Add MSYS2 CLANG64/32 support.

Update installdeps to support CLANG64/CLANG32 MSYS2 targets.

cmake:

Set POLICY CMP0060 to NEW to not convert full lib paths, this is the
default.
Stop disabling ffmpeg on WIN32+i686.
On MSYS2+clang add windows import libs to CMAKE_PREFIX_PATH.
For static builds on MSYS2 append full paths for static libs for tiff,
jbig and lzma to FFMPEG_LIBRARIES.
Add -Wno-unused-command-line-argument to all CFLAGS/CXXFLAGS so that
clang does not warn about gcc-specific options.
Enable -march/-mtune optimizations by default instead of only for
UPSTREAM_RELEASE.
Update find_wx_util() to search suffixes for WIN32 and add the "static"
suffix for static builds.
Remove all linker flags from wxWidgets_LIBRARIES and translate all wx*
libs as well as jpeg, tiff, jbig lzma and expat to full .a paths for
static builds.
Disable strutil tests on MSYS2+clang, currently does not build.

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

CMakeLists.txt

@@ -25,6 +25,10 @@ if(COMMAND cmake_policy)
     if(POLICY CMP0012)
         cmake_policy(SET CMP0012 NEW) # Saner if() behavior.
     endif()
+
+    if(POLICY CMP0060)
+        cmake_policy(SET CMP0060 NEW) # Full lib paths.
+    endif()
 endif()
 
 set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
@@ -184,7 +188,7 @@ macro(check_ffmpeg_component_versions)
     endif()
 endmacro()
 
-if(((NOT DEFINED ENABLE_FFMPEG) AND (NOT (WIN32 AND X86))) OR ENABLE_FFMPEG)
+if(NOT DEFINED ENABLE_FFMPEG OR ENABLE_FFMPEG)
     set(FFMPEG_DEFAULT ON)
 
     find_package(FFmpeg COMPONENTS ${FFMPEG_COMPONENTS})
@@ -337,6 +341,20 @@ if(WIN32 AND CMAKE_GENERATOR STREQUAL Ninja AND NOT "$ENV{MSYSTEM_PREFIX}" STREQ
     set(MSYS ON)
 endif()
 
+include(VbamFunctions)
+
+if(MSYS AND CMAKE_CXX_COMPILER_ID STREQUAL Clang)
+    if($ENV{MSYSTEM} STREQUAL CLANG64)
+        cygpath(prefix "$ENV{MSYSTEM_PREFIX}/x86_64-w64-mingw32")
+        list(APPEND CMAKE_PREFIX_PATH "${prefix}")
+    elseif($ENV{MSYSTEM} STREQUAL CLANG32)
+        cygpath(prefix "$ENV{MSYSTEM_PREFIX}/i686-w64-mingw32")
+        list(APPEND CMAKE_PREFIX_PATH "${prefix}")
+    endif()
+
+    set(CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH}" CACHE INTERNAL "prefix search path for find_XXXX" FORCE)
+endif()
+
 # Add support for Homebrew, MacPorts and Fink on OS X
 if(APPLE)
     include(MacPackageManagers)
@@ -402,6 +420,16 @@ if(ENABLE_FFMPEG)
 
     if(APPLE)
         set(FFMPEG_LDFLAGS ${FFMPEG_LDFLAGS} -framework CoreText -framework ApplicationServices)
+    elseif(WIN32)
+        list(APPEND FFMPEG_LIBRARIES secur32 bcrypt ${WIN32_MEDIA_FOUNDATION_LIBS})
+
+        if(MSYS AND VBAM_STATIC)
+            foreach(lib tiff jbig lzma)
+                cygpath(lib "$ENV{MSYSTEM_PREFIX}/lib/lib${lib}.a")
+
+                list(APPEND FFMPEG_LIBRARIES "${lib}")
+            endforeach()
+        endif()
     endif()
 else()
     add_definitions(-DNO_FFMPEG)
@@ -566,10 +594,8 @@ if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID STREQUAL Clang)
     endif()
 
     # Common flags.
-    set(MY_C_FLAGS -pipe -Wformat -Wformat-security -feliminate-unused-debug-types)
+    set(MY_C_FLAGS -pipe -Wno-unused-command-line-argument -Wformat -Wformat-security -feliminate-unused-debug-types)
 
