Fix s-nail makeflags

Resolves: rhbz#2171723

s-nail-makeflags.patch

@@ -0,0 +1,21 @@
+commit 6b2c08bcd0e1c34db4b1bf9946a201f03595e36d
+Author: Tomas Korbar <tkorbar@redhat.com>
+Date:   Thu Apr 13 10:20:08 2023 +0200
+
+    Remove sync-mutex from MAKEFLAGS
+
+diff --git a/mk/make-config.sh b/mk/make-config.sh
+index 2d7c619..c12d317 100644
+--- a/mk/make-config.sh
++++ b/mk/make-config.sh
+@@ -1555,6 +1555,10 @@ if feat_yes DOTLOCK; then
+    printf "#real below OPTIONAL_PS_DOTLOCK = \$(VAL_PS_DOTLOCK)\n" >> ${newmk}
+ fi
+ 
++
++# remove sync-mutex option
++MAKEFLAGS=$(printf %b "${MAKEFLAGS}" | ${sed} -e "s#--sync-mutex=[a-zA-Z0-9:/]*##")
++
+ for i in \
+    CWDDIR TOPDIR OBJDIR INCDIR SRCDIR \
+          MX_CWDDIR MX_INCDIR MX_SRCDIR \

s-nail.spec

@@ -1,6 +1,6 @@
 Name:           s-nail
 Version:        14.9.24
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Environment for sending and receiving mail
 
 # Everything is ISC except parts coming from the original Heirloom mailx which are BSD
@@ -11,7 +11,10 @@ Source1:        https://www.sdaoden.eu/downloads/%{name}-%{version}.tar.xz.asc
 # https://ftp.sdaoden.eu/steffen.asc
 Source2:        steffen.asc
 
-BuildRequires: make
+# https://bugzilla.redhat.com/show_bug.cgi?id=2171723
+Patch0:		s-nail-makeflags.patch
+
+BuildRequires:  make
 BuildRequires:  gnupg2
 BuildRequires:  gcc
 BuildRequires:  openssl
@@ -143,6 +146,10 @@ fi
 
 
 %changelog
+* Thu Apr 13 2023 Tomas Korbar <tkorbar@redhat.com> - 14.9.24-4
+- Fix s-nail makeflags
+- Resolves: rhbz#2171723
+
 * Sat Jan 21 2023 Fedora Release Engineering <releng@fedoraproject.org> - 14.9.24-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild