From 71ed7ca0b8d905302b82af60653e9c13569286b0 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Sun, 14 Sep 2014 00:12:03 +0200
Subject: AX_LIB_HDF5: add support for recognizing HDF5 built with ccache

The ax_lib_hdf5.m4 autoconf macro uses awk to determine which compiler was used
to build HDF5. This fails if HDF5 was built using ccache because "ccache" is
then used as HDF5_CC instead of the actual compiler wrapped by ccache. The
attached patch fixes that.

Submitted in <https://savannah.gnu.org/patch/index.php?8450>.
---
 m4/ax_lib_hdf5.m4 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'm4/ax_lib_hdf5.m4')

diff --git a/m4/ax_lib_hdf5.m4 b/m4/ax_lib_hdf5.m4
index f4ab866..9e77b92 100644
--- a/m4/ax_lib_hdf5.m4
+++ b/m4/ax_lib_hdf5.m4
@@ -84,7 +84,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 8
+#serial 9
 
 AC_DEFUN([AX_LIB_HDF5], [
 
@@ -178,6 +178,9 @@ HDF5 support is being disabled (equivalent to --with-hdf5=no).
 
         dnl Get the actual compiler used
         HDF5_CC=$(eval $H5CC -show | $AWK '{print $[]1}')
+        if test "$HDF5_CC" = "ccache"; then
+            HDF5_CC=$(eval $H5CC -show | $AWK '{print $[]2}')
+        fi
 
         dnl h5cc provides both AM_ and non-AM_ options
         dnl depending on how it was compiled either one of
-- 
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