diff -ur squid-3.0.STABLE25.orig/configure.in squid-3.0.STABLE25.libmd5.patch/configure.in
--- squid-3.0.STABLE25.orig/configure.in	2010-03-13 21:45:43.000000000 -0800
+++ squid-3.0.STABLE25.libmd5.patch/configure.in	2010-03-24 14:19:47.000000000 -0800
@@ -2372,7 +2372,11 @@
 AC_CHECK_LIB(crypt, crypt, [CRYPTLIB="-lcrypt"])
 
 dnl Solaris10 provides MD5 natively through libmd5
-AC_CHECK_LIB(md5, MD5Init, [CRYPTLIB="$CRYPTLIB -lmd5"])
+case "$host" in
+	*-solaris*)
+	    AC_CHECK_LIB(md5, MD5Init, [CRYPTLIB="$CRYPTLIB -lmd5"])
+	    ;;
+esac
 
 AC_SUBST(CRYPTLIB)
 
Only in squid-3.0.STABLE25.libmd5.patch/: configure.in.orig