Use meson build system

The last tarball has been generated with meson, so it doesn't have
a pre-generated configure script.

As this is the last release with autotools support, it's better to
just move to meson instead of messing around with autogen.

0001-build-Fix-installation-with-DESTDIR-set.patch

@@ -0,0 +1,37 @@
+From 4a7c705a8c181eda6bb4e03a5674aab393331a04 Mon Sep 17 00:00:00 2001
+From: Bastien Nocera <hadess@hadess.net>
+Date: Fri, 29 Nov 2019 17:50:48 +0100
+Subject: [PATCH] build: Fix installation with DESTDIR set
+
+os.path.join() doesn't simply concatenate paths as:
+If a component is an absolute path, all previous components are
+thrown away and joining continues from the absolute path component.
+
+Strip the leading '/' from the configured prefix if needed to prevent
+that.
+
+Closes: https://gitlab.gnome.org/GNOME/gjs/issues/291
+---
+ build/symlink-gjs.py | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/build/symlink-gjs.py b/build/symlink-gjs.py
+index 365a3211..2c6f0a57 100644
+--- a/build/symlink-gjs.py
++++ b/build/symlink-gjs.py
+@@ -12,7 +12,11 @@ destdir = os.environ.get('DESTDIR')
+ install_prefix = os.environ.get('MESON_INSTALL_PREFIX')
+ bindir = sys.argv[1]
+ if destdir is not None:
+-    installed_bin_dir = os.path.join(destdir, install_prefix, bindir)
++    # os.path.join() doesn't concat paths if one of them is absolute
++    if install_prefix[0] == '/' and os.name is not 'nt':
++        installed_bin_dir = os.path.join(destdir, install_prefix[1:], bindir)
++    else:
++        installed_bin_dir = os.path.join(destdir, install_prefix, bindir)
+ else:
+     installed_bin_dir = os.path.join(install_prefix, bindir)
+ 
+-- 
+2.23.0
+

gjs.spec

@@ -16,11 +16,14 @@ License:       MIT and (MPLv1.1 or GPLv2+ or LGPLv2+)
 URL:           https://wiki.gnome.org/Projects/Gjs
 Source0:       https://download.gnome.org/sources/%{name}/1.58/%{name}-%{version}.tar.xz
 
+Patch0:        0001-build-Fix-installation-with-DESTDIR-set.patch
+
 BuildRequires: cairo-gobject-devel
 BuildRequires: chrpath
 BuildRequires: dbus-daemon
 BuildRequires: dbus-glib-devel
 BuildRequires: gcc-c++
+BuildRequires: meson
 BuildRequires: gettext
 BuildRequires: glib2-devel >= %{glib2_version}
 BuildRequires: gobject-introspection-devel >= %{gobject_introspection_version}
@@ -62,12 +65,11 @@ the functionality of the installed gjs package.
 %autosetup -p1
 
 %build
-%configure --disable-static --enable-installed-tests
-
-make %{?_smp_mflags} V=1
+%meson
+%meson_build
 
 %install
-%make_install
+%meson_install
 
 # Remove lib64 rpaths
 chrpath --delete %{buildroot}%{_bindir}/gjs-console
@@ -76,7 +78,7 @@ chrpath --delete %{buildroot}%{_libexecdir}/gjs/installed-tests/minijasmine
 find %{buildroot} -name '*.la' -exec rm -f {} ';'
 
 %check
-#make check
+#meson_test
 
 %files
 %license COPYING