extra: Define _GNU_SOURCE to get members of tcphdr&ucphdr

The source uses linux names for members of tcphdr. For example
"source" instead of "th_sport", ... musl libc's headers need
_GNU_SOURCE defined in order to expose these.

Signed-off-by: Felix Janda <felix.janda@posteo.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/src/extra/tcp.c b/src/extra/tcp.c
index bf161aa..d1cd79d 100644 (file)
--- a/src/extra/tcp.c
+++ b/src/extra/tcp.c
@@ -15,6 +15,7 @@
 #include <arpa/inet.h>
 #include <netinet/ip.h>
 #include <netinet/ip6.h>
+#define _GNU_SOURCE
 #include <netinet/tcp.h>
 
 #include <libnetfilter_queue/libnetfilter_queue.h>

diff --git a/src/extra/udp.c b/src/extra/udp.c
index 6e6baed..8c44a66 100644 (file)
--- a/src/extra/udp.c
+++ b/src/extra/udp.c
@@ -14,6 +14,7 @@
 #include <arpa/inet.h>
 #include <netinet/ip.h>
 #include <netinet/ip6.h>
+#define _GNU_SOURCE
 #include <netinet/udp.h>
 
 #include <libnetfilter_queue/libnetfilter_queue.h>