diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/aclocal_fc.m4 | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/m4/aclocal_fc.m4 b/m4/aclocal_fc.m4 index febd73c..5ff22a8 100644 --- a/m4/aclocal_fc.m4 +++ b/m4/aclocal_fc.m4 @@ -125,12 +125,27 @@ AC_DEFUN([PAC_PROG_FC_STORAGE_SIZE],[ ]) -dnl Check to see C_LONG_DOUBLE is available, and if it -dnl is different from C_DOUBLE +dnl Check to see C_LONG_DOUBLE is available AC_DEFUN([PAC_PROG_FC_HAVE_C_LONG_DOUBLE],[ - FORTRAN_HAVE_C_LONG_DOUBLE="no" - AC_MSG_CHECKING([if Fortran C_LONG_DOUBLE is valid]) + HAVE_C_LONG_DOUBLE_FORTRAN="no" + AC_MSG_CHECKING([if Fortran compiler supports intrinsic C_LONG_DOUBLE]) + AC_LINK_IFELSE([AC_LANG_SOURCE([ + PROGRAM main + USE ISO_C_BINDING + REAL(KIND=C_LONG_DOUBLE) :: d + END PROGRAM + ])], [AC_MSG_RESULT([yes]) + HAVE_C_LONG_DOUBLE_FORTRAN="yes"], + [AC_MSG_RESULT([no])]) +]) + +dnl Check if C_LONG_DOUBLE is different from C_DOUBLE + +if test "X$FORTRAN_HAVE_C_LONG_DOUBLE" = "Xyes"; then +AC_DEFUN([PAC_PROG_FC_C_LONG_DOUBLE_EQ_C_DOUBLE],[ + FORTRAN_C_LONG_DOUBLE_IS_UNIQUE="no" + AC_MSG_CHECKING([if Fortran C_LONG_DOUBLE is different from C_DOUBLE]) AC_COMPILE_IFELSE([AC_LANG_SOURCE([ MODULE type_mod @@ -156,9 +171,10 @@ AC_DEFUN([PAC_PROG_FC_HAVE_C_LONG_DOUBLE],[ CALL h5t(d) END PROGRAM main ])], [AC_MSG_RESULT([yes]) - FORTRAN_HAVE_C_LONG_DOUBLE="yes"], + FORTRAN_C_LONG_DOUBLE_IS_UNIQUE="yes"], [AC_MSG_RESULT([no])]) ]) +fi dnl Checking if the compiler supports the required Fortran 2003 features and dnl disable Fortran 2003 if it does not. |