[gexiv2/wip/0.12] Make it possible to disable python support

[Jens Georg <jensgeorg src gnome org>]

commit 5b81e002507118209c7b9e8488204ada8fec82a8
Author: Jens Georg <mail jensge org>
Date:   Wed May 23 11:23:08 2018 +0200

    Make it possible to disable python support

 meson.build       | 36 ++++++++++++++++++++----------------
 meson_options.txt |  4 ++--
 2 files changed, 22 insertions(+), 18 deletions(-)
---
diff --git a/meson.build b/meson.build
index 4313526..4bd6df1 100644
--- a/meson.build
+++ b/meson.build
@@ -25,27 +25,31 @@ python2_girdir = get_option('python2-girdir')
 python3_girdir = get_option('python3-girdir')
 
 if introspection_available
-  python2 = find_program('python2', required : false)
-  if python2.found()
-    py2gi = run_command(python2, python_gi_test_args)
-    if py2gi.returncode() == 0
-      python2_available = true
-      if python2_girdir == 'auto'
-        python2_girdir = py2gi.stdout().strip()
+  if python2_girdir != 'no'
+    python2 = find_program('python2', required : false)
+    if python2.found()
+      py2gi = run_command(python2, python_gi_test_args)
+      if py2gi.returncode() == 0
+        python2_available = true
+        if python2_girdir == 'auto'
+          python2_girdir = py2gi.stdout().strip()
+        endif
+        install_data('GExiv2.py', install_dir : python2_girdir)
       endif
-      install_data('GExiv2.py', install_dir : python2_girdir)
     endif
   endif
 
-  python3 = find_program('python3', required : false)
-  if python3.found()
-    py3gi = run_command(python3, python_gi_test_args)
-    if py3gi.returncode() == 0
-      python3_available = true
-      if python3_girdir == 'auto'
-        python3_girdir = py3gi.stdout().strip()
+  if python3_girdir != 'no'
+    python3 = find_program('python3', required : false)
+    if python3.found()
+      py3gi = run_command(python3, python_gi_test_args)
+      if py3gi.returncode() == 0
+        python3_available = true
+        if python3_girdir == 'auto'
+          python3_girdir = py3gi.stdout().strip()
+        endif
+        install_data('GExiv2.py', install_dir : python3_girdir)
       endif
-      install_data('GExiv2.py', install_dir : python3_girdir)
     endif
   endif
 endif
diff --git a/meson_options.txt b/meson_options.txt
index 8683518..d21b647 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,5 +1,5 @@
 option('docs', type: 'boolean', value: false, description: 'Enable or disable generating the API reference 
(depends on GTK-Doc)')
 option('introspection', type: 'boolean', value : true, description: 'Enable or disable GObject 
Introspection')
 option('vapi', type: 'boolean', value: true, description: 'Enable or disable generation of vala vapi file')
-option('python2-girdir', type: 'string', value : 'auto', description : 'Installation dir for PyGObject2 
overrides')
-option('python3-girdir', type: 'string', value : 'auto', description : 'Installation dir for PyGObject3 
overrides')
+option('python2-girdir', type: 'string', value : 'auto', description : 'Installation dir for PyGObject2 
overrides (default = auto, no disables python2)')
+option('python3-girdir', type: 'string', value : 'auto', description : 'Installation dir for PyGObject3 
overrides (default = auto, no disables python3)')