libLLVM-10.so -lclangCodeGen -lclangDriver -lclangFrontend -lclangFrontendTool -lclangRewriteFrontend -lclangARCMigrate -lclangStaticAnalyzerFrontend -lclangStaticAnalyzerCheckers -lclangStaticAnalyzerCore -lclangCrossTU -lclangIndex -lclangParse -lclangSerialization -lclangSema -lclangAnalysis -lclangEdit -lclangFormat -lclangToolingInclusions -lclangToolingCore -lclangRewrite -lclangASTMatchers -lclangAST -lclangLex -ldl -lLLVMSPIRVLib 
/usr/bin/ld: cannot find -lclangBasic
/usr/bin/ld: cannot find -lclangCodeGen
/usr/bin/ld: cannot find -lclangDriver
/usr/bin/ld: cannot find -lclangFrontend
/usr/bin/ld: cannot find -lclangFrontendTool
/usr/bin/ld: cannot find -lclangCodeGen
/usr/bin/ld: cannot find -lclangRewriteFrontend
/usr/bin/ld: cannot find -lclangARCMigrate
/usr/bin/ld: cannot find -lclangStaticAnalyzerFrontend
/usr/bin/ld: cannot find -lclangStaticAnalyzerCheckers
/usr/bin/ld: cannot find -lclangStaticAnalyzerCore
/usr/bin/ld: cannot find -lclangCrossTU
/usr/bin/ld: cannot find -lclangIndex
/usr/bin/ld: cannot find -lclangFrontend
/usr/bin/ld: cannot find -lclangDriver
/usr/bin/ld: cannot find -lclangParse
/usr/bin/ld: cannot find -lclangSerialization
/usr/bin/ld: cannot find -lclangSema
/usr/bin/ld: cannot find -lclangAnalysis
/usr/bin/ld: cannot find -lclangEdit
/usr/bin/ld: cannot find -lclangFormat
/usr/bin/ld: cannot find -lclangToolingInclusions
/usr/bin/ld: cannot find -lclangToolingCore
/usr/bin/ld: cannot find -lclangRewrite
/usr/bin/ld: cannot find -lclangASTMatchers
/usr/bin/ld: cannot find -lclangAST
/usr/bin/ld: cannot find -lclangLex
/usr/bin/ld: cannot find -lclangBasic
/usr/bin/ld: cannot find -lclangCodeGen
/usr/bin/ld: cannot find -lclangDriver
/usr/bin/ld: cannot find -lclangFrontend
/usr/bin/ld: cannot find -lclangFrontendTool
/usr/bin/ld: cannot find -lclangRewriteFrontend
/usr/bin/ld: cannot find -lclangARCMigrate
/usr/bin/ld: cannot find -lclangStaticAnalyzerFrontend
/usr/bin/ld: cannot find -lclangStaticAnalyzerCheckers
/usr/bin/ld: cannot find -lclangStaticAnalyzerCore
/usr/bin/ld: cannot find -lclangCrossTU
/usr/bin/ld: cannot find -lclangIndex
/usr/bin/ld: cannot find -lclangParse
/usr/bin/ld: cannot find -lclangSerialization
/usr/bin/ld: cannot find -lclangSema
/usr/bin/ld: cannot find -lclangAnalysis
/usr/bin/ld: cannot find -lclangEdit
/usr/bin/ld: cannot find -lclangFormat
/usr/bin/ld: cannot find -lclangToolingInclusions
/usr/bin/ld: cannot find -lclangToolingCore
/usr/bin/ld: cannot find -lclangRewrite
/usr/bin/ld: cannot find -lclangASTMatchers
/usr/bin/ld: cannot find -lclangAST
/usr/bin/ld: cannot find -lclangLex
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/opencl-clang.dir/build.make:175: libopencl-clang.so.10] Error 1
make[2]: Leaving directory '/root/rpmbuild/BUILD/opencl-clang-0a5a9f67b56431ef7b9436d1af812df6dfb44975/build'
make[1]: *** [CMakeFiles/Makefile2:235: CMakeFiles/opencl-clang.dir/all] Error 2
make: *** [Makefile:133: all] Error 2
error: Bad exit status from /var/tmp/rpm-tmp.iV4OfP (%build)


RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.iV4OfP (%build)

Libraries in clang-libs package:

$ rpm -ql clang-libs | grep so.10
/usr/lib64/libclang-cpp.so.10
/usr/lib64/libclang.so.10

[JacekDanecki]

When I replace list of clang libraries with clang-cpp library libopencl-clang.so.10 can be linked correctly

[ 70%] Linking CXX shared library libopencl-clang.so
/usr/bin/cmake -E cmake_link_script CMakeFiles/opencl-clang.dir/link.txt --verbose=1
/usr/bin/c++ -fPIC -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -DNDEBUG  -Wl,-rpath-link,  -Wl,-O3 -Wl,--no-undefined -Wl,-Bsymbolic -Wl,--version-script=/root/rpmbuild/BUILD/opencl-clang-0a5a9f67b56431ef7b9436d1af812df6dfb44975/common_clang.map -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -shared -Wl,-soname,libopencl-clang.so.10 -o libopencl-clang.so.10 CMakeFiles/opencl-clang.dir/common_clang.cpp.o CMakeFiles/opencl-clang.dir/options.cpp.o CMakeFiles/opencl-clang.dir/pch_mgr.cpp.o CMakeFiles/opencl-clang.dir/options_compile.cpp.o cl_headers/CMakeFiles/cl_headers.dir/opencl-c.h.cpp.o cl_headers/CMakeFiles/cl_headers.dir/opencl-c-base.h.cpp.o   -L/usr/lib64/lib64  -Wl,-rpath,"\$ORIGIN/../lib64" -lclang-cpp -ldl -lLLVMSPIRVLib /usr/lib64/libLLVM-10.so 
/usr/bin/cmake -E cmake_symlink_library libopencl-clang.so.10 libopencl-clang.so.10 libopencl-clang.so
make[2]: Leaving directory '/root/rpmbuild/BUILD/opencl-clang-0a5a9f67b56431ef7b9436d1af812df6dfb44975/build'
[100%] Built target opencl-clang

Output from ldd

$ ldd ./libopencl-clang.so.10
        linux-vdso.so.1 (0x00007ffd08b9d000)
        libclang-cpp.so.10 => /lib64/libclang-cpp.so.10 (0x00007fbffcf20000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007fbffcf19000)
        libLLVMSPIRVLib.so.10 => /lib64/libLLVMSPIRVLib.so.10 (0x00007fbffcbc2000)
        libLLVM-10.so => /lib64/libLLVM-10.so (0x00007fbff7e54000)
        libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007fbff7c64000)
        libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fbff7c49000)
        libc.so.6 => /lib64/libc.so.6 (0x00007fbff7a7d000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fbff7a5b000)
        /lib64/ld-linux-x86-64.so.2 (0x00007fbfffe2f000)
        libffi.so.6 => /lib64/libffi.so.6 (0x00007fbff7a50000)
        libedit.so.0 => /lib64/libedit.so.0 (0x00007fbff7a13000)
        libz.so.1 => /lib64/libz.so.1 (0x00007fbff79f9000)
        libtinfo.so.6 => /lib64/libtinfo.so.6 (0x00007fbff79ca000)
        libm.so.6 => /lib64/libm.so.6 (0x00007fbff7883000)