tjh.dev
1diff --git a/mesonbuild/modules/gnome.py b/mesonbuild/modules/gnome.py
2index 1c6952df7..9466a0b7d 100644
3--- a/mesonbuild/modules/gnome.py
4+++ b/mesonbuild/modules/gnome.py
5@@ -923,6 +923,16 @@ class GnomeModule(ExtensionModule):
6 if fatal_warnings:
7 scan_command.append('--warn-error')
8
9+ if len(set(girtarget.get_custom_install_dir()[0] for girtarget in girtargets if girtarget.get_custom_install_dir())) > 1:
10+ raise MesonException('generate_gir tries to build multiple libraries with different install_dir at once: {}'.format(','.join([str(girtarget) for girtarget in girtargets])))
11+
12+ if girtargets[0].get_custom_install_dir():
13+ fallback_libpath = girtargets[0].get_custom_install_dir()[0]
14+ else:
15+ fallback_libpath = None
16+ if fallback_libpath is not None and isinstance(fallback_libpath, str) and len(fallback_libpath) > 0 and fallback_libpath[0] == "/":
17+ scan_command += ['--fallback-library-path=' + fallback_libpath]
18+
19 generated_files = [f for f in libsources if isinstance(f, (GeneratedList, CustomTarget, CustomTargetIndex))]
20
21 scan_target = self._make_gir_target(state, girfile, scan_command, generated_files, depends, kwargs)