openssl: look for headers/libs in XBPS_MASTERDIR for the bootstrap build.

srcpkgs/openssl/template

@@ -41,6 +41,11 @@ do_configure() {
 	sed -i '/^"linux-elf/s/-DTERMIO/-DTERMIOS/' Configure
 	sed -i 's/defined(linux)/0/' crypto/ui/ui_openssl.c
 
+	if [ -z "$CHROOT_READY" ]; then
+		CFLAGS+=" -I${XBPS_MASTERDIR}/usr/include"
+		LDFLAGS+=" -L${XBPS_MASTERDIR}/usr/lib"
+	fi
+
 	./Configure --prefix=/usr --openssldir=/etc/ssl --libdir=lib \
 		shared zlib enable-md2 threads ${_opts} \
 		${_target} -Wa,--noexecstack "${CFLAGS}"