[libgweather/ebassi/libsoup3: 2/6] build: Include libsoup api version in pkg-config

[Emmanuele Bassi <ebassi src gnome org>]

commit 77c6e3cdab5f27e596c49fbe29f0b1a0617a3d1d
Author: Patrick Griffis <pgriffis igalia com>
Date:   Tue Sep 21 11:45:42 2021 -0500

    build: Include libsoup api version in pkg-config

 libgweather/meson.build | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)
---
diff --git a/libgweather/meson.build b/libgweather/meson.build
index ed9b2ab8..19774066 100644
--- a/libgweather/meson.build
+++ b/libgweather/meson.build
@@ -97,9 +97,20 @@ configure_file(
 if get_option('soup2')
   libsoup_name = 'libsoup-2.4'
   libsoup_req_version = '>= 2.44.0'
+  libsoup_api_version = '2.4'
 else
   libsoup_name = 'libsoup-3.0'
   libsoup_req_version = '>= 2.99.2'
+  libsoup_api_version = '3.0'
+endif
+
+geocode_glib_dep = dependency('geocode-glib-1.0')
+geocode_soup_version = geocode_glib_dep.get_pkgconfig_variable('soupapiversion')
+if geocode_soup_version == ''
+  geocode_soup_version = '2.4' # Pre libsoup3 support
+endif
+if geocode_soup_version != libsoup_api_version
+  error('geocode-glib was built against a different API of libsoup. @0@ instead of 
@1@.'.format(geocode_soup_version, libsoup_api_version))
 endif
 
 libsoup_dep = dependency(libsoup_name, version: libsoup_req_version)
@@ -108,7 +119,7 @@ deps_libgweather = [
   dependency('gio-2.0', version: glib_req_version),
   libsoup_dep,
   dependency('libxml-2.0', version: libxml_req_version),
-  dependency('geocode-glib-1.0'),
+  geocode_glib_dep,
 
   c_compiler.find_library('m', required: false),
 ]
@@ -249,6 +260,9 @@ pkgconfig.generate(
     'libxml-2.0',
     'geocode-glib-1.0',
   ],
+  variables: [
+    'soupapiversion=' + libsoup_api_version,
+  ]
 )
 
 if get_option('tests')