From 5742221eb2c116040b60e9b52783fd3cdce75986 Mon Sep 17 00:00:00 2001
From: Anthony Scemama <scemama@irsamc.ups-tlse.fr>
Date: Mon, 16 Jan 2023 19:26:52 +0100
Subject: [PATCH] If header is not found, try pkgconfig

---
 configure.ac | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 6da34ff..2cb9468 100644
--- a/configure.ac
+++ b/configure.ac
@@ -134,11 +134,13 @@ AS_IF([test "x$with_hdf5" == "xno"], [
            HDF5_LIBS="-L$HDF5_PATH/lib -lhdf5"
            HDF5_CFLAGS="-I$HDF5_PATH/include"
            AC_DEFINE([HAVE_HDF5], 1, [Define to 1 if HDF5 is available]) ],
-      [
+      [ # else
            AC_CHECK_LIB([hdf5], [H5Fcreate], [ HDF5_LIBS="-lhdf5" ], [
              PKG_CHECK_MODULES([HDF5], [hdf5 >= 1.8])
-           ] )
-           AC_CHECK_HEADER([hdf5.h], [HDF5_CFLAGS=""], [AC_MSG_ERROR([HDF5 header not found]) ])
+           ])
+           AC_CHECK_HEADER([hdf5.h], [HDF5_CFLAGS=""], [
+             [ PKG_CHECK_MODULES([HDF5], [hdf5 >= 1.8])
+           ])
            AC_DEFINE([HAVE_HDF5], 1, [Define to 1 if HDF5 is available])
       ])