Port autoconf script to C99 and enable autoreconf for this package.

Upstrem bug tracked here:
https://bugzilla.netfilter.org/show_bug.cgi?id=1654

https://fedoraproject.org/wiki/Toolchain/PortingToModernC

libnetfilter_conntrack-autoconf.patch

@@ -0,0 +1,21 @@
+Port autoconf script to C99 and enable autoreconf for this package.
+
+Upstrem bug tracked here:
+https://bugzilla.netfilter.org/show_bug.cgi?id=1654
+
+diff --git a/configure.ac b/configure.ac
+index 060f307..fd70863 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -55,9 +55,9 @@ int main()
+      struct in6_addr addr6;
+      char buf[128];
+      if (inet_ntop(AF_INET6, &addr6, buf, 128) == 0 && errno == EAFNOSUPPORT)
+-        exit(1);
++        return 1;
+      else
+-        exit(0);
++        return 0;
+   }
+   ]])],[ AC_MSG_RESULT(yes)
+        AC_DEFINE_UNQUOTED(HAVE_INET_NTOP_IPV6, 1, [Define to 1 if inet_ntop supports IPv6.])

libnetfilter_conntrack.spec

@@ -1,16 +1,17 @@
 Name:           libnetfilter_conntrack
 Version:        1.0.8
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        Netfilter conntrack userspace library
 License:        GPLv2+
 URL:            http://netfilter.org
 Source0:        http://netfilter.org/projects/libnetfilter_conntrack/files/%{name}-%{version}.tar.bz2
+Patch0:         libnetfilter_conntrack-autoconf.patch
 
 BuildRequires:  gcc
 BuildRequires:  kernel-headers
 BuildRequires:  libmnl-devel >= 1.0.3
 BuildRequires:  libnfnetlink-devel >= 1.0.1
-BuildRequires:  make
+BuildRequires:  make autoconf automake libtool
 BuildRequires:  pkgconfig
 
 %description
@@ -30,6 +31,7 @@ interface (API) to the in-kernel connection tracking state table.
 %autosetup -p1
 
 %build
+autoreconf -vi
 %configure --disable-static --disable-rpath
 
 %{make_build}
@@ -51,6 +53,10 @@ find $RPM_BUILD_ROOT -type f -name "*.la" -delete
 %{_includedir}/libnetfilter_conntrack/*.h
 
 %changelog
+* Fri Jan 06 2023 Peter Fordham <peter.fordham@gmail.com> - 1.0.8-6
+- Port autoconf script to C99 and enable autoreconf for this package.
+  https://bugzilla.netfilter.org/show_bug.cgi?id=1654
+
 * Thu Jul 21 2022 Fedora Release Engineering <releng@fedoraproject.org> - 1.0.8-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild