Added a bunch of missing HAVE_* defines tested with ./configure script to fix compilation on Linux with GCC 4.7.1. The issue likely caused by my previous commits related to Visual C++ port of the code.
diff --git a/config.h.in b/config.h.in
index 04f5dc5..2dad0d9 100644
--- a/config.h.in
+++ b/config.h.in
@@ -29,6 +29,9 @@
and to 0 otherwise. */
#undef HAVE_REALLOC
+/* Define to 1 if you have the `snprintf' function. */
+#undef HAVE_SNPRINTF
+
/* Define to 1 if you have the <stdarg.h> header file. */
#undef HAVE_STDARG_H
@@ -38,6 +41,12 @@
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
+/* Define to 1 if you have the `strcasecmp' function. */
+#undef HAVE_STRCASECMP
+
+/* Define to 1 if you have the `strdup' function. */
+#undef HAVE_STRDUP
+
/* Define to 1 if you have the `strerror' function. */
#undef HAVE_STRERROR