Makefile.am uses ${INSTALL_PROGAM} to install scripts and configuation files,
leading to an error from strip(1). This patch instead uses ${INSTALL} (for scripts)
and ${INSTALL_DATA} (for configuration files).

--- Makefile.am.orig	2022-08-29 17:51:29 UTC
+++ Makefile.am
@@ -198,24 +198,24 @@ endif
 	$(MKDIR_P) "$(DESTDIR)$(datadir)/urbackup/scripts"
 	$(MKDIR_P) "$(DESTDIR)$(sysconfdir)/urbackup"
 	
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/list" "$(DESTDIR)$(datadir)/urbackup/scripts/list"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/list_incr" "$(DESTDIR)$(datadir)/urbackup/scripts/list_incr"
-	test -e "$(DESTDIR)$(sysconfdir)/urbackup/mariadbdump.conf" || $(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/mariadbdump.conf" "$(DESTDIR)$(sysconfdir)/urbackup/mariadbdump.conf"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/mariadbdump" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbdump"
-	test -e "$(DESTDIR)$(sysconfdir)/urbackup/postgresqldump.conf" || $(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/postgresqldump.conf" "$(DESTDIR)$(sysconfdir)/urbackup/postgresqldump.conf"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/postgresqldump" "$(DESTDIR)$(datadir)/urbackup/scripts/postgresqldump"
-	test -e "$(DESTDIR)$(sysconfdir)/urbackup/postgresbase.conf" || $(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/postgresbase.conf" "$(DESTDIR)$(sysconfdir)/urbackup/postgresbase.conf"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/postgresbase" "$(DESTDIR)$(datadir)/urbackup/scripts/postgresbase"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/postgresqlprebackup" "$(DESTDIR)$(datadir)/urbackup/scripts/postgresqlprebackup"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/postgresqlpostbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/postgresqlpostbackup"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/setup-postgresbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/setup-postgresbackup"
-	test -e "$(DESTDIR)$(sysconfdir)/urbackup/mariadbxtrabackup.conf" || $(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/mariadbxtrabackup.conf" "$(DESTDIR)$(sysconfdir)/urbackup/mariadbxtrabackup.conf"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/mariadbxtrabackup" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbxtrabackup"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/mariadbxtrabackup_incr" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbxtrabackup_incr"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/restore-mariadbbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/restore-mariadbbackup"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/mariadbprebackup" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbprebackup"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/mariadbpostbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbpostbackup"
-	$(INSTALL_PROGRAM) "$(srcdir)/urbackupclient/backup_scripts/setup-mariadbbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/setup-mariadbbackup"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/list" "$(DESTDIR)$(datadir)/urbackup/scripts/list"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/list_incr" "$(DESTDIR)$(datadir)/urbackup/scripts/list_incr"
+	test -e "$(DESTDIR)$(sysconfdir)/urbackup/mariadbdump.conf" || $(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/mariadbdump.conf" "$(DESTDIR)$(sysconfdir)/urbackup/mariadbdump.conf"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/mariadbdump" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbdump"
+	test -e "$(DESTDIR)$(sysconfdir)/urbackup/postgresqldump.conf" || $(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/postgresqldump.conf" "$(DESTDIR)$(sysconfdir)/urbackup/postgresqldump.conf"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/postgresqldump" "$(DESTDIR)$(datadir)/urbackup/scripts/postgresqldump"
+	test -e "$(DESTDIR)$(sysconfdir)/urbackup/postgresbase.conf" || $(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/postgresbase.conf" "$(DESTDIR)$(sysconfdir)/urbackup/postgresbase.conf"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/postgresbase" "$(DESTDIR)$(datadir)/urbackup/scripts/postgresbase"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/postgresqlprebackup" "$(DESTDIR)$(datadir)/urbackup/scripts/postgresqlprebackup"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/postgresqlpostbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/postgresqlpostbackup"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/setup-postgresbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/setup-postgresbackup"
+	test -e "$(DESTDIR)$(sysconfdir)/urbackup/mariadbxtrabackup.conf" || $(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/mariadbxtrabackup.conf" "$(DESTDIR)$(sysconfdir)/urbackup/mariadbxtrabackup.conf"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/mariadbxtrabackup" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbxtrabackup"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/mariadbxtrabackup_incr" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbxtrabackup_incr"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/restore-mariadbbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/restore-mariadbbackup"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/mariadbprebackup" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbprebackup"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/mariadbpostbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/mariadbpostbackup"
+	$(INSTALL) "$(srcdir)/urbackupclient/backup_scripts/setup-mariadbbackup" "$(DESTDIR)$(datadir)/urbackup/scripts/setup-mariadbbackup"
 	
 	for script in "$(DESTDIR)$(datadir)/urbackup/scripts/"*; do sed "s|SYSCONFDIR|$(sysconfdir)/urbackup|g" "$$script" > "$$script.r"; mv "$$script.r" "$$script"; done
 	chmod 700 "$(DESTDIR)$(datadir)/urbackup/scripts/"*