[libgepub/libsoup3: 1/3] Make gepub-widget configurable

[Daniel Garcia Moreno <danigm src gnome org>]

commit 7634e86936ff27396ffa6b68ad7ff0b60e4fbec4
Author: Daniel García Moreno <dani danigm net>
Date:   Tue Aug 30 09:57:52 2022 +0200

    Make gepub-widget configurable
    
    This makes the WebKit2 dep optional so the library can be used just to
    read epubs and do not require the whole webkit when it's not needed.

 libgepub/gepub.h     |  5 +++++
 libgepub/meson.build | 12 +++++++++---
 meson.build          | 19 ++++++++++++++++---
 meson_options.txt    |  1 +
 4 files changed, 31 insertions(+), 6 deletions(-)
---
diff --git a/libgepub/gepub.h b/libgepub/gepub.h
index a8f7fd2..aae56b4 100644
--- a/libgepub/gepub.h
+++ b/libgepub/gepub.h
@@ -1,9 +1,14 @@
 #ifndef _GEPUB__H_
 #define _GEPUB__H_
 
+#include <config.h>
+
 #include "gepub-archive.h"
 #include "gepub-text-chunk.h"
 #include "gepub-doc.h"
+
+#ifdef GEPUB_WIDGET_ENABLED
 #include "gepub-widget.h"
+#endif
 
 #endif
diff --git a/libgepub/meson.build b/libgepub/meson.build
index 65c8463..d8b99ea 100644
--- a/libgepub/meson.build
+++ b/libgepub/meson.build
@@ -2,7 +2,6 @@ headers = files(
   'gepub-archive.h',
   'gepub-doc.h',
   'gepub-text-chunk.h',
-  'gepub-widget.h',
   'gepub.h'
 )
 
@@ -18,9 +17,13 @@ sources = files(
   'gepub-doc.c',
   'gepub-text-chunk.c',
   'gepub-utils.c',
-  'gepub-widget.c'
 )
 
+if get_option('widget')
+  sources += files('gepub-widget.c')
+  headers += files('gepub-widget.h')
+endif
+
 symbol_map = join_paths(meson.current_source_dir(), 'gepub.map')
 
 test_ldflag = '-Wl,--version-script,' + symbol_map
@@ -69,9 +72,12 @@ if get_option('introspection') and get_option('default_library') == 'shared'
   gir_incs = [
     'GObject-2.0',
     'libxml2-2.0',
-    'WebKit2-4.1'
   ]
 
+  if get_option('widget')
+    gir_incs += ['WebKit2-4.1']
+  endif
+
   gir_extra_args = '--warn-all'
 
   gir_dir = join_paths(gepub_datadir, '@0@-@1@'.format('gir', gepub_gir_version))
diff --git a/meson.build b/meson.build
index c868167..221c29e 100644
--- a/meson.build
+++ b/meson.build
@@ -31,7 +31,6 @@ libversion = '@0@.@1@.@2@'.format(soversion, current, revision)
 cc = meson.get_compiler('c')
 
 gepub_deps = [
-  dependency('webkit2gtk-4.1'),
   dependency('libsoup-3.0'),
   dependency('glib-2.0'),
   dependency('gobject-2.0'),
@@ -40,15 +39,29 @@ gepub_deps = [
   dependency('libarchive')
 ]
 
+if get_option('widget')
+  webkit2gtk = dependency('webkit2gtk-4.1')
+  gepub_deps += [webkit2gtk]
+endif
+
 gnome = import('gnome')
 pkg = import('pkgconfig')
 
 top_inc = include_directories('.')
 
 subdir('libgepub')
-subdir('tests')
+
+if get_option('widget')
+  subdir('tests')
+endif
+
+config_h = configuration_data()
+
+if get_option('widget')
+  config_h.set('GEPUB_WIDGET_ENABLED', 1)
+endif
 
 configure_file(
   output: 'config.h',
-  configuration: configuration_data()
+  configuration: config_h,
 )
diff --git a/meson_options.txt b/meson_options.txt
index d33e9ec..bb85878 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1 +1,2 @@
 option('introspection', type: 'boolean', value: true, description: 'Enable GObject Introspection (depends on 
GObject)')
+option('widget', type: 'boolean', value: true, description: 'Build with GepubWidget based on Webkit')