Accepting request 819443 from home:fsirl:doxygen-libclang

- Improve build with libclang support:
  * add doxygen-libclang-cpp.patch to support linking against libclang-cpp
  * add upstream doxygen-64f1f2357ae764f2c8190d067aff801bc0a56721.patch
    to support clang-10

OBS-URL: https://build.opensuse.org/request/show/819443
OBS-URL: https://build.opensuse.org/package/show/devel:tools/doxygen?expand=0&rev=148

doxygen.spec

@@ -41,6 +41,8 @@ Patch7:         PR_7193_fix_blank_file_patterns.patch
 # PATCH-FIX-UPSTREAM Including external tag files with TOC produces a broken index.qhp
 Patch8:         0001-issue-7248-Including-external-tag-files-with-TOC-pro.patch
 Patch9:         reproducible-sort.patch
+Patch10:        doxygen-libclang-cpp.patch
+Patch11:        doxygen-64f1f2357ae764f2c8190d067aff801bc0a56721.patch
 BuildRequires:  bison
 BuildRequires:  cmake >= 2.8.12
 BuildRequires:  flex
@@ -74,6 +76,14 @@ as well.
 %patch7 -p1
 %patch8 -p1
 %patch9 -p1
+%if %{with libclang}
+%if 0%{?suse_version} > 1500 || 0%{?sle_version} >= 150200
+%patch10 -p1
+%endif
+%if 0%{?suse_version} > 1500
+%patch11 -p1
+%endif
+%endif
 
 %build
 %cmake \