issue doxygen#11833 Allow minimum required macOS version using MACOS_VERSION_MIN

Example:

   cmake -DMACOS_VERSION_MIN=15.0 /path/to/doxygen

Author: doxygen

CMakeLists.txt

@@ -72,6 +72,7 @@ endif()
 
 set(clang    "0" CACHE INTERNAL "used in settings.h")
 
+if (NOT DEFINED MACOS_VERSION_MIN) # to allow overruling with -DMACOS_VERSION_MIN
 set(MACOS_VERSION_MIN 10.14)
 if(use_libclang)
   set(clang    "1" CACHE INTERNAL "used in settings.h")
@@ -88,10 +89,11 @@ if(use_sys_sqlite3)
   find_package(SQLite3 REQUIRED)
 endif()
 if(build_search AND CMAKE_SYSTEM MATCHES "Darwin")
-  set(MACOS_VERSION_MIN 10.15)
+  set(MACOS_VERSION_MIN 10.15) # needs std::filesystem
 endif()
 if(build_wizard AND CMAKE_SYSTEM MATCHES "Darwin")
-  set(MACOS_VERSION_MIN 11.0)
+  set(MACOS_VERSION_MIN 11.0) # needs Qt
+endif()
 endif()
 
 # use C++17 standard for compiling (unless very new Clang is present)

src/regex.cpp

@@ -657,12 +657,14 @@ bool Ex::Private::matchAt(size_t tokenPos,size_t tokenLen,std::string_view str,M
     {
       char c_tok = tok.asciiValue();
       if (index>=str.length() || str[index]!=c_tok) return false; // end of string, or non matching char
-      index++,tokenPos++;
+      index++;
+      tokenPos++;
     }
     else if (tok.isCharClass())
     {
       if (index>=str.length() || !matchCharClass(tokenPos,str[index])) return false;
-      index++,tokenPos+=tok.value()+1; // skip over character ranges + end token
+      index++;
+      tokenPos+=tok.value()+1; // skip over character ranges + end token
     }
     else
     {