[libgee] gee/Makefile.am: include Makefile.introspection

[Rico Tzschichholz <ricotz src gnome org>]

commit 7f93f22ad01c69e3d8b8e7adad49e920fdfee36c
Author: Fabrice Fontaine <fontaine fabrice gmail com>
Date:   Sat Nov 20 23:57:33 2021 +0100

    gee/Makefile.am: include Makefile.introspection
    
    Include Makefile.introspection instead of using a custom rule which will
    result in the following build failure when cross-compiling on buildroot
    because of missing --includedir:
    
    
/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/../riscv32-buildroot-linux-gnu/sysroot/usr/bin/g-ir-compiler
 -l `/usr/bin/sed -nE "s/^dlname='([A-Za-z0-9.+-]+)'/\1/p" libgee-0.8.la` -o Gee-0.8.typelib Gee-0.8.gir 
libgee-0.8.la
    Could not find GIR file 'GObject-2.0.gir'; check XDG_DATA_DIRS or use --includedir
    error parsing file Gee-0.8.gir: Failed to parse included gir GObject-2.0
    
    Fixes:
     - http://autobuild.buildroot.org/results/884faa0f84c8dc43ed1ca6cde9caf21c731a4b35
    
    Signed-off-by: Fabrice Fontaine <fontaine fabrice gmail com>

 gee/Makefile.am | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/gee/Makefile.am b/gee/Makefile.am
index 5634bcb..e0d950e 100644
--- a/gee/Makefile.am
+++ b/gee/Makefile.am
@@ -167,7 +167,8 @@ INTROSPECTION_COMPILER_ARGS= \
        -l $(libgee_dlname)
 Gee-0.8.gir: libgee_0_8_la_vala.stamp
 Gee-0.8.typelib: Gee-0.8.gir libgee-0.8.la
-       @INTROSPECTION_COMPILER@ $(INTROSPECTION_COMPILER_ARGS) -o $@ $^
+
+-include $(INTROSPECTION_MAKEFILE)
 endif
 
 MOSTLYCLEANFILES = \