From 5300c3214be510cbc16752fe9b9eabbb4fd683bb Mon Sep 17 00:00:00 2001
From: Ryan Mulhall <35538242+rem1776@users.noreply.github.com>
Date: Thu, 22 Feb 2024 10:17:27 -0500
Subject: [PATCH] fix: autotools check for HDF5 floating point exceptions
 (#1455)

---
 configure.ac | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/configure.ac b/configure.ac
index 223733b9f..cd6449372 100644
--- a/configure.ac
+++ b/configure.ac
@@ -259,6 +259,21 @@ GX_FC_CHECK_MOD([netcdf], [], [], [AC_MSG_ERROR([Can't find the netCDF Fortran m
 GX_FORTRAN_SEARCH_LIBS([nf90_create], [netcdff], [use netcdf], [iret = nf90_create('foo.nc', 1, ncid)], [],
   [AC_MSG_ERROR([Can't find the netCDF Fortran library.  Set LDFLAGS/LIBS])])
 
+# Check if we get a floating point exception with netcdf
+# this will only get triggered if you have FPE traps enabled via FCFLAGS
+AC_MSG_CHECKING([if HDF5 version causes floating point exceptions with set flags])
+AC_RUN_IFELSE([AC_LANG_PROGRAM([], [[
+      use netcdf
+      integer i, j
+      j = nf90_open("test.nc", NC_WRITE, i)
+]])], [hdf5_fpe_bug=no], [hdf5_fpe_bug=yes])
+AC_MSG_RESULT([$hdf5_fpe_bug])
+if test $hdf5_fpe_bug = yes; then
+  AC_MSG_ERROR([The HDF5 version used to build netcdf is incompatible with the set FCFLAGS. dnl
+NetCDF must be built with a HDF5 version other than 1.14.3 to support floating point exception traps.])
+fi
+
+
 # Check if Fortran compiler has the Class, Character array assign bug
 GX_FC_CLASS_CHAR_ARRAY_BUG_CHECK()