[gjs] Fix building Regress-1.0.gir with cairo disabled

[Owen Taylor <otaylor src gnome org>]

commit c6e0ef5b7cae8ac9d6cc79c54dded79869e5346e
Author: Owen W. Taylor <otaylor fishsoup net>
Date:   Fri May 2 17:34:25 2014 -0400

    Fix building Regress-1.0.gir with cairo disabled
    
    We need to define GI_DISABLE_CAIRO when scanning to create the GIR,
    not just when compiling the library, otherwise we'll fail because
    cairo-gobject.h is not found.

 Makefile-insttest.am |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/Makefile-insttest.am b/Makefile-insttest.am
index b4f8d17..59d76e9 100644
--- a/Makefile-insttest.am
+++ b/Makefile-insttest.am
@@ -69,6 +69,9 @@ Regress-1.0.gir: libregress.la
 Regress_1_0_gir_LIBS = libregress.la
 Regress_1_0_gir_FILES = $(nodist_libregress_la_SOURCES)
 Regress_1_0_gir_SCANNERFLAGS = --warn-all --warn-error $(libregress_scannerflags_includes)
+if !ENABLE_CAIRO
+Regress_1_0_gir_CFLAGS = -D_GI_DISABLE_CAIRO
+endif
 TEST_INTROSPECTION_GIRS += Regress-1.0.gir
 
 WarnLib-1.0.gir: libwarnlib.la