diff --git a/Makefile b/Makefile
index 2da091af2c..35787962d6 100644
--- a/Makefile
+++ b/Makefile
@@ -77,10 +77,6 @@ else
 endif
 endif
 
-ifeq ($(HAVE_FBO), 1)
-   DEFINES += -DHAVE_FBO
-endif
-
 ifeq ($(HAVE_XVIDEO), 1)
    OBJ += gfx/xvideo.o input/x11_input.o
    LIBS += -lXv -lX11
@@ -133,7 +129,7 @@ ifneq ($(V),1)
    Q := @
 endif
 
-CFLAGS += -Wall -O3 -g -I.
+CFLAGS += -Wall -O3 -g -I. -pedantic
 ifneq ($(findstring icc,$(CC)),)
    CFLAGS += -std=c99
 else
diff --git a/audio/ext.c b/audio/ext.c
index 931778643b..b556c8ddf4 100644
--- a/audio/ext.c
+++ b/audio/ext.c
@@ -64,7 +64,7 @@ static void* audio_ext_init(const char *device, unsigned rate, unsigned latency)
       goto error;
    }
 
-   const ssnes_audio_driver_t* (*plugin_load)(void) = dylib_proc(ext->lib, "ssnes_audio_driver_init");
+   const ssnes_audio_driver_t* (*plugin_load)(void) = (const ssnes_audio_driver_t* (*)(void))dylib_proc(ext->lib, "ssnes_audio_driver_init");
 
    if (!plugin_load)
    {
diff --git a/driver.c b/driver.c
index e5ddae8d6e..db0c9e96cb 100644
--- a/driver.c
+++ b/driver.c
@@ -161,7 +161,8 @@ static void init_dsp_plugin(void)
       return;
    }
 
-   const ssnes_dsp_plugin_t* (*SSNES_API_CALLTYPE plugin_init)(void) = dylib_proc(g_extern.audio_data.dsp_lib, "ssnes_dsp_plugin_init");
+   const ssnes_dsp_plugin_t* (*SSNES_API_CALLTYPE plugin_init)(void) = 
+      (const ssnes_dsp_plugin_t *(*)(void))dylib_proc(g_extern.audio_data.dsp_lib, "ssnes_dsp_plugin_init");
    if (!plugin_init)
    {
       SSNES_ERR("Failed to find symbol \"ssnes_dsp_plugin_init\" in DSP plugin.\n");
@@ -310,8 +311,12 @@ static void init_filter(void)
       return;
    }
 
-   g_extern.filter.psize = dylib_proc(g_extern.filter.lib, "filter_size");
-   g_extern.filter.prender = dylib_proc(g_extern.filter.lib, "filter_render");
+   g_extern.filter.psize = 
+      (void (*)(unsigned*, unsigned*))dylib_proc(g_extern.filter.lib, "filter_size");
+   g_extern.filter.prender = 
+      (void (*)(uint32_t*, uint32_t*, 
+                unsigned, const uint16_t*, 
+                unsigned, unsigned, unsigned))dylib_proc(g_extern.filter.lib, "filter_render");
    if (!g_extern.filter.psize || !g_extern.filter.prender)
    {
       SSNES_ERR("Failed to find functions in filter...\n");
diff --git a/dynamic.c b/dynamic.c
index e1ed48cd74..8a377cabbc 100644
--- a/dynamic.c
+++ b/dynamic.c
@@ -18,6 +18,7 @@
 #include "dynamic.h"
 #include "general.h"
 #include <string.h>
+#include <assert.h>
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -34,13 +35,13 @@
 #ifdef HAVE_DYNAMIC
 #define DLSYM(lib, x) dylib_proc(lib, #x)
 
-#define SYM(x) do { \
-   p##x = DLSYM(lib_handle, x); \
+#define SYM(type, x) do { \
+   p##x = (type)DLSYM(lib_handle, x); \
    if (p##x == NULL) { SSNES_ERR("Failed to load symbol: \"%s\"\n", #x); exit(1); } \
 } while(0)
 