-    # Enable some optimizations for our upstream binary builds.
-    if(UPSTREAM_RELEASE)
     # Optimize for Core2 and tune for Rocketlake on macOS and Zen3 for the rest
     # on X86_64.
     if(X86_64)
@@ -583,7 +609,6 @@ if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID STREQUAL Clang)
     elseif(X86_32)
         set(MY_C_FLAGS ${MY_C_FLAGS} -march=pentium-mmx -mtune=core2)
     endif()
-    endif()
 
     # common debug flags
     if(CMAKE_COMPILER_IS_GNUCXX)

cmake/VbamFunctions.cmake

@@ -68,7 +68,7 @@ function(check_clean_exit var)
 endfunction()
 
 function(find_wx_util var util)
-    if(WIN32 OR EXISTS /etc/gentoo-release)
+    if(EXISTS /etc/gentoo-release)
         # On win32, including cross builds we prefer the plain utility name
         # first from PATH.
         #
@@ -78,6 +78,12 @@ function(find_wx_util var util)
         # This makes a one element of empty string list.
         set(conf_suffixes  ";")
         set(major_versions ";")
+    elseif(WIN32)
+        set(major_versions ";")
+    endif()
+
+    if(VBAM_STATIC)
+        list(APPEND conf_suffixes static)
     endif()
 
     list(APPEND conf_suffixes  gtk4u gtk4 gtk3u gtk3 gtk2u gtk2 "")

installdeps

@@ -81,23 +81,16 @@ quit() {
 usage() {
     cat <<'EOF'
 Usage: ./installdeps [TARGET]
-Try to install the dependencies needed for this project appropriately on the
+
-host OS.
+Try to install the dependencies needed for this project appropriately on the host OS.
 
 This program may require sudo.
 
-A cross-compile target may be specified as the only parameter, of either
+A cross-compile target may be specified as the only parameter, of either m32 which targets the host in 32 bit mode (e.g. x86 on an amd64 host) or win32, MinGW-w64-i686 or MinGW-w64-x86_64.  win32 is an alias for MinGW-w64-i686 to target Windows via MinGW.  Cross compiling for Windows is only supported on Debian/Ubuntu, Fedora, Arch Linux and MSYS2.
-m32 which targets the host in 32 bit mode (e.g. x86 on an amd64
-host) or win32, MinGW-w64-i686 or
-MinGW-w64-x86_64.  win32 is an alias for
-MinGW-w64-i686 to target Windows via MinGW.  Cross compiling for
-Windows is only supported on Debian/Ubuntu, Fedora, Arch Linux and MSYS2.
 
-On MSYS2 dependencies are installed for 32 or 64 bit native Windows targets
+On MSYS2 the MinGW-w64-clang-x86_64 target for CLANG64 and the MinGW-w64-clang-i686 target for CLANG32 are also supported.
-based on which shell you started (the value of $MSYSTEM) unless you specify one
+
-or the other. You can specify a cross target of m32 or
+On MSYS2 dependencies are installed for 32 or 64 bit native Windows targets based on which shell you started (the value of $MSYSTEM) unless you specify one or the other. You can specify a cross target of m32 or m64 as aliases for the 32 bit or 64 bit MinGW gcc targets respectively. MSYS2 POSIX layer builds are not supported.
-m64 as aliases for the 32 bit or 64 bit targets respectively.
-MSYS2 POSIX layer builds are not supported.
 
   -h, --help, --usage                Show this help screen and exit.
   --no-openal                        Do not install OpenAL dependencies.
@@ -254,6 +247,12 @@ check_cross() {
                 MINGW64)
                     target='mingw-w64-x86_64'
                     ;;
+                CLANG32)
+                    target='mingw-w64-clang-i686'
+                    ;;
+                CLANG64)
+                    target='mingw-w64-clang-x86_64'
+                    ;;
                 MSYS)
                     error 'host builds in MSYS mode are not supported, supply a target or start a MINGW shell'
                     ;;
@@ -279,12 +278,10 @@ check_cross() {
                 win64)
                     target='mingw-w64-x86_64'
                     ;;
-                mingw-w64-i686)
+                mingw-w64-x86_64|mingw-w64-i686|mingw-w64-clang-x86_64|mingw-w64-clang-i686)
-                    ;;
-                mingw-w64-x86_64)
                     ;;
                 *)
-                    error "target must be one of 'm32', 'win32', 'MinGW-w64-i686', 'win64' or 'MinGW-w64-x86_64'"
+                    error "target must be one of 'm32', 'win32', 'win64', or one of the MinGW/clang targets supported by MSYS2: mingw-w64-[clang-](x86_64|i686)."
                     ;;
             esac
             ;;
@@ -1087,7 +1084,24 @@ windows_installdeps() {
     # update catalogs
     check pacman -Sy
 
