build: Replace Autotools with Meson

Quick rundown of benefits:

- Much faster:
  - Autotools (with autogen): 22 seconds
  - Meson: 7 seconds
  - Meson (with ccache): 2 seconds

- Simpler:
  - ~1000 lines smaller
  - Single simple language

- Potentially better Windows (Visual Studio) support

What is not done:

- Complete Windows support
- OSX support (easy)

Closes #2013
Closes #1937
Closes #1803

1 files changed, 130 insertions, 0 deletions

diff --git a/meson.build b/meson.build
new file mode 100644
index 00000000..462673fb
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,130 @@
+project('hexchat', 'c',
+  version: '2.12.4',
+  meson_version: '>= 0.37.0',
+  default_options: [
+    'c_std=gnu89',
+    'buildtype=debugoptimized',
+    'warning_level=1',
+  ]
+)
+
+i18n = import('i18n')
+gnome = import('gnome')
+cc = meson.get_compiler('c')
+
+
+libgio_dep = dependency('gio-2.0', version: '>= 2.34.0')
+libgmodule_dep = dependency('gmodule-2.0')
+if cc.get_id() == 'msvc'
+  libssl_dep = cc.find_library('libeay32')
+else
+  libssl_dep = dependency('openssl', version: '>= 0.9.8',
+                          required: get_option('with-ssl'))
+endif
+
+config_h = configuration_data()
+config_h.set_quoted('PACKAGE_VERSION', meson.project_version())
+config_h.set_quoted('PACKAGE_NAME', meson.project_name())
+config_h.set_quoted('GETTEXT_PACKAGE', 'hexchat')
+config_h.set_quoted('LOCALEDIR', join_paths(get_option('prefix'),
+                                 get_option('datadir'), 'locale'))
+config_h.set10('ENABLE_NLS', true)
+
+# Optional features
+config_h.set('USE_OPENSSL', get_option('with-ssl'))
+config_h.set('USE_LIBPROXY', get_option('with-libproxy'))
+config_h.set('USE_LIBCANBERRA', get_option('with-libcanberra'))
+config_h.set('USE_DBUS', get_option('with-dbus'))
+config_h.set('USE_PLUGIN', get_option('with-plugin'))
+
+config_h.set('G_DISABLE_SINGLE_INCLUDES', true)
+config_h.set('GTK_DISABLE_DEPRECATED', true)
+config_h.set('GTK_DISABLE_SINGLE_INCLUDES', true)
+config_h.set('GDK_PIXBUF_DISABLE_SINGLE_INCLUDES', true)
+config_h.set('GLIB_VERSION_MAX_ALLOWED', 'GLIB_VERSION_2_34')
+config_h.set('GLIB_VERSION_MIN_REQUIRED', 'GLIB_VERSION_2_34')
+
+# Detected features
+config_h.set('HAVE_MEMRCHR', cc.has_function('memrchr'))
+config_h.set('HAVE_STRINGS_H', cc.has_header('strings.h'))
+
+if libssl_dep.found()
+  config_h.set('HAVE_X509_GET_SIGNATURE_NID',
+    cc.has_function('X509_get_signature_nid', dependencies: libssl_dep)
+  )
+  config_h.set('HAVE_SSL_CTX_GET_SSL_METHOD',
+    cc.has_function('SSL_CTX_get_ssl_method', dependencies: libssl_dep)
+  )
+  config_h.set('HAVE_DH_SET0_PQG',
+    cc.has_function('DH_set0_pqg', dependencies: libssl_dep)
+  )
+  config_h.set('HAVE_DH_GET0_KEY',
+    cc.has_function('DH_get0_key', dependencies: libssl_dep)
+  )
+  config_h.set('HAVE_DH_SET0_KEY',
+    cc.has_function('DH_set0_key', dependencies: libssl_dep)
+  )
+endif
+
+configure_file(output: 'config.h', configuration: config_h)
+config_h_include = include_directories('.')
+
+if host_machine.system() == 'windows'
+  add_project_arguments('-DWIN32', language: 'c')
+endif
+
+
+global_cflags = []
+test_cflags = [
+  '-pipe',
+  '-funsigned-char',
+  '-Wno-conversion',
+  '-Wno-pointer-sign',
+  '-Wno-padded',
+  '-Wno-unused-parameter',
+  '-Wno-missing-prototypes',
+  '-Winline',
+  '-Wstrict-prototypes',
+  '-Werror=implicit-function-declaration',
+  '-Werror=pointer-arith',
+  '-Werror=init-self',
+  ['-Werror=format-security', '-Werror=format=1'],
+  '-Werror=missing-include-dirs',
+  '-Werror=date-time',
+]
+if host_machine.system() != 'windows' and get_option('buildtype') != 'plain'
+  test_cflags += '-fstack-protector-strong'
+endif
+foreach cflag : test_cflags
+  if cc.has_multi_arguments(cflag)
+    global_cflags += cflag
+  endif
+endforeach
+add_project_arguments(global_cflags, language: 'c')
+
+if host_machine.system() != 'windows'
+  global_ldflags = []
+  test_ldflags = [
+    '-Wl,-z,relro',
+    '-Wl,-z,now',
+  ]
+  foreach ldflag : test_ldflags
+    if cc.has_argument(ldflag)
+      global_ldflags += ldflag
+    endif
+  endforeach
+  add_project_link_arguments(global_ldflags, language: 'c')
+endif
+
+subdir('src')
+if get_option('with-plugin')
+  subdir('plugins')
+endif
+if cc.get_id() != 'msvc'
+  subdir('data')
+  subdir('po') # FIXME: build xgettext
+
+  meson.add_install_script('meson_post_install.py',
+    '@0@'.format(get_option('with-theme-manager'))
+  )
+endif