Fix ifort warning flag.

Restore AC_DEFUN([PAC_PROG_FC_DEFAULT_REALisDBLE] in m4/aclocal_fc.m4.
Add --enable-symbols, --enable-profiling, and --enable-optimization
options to autotools configure;  all configure flags for
--enable-production and --disable-production should match HDF5 1.10 and
1.12 production and debug default flags.

1 files changed, 33 insertions, 0 deletions

diff --git a/m4/aclocal_fc.m4 b/m4/aclocal_fc.m4
index ab45bbc..a35cc7e 100644
--- a/m4/aclocal_fc.m4
+++ b/m4/aclocal_fc.m4
@@ -131,6 +131,39 @@ AC_DEFUN([PAC_PROG_FC_C_LONG_DOUBLE_EQ_C_DOUBLE],[
 ])
 fi
 
+dnl Check to see if -r8 was specified to determine if we need to
+dnl compile the DOUBLE PRECISION interfaces.
+
+AC_DEFUN([PAC_PROG_FC_DEFAULT_REALisDBLE],[
+  FORTRAN_DEFAULT_REALisDBLE="no"
+  AC_MSG_CHECKING([if Fortran default REAL is DOUBLE PRECISION])
+
+  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
+     MODULE type_mod
+       INTERFACE h5t
+         MODULE PROCEDURE h5t_real
+         MODULE PROCEDURE h5t_dble
+       END INTERFACE
+     CONTAINS
+       SUBROUTINE h5t_real(r)
+         REAL :: r
+       END SUBROUTINE h5t_real
+       SUBROUTINE h5t_dble(d)
+         DOUBLE PRECISION :: d
+       END SUBROUTINE h5t_dble
+     END MODULE type_mod
+     PROGRAM main
+       USE type_mod
+       REAL :: r
+       DOUBLE PRECISION :: d
+       CALL h5t(r)
+       CALL h5t(d)
+     END PROGRAM main
+    ])], [AC_MSG_RESULT([no])],
+         [AC_MSG_RESULT([yes])
+            FORTRAN_DEFAULT_REALisDBLE="yes"])
+])
+
 dnl Checking if the compiler supports the required Fortran 2003 features and
 dnl disable Fortran 2003 if it does not.