Check for strcasestr and workaround it on systems without it

config/hal.c

@@ -260,7 +260,17 @@ device_added(LibHalContext *hal_ctx, const char *udi)
                      * Since we can't predict the order in which the keys
                      * arrive, we need to store them.
                      */
+#ifndef HAVE_STRCASESTR
+                    int psi_key_len = strlen(psi_key);
+                    char *lower_psi_key = xalloc(psi_key_len + 1);
+
+                    CopyISOLatin1Lowered((unsigned char *) lower_psi_key,
+                                         (unsigned char *) psi_key,
+                                         psi_key_len);
+                    if ((tmp = strstr(lower_psi_key, "xkb")))
+#else
                     if ((tmp = strcasestr(psi_key, "xkb")))
+#endif
                     {
                         if (!strcasecmp(&tmp[3], "layout"))
                         {
@@ -289,6 +299,9 @@ device_added(LibHalContext *hal_ctx, const char *udi)
                         add_option(&options, psi_key + sizeof(LIBHAL_PROP_KEY)-1, tmp_val);
                         xfree(tmp_val);
                     }
+#ifndef HAVE_STRCASESTR
+                    xfree(lower_psi_key);
+#endif
                 }
             } else if (!strncasecmp(psi_key, LIBHAL_XKB_PROP_KEY, sizeof(LIBHAL_XKB_PROP_KEY)-1)){
 

configure.ac

@@ -191,7 +191,7 @@ dnl Checks for library functions.
 AC_FUNC_VPRINTF
 AC_CHECK_FUNCS([geteuid getuid link memmove memset mkstemp strchr strrchr \
 		strtol getopt getopt_long vsnprintf walkcontext backtrace \
-		getisax getzoneid shmctl64])
+		getisax getzoneid shmctl64 strcasestr])
 AC_FUNC_ALLOCA
 dnl Old HAS_* names used in os/*.c.
 AC_CHECK_FUNC([getdtablesize],

include/dix-config.h.in

@@ -205,6 +205,9 @@
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
+/* Define to 1 if you have the `strcasestr' function. */
+#undef HAVE_STRCASESTR
+
 /* Define to 1 if you have the `strchr' function. */
 #undef HAVE_STRCHR