[gnome-online-accounts] build: Do not hardcode path to libtool

[Debarshi Ray <debarshir src gnome org>]

commit e4a875d2f2b0d4178fd909c181631c5c760edc17
Author: Antoine Jacoutot <ajacoutot gnome org>
Date:   Fri Apr 18 14:11:31 2014 +0200

    build: Do not hardcode path to libtool
    
    Some OSes ship with their own libtool and Autotools can use the
    LIBTOOL env var to specify the path to libtool. So make it possible to
    use this variable as the libtool path for the introspection scanner as
    well. This fixes the build on at least OpenBSD.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=726570

 src/goa/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/goa/Makefile.am b/src/goa/Makefile.am
index 8334a79..9302966 100644
--- a/src/goa/Makefile.am
+++ b/src/goa/Makefile.am
@@ -134,7 +134,7 @@ Goa-1.0.gir: $(libgoa_1_0_la_SOURCES)
                --pkg=gobject-2.0                               \
                --pkg=gio-2.0                                   \
                --pkg-export=goa-1.0                            \
-               --libtool=$(top_builddir)/libtool               \
+               --libtool="$(LIBTOOL)"                          \
                --c-include='goa/goa.h'                         \
                 -I$(top_srcdir)/src                            \
                 -I$(top_srcdir)/src/goa                                \