Add Meson build system

Signed-off-by: Félix Piédallu <felix@piedallu.me>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

1 files changed, 118 insertions, 0 deletions

diff --git a/meson_post_install.py b/meson_post_install.py
new file mode 100755
index 00000000..78133103
--- /dev/null
+++ b/meson_post_install.py
@@ -0,0 +1,118 @@
+#!/usr/bin/env python3
+# Copyright © 2019-2020 Salamandar <felix@piedallu.me>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import os, sys, stat
+from pathlib import Path
+import shlex, subprocess, json
+
+meson = shlex.split(os.environ.get('MESONINTROSPECT', ''))
+introspection = json.loads(subprocess.check_output(meson + ['-a']).decode())
+build_options = introspection['buildoptions']
+targets = introspection['targets']
+
+def get_option(name):
+    for i in build_options:
+        if i['name'] == name:
+            return i['value']
+    return None
+
+def get_target(name):
+    for i in targets:
+        if i['name'] == name:
+            return i
+    return None
+
+destdir = Path(os.getenv('DESTDIR')) if 'DESTDIR' in os.environ else None
+prefix = Path(get_option('prefix'))
+destdir_prefix = Path(os.getenv('MESON_INSTALL_DESTDIR_PREFIX'))
+
+def to_destdir(path):
+    path_abs = prefix / path
+    if destdir:
+        path_rel_root = path_abs.relative_to(path_abs.anchor)
+        path_final = destdir / path_rel_root
+        return path_final
+    else:
+        return path_abs
+
+###############################################################################
+
+# Define paths here
+abs_libdir = destdir_prefix / get_option('libdir')
+dbus_data_dir = destdir_prefix / get_option('datadir') / 'dbus-1'
+
+platform_unix = sys.argv[1].lower() == 'true'
+relocation = sys.argv[2].lower() == 'true'
+
+def post_install_data():
+    (dbus_data_dir / 'session.d').mkdir(parents=True, exist_ok=True)
+    (dbus_data_dir / 'services').mkdir(parents=True, exist_ok=True)
+    (dbus_data_dir / 'session.d').mkdir(parents=True, exist_ok=True)
+
+    localstatedir = Path(get_option('localstatedir'))
+    if destdir:
+        localstatedir = destdir / localstatedir.relative_to(localstatedir.anchor)
+    if platform_unix:
+        (localstatedir / 'run' / 'dbus').mkdir(parents=True, exist_ok=True)
+        (dbus_data_dir / 'system.d').mkdir(parents=True, exist_ok=True)
+        (dbus_data_dir / 'system-services').mkdir(parents=True, exist_ok=True)
+
+def post_install_relocation():
+    # Edit pkg-config file to replace the prefix
+    #
+    # TODO: Meson >=0.63 has a new feature, -Dpkgconfig.relocatable=true.
+
+    pc_filepath = next(
+        v for (k,v) in introspection['installed'].items() if k.endswith('.pc')
+    )
+    # Find the really installed path
+    pc_filepath = to_destdir(pc_filepath)
+
+    with open(pc_filepath, 'r') as pcfile:
+        lines = pcfile.readlines()
+    with open(pc_filepath, 'w') as pcfile:
+        for line in lines:
+            if line.startswith('prefix='):
+                line = 'prefix=${pcfiledir}/../..\n'
+            pcfile.write(line)
+
+def post_install_exe():
+    # Setuid, chmod and chown for dbus-daemon-launch-helper
+    daemon_launch_helper = get_target('dbus-daemon-launch-helper')
+    if daemon_launch_helper:
+        import grp
+        exe_name = os.path.basename(daemon_launch_helper['install_filename'][0])
+        exe_path = abs_libdir / 'dbus-1.0' / exe_name
+        dbus_user = get_option('dbus_user')
+        if os.getuid() == 0:
+            os.chmod(exe_path, stat.S_ISUID | stat.S_IXUSR | stat.S_IXGRP)
+            os.chown(exe_path, 0, grp.getgrnam(dbus_user).gr_gid)
+        else:
+            print('Not installing {0} binary setuid!'.format(exe_path))
+            print('You\'ll need to manually set permissions to root:{0} and permissions 4750'
+                .format(dbus_user)
+            )
+
+
+if __name__ == "__main__":
+    post_install_data()
+    post_install_relocation()
+    post_install_exe()