nss_ldap and libcrypto from pkgsrc

[Emmanuel Dreyfus <manu%netbsd.org@localhost>]

Hello

When using PREFER_PKGSRC=openssl we get nss_ldap to mix libcrypto versions.
It gets /usr/pkg/lib/libcrypto.so from libldap dependency, and 
/usr/lib/libcrypto.so from libkrb5 dependency.

Here is a patch to introduce a krb5 option to databases/nss_ldap so that
the depency on libkrb5 can be removed, when it is not needed.

Is it ok to commit that fix?

--- pkgsrc/databases/nss_ldap/Makefile.orig
+++ pkgsrc/databases/nss_ldap/Makefile
@@ -1,8 +1,8 @@
 # $NetBSD: Makefile,v 1.23 2010/11/03 11:39:07 adam Exp $
 
 DISTNAME=      nss_ldap-265
-PKGREVISION=   1
+PKGREVISION=   2
 CATEGORIES=    databases
 MASTER_SITES=  http://www.padl.com/download/
 
 MAINTAINER=    pkgsrc-users%NetBSD.org@localhost
@@ -34,6 +34,8 @@
 pre-build:
        ${CP} ${FILESDIR}/netbsd.c  ${FILESDIR}/netbsd.h ${WRKSRC}
        ${LN} -fs /usr/include/nsswitch.h ${BUILDLINK_DIR}/include/nss.h
 
+.include "options.mk"
+
 .include "../../databases/openldap-client/buildlink3.mk"
 .include "../../mk/bsd.pkg.mk"
--- pkgsrc/databases/nss_ldap/options.mk.orig
+++ pkgsrc/databases/nss_ldap/options.mk
@@ -0,0 +1,14 @@
+# $NetBSD$
+
+PKG_OPTIONS_VAR=       PKG_OPTIONS.nss_ldap
+PKG_SUPPORTED_OPTIONS= krb5
+PKG_SUGGESTED_OPTIONS= krb5
+
+.include "../../mk/bsd.options.mk"
+
+.if empty(PKG_OPTIONS:Mkrb5)
+SUBST_CLASSES+=                krb5
+SUBST_STAGE.krb5=      post-configure
+SUBST_FILES.krb5=      Makefile
+SUBST_SED.krb5=                -e "s/-lkrb5//; s/-lcom_err//; s/-lgssapi//;"
+.endif
-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost