added extra/gjs

extra/gjs/PKGBUILD

@@ -0,0 +1,51 @@
+# Maintainer: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
+# Contributor: Ionut Biru <ibiru@archlinux.org>
+
+# ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
+#  - patch from debian to detect libatomic usage
+
+pkgname=gjs
+pkgver=1.70.0
+pkgrel=1
+epoch=2
+pkgdesc="Javascript Bindings for GNOME"
+url="https://wiki.gnome.org/Projects/Gjs"
+arch=(x86_64)
+license=(GPL)
+depends=(cairo gobject-introspection-runtime js78 dconf readline)
+makedepends=(gobject-introspection git meson dbus)
+checkdepends=(valgrind xorg-server-xvfb gtk3 gtk4)
+provides=(libgjs.so)
+_commit=da5d5fe74469c799de80117758d79ad694d1116a  # tags/1.70.0^0
+source=("git+https://gitlab.gnome.org/GNOME/gjs.git#commit=$_commit"
+        build-Link-with-libatomic-if-necessary.patch)
+sha256sums=('SKIP'
+            'fcfcc02a65b3917fbdf7ded5ee294ff5fc71225ffe720e42ca0257c7cb14eada')
+
+pkgver() {
+  cd $pkgname
+  git describe --tags | sed 's/-/+/g'
+}
+
+prepare() {
+  cd $pkgname
+  patch -p1 -i ../build-Link-with-libatomic-if-necessary.patch
+}
+
+build() {
+  arch-meson $pkgname build \
+    --buildtype release \
+    -D installed_tests=false \
+    -D profiler=disabled
+  meson compile -C build
+}
+
+check() {
+  xvfb-run -s '-nolisten local' \
+    meson test -C build --print-errorlogs
+}
+
+package() {
+  depends+=(libreadline.so)
+  meson install -C build --destdir "$pkgdir"
+}

extra/gjs/build-Link-with-libatomic-if-necessary.patch

@@ -0,0 +1,60 @@
+From: Simon McVittie <smcv@debian.org>
+Date: Fri, 8 Oct 2021 11:42:49 +0100
+Subject: build: Link with libatomic if necessary
+
+The implementation of atomic operations in gcc uses atomic opcodes if
+supported, but falls back to a library implementation if necessary.
+Link that library on architectures where 64-bit atomic operations need it,
+such as Debian armel (ARMv5 EABI softfloat), mipsel and powerpc.
+
+Bug: https://gitlab.gnome.org/GNOME/gjs/-/issues/442
+Bug-Debian: https://bugs.debian.org/995930
+Forwarded: https://gitlab.gnome.org/GNOME/gjs/-/merge_requests/686
+Signed-off-by: Simon McVittie <smcv@debian.org>
+---
+ meson.build | 18 +++++++++++++++++-
+ 1 file changed, 17 insertions(+), 1 deletion(-)
+
+diff --git a/meson.build b/meson.build
+index 6ded66c..e230a09 100644
+--- a/meson.build
++++ b/meson.build
+@@ -109,6 +109,8 @@ endif
+ 
+ ### Check for required libraries ###############################################
+ 
++null_dep = dependency('', required : false)
++
+ # Note: Notify GNOME release team when adding or updating dependencies
+ glib_required_version = '>= 2.66.0'
+ glib = dependency('glib-2.0', version: glib_required_version,
+@@ -180,6 +182,20 @@ features.''')
+     endif
+ endif
+ 
++if cxx.links('''
++#include <atomic>
++
++int main(void)
++{
++  std::atomic_int64_t value = ATOMIC_VAR_INIT(0);
++  return value.load();
++}
++''', name: '64-bit atomics built-in')
++    libatomic = null_dep
++else
++    libatomic = cc.find_library('atomic', required: false)
++endif
++
+ build_profiler = sysprof_capture.found() and not get_option('profiler').disabled()
+ profiler_deps = [sysprof_capture]
+ if build_profiler and not cxx.has_function('timer_settime')
+@@ -458,7 +474,7 @@ module_resource_srcs = gnome.compile_resources('js-resources',
+     c_name: 'js_resources')
+ 
+ libgjs_dependencies = [glib, gobject, gthread, gio, gi, ffi, spidermonkey,
+-    readline]
++    readline, libatomic]
+ pkg_dependencies = [glib, gobject, gthread, gio, gi, ffi, spidermonkey]
+ libraries_private = []
+