c99 fix, some linux housekeeping

examples/Makefile

@@ -40,7 +40,7 @@ ifeq ($(PLATFORM),PLATFORM_DESKTOP)
     else
         UNAMEOS:=$(shell uname)
         ifeq ($(UNAMEOS),Linux)
-            PLATFORM_OS=LINUX
+            PLATFORM_OS=linux
             LIBPATH=linux
         else
         ifeq ($(UNAMEOS),Darwin)
@@ -73,7 +73,9 @@ endif
 ifeq ($(PLATFORM),PLATFORM_RPI)
     CFLAGS = -O2 -s -Wall -std=gnu99 -fgnu89-inline
 else
-    CFLAGS = -O2 -s -Wall -std=c99
+    ifeq ($(PLATFORM_OS),LINUX)
+    CFLAGS = -O2 -s -Wall -std=c99 --D_DEFAULT_SOURCE
+    endif
 endif
 ifeq ($(PLATFORM),PLATFORM_WEB)
     CFLAGS = -O1 -Wall -std=c99 -s USE_GLFW=3 -s ASSERTIONS=1 --preload-file resources
@@ -88,7 +90,7 @@ ifeq ($(PLATFORM),PLATFORM_DESKTOP)
     ifeq ($(PLATFORM_OS),WINDOWS)
         RAYLIB_PATH = ../release/win32/mingw32
     endif
-    ifeq ($(PLATFORM_OS),LINUX)
+    ifeq ($(PLATFORM_OS),linux)
         RAYLIB_PATH = ../release/linux
     endif
     ifeq ($(PLATFORM_OS),OSX)
@@ -110,7 +112,7 @@ ifeq ($(PLATFORM),PLATFORM_RPI)
 endif
 ifeq ($(PLATFORM),PLATFORM_DESKTOP)
     # add standard directories for GNU/Linux
-    ifeq ($(PLATFORM_OS),LINUX)
+    ifeq ($(PLATFORM_OS),linux)
         INCLUDES += -I/usr/local/include/raylib/
     else ifeq ($(PLATFORM_OS),WINDOWS)
         # external libraries headers
@@ -141,7 +143,7 @@ endif
 # define any libraries to link into executable
 # if you want to link libraries (libname.so or libname.a), use the -lname
 ifeq ($(PLATFORM),PLATFORM_DESKTOP)
-    ifeq ($(PLATFORM_OS),LINUX)
+    ifeq ($(PLATFORM_OS),linux)
         # libraries for Debian GNU/Linux desktop compiling
         # requires the following packages:
         # libglfw3-dev libopenal-dev libegl1-mesa-dev
@@ -185,6 +187,11 @@ ifeq ($(PLATFORM_OS),WINDOWS)
     WINFLAGS = ../src/resources -Wl,--subsystem,windows
 endif
 
+# Linux Fix to timespect from 
+ifeq ($(PLATFORM_OS),linux)
+        CFLAGS += -D_DEFAULT_SOURCE
+    endif
+
 ifeq ($(PLATFORM),PLATFORM_WEB)
     EXT = .html
 endif
@@ -207,7 +214,6 @@ EXAMPLES = \
     core_3d_camera_first_person \
     core_2d_camera \
     core_world_screen \
-    core_oculus_rift \
     shapes_logo_raylib \
     shapes_basic_shapes \
     shapes_colors_palette \
@@ -338,8 +344,8 @@ core_world_screen: core_world_screen.c
 	$(CC) -o $@$(EXT) $< $(CFLAGS) $(INCLUDES) $(LFLAGS) $(LIBS) -D$(PLATFORM) $(WINFLAGS)
 
 # compile [core] example - oculus rift
-core_oculus_rift: core_oculus_rift.c
-	$(CC) -o $@$(EXT) $< $(CFLAGS) $(INCLUDES) $(LFLAGS) $(LIBS) -D$(PLATFORM) $(WINFLAGS)
+#core_oculus_rift: core_oculus_rift.c
+#	$(CC) -o $@$(EXT) $< $(CFLAGS) $(INCLUDES) $(LFLAGS) $(LIBS) -D$(PLATFORM) $(WINFLAGS)
 
 # compile [shapes] example - raylib logo (with basic shapes)
 shapes_logo_raylib: shapes_logo_raylib.c
@@ -497,13 +503,6 @@ audio_module_playing: audio_module_playing.c
 audio_raw_stream: audio_raw_stream.c
 	$(CC) -o $@$(EXT) $< $(CFLAGS) $(INCLUDES) $(LFLAGS) $(LIBS) -D$(PLATFORM) $(WINFLAGS)
 
