Use gcc binutils for rc compiler on MSYS2 CLANG64.

Update installdeps and cmake to use windres from gcc binutils from
MINGW64 on MSYS2 CLANG64, because llvm-rc doesn't work sometimes.

Signed-off-by: Rafael Kitover <rkitover@gmail.com>

installdeps

@@ -1111,6 +1111,13 @@ windows_installdeps() {
         set -- "$@" "${target}-${p}"
     done
 
+    case "$target" in
+        *clang*)
+            # We use gcc windres for now, llvm-rc is sometimes broken.
+            set -- "$@" mingw-w64-x86_64-binutils
+        ;;
+    esac
+
     # install
     check pacman --noconfirm --needed -S git make zip "$@"
 

src/wx/CMakeLists.txt

@@ -855,6 +855,17 @@ if(WIN32)
     list(APPEND VBAM_LIBS dxguid dsound wsock32 ws2_32 imm32 version)
 endif()
 
+# On MSYS2 CLANG64, use MinGW64 windres, when available,  instead of
+# llvm-rc, which sometimes does not work.
+if(MSYS AND CMAKE_CXX_COMPILER_ID STREQUAL Clang)
+    cygpath(gcc_binutils_windres /mingw64/bin/windres)
+
+    if(EXISTS "${gcc_binutils_windres}")
+        set(CMAKE_RC_COMPILER "${gcc_binutils_windres}")
+        set(CMAKE_RC_COMPILER "${gcc_binutils_windres}" CACHE STRING "Windows REsource File Compiler" FORCE)
+    endif()
+endif()
+
 link_directories(${CMAKE_BINARY_DIR})
 
 set(VBAM_ICON visualboyadvance-m.icns)