libadwaita: new port in gnome

Closes: https://trac.macports.org/ticket/69589

gnome/libadwaita/Portfile

@@ -0,0 +1,49 @@
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:filetype=tcl:et:sw=4:ts=4:sts=4
+
+PortSystem          1.0
+PortGroup           meson 1.0
+
+name                libadwaita
+version             1.5.1
+revision            0
+
+categories          gnome devel
+license             LGPL-2.1
+maintainers         {@barracuda156 gmail.com:vital.had} openmaintainer
+
+description         Building blocks for modern GNOME applications
+long_description    {*}${description}
+homepage            https://www.gnome.org
+
+set branch          [join [lrange [split ${version} .] 0 1] .]
+master_sites        gnome:sources/${name}/${branch}/
+use_xz              yes
+
+checksums           rmd160  77df2ee32a29849b6d975b833b811509db051123 \
+                    sha256  7f144c5887d6dd2d99517c00fd42395ee20abc13ce55958a4fda64e6d7e473f8 \
+                    size    4453888
+
+meson.wrap_mode     nodownload
+
+depends_build-append \
+                    port:gettext \
+                    path:bin/pkg-config:pkgconfig \
+                    port:sassc \
+                    path:bin/vala:vala
+
+depends_lib-append  port:appstream \
+                    path:lib/pkgconfig/cairo.pc:cairo \
+                    port:fribidi \
+                    path:lib/pkgconfig/gdk-pixbuf-2.0.pc:gdk-pixbuf2 \
+                    port:gettext-runtime \
+                    path:lib/pkgconfig/glib-2.0.pc:glib2 \
+                    path:lib/pkgconfig/gobject-introspection-1.0.pc:gobject-introspection \
+                    port:graphene \
+                    path:lib/pkgconfig/gtk4.pc:gtk4
+
+# adw-settings-impl-macos.c: error: stray '@' in program
+# Use this code where it is actually needed.
+patchfiles-append   patch-fix-adw-settings-impl-macos.diff
+
+# cc1: error: unrecognized command line option "-std=gnu11"
+compiler.c_standard 2011

gnome/libadwaita/files/patch-fix-adw-settings-impl-macos.diff

@@ -0,0 +1,44 @@
+--- src/adw-settings-impl-macos.c	2024-05-24 13:03:30.000000000 +0800
++++ src/adw-settings-impl-macos.c	2024-06-10 07:43:01.000000000 +0800
+@@ -8,6 +8,7 @@
+
+ #include "adw-settings-impl-private.h"
+
++#include <AvailabilityMacros.h>
+ #include <AppKit/AppKit.h>
+
+ struct _AdwSettingsImplMacOS
+@@ -41,6 +42,7 @@
+ static AdwSystemColorScheme
+ get_ns_color_scheme (void)
+ {
++#if MAC_OS_X_VERSION_MIN_REQUIRED >= 101400
+   if (@available(*, macOS 10.14)) {
+     NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
+     NSString *style = [userDefaults stringForKey:@"AppleInterfaceStyle"];
+@@ -61,7 +63,7 @@
+       ADW_SYSTEM_COLOR_SCHEME_PREFER_DARK :
+       ADW_SYSTEM_COLOR_SCHEME_DEFAULT;
+   }
+-
++#endif
+   return ADW_SYSTEM_COLOR_SCHEME_DEFAULT;
+ }
+
+@@ -90,7 +92,7 @@
+
+   if (!enable_color_scheme)
+     return ADW_SETTINGS_IMPL (self);
+-
++#if MAC_OS_X_VERSION_MIN_REQUIRED >= 101400
+   if (@available(*, macOS 10.14)) {
+     static ThemeChangedObserver *observer;
+
+@@ -108,6 +110,6 @@
+                                     /* has_color_scheme */ TRUE,
+                                     /* has_high_contrast */ FALSE);
+   }
+-
++#endif
+   return ADW_SETTINGS_IMPL (self);
+ }