fixed link issue against new clang

doxygen-1.8.18-clang.patch

@@ -0,0 +1,13 @@
+diff -up doxygen-1.8.18/CMakeLists.txt.old doxygen-1.8.18/CMakeLists.txt
+diff -up doxygen-1.8.18/src/CMakeLists.txt.old doxygen-1.8.18/src/CMakeLists.txt
+--- doxygen-1.8.18/src/CMakeLists.txt.old	2020-07-08 13:37:31.646148957 +0200
++++ doxygen-1.8.18/src/CMakeLists.txt	2020-07-08 13:45:53.470517795 +0200
+@@ -308,7 +308,7 @@ if (use_libclang)
+     add_definitions(${LLVM_DEFINITIONS})
+     llvm_map_components_to_libnames(llvm_libs support core option)
+     target_compile_definitions(doxygen PRIVATE ${LLVM_DEFINITIONS})
+-    set(CLANG_LIBS libclang clangTooling ${llvm_libs})
++    set(CLANG_LIBS libclang clang-cpp -lLLVM-10)
+ endif()
+ 
+ target_link_libraries(doxygen

doxygen.spec

@@ -11,7 +11,7 @@ Summary: A documentation system for C/C++
 Name:    doxygen
 Epoch:   1
 Version: 1.8.18
-Release: 3%{?dist}
+Release: 4%{?dist}
 
 # No version is specified.
 License: GPL+
@@ -19,11 +19,13 @@ Url: http://www.doxygen.nl
 Source0: http://doxygen.nl/files/%{name}-%{version}.src.tar.gz
 # this icon is part of kdesdk
 Source1: doxywizard.desktop
-
+%if 0%{?fedora} >= 32
+Patch0: doxygen-1.8.18-clang.patch
+%endif
 # upstream patches
-Patch0: doxygen-1.8.17-buffer-overflow.patch
-Patch1: doxygen-1.8.18-memory-leaks.patch
-Patch3: doxygen-1.8.18-md5-hash-does-not-match-for-two-different-runs.patch
+Patch100: doxygen-1.8.17-buffer-overflow.patch
+Patch101: doxygen-1.8.18-memory-leaks.patch
+Patch103: doxygen-1.8.18-md5-hash-does-not-match-for-two-different-runs.patch
 
 BuildRequires: %{_bindir}/python3
 BuildRequires: ImageMagick
@@ -105,6 +107,7 @@ BuildRequires: zlib-devel
 %endif
 %if "x%{?clang_support}" == "xON"
 BuildRequires: llvm-devel
+BuildRequires: clang-devel
 %endif
 Requires: perl-interpreter
 Requires: graphviz
@@ -305,6 +308,9 @@ make tests -C %{BuildDir}
 %endif
 
 %changelog
+* Wed Jul 08 2020 Than Ngo <than@redhat.com> - 1.8.18-4
+- fixed link issue against new clang
+
 * Thu Jun 18 2020 Than Ngo <than@redhat.com> - 1.8.18-3
 - fixed bz#1834591, enable clang support in fedora