Step1: build with busybox.

Signed-off-by: Chen Wang <wangchen20@iscas.ac.cn>

package/libzlib/make-host.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/bash
+source $(dirname "$0")/../common.sh
+
+PKGNAME=libzlib
+PKGVERSION=1.3.1
+PKGSOURCE_DIR=libzlib
+PKGSOURCE=zlib-1.3.1.tar.xz
+PKGURL=https://www.zlib.net/zlib-1.3.1.tar.xz
+
+PKGBUILDNAME=host-${PKGNAME}
+PKGBUILD_DIR=${BUILD_DIR}/${PKGBUILDNAME}-${PKGVERSION}
+
+echo "----> Building ${PKGBUILDNAME} ..."
+
+stamp_downloaded
+
+step_start extract
+mkdir -p ${PKGBUILD_DIR}
+xzcat ${DL_DIR}/${PKGSOURCE_DIR}/${PKGSOURCE} | tar --strip-components=1 -C ${PKGBUILD_DIR} -xf -
+chmod -R +rw ${PKGBUILD_DIR}
+step_end extract
+
+stamp_patched
+
+step_start configure
+(cd ${PKGBUILD_DIR}; rm -rf config.cache; eval "${HOST_CONFIGURE_OPTS} ./configure --prefix=\"${HOST_DIR}\" --sysconfdir=\"${HOST_DIR}/etc\"")
+step_end configure
+
+step_start build
+eval "${HOST_MAKE_ENV} /usr/bin/make -j1  -C ${PKGBUILD_DIR}"
+step_end build
+
+step_start install-host
+eval "${HOST_MAKE_ENV} /usr/bin/make -j1  -C ${PKGBUILD_DIR} LDCONFIG=true install"
+step_end install-host
+
+stamp_installed
+
+echo "<---- ${PKGBUILDNAME} build complete."