fix host build on Cygwin

package/libxml2/Makefile

@@ -34,7 +34,10 @@ $(eval $(call PKG_template,LIBXML2_PYTHON,libxml2-python,${PKG_VERSION}-${PKG_RE
 include $(TOPDIR)/mk/python.mk
 
 HOST_STYLE:=		auto
-HOST_CONFIGURE_ARGS+=	--without-python
+HOST_CONFIGURE_ARGS+=	--without-python \
+			--without-iconv \
+			--without-lzma \
+			--without-zlib
 HOST_MAKE_FLAGS+=	LDFLAGS=-lpthread
 
 AUTOTOOL_STYLE:=	autoreconf

package/libxslt/Makefile

@@ -32,7 +32,8 @@ $(eval $(call PKG_template,LIBXSLT,libxslt,${PKG_VERSION}-${PKG_RELEASE},${PKG_D
 $(eval $(call PKG_template,XSLTPROC,xsltproc,${PKG_VERSION}-${PKG_RELEASE},${PKG_DEPENDS},${PKGSD_XSLTPROC},${PKGSC_XSLTPROC}))
 
 HOST_STYLE:=		auto
-HOST_CONFIGURE_ARGS+=	--without-python
+HOST_CONFIGURE_ARGS+=	--without-python \
+			--without-crypto
 CONFIGURE_ARGS+=	--with-libxml-prefix="${STAGING_TARGET_DIR}/usr" \
 			--with-libxml-include-prefix="${STAGING_TARGET_DIR}/usr/include/libxml2" \
 			--with-libxml-libs-prefix="${STAGING_TARGET_DIR}/usr/lib" \