libevent fails to build with libressl-devel 2.7.2

[bK4gYuRo]

Errors in the log:

:info:build In file included from sample/le-proxy.c:36:
:info:build ./openssl-compat.h:6:27: error: static declaration of 'BIO_meth_new' follows non-static declaration
:info:build static inline BIO_METHOD *BIO_meth_new(int type, const char *name)
:info:build                           ^
:info:build /opt/local/include/openssl/bio.h:338:13: note: previous declaration is here
:info:build BIO_METHOD *BIO_meth_new(int type, const char *name);
:info:build             ^
:info:build 1 error generated.
:info:build make[1]: *** [sample/le-proxy.o] Error 1
:info:build make[1]: *** Waiting for unfinished jobs....
:info:build In file included from bufferevent_openssl.c:69:
:info:build ./openssl-compat.h:6:27: error: static declaration of 'BIO_meth_new' follows non-static declaration
:info:build static inline BIO_METHOD *BIO_meth_new(int type, const char *name)
:info:build                           ^
:info:build /opt/local/include/openssl/bio.h:338:13: note: previous declaration is here
:info:build BIO_METHOD *BIO_meth_new(int type, const char *name);
:info:build             ^
:info:build 1 error generated.

[pmetzger (Perry E. Metzger)]

Do libevent's upstream maintainers claim to support libressl? If not, why should this be a supported configuration for MacPorts?

[bK4gYuRo]

What makes you think it is not supported? libevent is a dependency of tmux, and tmux (and libevent) builds and works fine on OpenBSD which has libressl only. If, following your logic, it's not supported, then it would not work on OpenBSD

[raimue (Rainer Müller)]

libevent @2.1.8 is already the latest stable version, which does not support libressl. However, the port applies a ​patch to make it compatible.

Looks like this upstream commit needs to be folded into the local patch: ​https://github.com/libevent/libevent/commit/28b8075400c70b2d2da2ce07e590c2ec6d11783d

[pmetzger (Perry E. Metzger)]

"If, following your logic, it's not supported, then it would not work on OpenBSD"

The OpenBSD support it in that instance. As raimue has pointed out, libevent itself does not support it, though there are patches that will make it work.

[jerryyhom]

I just encountered this issue. The upstream patch referenced by Rainer has not been folded in yet. I can submit a PR, but I see two options.

1. combine upstream patch with existing patch - to replace it
2. use upstream patch as is - in addition to existing patch

Is there a preference?

[jerryyhom]

In c7f43dae1e845f2f861cc5300baa1bf0b5ef22e7/macports-ports (master):

libevent: fold in upstream patch for libressl 2.7

close: #56400