Link drm & zlib statically like before, make GL optional

external/ffmpeg/CMakeLists.txt

@@ -72,11 +72,11 @@ else()
             Xv
             Xext
             Xfixes
+            drm
         )
         target_link_libraries(external_ffmpeg
         INTERFACE
             X11
-            drm
             pthread
         )
     endif()

external/qt/CMakeLists.txt

@@ -259,6 +259,7 @@ else()
         target_link_static_libraries(external_qt
         INTERFACE
             proxy
+            epoxy
             xkbcommon
             xkbcommon-x11
             xcb-glx
@@ -276,6 +277,7 @@ else()
             xcb-util
             xcb-render-util
             xcb-keysyms
+            z
         )
         if (Qt5WaylandClient_FOUND)
             target_link_libraries(external_qt
@@ -288,13 +290,8 @@ else()
         INTERFACE
             desktop-app::linux_gtk_helper
             $<TARGET_FILE:desktop-app::linux_gtk_helper>
-        )
-        target_link_libraries(external_qt
-        INTERFACE
             fontconfig
             freetype
-            EGL
-            GL
             xcb
             X11
             X11-xcb

external/zlib/CMakeLists.txt

@@ -23,5 +23,5 @@ elseif (WIN32)
 elseif (APPLE)
     target_link_libraries(external_zlib INTERFACE ${libs_loc}/local/lib/libz.a)
 else()
-    target_link_libraries(external_zlib INTERFACE z)
+    target_link_static_libraries(external_zlib INTERFACE z)
 endif()