Index: common/libs/func_check_version.sh
===================================================================
--- common/libs/func_check_version.sh	(revision 3519)
+++ common/libs/func_check_version.sh	(working copy)
@@ -99,8 +99,10 @@
   check_version "3.0"     "$(gawk --version  | head -n1 | cut -d" " -f3)"      "GAWK"
   check_version "2.5"     "$(grep --version  | head -n1 | awk '{print $NF}')"  "GREP"
   check_version "1.2.4"   "$(gzip --version 2>&1 | head -n1 | cut -d" " -f2)"  "GZIP"
+  check_version "1.4"     "$(m4 --version 2>&1 | head -n1 | cut -d" " -f3)"    "M4"
   check_version "3.79.1"  "$(make --version  | head -n1 | cut -d " " -f3 | cut -c1-4)"  "MAKE"
   check_version "2.5.4"   "$(patch --version | head -n1 | cut -d" " -f2)"      "PATCH"
+  check_version "5.6.0"   "$(perl -V:version | cut -f2 -d\')"                  "PERL"
   check_version "3.0.2"   "$(sed --version   | head -n1 | cut -d" " -f4)"      "SED"
   check_version "4.8"	  "$(makeinfo --version | head -n1 | awk '{ print$NF }')" "TEXINFO"