Fix compile on ppc.

stepmania/src/libtomcrypt/src/headers/tomcrypt_cfg.h

@@ -80,8 +80,10 @@ LTC_EXPORT int   LTC_CALL XSTRCMP(const char *s1, const char *s2);
 #endif
 
 /* detect PPC32 */
-#if !defined(__STRICT_ANSI__) && defined(LTC_PPC32)
+#if !defined(__STRICT_ANSI__) && (defined(LTC_PPC32) || defined(__ppc__))
+#if !defined(ENDIAN_BIG) // SM
    #define ENDIAN_BIG
+#endif
    #define ENDIAN_32BITWORD
    #define LTC_FAST
    #define LTC_FAST_TYPE    unsigned long

stepmania/src/libtomcrypt/src/headers/tomcrypt_pk.h

@@ -496,11 +496,13 @@ int der_printable_char_encode(int c);
 int der_printable_value_decode(int v);
 
 /* UTF-8 */
+#ifndef _BSD_WCHAR_T_DEFINED_
 #if (defined(SIZE_MAX) || __STDC_VERSION__ >= 199901L || defined(WCHAR_MAX) || defined(_WCHAR_T) || defined(_WCHAR_T_DEFINED)) && !defined(LTC_NO_WCHAR)
 #include <wchar.h>
 #else
 typedef ulong32 wchar_t;
 #endif
+#endif
 
 int der_encode_utf8_string(const wchar_t *in,  unsigned long inlen,
                            unsigned char *out, unsigned long *outlen);