Update to the latest version of Gnulib

Specify ACLOCAL_AMFLAGS as otherwise the current Python version of
gnulib-tool fails with "IndexError: list index out of range".

Makefile.am

@@ -27,6 +27,9 @@
 # along with this program.  If not, see https://www.gnu.org/licenses/.
 
 
+# Specify m4 include directory
+ACLOCAL_AMFLAGS = -I m4
+
 # Subdirectories to recurse into
 SUBDIRS = lib src po data doc m4
 

NEWS

@@ -28,6 +28,10 @@ Version 7.21 (not yet released)
 Minor bug fix for the manual page: removed the invocation to the
 undefined "mR" font.
 
+Updated to the latest snapshot of the Gnulib GNU Portability Library,
+including changes to make Star Traders work with Gnulib’s new
+Python-based ``gnulib-tool``.
+
 
 Version 7.20 (31st January, 2024)
 ---------------------------------

configure.ac

@@ -31,7 +31,7 @@ AC_INIT([Star Traders], [7.21], [J.Zaitseff@zap.org.au], [trader],
 AC_DEFINE([PACKAGE_AUTHOR], ["John Zaitseff"], [Package author])
 
 AC_PREREQ([2.71])
-AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_MACRO_DIRS([m4])
 AC_CONFIG_SRCDIR([src/trader.c])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_HEADERS([config.h])

lib/.gitignore

@@ -60,6 +60,7 @@
 /memchr.valgrind
 /monetary.in.h
 /setlocale-lock.c
+/setlocale_null-unlocked.c
 /setlocale_null.c
 /setlocale_null.h
 /stdbool.in.h

m4/.gitignore

@@ -42,6 +42,7 @@
 /multiarch.m4
 /musl.m4
 /nocrash.m4
+/off64_t.m4
 /off_t.m4
 /pid_t.m4
 /setlocale_null.m4