Hi Tom and Maria,

I’ve managed to put together a macOS runner. It is functioning, although the script is a bit messy.
https://github.com/myzhang1029/bird/blob/master/.github/workflows/ci.yml

About testing on a Darwin kernel, I am not sure if that would be enough, because making bird compile on a Mac is also related to how Apple chooses to name constants like TCPOPT_SIGNATURE in the vendored header files.

Kind regards,
Maiyun Zhang (he/him)

Le 13 mars 2024 à 06:27, Tom Herbers <bird@tomherbers.de> a écrit :

Hi,

GitHub offers free macOS Runners via GitHub Actions for all public
repositories [1].

That would be a legal of testing on macOS.

Now, of course, someone would have to put together a suitable workflow.


Kind regards,
Tom


[1]
https://docs.github.com/de/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories

Am Mittwoch, dem 13.03.2024 um 11:11 +0100 schrieb Maria Matejka via
Bird-users:
 
Hello Zhang,
 
thank you for your contribution. This looks includable, however I'd
like to ask you about maintainability of this patch. It may quite
quickly rot away. Is there an easy (and legal) way to have automatic
macOS build and basic run testing, without a need to maintain a
physical Mac?
 
 
Thanks,
 Maria
 
 
On 2024-03-13 03:02, Zhang Maiyun via Bird-users wrote:
 
 
 
Dear all,

This patch makes bird build and run on macOS with `sysconfig=bsd`.
It is mainly modifying preprocessor directives.

I have tested it on macOS 14.3.1 and it is able to establish BGP
sessions
and at least exchange IPv4 routes.

Kind regards,
Maiyun Zhang

Signed-off-by: Zhang Maiyun <me@maiyun.me>
---
 sysdep/bsd/krt-sock.c | 6 ++++++
 sysdep/bsd/sysio.h    | 6 +++++-
 sysdep/unix/io.c      | 3 +++
 sysdep/unix/random.c  | 2 +-
 4 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/sysdep/bsd/krt-sock.c b/sysdep/bsd/krt-sock.c
index d13e20a3..afb66cb3 100644
--- a/sysdep/bsd/krt-sock.c
+++ b/sysdep/bsd/krt-sock.c
@@ -635,6 +635,7 @@ krt_read_route(struct ks_msg *msg, struct
krt_proto *p, int scan)
     krt_got_route_async(p, e, new, src);
 }
 
+#ifndef __APPLE__
 static void
 krt_read_ifannounce(struct ks_msg *msg)
 {
@@ -661,6 +662,7 @@ krt_read_ifannounce(struct ks_msg *msg)
 
   DBG("KRT: IFANNOUNCE what: %d index %d name %s\n", ifam-
ifan_what, ifam->ifan_index, ifam->ifan_name);
 }
+#endif
 
 static void
 krt_read_ifinfo(struct ks_msg *msg, int scan)
@@ -725,7 +727,9 @@ krt_read_ifinfo(struct ks_msg *msg, int scan)
 
   if (fl & IFF_UP)
     f.flags |= IF_ADMIN_UP;
+#ifndef __APPLE__
   if (ifm->ifm_data.ifi_link_state != LINK_STATE_DOWN)
+#endif
     f.flags |= IF_LINK_UP;          /* up or unknown */
   if (fl & IFF_LOOPBACK)            /* Loopback */
     f.flags |= IF_MULTIACCESS | IF_LOOPBACK | IF_IGNORE;
@@ -873,9 +877,11 @@ krt_read_msg(struct proto *p, struct ks_msg
*msg, int scan)
     case RTM_CHANGE:
       krt_read_route(msg, (struct krt_proto *)p, scan);
       break;
+#ifndef __APPLE__
     case RTM_IFANNOUNCE:
       krt_read_ifannounce(msg);
       break;
+#endif
     case RTM_IFINFO:
       krt_read_ifinfo(msg, scan);
       break;
diff --git a/sysdep/bsd/sysio.h b/sysdep/bsd/sysio.h
index b6b42b1e..85081c07 100644
--- a/sysdep/bsd/sysio.h
+++ b/sysdep/bsd/sysio.h
@@ -32,7 +32,7 @@
 #endif
 
 
-#ifdef __NetBSD__
+#if defined(__NetBSD__) || defined(__APPLE__)
 
 #ifndef IP_RECVTTL
 #define IP_RECVTTL 23
@@ -49,6 +49,10 @@
 #define TCP_MD5SIG TCP_SIGNATURE_ENABLE
 #endif
 
+#ifdef __APPLE__
+#define TCP_MD5SIG TCPOPT_SIGNATURE
+#endif
+
 
 #undef  SA_LEN
 #define SA_LEN(x) (x).sa.sa_len
diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index 9b499020..81e09888 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -12,6 +12,9 @@
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
 #endif
+#ifdef __APPLE__
+#define __APPLE_USE_RFC_3542
+#endif
 
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/sysdep/unix/random.c b/sysdep/unix/random.c
index 4e64e56b..7d68c482 100644
--- a/sysdep/unix/random.c
+++ b/sysdep/unix/random.c
@@ -16,7 +16,7 @@
 #include "sysdep/config.h"
 #include "nest/bird.h"
 
-#ifdef HAVE_GETRANDOM
+#if defined(HAVE_GETRANDOM) || (defined(__APPLE__) &&
defined(HAVE_GETENTROPY))
 #include <sys/random.h>
 #endif