-#define OPT_SYM(x) do { \
-   p##x = DLSYM(lib_handle, x); \
+#define OPT_SYM(type, x) do { \
+   p##x = (type)DLSYM(lib_handle, x); \
 } while(0)
 
 static dylib_t lib_handle = NULL;
@@ -106,33 +107,38 @@ static void load_dynamic(void)
       exit(1);
    }
 
-   SYM(snes_init);
-   SYM(snes_set_video_refresh);
-   SYM(snes_set_audio_sample);
-   SYM(snes_set_input_poll);
-   SYM(snes_set_input_state);
-   OPT_SYM(snes_library_id);
-   SYM(snes_library_revision_minor);
-   SYM(snes_library_revision_major);
-   SYM(snes_cheat_reset);
-   SYM(snes_cheat_set);
-   SYM(snes_reset);
-   SYM(snes_run);
-   SYM(snes_get_region);
-   SYM(snes_load_cartridge_normal);
-   SYM(snes_load_cartridge_super_game_boy);
-   SYM(snes_load_cartridge_bsx);
-   SYM(snes_load_cartridge_bsx_slotted);
-   SYM(snes_load_cartridge_sufami_turbo);
-   SYM(snes_set_controller_port_device);
-   SYM(snes_serialize_size);
-   SYM(snes_serialize);
-   SYM(snes_unserialize);
-   SYM(snes_set_cartridge_basename);
-   SYM(snes_get_memory_data);
-   SYM(snes_get_memory_size);
-   SYM(snes_unload_cartridge);
-   SYM(snes_term);
+   SYM(void (*)(void), snes_init);
+   SYM(void (*)(snes_video_refresh_t), snes_set_video_refresh);
+   SYM(void (*)(snes_audio_sample_t), snes_set_audio_sample);
+   SYM(void (*)(snes_input_poll_t), snes_set_input_poll);
+   SYM(void (*)(snes_input_state_t), snes_set_input_state);
+   OPT_SYM(const char *(*)(void), snes_library_id);
+   SYM(unsigned (*)(void), snes_library_revision_minor);
+   SYM(unsigned (*)(void), snes_library_revision_major);
+   SYM(void (*)(void), snes_cheat_reset);
+   SYM(void (*)(unsigned, bool, const char*), snes_cheat_set);
+   SYM(void (*)(void), snes_reset);
+   SYM(void (*)(void), snes_run);
+   SYM(bool (*)(void), snes_get_region);
+   SYM(bool (*)(const char*, const uint8_t*, unsigned), snes_load_cartridge_normal);
+   SYM(bool (*)(const char*, const uint8_t*, unsigned, 
+            const char*, const uint8_t*, unsigned), snes_load_cartridge_super_game_boy);
+   SYM(bool (*)(const char*, const uint8_t*, unsigned, 
+            const char*, const uint8_t*, unsigned), snes_load_cartridge_bsx);
+   SYM(bool (*)(const char*, const uint8_t*, unsigned, 
+            const char*, const uint8_t*, unsigned), snes_load_cartridge_bsx_slotted);
+   SYM(bool (*)(const char*, const uint8_t*, unsigned, 
+            const char*, const uint8_t*, unsigned, 
+            const char*, const uint8_t*, unsigned), snes_load_cartridge_sufami_turbo);
+   SYM(void (*)(bool, unsigned), snes_set_controller_port_device);
+   SYM(unsigned (*)(void), snes_serialize_size);
+   SYM(bool (*)(uint8_t*, unsigned), snes_serialize);
+   SYM(bool (*)(const uint8_t*, unsigned), snes_unserialize);
+   SYM(void (*)(const char*), snes_set_cartridge_basename);
+   SYM(uint8_t *(*)(unsigned), snes_get_memory_data);
+   SYM(unsigned (*)(unsigned), snes_get_memory_size);
+   SYM(void (*)(void), snes_unload_cartridge);
+   SYM(void (*)(void), snes_term);
 }
 #endif
 
