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-rw-r--r--mdk-stage1/dns.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/mdk-stage1/dns.c b/mdk-stage1/dns.c
index d1e67c78d..266864d37 100644
--- a/mdk-stage1/dns.c
+++ b/mdk-stage1/dns.c
@@ -23,7 +23,7 @@
// dietlibc can do hostname lookup, whereas glibc can't when linked statically :-(
-#ifdef __LIBC_DIETLIBC__
+#if defined(__dietlibc__)
#include <unistd.h>
#include <string.h>
@@ -67,14 +67,13 @@ char * mygethostbyaddr(char * ipnum)
struct hostent * host;
if (!inet_aton(ipnum, &in))
return NULL;
- host = gethostbyaddr(&in, strlen((void *) &in), AF_INET);
+ host = gethostbyaddr(&in.s_addr, sizeof(in.s_addr) /* INADDRSZ */, AF_INET);
if (host && host->h_name)
return host->h_name;
return NULL;
}
-
-#else // __LIBC_DIETLIBC__
+#elif defined(__GLIBC__)
#include <alloca.h>
#include <sys/socket.h>
@@ -210,4 +209,8 @@ int mygethostbyname(char * name, struct in_addr * addr) {
return rc;
}
+#else
+
+#error "Unsupported C library"
+
#endif