[glib] Meson: Use pkgconfig module to generate all pc files

[Xavier Claessens <xclaesse src gnome org>]

commit 3c76114e73fb98a01403b2349a600161d362e5fe
Author: Xavier Claessens <xavier claessens collabora com>
Date:   Mon Dec 11 14:47:04 2017 -0500

    Meson: Use pkgconfig module to generate all pc files
    
    This requires improved pc file generator from meson 0.45.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=788773

 gio/meson.build     | 39 +++++++++++++++++++++++++++++++++++++++
 glib/meson.build    | 14 ++++++++++++++
 gmodule/meson.build | 32 ++++++++++++++++++++++++++++++++
 gobject/meson.build |  9 +++++++++
 gthread/meson.build |  9 +++++++++
 meson.build         | 31 ++++---------------------------
 6 files changed, 107 insertions(+), 27 deletions(-)
---
diff --git a/gio/meson.build b/gio/meson.build
index 7817a4797..280737559 100644
--- a/gio/meson.build
+++ b/gio/meson.build
@@ -794,6 +794,45 @@ libgio = library('gio-2.0',
   link_args : noseh_link_args,
 )
 
+giomodulesdir = get_option('gio_module_dir')
+if giomodulesdir == ''
+  giomodulesdir = join_paths('${libdir}', 'gio', 'modules')
+endif
+
+pkg.generate(libraries : libgio,
+  requires : ['glib-2.0', 'gobject-2.0'],
+  variables : ['bindir=' + join_paths('${prefix}', get_option('bindir')),
+               'giomoduledir=' + giomodulesdir,
+               'glib_compile_schemas=' + join_paths('${bindir}', 'glib-compile-schemas'),
+               'glib_compile_resources=' + join_paths('${bindir}', 'glib-compile-resources'),
+               'gdbus_codegen=' + join_paths('${bindir}', 'gdbus-codegen')],
+  version : glib_version,
+  install_dir : glib_pkgconfigreldir,
+  filebase : 'gio-2.0',
+  name : 'GIO',
+  description : 'glib I/O library',
+)
+
+if host_system == 'windows'
+  pkg.generate(requires : ['gobject-2.0', 'gmodule-no-export-2.0', 'gio-2.0'],
+    subdirs : ['gio-win32-2.0'],
+    version : glib_version,
+    install_dir : glib_pkgconfigreldir,
+    filebase : 'gio-windows-2.0',
+    name : 'GIO Windows specific APIs',
+    description : 'Windows specific headers for glib I/O library',
+  )
+else
+  pkg.generate(requires : ['gobject-2.0', 'gio-2.0'],
+    subdirs : ['gio-unix-2.0'],
+    version : glib_version,
+    install_dir : glib_pkgconfigreldir,
+    filebase : 'gio-unix-2.0',
+    name : 'GIO unix specific APIs',
+    description : 'unix specific headers for glib I/O library',
+  )
+endif
+
 libgio_dep = declare_dependency(link_with : libgio,
   dependencies : [gioenumtypes_dep],
   # We sadly need to export configinc here because everyone includes <gio/*.h>
diff --git a/glib/meson.build b/glib/meson.build
index 9df77b6f9..3b4caf8ce 100644
--- a/glib/meson.build
+++ b/glib/meson.build
@@ -249,6 +249,20 @@ libglib_dep = declare_dependency(
   # We sadly need to export configinc here because everyone includes <glib/*.h>
   include_directories : [configinc, glibinc])
 
+pkg.generate(libraries : libglib,
+  subdirs : ['glib-2.0'],
+  extra_cflags : ['-I${libdir}/glib-2.0/include'],
+  variables : ['bindir=' + join_paths('${prefix}', get_option('bindir')),
+               'glib_genmarshal=' + join_paths('${bindir}', 'glib-genmarshal'),
+               'gobject_query=' + join_paths('${bindir}', 'gobject-query'),
+               'glib_mkenums=' + join_paths('${bindir}', 'glib-mkenums')],
+  version : glib_version,
+  install_dir : glib_pkgconfigreldir,
+  filebase : 'glib-2.0',
+  name : 'GLib',
+  description : 'C Utility Library',
+)
+
 # On Windows, glib needs a spawn helper for g_spawn* API
 if host_system == 'windows'
   if host_machine.cpu_family() == 'x86'
diff --git a/gmodule/meson.build b/gmodule/meson.build
index 03c689e3a..3b57fb477 100644
--- a/gmodule/meson.build
+++ b/gmodule/meson.build
@@ -104,5 +104,37 @@ libgmodule = library('gmodule-2.0',
   dependencies : [libdl_dep, libglib_dep],
   c_args : ['-DG_LOG_DOMAIN="GModule"', '-DG_DISABLE_DEPRECATED'] + glib_hidden_visibility_args)
 
