meson: add sodium option

Allow us to pick between the built-in libsodium, use the one from the
system or disable the plugin.

cargo_wrapper.py

@@ -7,8 +7,8 @@ import shutil
 import subprocess
 import sys
 
-command, meson_build_dir, meson_current_source_dir, meson_build_root, target, exclude = sys.argv[
-    1:7]
+command, meson_build_dir, meson_current_source_dir, meson_build_root, target, exclude, extra_env = sys.argv[
+    1:8]
 
 cargo_target_dir = os.path.join(meson_build_dir, 'target')
 
@@ -26,9 +26,14 @@ pkg_config_path.append(os.path.join(
     meson_build_root, 'subprojects', 'gst-plugins-base', 'pkgconfig'))
 env['PKG_CONFIG_PATH'] = ':'.join(pkg_config_path)
 
+if len(extra_env) > 0:
+    for e in extra_env.split(','):
+        k, v = e.split(':')
+        env[k] = v
+
 if command == 'build':
     # cargo build
-    ext = sys.argv[7]
+    ext = sys.argv[8]
     cargo_cmd = ['cargo', 'build', '--all-targets',
                  '--manifest-path', os.path.join(
                      meson_current_source_dir, 'Cargo.toml'),

meson.build

@@ -33,12 +33,12 @@ plugins_rep = {
   'gst-plugin-rav1e': 'libgstrav1e',
   'gst-plugin-reqwest': 'libgstreqwest',
   'gst-plugin-rusoto': 'libgstrusoto',
-  'gst-plugin-sodium': 'libgstsodium',
   'gst-plugin-threadshare': 'libgstthreadshare',
   'gst-plugin-togglerecord': 'libgsttogglerecord',
 }
 
 exclude = []
+extra_env = {}
 
 if dependency('dav1d', required : get_option('dav1d')).found()
   plugins_rep += {'gst-plugin-dav1d' : 'libgstrsdav1d'}
@@ -46,6 +46,17 @@ else
   exclude += ['gst-plugin-dav1d']
 endif
 
+sodium = get_option ('sodium')
+if sodium == 'system'
+  dependency('libsodium')
+  plugins_rep += {'gst-plugin-sodium': 'libgstsodium'}
+  extra_env += {'SODIUM_USE_PKG_CONFIG': '1'}
+elif sodium == 'built-in'
+  plugins_rep += {'gst-plugin-sodium': 'libgstsodium'}
+else
+  exclude += ['gst-plugin-sodium']
+endif
+
 output = []
 
 foreach p, lib : plugins_rep
@@ -83,6 +94,13 @@ endforeach
 
 exclude = ','.join(exclude)
 
+# serialize extra_env
+extra_env_list = []
+foreach key, value : extra_env
+  extra_env_list += key + ':' + value
+endforeach
+extra_env_str = ','.join(extra_env_list)
+
 # Always build the target so we don't have to list all source files as input
 rs_plugins = custom_target('gst-plugins-rs',
   build_by_default: true,
@@ -98,6 +116,7 @@ rs_plugins = custom_target('gst-plugins-rs',
     meson.build_root(),
     target,
     exclude,
+    extra_env_str,
     ext])
 
 # FIXME: raises a warning as the target has multiple outputs and meson will use
@@ -112,5 +131,6 @@ test('tests',
     meson.current_source_dir(),
     meson.build_root(),
     target,
-    exclude],
+    exclude,
+    extra_env_str],
   timeout: 600)

meson_options.txt

@@ -1 +1,4 @@
 option('dav1d', type : 'feature', value : 'auto', description : 'Build dav1d plugin')
+option('sodium', type : 'combo',
+    choices : ['system', 'built-in', 'disabled'], value : 'built-in',
+    description : 'Weither to use libsodium from the system or the built-in version from the sodiumoxide crate')