@@ -174,6 +180,9 @@ static void set_statics(void)
 
 void init_dlsym(void)
 {
+   // Guarantee that we can do "dirty" casting. Every OS that this program supports should pass this ...
+   assert(sizeof(void*) == sizeof(void (*)(void)));
+
 #ifdef HAVE_DYNAMIC
    if (strlen(g_settings.libsnes) > 0)
       load_dynamic();
@@ -205,12 +214,15 @@ dylib_t dylib_load(const char *path)
 #endif
 }
 
-void* dylib_proc(dylib_t lib, const char *proc)
+function_t dylib_proc(dylib_t lib, const char *proc)
 {
 #ifdef _WIN32
-   void *sym = (void*)GetProcAddress(lib, proc);
+   function_t sym = (function_t)GetProcAddress(lib, proc);
 #else
-   void *sym = dlsym(lib, proc);
+   // Dirty hack to workaround the non-legality of void* -> fn-pointer casts.
+   void *ptr_sym = dlsym(lib, proc); 
+   function_t sym;
+   memcpy(&sym, &ptr_sym, sizeof(void*));
 #endif
 
    if (!sym)
diff --git a/dynamic.h b/dynamic.h
index 6572c48cee..4ed107bdb3 100644
--- a/dynamic.h
+++ b/dynamic.h
@@ -25,10 +25,11 @@ void init_dlsym(void);
 void uninit_dlsym(void);
 
 typedef void *dylib_t;
+typedef void (*function_t)(void);
 
 dylib_t dylib_load(const char *path);
 void dylib_close(dylib_t lib);
-void* dylib_proc(dylib_t lib, const char *proc);
+function_t dylib_proc(dylib_t lib, const char *proc);
 
 extern void (*psnes_init)(void);
 
diff --git a/general.h b/general.h
index 3dcf53c2df..a25e931618 100644
--- a/general.h
+++ b/general.h
@@ -274,19 +274,19 @@ void parse_config(void);
 extern struct settings g_settings;
 extern struct global g_extern;
 
-#define SSNES_LOG(msg, args...) do { \
+#define SSNES_LOG(...) do { \
    if (g_extern.verbose) \
-      fprintf(stderr, "SSNES: " msg, ##args); \
+      fprintf(stderr, "SSNES: " __VA_ARGS__); \
       fflush(stderr); \
    } while(0)
 
-#define SSNES_ERR(msg, args...) do { \
-      fprintf(stderr, "SSNES [ERROR] :: " msg, ##args); \
+#define SSNES_ERR(...) do { \
+      fprintf(stderr, "SSNES [ERROR] :: " __VA_ARGS__); \
       fflush(stderr); \
    } while(0)
 
-#define SSNES_WARN(msg, args...) do { \
-      fprintf(stderr, "SSNES [WARN] :: " msg, ##args); \
+#define SSNES_WARN(...) do { \
+      fprintf(stderr, "SSNES [WARN] :: " __VA_ARGS__); \
       fflush(stderr); \
    } while(0)
 
diff --git a/gfx/ext.c b/gfx/ext.c
index 41f4ad67d2..d4e866e528 100644
--- a/gfx/ext.c
+++ b/gfx/ext.c
@@ -273,7 +273,8 @@ static void* video_ext_init(const video_info_t *video, const input_driver_t **in
       goto error;
    }
 
-   const ssnes_video_driver_t* (*video_init)(void) = dylib_proc(g_lib, "ssnes_video_init");
+   const ssnes_video_driver_t* (*video_init)(void) = 
+      (const ssnes_video_driver_t *(*)(void))dylib_proc(g_lib, "ssnes_video_init");
    if (!video_init)
    {
       SSNES_ERR("Couldn't find function ssnes_video_init in library ...\n");
diff --git a/gfx/gl.c b/gfx/gl.c
index 41ca093f70..e71a3ebc75 100644
--- a/gfx/gl.c
+++ b/gfx/gl.c
@@ -81,7 +81,7 @@ static PFNGLFRAMEBUFFERTEXTURE2DPROC pglFramebufferTexture2D = NULL;
 static PFNGLCHECKFRAMEBUFFERSTATUSPROC pglCheckFramebufferStatus = NULL;
 static PFNGLDELETEFRAMEBUFFERSPROC pglDeleteFramebuffers = NULL;
 
