Be able to create a wrapper for java.

Android is a specific wrapper.
Java is another one.

meson.build

@@ -5,13 +5,19 @@ project('kiwix-lib', 'cpp',
 
 compiler = meson.get_compiler('cpp')
 
-static_deps = get_option('android') or get_option('default_library') == 'static'
-if get_option('android')
+wrapper = get_option('wrapper')
+
+static_deps = 'android' in wrapper or 'java' in wrapper or get_option('default_library') == 'static'
+if 'android' in wrapper
   extra_libs = ['-llog']
 else
   extra_libs = []
 endif
 
+if 'java' in wrapper
+  add_languages('java')
+endif
+
 thread_dep = dependency('threads')
 libicu_dep = dependency('icu-i18n', static:static_deps)
 libzim_dep = dependency('libzim', version : '>=5.0.0', static:static_deps)

meson_options.txt

@@ -1,2 +1,2 @@
-option('android', type : 'boolean', value : false,
-  description : 'Do we make a kiwix-lib for android')
+option('wrapper', type:'array', choices:['java', 'android'], value:[],
+  description: 'The wrapper to generate.')

src/meson.build

@@ -32,13 +32,16 @@ else
   kiwix_sources += 'subprocess_unix.cpp'
 endif
 
-if get_option('android')
-  subdir('android')
+if 'android' in wrapper
   install_dir = 'kiwix-lib/jniLibs/' + meson.get_cross_property('android_abi')
 else
   install_dir = get_option('libdir')
 endif
 
+if 'android' in wrapper or 'java' in wrapper
+  subdir('wrapper/java')
+endif
+
 config_h = configure_file(output : 'kiwix_config.h',
                configuration : conf,
                input : 'config.h.in')

src/wrapper/java/meson.build

@@ -25,16 +25,18 @@ kiwix_jni = custom_target('jni',
   command:['javac', '-d', '@OUTDIR@', '-h', '@OUTDIR@', '@INPUT@']
 )
 
-kiwix_sources += [
-    'android/kiwixicu.cpp',
-    'android/book.cpp',
-    'android/kiwixreader.cpp',
-    'android/library.cpp',
-    'android/manager.cpp',
-    'android/filter.cpp',
-    'android/kiwixsearcher.cpp',
-    'android/kiwixserver.cpp',
-    kiwix_jni]
+java_sources = files([
+     'kiwixicu.cpp',
+     'book.cpp',
+     'kiwixreader.cpp',
+     'library.cpp',
+     'manager.cpp',
+     'filter.cpp',
+     'kiwixsearcher.cpp',
+     'kiwixserver.cpp',
+])
+
+kiwix_sources += java_sources + [kiwix_jni]
 
 install_subdir('org', install_dir: 'kiwix-lib/java')
 install_subdir('res', install_dir: 'kiwix-lib')