CMake: (Properly) build glfw separately with CMake

This reverts commit 2d6fb5c628068757387525e190c3afdbe33ae9c6,
and adds a fix for Alien::raylib's test failures.

The tests failed because the resulting static library didn't reexport
GLFW symbols. As a fix, we now have GLFW create a CMake "object library"
target that we can link with both the static and shared raylib.

This is arguably ugly... Proper fix would probably be a GLFW upstream
object library target.

Closes #536.

1 files changed, 14 insertions, 37 deletions

diff --git a/utils.cmake b/utils.cmake
index 71e34e01..27f74e68 100644..100755
--- a/utils.cmake
+++ b/utils.cmake
@@ -17,47 +17,24 @@ if(APPLE)
 elseif(WIN32)
   # no pkg-config --static on Windows yet...
 else()
-  if(USE_WAYLAND)
-    set(_GLFW_WAYLAND 1)
-  else()
-    set(_GLFW_X11 1)
-  endif()
-
   find_library(pthread NAMES pthread)
   find_package(OpenGL QUIET)
   if ("${OPENGL_LIBRARIES}" STREQUAL "")
-    if(NOT USE_WAYLAND)
-      # CFLAGS=-m32 cmake on Linux fails for some reason, so fallback to hardcoding
-      set(LIBS_PRIVATE m pthread GL X11 Xrandr Xinerama Xi Xxf86vm Xcursor)
-    else()
-      # CFLAGS=-m32 cmake on Linux fails for some reason, so fallback to hardcoding
-      set(LIBS_PRIVATE m pthread GL wayland-client wayland-cursor wayland-egl)
-    endif()
+    set(OPENGL_LIBRARIES "GL")
+  endif()
+
+  include_directories(${OPENGL_INCLUDE_DIR})
+
+  if ("${CMAKE_SYSTEM_NAME}" MATCHES "(Net|Open)BSD")
+    find_library(OSS_LIBRARY ossaudio)
+  endif()
+
+  set(LIBS_PRIVATE m pthread ${OPENGL_LIBRARIES} ${OSS_LIBRARY})
+  # TODO: maybe read those out of glfw's cmake config?
+  if(USE_WAYLAND)
+    set(LIBS_PRIVATE ${LIBS_PRIVATE} wayland-client wayland-cursor wayland-egl)
   else()
-    if(NOT USE_WAYLAND)
-      find_package(X11 REQUIRED X11)
-      find_library(XRANDR_LIBRARY Xrandr)
-      find_library(XI_LIBRARY Xi)
-      find_library(XINERAMA_LIBRARY Xinerama)
-      find_library(XXF86VM_LIBRARY Xxf86vm)
-      find_library(XCURSOR_LIBRARY Xcursor)
-    else()
-      find_library(WAYLAND_CLIENT_LIBRARY wayland-client)
-      find_library(WAYLAND_CURSOR_LIBRARY wayland-cursor)
-      find_library(WAYLAND_EGL_LIBRARY wayland-egl)
-    endif()
-
-    include_directories(${OPENGL_INCLUDE_DIR})
-
-    if ("${CMAKE_SYSTEM_NAME}" MATCHES "(Net|Open)BSD")
-      find_library(OSS_LIBRARY ossaudio)
-    endif()
-
-    if(NOT USE_WAYLAND)
-      set(LIBS_PRIVATE m ${pthread} ${OPENGL_LIBRARIES} ${X11_LIBRARIES} ${XRANDR_LIBRARY} ${XINERAMA_LIBRARY} ${XI_LIBRARY} ${XXF86VM_LIBRARY} ${XCURSOR_LIBRARY} ${OSS_LIBRARY})
-    else()
-      set(LIBS_PRIVATE m ${pthread} ${OPENGL_LIBRARIES} ${WAYLAND_CLIENT_LIBRARY} ${WAYLAND_CURSOR_LIBRARY} ${WAYLAND_EGL_LIBRARY} ${OSS_LIBRARY})
-    endif()
+    set(LIBS_PRIVATE ${LIBS_PRIVATE} X11 Xrandr Xinerama Xi Xxf86vm Xcursor)
   endif()
 endif()