-#define LOAD_SYM(sym) if (!p##sym) p##sym = ((void*)SDL_GL_GetProcAddress(#sym))
+#define LOAD_SYM(sym) if (!p##sym) { SDL_SYM_WRAP(p##sym, #sym) }
 static bool load_fbo_proc(void)
 {
    LOAD_SYM(glGenFramebuffers);
@@ -942,12 +942,21 @@ static void gl_set_nonblock_state(void *data, bool state)
       SSNES_LOG("GL VSync => %s\n", state ? "off" : "on");
 #ifdef _WIN32
       static BOOL (APIENTRY *wgl_swap_interval)(int) = NULL;
-      if (!wgl_swap_interval) wgl_swap_interval = (BOOL (APIENTRY*)(int)) SDL_GL_GetProcAddress("wglSwapIntervalEXT");
+      if (!wgl_swap_interval)
+      {
+         SDL_SYM_WRAP(wgl_swap_interval, "wglSwapIntervalEXT");
+      }
       if (wgl_swap_interval) wgl_swap_interval(state ? 0 : 1);
 #else
       static int (*glx_swap_interval)(int) = NULL;
-      if (!glx_swap_interval) glx_swap_interval = (int (*)(int))SDL_GL_GetProcAddress("glXSwapIntervalSGI");
-      if (!glx_swap_interval) glx_swap_interval = (int (*)(int))SDL_GL_GetProcAddress("glXSwapIntervalMESA");
+      if (!glx_swap_interval) 
+      {
+         SDL_SYM_WRAP(glx_swap_interval, "glXSwapIntervalSGI");
+      }
+      if (!glx_swap_interval)
+      {
+         SDL_SYM_WRAP(glx_swap_interval, "glxSwapIntervalMESA");
+      }
       if (glx_swap_interval) glx_swap_interval(state ? 0 : 1);
 #endif
    }
diff --git a/gfx/gl_common.h b/gfx/gl_common.h
index 9ff0225ac7..2c6d14750b 100644
--- a/gfx/gl_common.h
+++ b/gfx/gl_common.h
@@ -106,6 +106,13 @@ struct gl_tex_info
    float coord[8];
 };
 
+// Not legal to cast void* to fn-pointer. Need dirty hack to be compilant.
+// sizeof(void*) == sizeof(void (*)(void)) is asserted earlier.
+#define SDL_SYM_WRAP(sym, symbol) { \
+   void *sym__ = SDL_GL_GetProcAddress(symbol); \
+   memcpy(&(sym), &sym__, sizeof(void*)); \
+}
+
 // Windows ... <_<
 #if (defined(HAVE_XML) || defined(HAVE_CG)) && defined(_WIN32)
 extern PFNGLCLIENTACTIVETEXTUREPROC pglClientActiveTexture;
diff --git a/gfx/shader_cg.c b/gfx/shader_cg.c
index b71ebc5543..13229701d2 100644
--- a/gfx/shader_cg.c
+++ b/gfx/shader_cg.c
@@ -321,7 +321,7 @@ static bool load_plain(const char *path)
    return true;
 }
 
-#define print_buf(buf, args...) snprintf(buf, sizeof(buf), ##args)
+#define print_buf(buf, ...) snprintf(buf, sizeof(buf), __VA_ARGS__)
 
 #ifdef HAVE_CONFIGFILE
 static bool load_textures(const char *dir_path, config_file_t *conf)
diff --git a/gfx/shader_glsl.c b/gfx/shader_glsl.c
index 933db488d0..c1f5b33441 100644
--- a/gfx/shader_glsl.c
+++ b/gfx/shader_glsl.c
@@ -706,7 +706,7 @@ static bool compile_programs(GLuint *gl_prog, struct shader_program *progs, size
    return true;
 }
 
-#define LOAD_GL_SYM(SYM) if (!(pgl##SYM)) pgl##SYM = SDL_GL_GetProcAddress("gl" #SYM)
+#define LOAD_GL_SYM(SYM) if (!pgl##SYM) { SDL_SYM_WRAP(pgl##SYM, "gl" #SYM) }
 
 bool gl_glsl_init(const char *path)
 {