From c4a3b31278e0d52292c76f9fbf6f3c24fb1b2157 Mon Sep 17 00:00:00 2001
From: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Date: Tue, 7 May 2019 15:33:48 +0200
Subject: [PATCH] configure: don't assume /usr/include/ is the header location

It doesn't have to be. In order to check if the system
header is available we'll now to try to compile a C program
that includes it.

Change-Id: Ie46c20dab5e96da746650bba1d5dbd0fc32ecec9
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453561
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
---
 configure | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 6ecb338fa..e19971156 100755
--- a/configure
+++ b/configure
@@ -95,6 +95,7 @@ declare -A CONFIG
 source CONFIG.sh
 rm CONFIG.sh
 
+BUILD_CMD="${CC:-cc} -o /dev/null -x c $CPPFLAGS $CFLAGS $LDFLAGS"
 
 function check_dir() {
 	arg="$1"
@@ -471,7 +472,8 @@ if [[ "${CONFIG[ISAL]}" = "y" ]]; then
 fi
 
 if [[ "${CONFIG[REDUCE]}" = "y" ]]; then
-	if [ ! -f /usr/include/libpmem.h ]; then
+	if ! echo -e '#include <libpmem.h>\nint main(void) { return 0; }\n' \
+		| $BUILD_CMD -lpmem - 2>/dev/null; then
 		echo --with-reduce requires libpmem.
 		echo Please install then re-run this script.
 		exit 1