avoid using m4_esyscmd_s() since it is not available in older versions of autoconf...

see #3613

diff --git a/configure.ac b/configure.ac
index 3a679ba0bcfcfd4dfdc8dc6e4d2750a3afccfcd6..34d0dccc3c58ddba142d404f33ff984a2a21d5d5 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,8 @@ dnl Process this file with autoconf to produce a configure script.
 dnl !!! WHEN ADDING NEW CONFIGURE TESTS, PLEASE ADD CODE TO MAIN.C !!!
 dnl !!! TO DUMP THEIR RESULTS WHEN MUTT -V IS CALLED            !!!
 
-AC_INIT([mutt],[m4_esyscmd_s(cat VERSION)])
+AC_INIT([mutt],[m4_translit(m4_esyscmd(cat VERSION),`
+')])
 AC_CONFIG_SRCDIR(mutt.h)
 AM_INIT_AUTOMAKE
 AC_CONFIG_HEADERS([config.h])