--- rxvt-unicode/configure.ac	2010/03/31 13:14:50	1.109
+++ rxvt-unicode/configure.ac	2010/07/16 17:49:56	1.111
@@ -76,11 +76,11 @@
 esac
 
 dnl# FreeBSD needs to link libxpg4
-AC_CHECK_FUNC(setlocale,     [], [AC_CHECK_LIB(xpg4,   setlocale,     [LIBS="$LIBS -lxpg4"])])
+AC_SEARCH_LIBS(setlocale,     xpg4)
 
 dnl# solaris needs to link libnsl and socket
-AC_CHECK_FUNC(gethostbyname, [], [AC_CHECK_LIB(nsl,    gethostbyname, [LIBS="$LIBS -lnsl"])])
-AC_CHECK_FUNC(socket,        [], [AC_CHECK_LIB(socket, socket,        [LIBS="$LIBS -lsocket"])])
+AC_SEARCH_LIBS(gethostbyname, nsl)
+AC_SEARCH_LIBS(socket,        socket)
 
 support_frills=yes
 support_inheritpixmap=yes
@@ -198,6 +198,16 @@
   fi
 fi
 
+support_256_color=no
+AC_ARG_ENABLE(256-color,
+  [  --enable-256-color      enable 256-color support],
+  [if test x$enableval = xyes; then
+    support_256_color=yes
+  fi])
+if test x$support_256_color = xyes; then
+  AC_DEFINE(USE_256_COLORS, 1, Define if you want 256-color support)
+fi
+
 AC_ARG_ENABLE(unicode3,
   [  --enable-unicode3       use 21 instead of 16 bits to represent unicode characters],
   [if test x$enableval = xyes -o x$enableval = xno; then