dhcp: fix crossbuild

Who the hell build such a fucked up buildsystem?

srcpkgs/dhcp/files/003_cross_fix.patch

@@ -0,0 +1,12 @@
+--- lib/export/dns/Makefile.in.orig	2011-05-17 01:47:16.000000000 +0200
++++ lib/export/dns/Makefile.in	2015-03-28 19:34:39.143820772 +0100
+@@ -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

srcpkgs/dhcp/template

@@ -10,13 +10,25 @@ license="ISC"
 homepage="https://www.isc.org/software/dhcp"
 distfiles="ftp://ftp.isc.org/isc/${pkgname}/${pkgname}-${version}/${pkgname}-${version}.tar.gz"
 checksum=505c5754526ba92669bfd64daa8b529c6694c4528b45c3f35743c6fd4bd72897
-configure_args="
- --enable-paranoia
+conf_files="/etc/dhcpd.conf"
+_configure_args+="--sbindir=/usr/bin --sysconfdir=/etc --enable-paranoia
  --with-srv-lease-file=/var/lib/dhcp/dhcpd.leases
  --with-srv6-lease-file=/var/lib/dhcp/dhcpd6.leases
  --with-cli-lease-file=/var/lib/dhclient/dhclient.leases
  --with-cli6-lease-file=/var/lib/dhclient/dhclient6.leases"
-conf_files="/etc/dhcpd.conf"
+
+pre_configure() {
+	if [ "$CROSS_BUILD" ]; then
+		# assume that there is /dev/random. Fixes cross compiling
+		sed -i "2i\ac_cv_file__dev_random=yes" configure
+
+		# patching bind Makefile to patch with a cross fix while building (WTF?!)
+		sed -i "s#./configure#patch -p0 < $FILESDIR/003_cross_fix.patch \&\& ac_cv_file__dev_random=yes ./configure $configure_args#" bind/Makefile
+	fi
+
+	# set real configure_args
+	configure_args+="$_configure_args"
+}
 
 post_install() {
 	vsv dhcpd4
@@ -28,7 +40,7 @@ dhclient_package() {
 	conf_files="/etc/dhclient.conf"
 	pkg_install() {
 		vmove etc/dhclient.conf
-		vmove usr/sbin/dhclient
+		vmove usr/bin/dhclient
 		vmove usr/share/man/man5/dhclient*
 		vmove usr/share/man/man8/dhclient*
 		vsv dhclient