[libgit2-glib/wip/inigomartinez/meson: 13/13] meson: Add python support

[Iñigo Martínez <inigomartinez src gnome org>]

commit c4fe8e510843ba083f5b442b75ae4950c0839a58
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Fri Jan 19 22:07:07 2018 +0100

    meson: Add python support
    
    autotools features optional python support, which makes some checks
    regarding python and pygobject versions and compiles the installed
    python files.
    
    This patch adds the equivalent python support in meson.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=792699

 libgit2-glib/meson.build |    4 ++++
 meson.build              |   13 +++++++++++++
 meson_options.txt        |    1 +
 meson_post_install.py    |   14 ++++++++++++++
 4 files changed, 32 insertions(+), 0 deletions(-)
---
diff --git a/libgit2-glib/meson.build b/libgit2-glib/meson.build
index c0f68de..efd930c 100644
--- a/libgit2-glib/meson.build
+++ b/libgit2-glib/meson.build
@@ -229,6 +229,10 @@ libgit2_glib_dep = declare_dependency(link_with: libgit2_glib,
                                       # Everything that uses libgit2-glib needs this built to compile
                                       sources: enum_types[1])
 
+if enable_python
+  install_data('Ggit.py', install_dir: join_paths(python.sysconfig_path('purelib'), 'gi', 'overrides'))
+endif
+
 if enable_gir
   libgit2_glib_gir = gnome.generate_gir(libgit2_glib,
                                         sources: headers + sources,
diff --git a/meson.build b/meson.build
index fc6502c..bdb843a 100644
--- a/meson.build
+++ b/meson.build
@@ -150,6 +150,19 @@ if enable_ssh
   assert(cc.compiles(libgit2_ssh_src, name: 'libgit2 supports SSH'), 'libgit2 ssh support was requested, but 
not found. Use -Dssh=false to build without it.')
 endif
 
+# Check for python
+enable_python = get_option('python')
+if enable_python
+  python = import('python3')
+
+  python_req = '3.2.3'
+
+  dependency('pygobject-3.0', version: '>= 3.0.0')
+  assert(python.language_version().version_compare('>= ' + python_req), 'python support was requested, but 
version >= ' + python_req + ' not found.')
+
+  meson.add_install_script('meson_post_install.py', libgit2_glib_libdir)
+endif
+
 gnome = import('gnome')
 pkg = import('pkgconfig')
 
diff --git a/meson_options.txt b/meson_options.txt
index 896c998..90b3188 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,4 +1,5 @@
 option('gtk_doc', type: 'boolean', value: false, description: 'Enable generating the API reference (depends 
on GTK-Doc)')
 option('introspection', type: 'boolean', value: true, description: 'Enable GObject Introspection')
+option('python', type: 'boolean', value: true, description: 'Build with python support')
 option('ssh', type: 'boolean', value: true, description: 'Build with libgit2 ssh support')
 option('vapi', type: 'boolean', value: true, description: 'Build Vala bindings')
diff --git a/meson_post_install.py b/meson_post_install.py
new file mode 100644
index 0000000..8aff82c
--- /dev/null
+++ b/meson_post_install.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+
+import os
+import subprocess
+import sys
+
+if not os.environ.get('DESTDIR'):
+  libdir = sys.argv[1]
+
+  print('Byte-compiling python modules...')
+  subprocess.call(['python', '-m', 'compileall', '-f', '-q', libdir])
+
+  print('Byte-compiling python modules (optimized versions) ...')
+  subprocess.call(['python', '-O', '-m', 'compileall', '-f', '-q', libdir])