libcmis: use boost.m4 as intended

Call BOOST_REQUIRE before the other BOOST_.. commands, as
described on https://github.com/tsuna/boost.m4.
This generates required CFLAGS, LDFLAGS, LIBS etc.

srcpkgs/libcmis/template

@@ -1,7 +1,7 @@
 # Template file for 'libcmis'
 pkgname=libcmis
 version=0.5.0
-revision=4
+revision=5
 build_style=gnu-configure
 hostmakedepends="pkg-config libtool automake"
 makedepends="libcurl-devel libxml2-devel libcppunit-devel boost-devel"
@@ -13,14 +13,14 @@ distfiles="${SOURCEFORGE_SITE}/$pkgname/$pkgname-${version}.tar.gz"
 checksum=a87e02913dee3ee659db5abf6d7dafcfcd85dd4b24bf4389d8d4afe8c8dcf9b6
 configure_args="--without-man"
 
-do_configure() {
+pre_configure() {
 	# Use newer boost.m4 from https://github.com/tsuna/boost.m4
 	# which fixes the build with gcc6
 	cp -v ${FILESDIR}/boost.m4 m4
+	# Insert the new command BOOST_REQUIRE to define boost.m4 functions
+	sed -i configure.ac \
+		-e '/m4_pattern_allow(\[\^BOOST_\])/a BOOST_REQUIRE'
 	autoreconf -fi
-	LIBS="-L${XBPS_CROSS_BASE}/usr/lib -lboost_system \
-		-lboost_date_time -lboost_program_options" \
-		./configure ${configure_args}
 }
 
 libcmis-devel_package() {