[tracker] build: Specify include dir to g-ir-compiler custom target

[Carlos Garnacho <carlosg src gnome org>]

commit 0c0750be2fa7bb5d26a06c60d0028d6b0974a7fe
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed May 1 11:32:24 2019 +0200

    build: Specify include dir to g-ir-compiler custom target
    
    Try to help it find the Tracker-2.0.gir target it depends upon.
    The command is given a relative path from the build root, so add
    it.
    
    Hopefully fixes:
    http://build.gnome.org/continuous/buildmaster/builds/2019/05/01/5/build/log-tracker.txt

 src/libtracker-sparql-backend/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/libtracker-sparql-backend/meson.build b/src/libtracker-sparql-backend/meson.build
index 8f4a9e4a0..2c267c32c 100644
--- a/src/libtracker-sparql-backend/meson.build
+++ b/src/libtracker-sparql-backend/meson.build
@@ -62,7 +62,7 @@ tracker_sparql_gir = custom_target('tracker-sparql-gir',
     install_dir: gir_dir)
 
 tracker_sparql_typelib = custom_target('tracker-sparql-typelib',
-    command: [g_ir_compiler, '--output', '@OUTPUT@', '@INPUT@'],
+    command: [g_ir_compiler, '--includedir', build_root, '--output', '@OUTPUT@', '@INPUT@'],
     input: tracker_sparql_gir,
     output: 'Tracker-@0@.typelib'.format(tracker_api_version),
     install: true,