-# Linux Fix to timespect from 
-ifeq ($(PLATFORM),PLATFORM_DESKTOP)
-    ifeq ($(PLATFORM_OS),LINUX)
-        CFLAGS += -D_POSIX_C_SOURCE=199309L
-    endif
-endif
-
 # compile [physac] example - physics demo
 physics_demo: physics_demo.c
 	$(CC) -o $@$(EXT) $< $(CFLAGS) $(INCLUDES) $(LFLAGS) $(LIBS) -lpthread -D$(PLATFORM) $(WINFLAGS)
@@ -537,7 +536,7 @@ ifeq ($(PLATFORM),PLATFORM_DESKTOP)
 		find . -type f -perm +ugo+x -delete
 		rm -f *.o
     else
-    ifeq ($(PLATFORM_OS),LINUX)
+    ifeq ($(PLATFORM_OS),linux)
 		find -type f -executable | xargs file -i | grep -E 'x-object|x-archive|x-sharedlib|x-executable' | rev | cut -d ':' -f 2- | rev | xargs rm -f
     else
 		del *.o *.exe

src/Makefile

@@ -60,7 +60,7 @@ ifeq ($(PLATFORM),PLATFORM_DESKTOP)
     else
         UNAMEOS:=$(shell uname)
         ifeq ($(UNAMEOS),Linux)
-            PLATFORM_OS=LINUX
+            PLATFORM_OS=linux
         else
         ifeq ($(UNAMEOS),Darwin)
             PLATFORM_OS=OSX
@@ -153,12 +153,16 @@ endif
 
 # define compiler flags:
 #  -O1                  defines optimization level
+#  -Og                  enable debugging
 #  -Wall                turns on most, but not all, compiler warnings
 #  -std=c99             defines C language mode (standard C from 1999 revision)
 #  -std=gnu99           defines C language mode (GNU C from 1999 revision)
 #  -fgnu89-inline       declaring inline functions support (GCC optimized)
 #  -Wno-missing-braces  ignore invalid warning (GCC bug 53119)
-CFLAGS = -O1 -Wall -std=gnu99 -fgnu89-inline -Wno-missing-braces
+#  -D_DEFAULT_SOURCE    use with -std=c99 on Linux to enable timespec and audio
+#CFLAGS = -O1 -Wall -std=gnu99 -fgnu89-inline -Wno-missing-braces
+CFLAGS = -O1 -Wall -std=c99 -D_DEFAULT_SOURCE
+
 
 # if shared library required, make sure code is compiled as position independent
 ifeq ($(SHARED),YES)
@@ -213,7 +217,7 @@ ifeq ($(PLATFORM),PLATFORM_DESKTOP)
     ifeq ($(PLATFORM_OS),WINDOWS)
         OUTPUT_PATH = ../release/win32/mingw32
     endif
-    ifeq ($(PLATFORM_OS),LINUX)
+    ifeq ($(PLATFORM_OS),linux)
         OUTPUT_PATH = ../release/linux
     endif
     ifeq ($(PLATFORM_OS),OSX)
@@ -264,7 +268,7 @@ ifeq ($(PLATFORM),PLATFORM_WEB)
 	@echo "libraylib.bc generated (web version)!"
 else
     ifeq ($(SHARED),YES)
-        ifeq ($(PLATFORM_OS),LINUX)
+        ifeq ($(PLATFORM_OS),linux)
             # compile raylib to shared library version for GNU/Linux.
             # WARNING: you should type "make clean" before doing this target 
 			$(CC) -shared -o $(OUTPUT_PATH)/libraylib.so $(OBJS)
@@ -333,7 +337,7 @@ utils.o : utils.c utils.h
 # TODO: add other platforms.
 install :
 ifeq ($(ROOT),root)
-    ifeq ($(PLATFORM_OS),LINUX)
+    ifeq ($(PLATFORM_OS),linux)
         # On GNU/Linux there are some standard directories that contain
         # libraries and header files. These directory (/usr/local/lib and
         # /usr/local/include/) are for libraries that are installed
@@ -356,7 +360,7 @@ endif
 # TODO: see 'install' target.
 unistall :
 ifeq ($(ROOT),root)
-    ifeq ($(PLATFORM_OS),LINUX)
+    ifeq ($(PLATFORM_OS),linux)
 			rm --force /usr/local/include/raylib.h
         ifeq ($(SHARED),YES)
 			rm --force /usr/local/lib/libraylib.so

src/core.c

@@ -105,7 +105,7 @@
 #include <string.h>         // Required for: strcmp()
 //#include <errno.h>          // Macros for reporting and retrieving error conditions through error codes
 
