[client] major restructure of platform specific code

client/displayservers/X11/CMakeLists.txt

@@ -0,0 +1,29 @@
+cmake_minimum_required(VERSION 3.0)
+project(displayserver_X11 LANGUAGES C)
+
+find_package(PkgConfig)
+pkg_check_modules(DISPLAYSERVER_X11_PKGCONFIG REQUIRED
+	x11
+	xfixes
+)
+
+pkg_check_modules(DISPLAYSERVER_X11_OPT_PKGCONFIG
+	xi
+)
+
+add_library(displayserver_X11 STATIC
+	x11.c
+)
+
+target_link_libraries(displayserver_X11
+	${DISPLAYSERVER_X11_PKGCONFIG_LIBRARIES}
+	${DISPLAYSERVER_X11_OPT_PKGCONFIG_LIBRARIES}
+	lg_common
+)
+
+target_include_directories(displayserver_X11
+	PRIVATE
+		src
+		${DISPLAYSERVER_X11_PKGCONFIG_INCLUDE_DIRS}
+		${DISPLAYSERVER_X11_OPT_PKGCONFIG_INCLUDE_DIRS}
+)