From 2c31944eabbb42a86a4ddaa2998a3b100a13138d Mon Sep 17 00:00:00 2001
From: Sascha Silbe <x-yo17@se-silbe.de>
Date: Fri, 8 Jun 2018 13:55:10 +0200
Subject: [PATCH] Relocate the repository directory for native builds

Instead of hard-coding GOBJECT_INTROSPECTION_LIBDIR when
gobject-introspection is built, use dladdr() to determine where
GOBJECT_INTROSPECTION_LIBDIR is and use that path to calculate the
repository directory.

This fixes gobject-introspection-native accessing paths across build
directories (e.g. if the build directories use the same shared state
cache or sstate mirror).

Upstream-Status: Inappropriate
Signed-off-by: Sascha Silbe <x-yo17@se-silbe.de>

---
 girepository/girepository.c | 15 +++++++++++++--
 girepository/meson.build    |  2 +-
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/girepository/girepository.c b/girepository/girepository.c
index a0754f4..2d456f9 100644
--- a/girepository/girepository.c
+++ b/girepository/girepository.c
@@ -21,6 +21,8 @@
  * Boston, MA 02111-1307, USA.
  */
 
+#define _GNU_SOURCE
+
 #include "config.h"
 
 #include <stdio.h>
@@ -34,6 +36,8 @@
 #include "gitypelib-internal.h"
 #include "girepository-private.h"
 
+#include <dlfcn.h>
+
 /**
  * SECTION:girepository
  * @short_description: GObject Introspection repository manager
@@ -215,9 +219,16 @@ init_globals (void)
           g_free (custom_dirs);
         }
 
-      libdir = GOBJECT_INTROSPECTION_LIBDIR;
+      Dl_info gi_lib_info;
 
-      typelib_dir = g_build_filename (libdir, "girepository-1.0", NULL);
+      if (dladdr (g_irepository_get_default, &gi_lib_info)) {
+        char *libdir = g_path_get_dirname (gi_lib_info.dli_fname);
+        typelib_dir = g_build_filename (libdir, "girepository-1.0", NULL);
+        g_free (libdir);
+      } else {
+        libdir = GOBJECT_INTROSPECTION_LIBDIR;
+        typelib_dir = g_build_filename (libdir, "girepository-1.0", NULL);
+      }
 
       typelib_search_path = g_slist_prepend (typelib_search_path, typelib_dir);
 
diff --git a/girepository/meson.build b/girepository/meson.build
index 786749a..15cf2a9 100644
--- a/girepository/meson.build
+++ b/girepository/meson.build
@@ -45,7 +45,7 @@ girepo_internals_lib = static_library('girepository-internals',
   ],
   c_args: gi_hidden_visibility_cflags + custom_c_args,
   include_directories : configinc,
-  dependencies: [girepo_gthash_dep, libffi_dep],
+  dependencies: [girepo_gthash_dep, libffi_dep, cc.find_library('dl')],
 )
 
 girepo_internals_dep = declare_dependency(