-    pkgs="SDL2 sfml wxWidgets zlib binutils cmake crt-git extra-cmake-modules gcc gcc-libs gcc-libgfortran gdb headers-git make pkg-config tools-git windows-default-manifest libmangle-git nasm ninja"
+    pkgs=
+
+    case "$target" in
+        *clang*)
+            pkgs="lldb"
+            ;;
+        *)
+            pkgs="$pkgs gcc gcc-libs gcc-libgfortran"
+            ;;
+    esac
+
+    case "$target" in
+        *i686*)
+            pkgs="$pkgs nasm"
+            ;;
+    esac
+
+    pkgs="$pkgs SDL2 sfml wxWidgets zlib binutils cmake crt-git extra-cmake-modules headers-git make pkgconf tools-git windows-default-manifest libmangle-git ninja gdb"
 
     [ -n "$ENABLE_OPENAL" ] && pkgs="$pkgs openal"
     [ -n "$ENABLE_FFMPEG" ] && pkgs="$pkgs ffmpeg"

src/wx/CMakeLists.txt

@@ -422,7 +422,7 @@ int main(int argc, char** argv)
         if(WX_ABI_FOUND_MATCH)
             # add C++ flags
             if(CMAKE_COMPILER_IS_GNUCXX)
-                string(REGEX REPLACE "<FLAGS>" "<FLAGS> -fabi-version=${WX_ABI_VERSION} " CMAKE_CXX_COMPILE_OBJECT ${CMAKE_CXX_COMPILE_OBJECT})
+                string(REGEX REPLACE "<FLAGS>" "<FLAGS> -fabi-version=${WX_ABI_VERSION} " CMAKE_CXX_COMPILE_OBJECT "${CMAKE_CXX_COMPILE_OBJECT}")
                 set(CMAKE_CXX_LINK_EXECUTABLE "${CMAKE_CXX_LINK_EXECUTABLE} -fabi-version=${WX_ABI_VERSION}")
             elseif(CMAKE_CXX_COMPILER_ID STREQUAL Clang)
                 string(REGEX REPLACE "<FLAGS>" "<FLAGS> -D__GXX_ABI_VERSION=10${WX_ABI_VERSION} " CMAKE_CXX_COMPILE_OBJECT ${CMAKE_CXX_COMPILE_OBJECT})
@@ -939,6 +939,27 @@ if(NOT TRANSLATIONS_ONLY)
         TARGET_LINK_LIBRARIES(visualboyadvance-m ${SPARKLE_FRAMEWORK})
     endif()
 
+    # On MSYS2 transform wx lib paths to native paths for Ninja.
+    if(MSYS)
+        set(libs "")
+
+        foreach(lib ${wxWidgets_LIBRARIES})
+            if(NOT lib MATCHES "^(-Wl,|-mwindows$|-pipe$)")
+                if(lib MATCHES "^/")
+                    cygpath(lib "${lib}")
+                endif()
+
+                if(VBAM_STATIC AND lib MATCHES "^-l(wx.*|jpeg|tiff|jbig|lzma|expat)$")
+                    cygpath(lib "$ENV{MSYSTEM_PREFIX}/lib/lib${CMAKE_MATCH_1}.a")
+                endif()
+
+                list(APPEND libs "${lib}")
+            endif()
+        endforeach()
+
+        set(wxWidgets_LIBRARIES "${libs}")
+    endif()
+
     target_link_libraries(
         visualboyadvance-m
         ${wxWidgets_LIBRARIES}
@@ -948,10 +969,6 @@ if(NOT TRANSLATIONS_ONLY)
     set(WIN32_MEDIA_FOUNDATION_LIBS dxva2 evr mf mfplat mfplay mfreadwrite mfuuid amstrmid)
 
     if(ENABLE_FFMPEG)
-        if(WIN32)
-            list(APPEND FFMPEG_LIBRARIES secur32 bcrypt ${WIN32_MEDIA_FOUNDATION_LIBS})
-        endif()
-
         target_link_libraries(
             visualboyadvance-m
             ${FFMPEG_LIBRARIES}

src/wx/tests/CMakeLists.txt

@@ -1,3 +1,8 @@
+# TODO: Does not link on CLANG64.
+if(MSYS AND CMAKE_CXX_COMPILER_ID STREQUAL Clang)
+    return()
+endif()
+
 include(doctest)
 
 include_directories("${CMAKE_SOURCE_DIR}/third_party/include/doctest")