Locale changes

Systems that have locale support must be set to "C" locale otherwise
libmpv will complain.

Signed-off-by: Mahyar Koshkouei <mahyar.koshkouei@gmail.com>

Makefile

@@ -104,6 +104,10 @@ else
 CFLAGS += -std=gnu99
 endif
 
+ifneq (,$(locale))
+	CFLAGS += -DHAVE_LOCALE
+endif
+
 # Always have some debugging information.
 CFLAGS += -g
 ifeq ($(DEBUG), 1)

mpv-libretro.c

@@ -22,6 +22,10 @@
 #include <stdlib.h>
 #include <unistd.h>
 
+#ifdef HAVE_LOCALE
+#include <locale.h>
+#endif
+
 #include <mpv/client.h>
 #include <mpv/opengl_cb.h>
 
@@ -163,6 +167,10 @@ static void context_reset(void)
 {
 	const char *cmd[] = {"loadfile", filepath, NULL};
 
+#ifdef HAVE_LOCALE
+	setlocale(LC_NUMERIC, "C");
+#endif
+
 	mpv = mpv_create();
 
 	if(!mpv)