MSVC 2003 - buildfix

Makefile

@@ -54,7 +54,11 @@ else ifneq ($(findstring MINGW,$(shell uname -a)),)
    system_platform = win
 endif
 
+ifneq (,$(findstring msvc,$(platform)))
+LIBS :=
+else
 LIBS := -lm
+endif
 
 ifeq ($(ARCHFLAGS),)
 ifeq ($(archs),ppc)

Makefile.common

@@ -103,6 +103,7 @@ ifneq ($(STATIC_LINKING),1)
 					 $(CORE_DIR)/libretro-common/string/stdstring.c \
 					 $(CORE_DIR)/libretro-common/file/file_path.c \
 					 $(CORE_DIR)/libretro-common/compat/compat_strl.c \
+					 $(CORE_DIR)/libretro-common/compat/compat_posix_string.c \
 					 $(CORE_DIR)/libretro-common/compat/compat_strcasestr.c \
 					 $(CORE_DIR)/libretro-common/compat/compat_snprintf.c
 endif

libretro-common/compat/compat_posix_string.c

+/* Copyright  (C) 2010-2017 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (compat_posix_string.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <ctype.h>
+
+#include <compat/posix_string.h>
+
+#ifdef _WIN32
+
+#undef strcasecmp
+#undef strdup
+#undef isblank
+#undef strtok_r
+#include <ctype.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <compat/strl.h>
+
+#include <string.h>
+
+int retro_strcasecmp__(const char *a, const char *b)
+{
+   while (*a && *b)
+   {
+      int a_ = tolower(*a);
+      int b_ = tolower(*b);
+
+      if (a_ != b_)
+         return a_ - b_;
+
+      a++;
+      b++;
+   }
+
+   return tolower(*a) - tolower(*b);
+}
+
+char *retro_strdup__(const char *orig)
+{
+   size_t len = strlen(orig) + 1;
+   char *ret  = (char*)malloc(len);
+   if (!ret)
+      return NULL;
+
+   strlcpy(ret, orig, len);
+   return ret;
+}
+
+int retro_isblank__(int c)
+{
+   return (c == ' ') || (c == '\t');
+}
+
+char *retro_strtok_r__(char *str, const char *delim, char **saveptr)
+{
+   char *first = NULL;
+   if (!saveptr || !delim)
+      return NULL;
+
+   if (str)
+      *saveptr = str;
+
+   do
+   {
+      char *ptr = NULL;
+      first = *saveptr;
+      while (*first && strchr(delim, *first))
+         *first++ = '\0';
+
+      if (*first == '\0')
+         return NULL;
+
+      ptr = first + 1;
+
+      while (*ptr && !strchr(delim, *ptr))
+         ptr++;
+
+      *saveptr = ptr + (*ptr ? 1 : 0);
+      *ptr     = '\0';
+   } while (strlen(first) == 0);
+
+   return first;
+}
+
+#endif