-#if defined __linux || defined(PLATFORM_WEB)
+#if defined __linux__ || defined(PLATFORM_WEB)
     #include <sys/time.h>           // Required for: timespec, nanosleep(), select() - POSIX
 #elif defined __APPLE__
     #include <unistd.h>             // Required for: usleep()
@@ -115,7 +115,7 @@
     //#define GLFW_INCLUDE_NONE     // Disable the standard OpenGL header inclusion on GLFW3
     #include <GLFW/glfw3.h>         // GLFW3 library: Windows, OpenGL context and Input management
 
-    #ifdef __linux
+    #ifdef __linux__
         #define GLFW_EXPOSE_NATIVE_X11   // Linux specific definitions for getting
         #define GLFW_EXPOSE_NATIVE_GLX   // native functions like glfwGetX11Window
         #include <GLFW/glfw3native.h>    // which are required for hiding mouse
@@ -641,7 +641,7 @@ int GetScreenHeight(void)
 void ShowCursor()
 {
 #if defined(PLATFORM_DESKTOP)
-    #ifdef __linux
+    #ifdef __linux__
         XUndefineCursor(glfwGetX11Display(), glfwGetX11Window(window));
     #else
         glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
@@ -654,7 +654,7 @@ void ShowCursor()
 void HideCursor()
 {
 #if defined(PLATFORM_DESKTOP)
-    #ifdef __linux
+    #ifdef __linux__
         XColor col;
         const char nil[] = {0};
 
@@ -2036,7 +2036,7 @@ static void Wait(float ms)
 #else
     #if defined _WIN32
         Sleep(ms);
-    #elif defined __linux || defined(PLATFORM_WEB)
+    #elif defined __linux__ || defined(PLATFORM_WEB)
         struct timespec req = { 0 };
         time_t sec = (int)(ms/1000.0f);
         ms -= (sec*1000);

src/gestures.h

@@ -147,7 +147,7 @@ float GetGesturePinchAngle(void);                       // Get gesture pinch ang
     // Functions required to query time on Windows
     int __stdcall QueryPerformanceCounter(unsigned long long int *lpPerformanceCount);
     int __stdcall QueryPerformanceFrequency(unsigned long long int *lpFrequency);
-#elif defined(__linux)
+#elif defined(__linux__)
     #include <sys/time.h>       // Required for: timespec
     #include <time.h>           // Required for: clock_gettime()
 #endif
@@ -517,7 +517,7 @@ static double GetCurrentTime(void)
     time = (double)currentTime/clockFrequency*1000.0f;  // Time in miliseconds
 #endif
 
-#if defined(__linux)
+#if defined(__linux__)
     // NOTE: Only for Linux-based systems
     struct timespec now;
     clock_gettime(CLOCK_MONOTONIC, &now);

src/physac.h

@@ -249,7 +249,7 @@ PHYSACDEF void ClosePhysics(void);
     // Functions required to query time on Windows
     int __stdcall QueryPerformanceCounter(unsigned long long int *lpPerformanceCount);
     int __stdcall QueryPerformanceFrequency(unsigned long long int *lpFrequency);
-#elif defined(__linux) || defined(PLATFORM_WEB)
+#elif defined(__linux__) || defined(PLATFORM_WEB)
     #include <sys/time.h>           // Required for: timespec
     #include <time.h>               // Required for: clock_gettime()
     #include <stdint.h>
@@ -277,7 +277,7 @@ PHYSACDEF void ClosePhysics(void);
 static unsigned int usedMemory = 0;                         // Total allocated dynamic memory
 static bool physicsThreadEnabled = false;                   // Physics thread enabled state
 static double currentTime = 0;                              // Current time in milliseconds
-#if defined(PLATFORM_ANDROID) || defined(PLATFORM_RPI) || defined(__linux) || defined(PLATFORM_WEB)
+#if defined(PLATFORM_ANDROID) || defined(PLATFORM_RPI) || defined(__linux__) || defined(PLATFORM_WEB)
     static double baseTime = 0;                             // Android and RPI platforms base time
 #endif
 static double startTime = 0;                                // Start time in milliseconds
@@ -1906,7 +1906,7 @@ static double GetCurrentTime(void)
         time = (double)((double)currentTime/clockFrequency)*1000;
     #endif
 
-    #if defined(PLATFORM_ANDROID) || defined(PLATFORM_RPI) || defined(__linux) || defined(PLATFORM_WEB)
+    #if defined(PLATFORM_ANDROID) || defined(PLATFORM_RPI) || defined(__linux__) || defined(PLATFORM_WEB)
         struct timespec ts;
         clock_gettime(CLOCK_MONOTONIC, &ts);
         uint64_t temp = (uint64_t)ts.tv_sec*1000000000LLU + (uint64_t)ts.tv_nsec;