Fix net/isc-dhcp4 cross-build on NetBSD.

XXX Should have `.if ${OPSYS} == "NetBSD"' for the ac_cv_* settings.

Index: net/isc-dhcp4/Makefile.common
===================================================================
RCS file: /cvsroot/pkgsrc/net/isc-dhcp4/Makefile.common,v
retrieving revision 1.20
diff -p -u -r1.20 Makefile.common
--- net/isc-dhcp4/Makefile.common	10 Apr 2013 11:31:27 -0000	1.20
+++ net/isc-dhcp4/Makefile.common	23 Apr 2013 13:29:19 -0000
@@ -26,7 +26,7 @@ DHCP_HOME?=		${VARBASE}/db/isc-dhcp
 DHCP_PID?=		${VARBASE}/run/isc-dhcp
 PKG_SYSCONFSUBDIR=	dhcp
 
-USE_TOOLS+=		gmake
+USE_TOOLS+=		gmake gzip tar
 USE_LANGUAGES+=		c c++
 
 PATCHDIR=		${.CURDIR}/../isc-dhcp4/patches
@@ -47,6 +47,10 @@ CONFIGURE_ARGS+=	--with-srv6-pid-file=${
 CONFIGURE_ARGS+=	--with-cli6-pid-file=${DHCP_PID}/isc-dhclient6.pid
 CONFIGURE_ARGS+=	--with-relay6-pid-file=${DHCP_PID}/isc-dhcrelay6.pid
 
+# [TRC 20130325: Kludge for cross-compilation.]
+CONFIGURE_ENV+=		ac_cv_file__dev_random=yes
+CONFIGURE_ENV+=		BUILD_CC=${NATIVE_CC:Q}
+
 SUBST_CLASSES+=		config
 SUBST_STAGE.config=	post-patch
 SUBST_FILES.config=	includes/dhcpd.h
@@ -57,4 +61,31 @@ SUBST_MESSAGE.config=   Fixing configura
 BUILD_DIRS=	${BUILD_SUBDIR}
 INSTALL_DIRS=	${SUBDIR}
 
+# [TRC 20130326: This crap should replaced by a dependency on
+# net/libbind, but that seems to be a different version of libbind.]
+post-extract:
+	(cd ${WRKSRC}/bind && gunzip -c bind.tar.gz | tar xf -)
+
+BIND_CONFIGURE_ARGS+=	--disable-kqueue
+BIND_CONFIGURE_ARGS+=	--disable-epoll
+BIND_CONFIGURE_ARGS+=	--disable-devpoll
+BIND_CONFIGURE_ARGS+=	--without-openssl
+BIND_CONFIGURE_ARGS+=	--without-libxml2
+BIND_CONFIGURE_ARGS+=	--enable-exportlib
+BIND_CONFIGURE_ARGS+=	--enable-threads=no
+BIND_CONFIGURE_ARGS+=	--with-export-includedir=${WRKSRC}/bind/include
+BIND_CONFIGURE_ARGS+=	--with-export-libdir=${WRKSRC}/bind/lib
+BIND_CONFIGURE_ARGS+=	--with-gssapi=no
+
+BIND_WRKSRC=		${WRKSRC}/bind/bind-9.8.4-P2
+
+post-configure:
+	${RUN}${_ULIMIT_CMD}					\
+	cd ${BIND_WRKSRC} &&					\
+	${PKGSRC_SETENV} ${_CONFIGURE_SCRIPT_ENV}		\
+		${CONFIG_SHELL} ${CONFIG_SHELL_FLAGS}		\
+			${CONFIGURE_SCRIPT}			\
+				${CONFIGURE_ARGS}		\
+				${BIND_CONFIGURE_ARGS}
+
 .include "../../security/openssl/buildlink3.mk"
Index: net/isc-dhcp4/distinfo
===================================================================
RCS file: /cvsroot/pkgsrc/net/isc-dhcp4/distinfo,v
retrieving revision 1.16
diff -p -u -r1.16 distinfo
--- net/isc-dhcp4/distinfo	10 Apr 2013 11:31:27 -0000	1.16
+++ net/isc-dhcp4/distinfo	23 Apr 2013 13:29:19 -0000
@@ -6,5 +6,6 @@ Size (dhcp-4.2.5-P1.tar.gz) = 8255960 by
 SHA1 (patch-aa) = cdb64616f16ee79bf14f496518a2958352ce1fc9
 SHA1 (patch-ab) = 3a36eb65c6b0a865f2d8a350fa083fa2fe549efd
 SHA1 (patch-ac) = 97af5dd9e787c63ca387fb05df20f42d90b985fb
+SHA1 (patch-bind_bind-9.8.4-P2_lib_export_dns_Makefile.in) = 4369cced9a567eed16617459daa5ddaa1ffecb23
 SHA1 (patch-common_dlpi.c) = e58c1b8d7a6badc62e59677e093c4d01f75b9379
 SHA1 (patch-includes_Makefile.in) = 6004f66e28cd53c0acd09746a284eefe70a3aef2
Index: net/isc-dhcp4/patches/patch-bind_bind-9.8.4-P2_lib_export_dns_Makefile.in
===================================================================
RCS file: net/isc-dhcp4/patches/patch-bind_bind-9.8.4-P2_lib_export_dns_Makefile.in
diff -N net/isc-dhcp4/patches/patch-bind_bind-9.8.4-P2_lib_export_dns_Makefile.in
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ net/isc-dhcp4/patches/patch-bind_bind-9.8.4-P2_lib_export_dns_Makefile.in	23 Apr 2013 13:29:19 -0000
@@ -0,0 +1,17 @@
+$NetBSD$
+
+Build gen with BUILD_CC and the associated BUILD_* flags so it can run
+on the build platform when cross-compiling.
+
+--- bind/bind-9.8.4-P2/lib/export/dns/Makefile.in.orig	2012-10-26 04:52:55.000000000 +0000
++++ bind/bind-9.8.4-P2/lib/export/dns/Makefile.in
+@@ -166,7 +166,8 @@ code.h:	gen
+ 	./gen -s ${srcdir} > code.h
+ 
+ gen: ${srcdir}/gen.c
+-	${CC} ${ALL_CFLAGS} ${LDFLAGS} -o $@ ${srcdir}/gen.c ${LIBS}
++	${BUILD_CC} ${BUILD_CFLAGS} -I${top_srcdir}/lib/isc/include \
++	${BUILD_CPPFLAGS} ${BUILD_LDFLAGS} -o $@ ${srcdir}/gen.c ${BUILD_LIBS}
+ 
+ #We don't need rbtdb64 for this library
+ #rbtdb64.@O@: rbtdb.c