[cmake] initial support for static Linux builds

A LOT of things are still missing, notably:

- most distros don't package static libs, like at all
- ci target
  * qt6ct :(

Tbh this probably isn't worth it at all for the AppImage, but it's an
option I guess

Signed-off-by: crueter <crueter@eden-emu.dev>

CMakeLists.txt

@@ -125,14 +125,16 @@ if (YUZU_STATIC_BUILD)
     set(Boost_USE_STATIC_LIBS ON)
     set(BUILD_SHARED_LIBS OFF)
 
-    ## find .a libs first (static, usually)
-    set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
+    if (NOT PLATFORM_LINUX)
+        ## find .a libs first (static, usually)
+        set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
 
-    ## some libraries define a Library::Name_static alternative ##
-    set(YUZU_STATIC_SUFFIX _static)
+        ## some libraries define a Library::Name_static alternative ##
+        set(YUZU_STATIC_SUFFIX _static)
 
-    ## some libraries use CMAKE_IMPORT_LIBRARY_SUFFIX e.g. Harfbuzz ##
-    set(CMAKE_IMPORT_LIBRARY_SUFFIX ".a")
+        ## some libraries use CMAKE_IMPORT_LIBRARY_SUFFIX e.g. Harfbuzz ##
+        set(CMAKE_IMPORT_LIBRARY_SUFFIX ".a")
+    endif()
 
     if (MINGW)
         # simple hook to reject dynamic libs
@@ -175,6 +177,15 @@ if (YUZU_STATIC_BUILD)
         set(SPIRV-Tools_FORCE_BUNDLED ON)
         set(SPIRV-Headers_FORCE_BUNDLED ON)
         set(zstd_FORCE_BUNDLED ON)
+    elseif(PLATFORM_LINUX)
+        # Most distros don't package static libs :(
+        set(YUZU_USE_CPM ON)
+        set(CPMUTIL_FORCE_BUNDLED ON)
+
+        set(YUZU_USE_BUNDLED_FFMPEG ON)
+        set(YUZU_USE_BUNDLED_SDL2 ON)
+        set(YUZU_USE_BUNDLED_OPENSSL ON)
+        set(YUZU_USE_BUNDLED_SIRIT ON)
     endif()
 endif()
 
@@ -802,6 +813,16 @@ if (YUZU_TESTS OR DYNARMIC_TESTS)
     find_package(Catch2)
 endif()
 
+# Qt expects this target
+if (YUZU_STATIC_BUILD AND PLATFORM_LINUX)
+    get_target_property(RDOC_TARGET RenderDoc::API ALIASED_TARGET)
+    if (RDOC_TARGET)
+        add_library(RenderDoc::RenderDoc ALIAS ${RDOC_TARGET})
+    else()
+        add_library(RenderDoc::RenderDoc ALIAS RenderDoc::API)
+    endif()
+endif()
+
 if (ENABLE_QT)
     if (YUZU_USE_BUNDLED_QT)
         download_qt(6.8.3)

CMakeModules/StaticQtLibs.cmake

@@ -16,13 +16,15 @@ function(static_qt_link target)
     # NB: yes, we have to put them here twice. I have no idea why
 
     # libtiff.a
-    extra_libs(tiff jbig bz2 lzma deflate jpeg tiff)
+    if (MINGW)
+        extra_libs(tiff jbig bz2 lzma deflate jpeg tiff)
 
-    # libfreetype.a
-    extra_libs(freetype bz2 Lerc brotlidec brotlicommon freetype)
+        # libfreetype.a
+        extra_libs(freetype bz2 Lerc brotlidec brotlicommon freetype)
 
-    # libharfbuzz.a
-    extra_libs(harfbuzz graphite2)
+        # libharfbuzz.a
+        extra_libs(harfbuzz graphite2)
+    endif()
 
     # sijfjkfnjkdfjsbjsbsdfhvbdf
     if (ENABLE_OPENSSL)

src/CMakeLists.txt

@@ -174,7 +174,7 @@ else()
         add_compile_definitions(QT_STATICPLUGIN)
 
         # macos doesn't even let you make static executables... wtf?
-        if (NOT APPLE)
+        if (NOT APPLE AND NOT PLATFORM_LINUX)
             add_compile_options(-static)
             if (YUZU_STATIC_BUILD)
                 # yuzu-cmd requires us to explicitly link libpthread, libgcc, and libstdc++ as static