Fix building on systems with musl (#10)

musl has its own definition of struct ethhdr, so only include
netinet/if_ether.h on systems with GLIBC.  For the ARPHDR constants, we
must include linux/if_arp.h instead.

diff --git a/src/if-linux.c b/src/if-linux.c
index fd4727852d96b16d1fc9a3b80eec06cbd6334680..3ee6c5c9d642f9e186f2751c67e69be5246c9f3d 100644 (file)
--- a/src/if-linux.c
+++ b/src/if-linux.c
@@ -46,11 +46,19 @@
 
 #include <arpa/inet.h>
 #include <net/if.h>
-#include <netinet/if_ether.h>
 #include <netinet/in_systm.h>
 #include <netinet/in.h>
 #include <net/route.h>
 
+/* musl has its own definition of struct ethhdr, so only include
+ * netinet/if_ether.h on systems with GLIBC.  For the ARPHRD constants,
+ * we must include linux/if_arp.h instead. */
+#if defined(__GLIBC__)
+#include <netinet/if_ether.h>
+#else
+#include <linux/if_arp.h>
+#endif
+
 #include <errno.h>
 #include <fcntl.h>
 #include <ctype.h>