Timur Davydov has uploaded this change for review.

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build: make linux/if_packet.h usage optional

Check for presence of linux/if_packet.h in configure and
guard its usage with HAVE_LINUX_IF_PACKET_H.

This avoids build failures on non-Linux platforms or
environments where the header is unavailable.

Change-Id: I8a02b0676e65fa4b6191073c84e0646a2e67a010
---
M configure.ac
M include/osmo-bts/phy_link.h
2 files changed, 9 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/88/42688/1

diff --git a/configure.ac b/configure.ac
index fe69954..d18d8b3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -321,6 +321,11 @@
 AM_CONDITIONAL(ENABLE_ORTP, test "x$ENABLE_ORTP" = "xyes")
 AC_SUBST(ENABLE_ORTP)
 
+AC_CHECK_HEADER([linux/if_packet.h], [linux_if_packet_header="yes"], [])
+if test "x$linux_if_packet_header" = "xyes" ; then
+	AC_DEFINE(HAVE_LINUX_IF_PACKET_H, 1, [Define if we found linux/if_packet.h])
+fi
+
 # Generate manuals
 AC_ARG_ENABLE(manuals,
 	[AS_HELP_STRING(
diff --git a/include/osmo-bts/phy_link.h b/include/osmo-bts/phy_link.h
index 719c329..8692889 100644
--- a/include/osmo-bts/phy_link.h
+++ b/include/osmo-bts/phy_link.h
@@ -8,7 +8,9 @@
 #include <osmo-bts/scheduler.h>
 #include <osmo-bts/bts_trx.h>
 
+#ifdef HAVE_LINUX_IF_PACKET_H
 #include <linux/if_packet.h>
+#endif /* HAVE_LINUX_IF_PACKET_H */
 #include "btsconfig.h"
 
 
@@ -64,8 +66,10 @@
 			struct virt_um_inst *virt_um;
 		} virt;
 		struct {
+#ifdef HAVE_LINUX_IF_PACKET_H
 			/* MAC address of the PHY */
 			struct sockaddr_ll phy_addr;
+#endif /* HAVE_LINUX_IF_PACKET_H */
 			/* Network device name */
 			char *netdev_name;
 

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