+supported_var = 'gmodule_supported=@0@'.format(g_module_impl != '0')
+
+pkg.generate(libraries : [libgmodule, thread_dep],
+  requires : ['glib-2.0'],
+  version : glib_version,
+  variables : [supported_var],
+  install_dir : glib_pkgconfigreldir,
+  filebase : 'gmodule-no-export-2.0',
+  name : 'GModule',
+  description : 'Dynamic module loader for GLib',
+)
+
+pkg.generate(libraries : [libgmodule],
+  requires : ['glib-2.0'],
+  version : glib_version,
+  variables : [supported_var],
+  install_dir : glib_pkgconfigreldir,
+  filebase : 'gmodule-export-2.0',
+  name : 'GModule',
+  description : 'Dynamic module loader for GLib',
+)
+
+pkg.generate(libraries : [libgmodule],
+  requires : ['glib-2.0'],
+  version : glib_version,
+  variables : [supported_var],
+  install_dir : glib_pkgconfigreldir,
+  filebase : 'gmodule-2.0',
+  name : 'GModule',
+  description : 'Dynamic module loader for GLib',
+)
+
 libgmodule_dep = declare_dependency(link_with : libgmodule,
   include_directories : gmoduleinc)
diff --git a/gobject/meson.build b/gobject/meson.build
index f1ab8fd46..98e306d7f 100644
--- a/gobject/meson.build
+++ b/gobject/meson.build
@@ -71,6 +71,15 @@ libgobject = library('gobject-2.0',
   dependencies : [libintl, libffi_dep, libglib_dep],
   c_args : ['-DG_LOG_DOMAIN="GLib-GObject"', '-DGOBJECT_COMPILATION'] + glib_hidden_visibility_args)
 
+pkg.generate(libraries : libgobject,
+  requires : ['glib-2.0'],
+  version : glib_version,
+  install_dir : glib_pkgconfigreldir,
+  filebase : 'gobject-2.0',
+  name : 'GObject',
+  description : 'GLib Type, Object, Parameter and Signal Library',
+)
+
 libgobject_dep = declare_dependency(link_with : libgobject,
   include_directories : gobjectinc)
 
diff --git a/gthread/meson.build b/gthread/meson.build
index 8d4696d29..3787dba3b 100644
--- a/gthread/meson.build
+++ b/gthread/meson.build
@@ -19,3 +19,12 @@ libgthread = library('gthread-2.0',
   install : true,
   dependencies : [libglib_dep],
   c_args : ['-DG_LOG_DOMAIN="GThread"' ] + glib_hidden_visibility_args)
+
+pkg.generate(libraries : [libgthread, thread_dep],
+  requires : ['glib-2.0'],
+  version : glib_version,
+  install_dir : glib_pkgconfigreldir,
+  filebase : 'gthread-2.0',
+  name : 'GThread',
+  description : 'Thread support for GLib',
+)
diff --git a/meson.build b/meson.build
index 26689a6e4..8e73a0811 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project('glib', 'c', 'cpp',
   version : '2.57.0',
-  meson_version : '>= 0.44.0',
+  meson_version : '>= 0.45.0',
   default_options : [
     'warning_level=1',
     'c_std=gnu89'
@@ -1734,8 +1734,8 @@ if libmount_dep.length() != 0
 endif
 glib_conf.set('GIO_MODULE_DIR', glib_giomodulesdir)
 # FIXME: Missing:
-# @G_MODULE_LIBS@ @COCOA_LIBS@ @CARBON_LIBS@ @G_LIBS_EXTRA@
-# @PCRE_REQUIRES@ @GLIB_EXTRA_CFLAGS@ @G_THREAD_CFLAGS@
+# @COCOA_LIBS@ @CARBON_LIBS@ @G_LIBS_EXTRA@ @GLIB_EXTRA_CFLAGS@
+# @G_MODULE_LDFLAGS@
 
 # Tracing: dtrace
 want_dtrace = get_option('dtrace')
@@ -1781,6 +1781,7 @@ if want_systemtap and enable_dtrace
 endif
 
 
+pkg = import('pkgconfig')
 windows = import('windows')
 subdir('glib')
 subdir('gobject')
@@ -1792,30 +1793,6 @@ if xgettext.found()
 endif
 subdir('tests')
 
-# Configure and install pkg-config files
-pc_files = [
-  'gobject-2.0.pc',
-  'glib-2.0.pc',
-  'gthread-2.0.pc',
-  'gmodule-2.0.pc',
-  'gmodule-export-2.0.pc',
-  'gmodule-no-export-2.0.pc',
-  'gio-2.0.pc',
-]
-if host_system == 'windows'
-  pc_files += ['gio-windows-2.0.pc']
-else
-  pc_files += ['gio-unix-2.0.pc']
-endif
-
-foreach pc : pc_files
-  configure_file(input : pc + '.in',
-    install : true,
-    install_dir : glib_pkgconfigreldir,
-    output : pc,
-    configuration : glib_conf)
-endforeach
-
 # NOTE: We skip glib-zip.in because the filenames it assumes don't match ours
 
 # Install glib-gettextize executable, if a UNIX-style shell is found