[gobject-introspection/wip/tingping/meson] Build glib gir

[Patrick Griffis <pgriffis src gnome org>]

commit a089e10553792c984bc2d4ff9ac9d09076e99460
Author: Patrick Griffis <tingping tingping se>
Date:   Mon Oct 23 13:16:57 2017 -0400

    Build glib gir

 gir/meson.build             |   53 +++++++++++++++++++++++++++++++++++++++++++
 tools/g-ir-tool-template.in |    4 +++
 tools/meson.build           |    5 +++-
 3 files changed, 61 insertions(+), 1 deletions(-)
---
diff --git a/gir/meson.build b/gir/meson.build
index 257804b..710c52d 100644
--- a/gir/meson.build
+++ b/gir/meson.build
@@ -47,3 +47,56 @@ foreach gir : gir_files
     install_dir: typelibdir,
   )
 endforeach
+
+glib_includedir = join_paths(gobject_dep.get_pkgconfig_variable('includedir'), 'glib-2.0')
+glib_libincludedir = join_paths(gobject_dep.get_pkgconfig_variable('libdir'), 'glib-2.0/include')
+glib_headers = [
+  'glib-2.0.c',
+  glib_libincludedir + '/glibconfig.h',
+  glib_includedir + '/gobject/glib-types.h',
+]
+
+script = '''
+import glob
+print(','.join((f for f in glob.glob("@0@/glib/*.h") if not f.endswith("glib-autocleanups.h"))))
+'''.format(glib_includedir)
+ret = run_command(py3.find_python(), '-c', script)
+if ret.returncode() != 0
+  error('Failed to get glib headers')
+endif
+glib_headers += ret.stdout().strip().split(',')
+
+custom_target('gir-glib',
+  input: glib_headers,
+  output: 'GLib-2.0.gir',
+  install: true,
+  install_dir: girdir,
+  command: [
+    find_program('env'),
+    'UNINSTALLED_INTROSPECTION_SRCDIR=' + meson.source_root(),
+    'UNINSTALLED_INTROSPECTION_BUILDDIR=' + meson.build_root(),
+    girscanner,
+    '--output=@OUTPUT@',
+    '--warn-all',
+    '--no-libtool',
+    '--external-library',
+    '--reparse-validate',
+    '--identifier-prefix=G',
+    '--symbol-prefix=g',
+    '--symbol-prefix=glib',
+    '--c-include=glib.h',
+    '--namespace=GLib',
+    '--nsversion=2.0',
+    '--pkg=glib-2.0',
+    '--library=gobject-2.0',
+    '--library=glib-2.0',
+    '--cflags-begin',
+    '-I' + glib_includedir,
+    '-I' + glib_libincludedir,
+    '-DGLIB_COMPILATION',
+    '-D__G_I18N_LIB_H__',
+    '-DGETTEXT_PACKAGE=Dummy',
+    '--cflags-end',
+    '@INPUT@',
+  ]
+)
diff --git a/tools/g-ir-tool-template.in b/tools/g-ir-tool-template.in
index edc68a4..2eac21f 100755
--- a/tools/g-ir-tool-template.in
+++ b/tools/g-ir-tool-template.in
@@ -62,5 +62,9 @@ if srcdir is not None:
 
 sys.path.insert(0, pylibdir)
 
+builddir = os.getenv('UNINSTALLED_INTROSPECTION_BUILDDIR', None)
+if builddir is not None:
+    sys.path.insert(0, os.path.join(builddir, 'giscanner'))
+
 from giscanner.@TOOL_MODULE@ import @TOOL_FUNCTION@
 sys.exit(@TOOL_FUNCTION@(sys.argv))
diff --git a/tools/meson.build b/tools/meson.build
index 7f32cbb..73817ec 100644
--- a/tools/meson.build
+++ b/tools/meson.build
@@ -10,6 +10,7 @@ if get_option('doctool')
   tools += [['g-ir-doc-tool', 'docmain', 'doc_main']]
 endif
 
+tool_output = []
 foreach tool : tools
   tools_conf = configuration_data()
   tools_conf.set('libdir', libdir_abs)
@@ -18,7 +19,7 @@ foreach tool : tools
 
   tools_conf.set('TOOL_MODULE', tool[1])
   tools_conf.set('TOOL_FUNCTION', tool[2])
-  configure_file(
+  tool_output += configure_file(
     input: 'g-ir-tool-template.in',
     output: tool[0],
     configuration: tools_conf,
@@ -27,6 +28,8 @@ foreach tool : tools
   )
 endforeach
 
+girscanner = tool_output[0]
+
 gircompiler = executable('g-ir-compiler', 'compiler.c',
   c_args: '-DGIREPO_DEFAULT_SEARCH_PATH="@0"'.format(libdir_abs),
   dependencies: [