zlib: make this cross buildable.

srcpkgs/zlib/template

@@ -1,24 +1,28 @@
 # Template build file for 'zlib'
 pkgname=zlib
 version=1.2.7
-homepage="http://www.zlib.net"
-distfiles="$homepage/$pkgname-$version.tar.bz2"
-build_style=configure
-configure_args="--prefix=/usr --shared"
-if [ "${XBPS_MACHINE}" = "x86_64" ]; then
-	configure_args="${configure_args} --64"
-fi
-make_build_args="CFLAGS=-fPIC"
-make_install_args="LDCONFIG="
 revision=1
+bootstrap=yes
+subpackages="zlib-devel"
 short_desc="A compression/decompression Library"
 maintainer="Juan RP <xtraeme@gmail.com>"
 license="zlib"
+homepage="http://www.zlib.net"
+distfiles="$homepage/$pkgname-$version.tar.bz2"
 checksum=49e2e9658dfb036900da6ea0267a737fa3c4eee6666776d378c79d52e9334934
 long_desc="
  This is a general purpose data compression library. All the code
  is thread safe. The data format used by the library is described
  by RFCs (Request for Comments) 1950 to 1952."
 
-bootstrap=yes
-subpackages="zlib-devel"
+do_configure() {
+	CFLAGS="$CFLAGS -fPIC" ./configure --prefix=/usr --shared
+}
+
+do_build() {
+	make ${makejobs}
+}
+
+do_install() {
+	make DESTDIR=${DESTDIR} LDCONFIG= install
+}