Tweak makefiles for PLATFORM_DRM and move rcore_drm's dependencies to rcore.h

examples/Makefile

@@ -225,6 +225,7 @@ ifeq ($(PLATFORM),PLATFORM_DESKTOP)
     endif
 endif
 ifeq ($(PLATFORM),PLATFORM_DRM)
+    INCLUDE_PATHS += -I$(RAYLIB_INCLUDE_PATH)
     INCLUDE_PATHS += -I/usr/include/libdrm
 endif
 

src/Makefile

@@ -384,6 +384,7 @@ ifeq ($(PLATFORM),PLATFORM_DRM)
     # without EGL_NO_X11 eglplatform.h tears Xlib.h in which tears X.h in
     # which contains a conflicting type Font
     CFLAGS += -DEGL_NO_X11
+    CFLAGS += -Werror=implicit-function-declaration
 endif
 # Use Wayland display on Linux desktop
 ifeq ($(PLATFORM),PLATFORM_DESKTOP)

src/rcore.h

@@ -16,6 +16,41 @@
                                     // NOTE: GLFW3 already includes gl.h (OpenGL) headers
 #endif
 
+#if defined(PLATFORM_DRM)
+
+    #include <fcntl.h>   // POSIX file control definitions - open(), creat(), fcntl()
+    #include <unistd.h>  // POSIX standard function definitions - read(), close(), STDIN_FILENO
+    #include <termios.h> // POSIX terminal control definitions - tcgetattr(), tcsetattr()
+    #include <pthread.h> // POSIX threads management (inputs reading)
+    #include <dirent.h>  // POSIX directory browsing
+
+    #include <sys/ioctl.h>      // Required for: ioctl() - UNIX System call for device-specific input/output operations
+    #include <linux/kd.h>       // Linux: KDSKBMODE, K_MEDIUMRAM constants definition
+    #include <linux/input.h>    // Linux: Keycodes constants definition (KEY_A, ...)
+    #include <linux/joystick.h> // Linux: Joystick support library
+
+    #include <gbm.h>         // Generic Buffer Management (native platform for EGL on DRM)
+    #include <xf86drm.h>     // Direct Rendering Manager user-level library interface
+    #include <xf86drmMode.h> // Direct Rendering Manager mode setting (KMS) interface
+
+    #include "EGL/egl.h"    // Native platform windowing system interface
+    #include "EGL/eglext.h" // EGL extensions
+
+    typedef struct
+    {
+        pthread_t threadId; // Event reading thread id
+        int fd;             // File descriptor to the device it is assigned to
+        int eventNum;       // Number of 'event<N>' device
+        Rectangle absRange; // Range of values for absolute pointing devices (touchscreens)
+        int touchSlot;      // Hold the touch slot number of the currently being sent multitouch block
+        bool isMouse;       // True if device supports relative X Y movements
+        bool isTouch;       // True if device supports absolute X Y movements and has BTN_TOUCH
+        bool isMultitouch;  // True if device supports multiple absolute movevents and has BTN_TOUCH
+        bool isKeyboard;    // True if device has letter keycodes
+        bool isGamepad;     // True if device has gamepad buttons
+    } InputEventWorker;
+    
+#endif
 
 // PROVIDE A HEADER TO BE USED BY ALL THE rcore_* IMPLEMENTATIONS.
 /*

src/rcore_drm.c

@@ -4,38 +4,6 @@
 
 #include "rcore.h"
 
-#include <fcntl.h>   // POSIX file control definitions - open(), creat(), fcntl()
-#include <unistd.h>  // POSIX standard function definitions - read(), close(), STDIN_FILENO
-#include <termios.h> // POSIX terminal control definitions - tcgetattr(), tcsetattr()
-#include <pthread.h> // POSIX threads management (inputs reading)
-#include <dirent.h>  // POSIX directory browsing
-
-#include <sys/ioctl.h>      // Required for: ioctl() - UNIX System call for device-specific input/output operations
-#include <linux/kd.h>       // Linux: KDSKBMODE, K_MEDIUMRAM constants definition
-#include <linux/input.h>    // Linux: Keycodes constants definition (KEY_A, ...)
-#include <linux/joystick.h> // Linux: Joystick support library
-
-#include <gbm.h>         // Generic Buffer Management (native platform for EGL on DRM)
-#include <xf86drm.h>     // Direct Rendering Manager user-level library interface
-#include <xf86drmMode.h> // Direct Rendering Manager mode setting (KMS) interface
-
-#include "EGL/egl.h"    // Native platform windowing system interface
-#include "EGL/eglext.h" // EGL extensions
-
-typedef struct
-{
-    pthread_t threadId; // Event reading thread id
-    int fd;             // File descriptor to the device it is assigned to
-    int eventNum;       // Number of 'event<N>' device
-    Rectangle absRange; // Range of values for absolute pointing devices (touchscreens)
-    int touchSlot;      // Hold the touch slot number of the currently being sent multitouch block
-    bool isMouse;       // True if device supports relative X Y movements
-    bool isTouch;       // True if device supports absolute X Y movements and has BTN_TOUCH
-    bool isMultitouch;  // True if device supports multiple absolute movevents and has BTN_TOUCH
-    bool isKeyboard;    // True if device has letter keycodes
-    bool isGamepad;     // True if device has gamepad buttons
-} InputEventWorker;
-
 static bool InitGraphicsDevice(int width, int height);  // Initialize graphics device
 
 // Initialize window and OpenGL context