fedora 33 x86_64操作系统编译环境
rpmbuild -ba libsigc++20.spec
提示：
doxygen: symbol lookup error: /lib64/libclang-cpp.so.11: undefined symbol: _ZN4llvm15OpenMPIRBuilder20getOrCreateSrcLocStrENS_9StringRefES1_jj, version LLVM_11
确认：
# ldd -r /lib64/libclang-cpp.so.11 |grep 9StringRefES1_jj
undefined symbol: _ZN4llvm15OpenMPIRBuilder20getOrCreateSrcLocStrENS_9StringRefES1_jj, version LLVM_11 (/lib64/libclang-cpp.so.11)
wget https://download-ib01.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/c/clang-libs-11.0.0-1.fc34.x86_64.rpm
下载后发现该库文件同样提示
解决：dnf install -y clang.i686