3 files changed, 3 insertions, 2 deletions
diff --git a/acsite.m4 b/acsite.m4
index 46f69f9..9dbb496 100644
--- a/acsite.m4
+++ b/acsite.m4
@@ -24,7 +24,7 @@ dnl
 dnl	Check for a Fortran 9X compiler.
 dnl
 AC_DEFUN(AC_PROG_F9X,
-[AC_CHECK_PROGS(F9X, f90 pgf90 xlf90 f95 g95 xlf95)
+[AC_CHECK_PROGS(F9X, f90 pgf90 xlf90 f95 g95 xlf95 efc)
 test -z "$F9X" && AC_MSG_ERROR([no acceptable f9X compiler found in \$PATH])
 
 AC_PROG_F9X_WORKS
diff --git a/configure b/configure
index d0b9cc0..26f10df 100755
--- a/configure
+++ b/configure
@@ -7175,7 +7175,7 @@ if test "X$HDF_FORTRAN" = "Xyes"; then
 
 
 
-        for ac_prog in f90 pgf90 xlf90 f95 g95 xlf95
+        for ac_prog in f90 pgf90 xlf90 f95 g95 xlf95 efc
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
diff --git a/configure.in b/configure.in
index 23f685a..968f726 100644
--- a/configure.in
+++ b/configure.in
@@ -16,6 +16,7 @@ dnl ----------------------------------------------------------------------
 dnl Initialize configure.
 dnl
 AC_REVISION($Id$)
+AC_PREREQ([2.53])
 
 dnl AC_INIT takes the name of the package, the version number, and an
 dnl email address to report bugs. AC_CONFIG_SRCDIR takes a unique file