CMake: Search dependencies and build pkg-config's Libs.private with it

src/CMakeLists.txt

@@ -90,25 +90,28 @@ set(sources ${raylib_sources} ${mini_al})
 # Which platform?
 if(${PLATFORM} MATCHES "PLATFORM_DESKTOP")
 
-  if(LINUX)
-    foreach(L ${LIBS_PRIVATE})
-      set(PKG_CONFIG_LIBS_PRIVATE "${PKG_CONFIG_LIBS_PRIVATE} -l${L}")
-    endforeach(L)
-  endif()
+  foreach(L ${LIBS_PRIVATE})
+      get_filename_component(DIR  ${L} PATH)
+      get_filename_component(LIBFILE ${L} NAME_WE)
+      STRING(REGEX REPLACE "^lib" "" FILE ${LIBFILE})
 
-  if(APPLE)
-    # TODO extract framework location and name from ${LIBS_PRIVATE}
-    # and specify them as -F and -framework instead of hardcoding
-    foreach(F OpenGL Cocoa)
-      set(PKG_CONFIG_LIBS_PRIVATE "${PKG_CONFIG_LIBS_PRIVATE} -framework ${F}")
-    endforeach(F)
-  endif()
+      if (${L} MATCHES "[.]framework$")
+          set(FILE_OPT "-framework ${FILE}")
+          set(DIR_OPT  "-F${DIR} ")
+      else()
+          set(FILE_OPT "-l${FILE}")
+          set(DIR_OPT  "-L${DIR} ")
+      endif()
+
+      if ("${DIR}" STREQUAL "" OR "${DIR}" STREQUAL "${LASTDIR}")
+          set (DIR_OPT "")
+      endif()
+
+      set(LASTDIR ${DIR})
+
+      set(PKG_CONFIG_LIBS_PRIVATE "${PKG_CONFIG_LIBS_PRIVATE} ${DIR_OPT}${FILE_OPT}")
+  endforeach(L)
 
-  if(CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
-    foreach(L ${LIBS_PRIVATE})
-    	set(PKG_CONFIG_LIBS_PRIVATE "${PKG_CONFIG_LIBS_PRIVATE} -l${L}")
-    endforeach(L)
-  endif()
 
   if(${SHARED_RAYLIB})
     add_library(${RAYLIB}_shared SHARED ${sources})

utils.cmake

@@ -1,9 +1,5 @@
 # All sorts of things that we need cross project
-cmake_minimum_required(VERSION 2.8.0)
-
-if(CMAKE_SYSTEM_NAME STREQUAL Linux)
-	set(LINUX TRUE)
-endif()
+cmake_minimum_required(VERSION 2.8.)
 
 # Linking for OS X -framework options
 # Will do nothing on other OSes
@@ -16,32 +12,33 @@ if(APPLE)
 
   set(LIBS_PRIVATE ${OPENGL_LIBRARY} ${COCOA_LIBRARY}
                    ${IOKIT_LIBRARY} ${COREFOUNDATION_LIBRARY} ${COREVIDEO_LIBRARY})
+elseif(WIN32)
+  # no pkg-config --static on Windows yet...
+else()
+  find_library(pthread NAMES pthread)
+  find_package(OpenGL)
+  if ("${OPENGL_LIBRARIES}" STREQUAL "")
+    # CFLAGS=-m32 cmake on Linux fails for some reason, so fallback to hardcoding
+    set(LIBS_PRIVATE m pthread GL X11 Xrandr Xinerama Xi Xxf86vm Xcursor)
+  else()
+    find_package(X11 REQUIRED X11)
+    find_library(XRANDR_LIBRARY Xrandr)
+    find_library(XI_LIBRARY Xi)
+    find_library(XINERAMA_LIBRARY Xinerama)
+    find_library(XXF86VM_LIBRARY Xxf86vm)
+    find_library(XCURSOR_LIBRARY Xcursor)
+
+    include_directories(${OPENGL_INCLUDE_DIR})
+
+    set(LIBS_PRIVATE m ${pthread} ${OPENGL_LIBRARIES} ${X11_LIBRARIES} ${XRANDR_LIBRARY} ${XINERAMA_LIBRARY} ${XI_LIBRARY} ${XXF86VM_LIBRARY} ${XCURSOR_LIBRARY})
+  endif()
 endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL Linux)
-  set(LIBS_PRIVATE
-      m pthread dl
-      GL
-      X11 Xrandr Xinerama Xi Xxf86vm Xcursor)  # X11 stuff
+  set(LINUX TRUE)
+  set(LIBS_PRIVATE dl ${LIBS_PRIVATE})
 endif()
 
-if(CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
-   find_package(OpenGL REQUIRED)
-   include_directories(${OPENGL_INCLUDE_DIR})
-
-   find_package(X11 REQUIRED)
-   find_library(pthread NAMES pthread)
-   find_library(Xrandr NAMES Xrandr)
-   find_library(Xi NAMES Xi)
-   find_library(Xinerama NAMES Xinerama)
-   find_library(Xxf86vm NAMES Xxf86vm)
-   find_library(Xcursor NAMES Xcursor)
-
-   set(LIBS_PRIVATE m ${pthread} ${X11_LIBRARIES} ${Xrandr} ${Xinerama} ${Xi} ${Xxf86vm} ${Xcursor})
-endif()
-
-# TODO Support Windows
-
 # Do the linking for executables that are meant to link raylib
 function(link_libraries_to_executable executable)
   # And raylib