+AC_CHECK_FUNCS([chroot fopencookie funopen gettext isinf mbrtowc memmem snprintf vsnprintf wcrtomb])
+AC_CHECK_HEADERS([utf8/wchar.h], LIBS="$LIBS -lutf8")
+AC_SEARCH_LIBS(mbrtowc, [mingwex msvcp60])
+
+STEPMAKE_PROGS(PKG_CONFIG, pkg-config, REQUIRED, 0.9.0)
+if test "$gui_b" = "yes"; then
+ STEPMAKE_GTK2(gtk+-2.0, REQUIRED, 2.4.0)
+fi # $gui_b
+
+if test "$reloc_b" = "yes"; then
+ AC_DEFINE(ARGV0_RELOCATION)
+fi # $reloc_b