--- a/configure.in
+++ b/configure.in
@@ -756,26 +756,24 @@ AC_SUBST(MOZ_MSVC_STL_WRAP__Throw)
 AC_SUBST(MOZ_MSVC_STL_WRAP__RAISE)
 
 dnl ========================================================
 dnl Checks for programs.
 dnl ========================================================
 AC_PROG_INSTALL
 AC_PROG_LN_S
 
-if test -z "$TINDERBOX_SKIP_PERL_VERSION_CHECK"; then
 AC_MSG_CHECKING([for minimum required perl version >= $PERL_VERSION])
 _perl_version=`PERL_VERSION=$PERL_VERSION $PERL -e 'print "$]"; if ($] >= $ENV{PERL_VERSION}) { exit(0); } else { exit(1); }' 2>&5`
 _perl_res=$?
 AC_MSG_RESULT([$_perl_version])
 
 if test "$_perl_res" != 0; then
     AC_MSG_ERROR([Perl $PERL_VERSION or higher is required.])
 fi
-fi
 
 AC_MSG_CHECKING([for full perl installation])
 _perl_archlib=`$PERL -e 'use Config; if ( -d $Config{archlib} ) { exit(0); } else { exit(1); }' 2>&5`
 _perl_res=$?
 if test "$_perl_res" != 0; then
     AC_MSG_RESULT([no])
     AC_MSG_ERROR([Cannot find Config.pm or \$Config{archlib}.  A full perl installation is required.])
 else

--- a/js/src/configure.in
+++ b/js/src/configure.in
@@ -580,26 +580,24 @@ AC_PROG_LN_S
 AC_MSG_CHECKING([for tar archiver])
 AC_CHECK_PROGS(TAR, gnutar gtar tar, "")
 if test -z "$TAR"; then
     AC_MSG_WARN([no tar archiver found in \$PATH])
 fi
 AC_MSG_RESULT([$TAR])
 AC_SUBST(TAR)
 
-if test -z "$TINDERBOX_SKIP_PERL_VERSION_CHECK"; then
 AC_MSG_CHECKING([for minimum required perl version >= $PERL_VERSION])
 _perl_version=`PERL_VERSION=$PERL_VERSION $PERL -e 'print "$]"; if ($] >= $ENV{PERL_VERSION}) { exit(0); } else { exit(1); }' 2>&5`
 _perl_res=$?
 AC_MSG_RESULT([$_perl_version])
 
 if test "$_perl_res" != 0; then
     AC_MSG_ERROR([Perl $PERL_VERSION or higher is required.])
 fi
-fi
 
 AC_MSG_CHECKING([for full perl installation])
 _perl_archlib=`$PERL -e 'use Config; if ( -d $Config{archlib} ) { exit(0); } else { exit(1); }' 2>&5`
 _perl_res=$?
 if test "$_perl_res" != 0; then
     AC_MSG_RESULT([no])
     AC_MSG_ERROR([Cannot find Config.pm or \$Config{archlib}.  A full perl installation is required.])
 else