glibc: prepare to be a bootstrap pkg; supersedes chroot-glibc.

srcpkgs/glibc/template

@@ -9,7 +9,12 @@ license="GPL-2, LGPL-2.1, BSD"
 distfiles="http://ftp.gnu.org/gnu/glibc/glibc-${version}.tar.xz"
 checksum=2cb4e1e381928f1e5e55e71ab1ba8e0ea7ede75ff9709770435bfd018ea257a3
 
-hostmakedepends="bison perl"
+bootstrap=yes
+
+if [ "$CHROOT_READY" ]; then
+	hostmakedepends="bison perl"
+fi
+
 # Force creation of -dbg pkg, required by valgrind.
 force_debug_pkgs=yes
 
@@ -34,12 +39,12 @@ do_configure() {
 		_floatabi="--with-float=hard"
 	fi
 	if [ "$CROSS_BUILD" ]; then
-		_headers="--with-headers=$XBPS_CROSS_BASE/include"
+		_headers="--with-headers=${XBPS_CROSS_BASE}/usr/include"
 	else
-		_headers="--with-headers=/usr/include"
+		_headers="--with-headers=${XBPS_MASTERDIR}/usr/include"
 	fi
 
-	../configure ${configure_args} \
+	SHELL=/bin/bash ../configure ${configure_args} \
 		--bindir=/usr/bin --sbindir=/usr/sbin \
 		--enable-add-ons=ports,nptl,libidn --enable-obsolete-rpc \
 		--enable-multi-arch --enable-bind-now \