Bug 601834 – app-crypt/gpgme-1.8.0-r1[python]: /usr/include/signal.h:69:42: error: use of undeclared identifier 'NSIG'

• Status: RESOLVED FIXED
• Product: Gentoo/Alt

[Description Guilherme Amadio 2016-12-06 16:26:38 UTC]

On macOS Sierra, when USE=python is enabled, there seems to be a problem in configuration that leads to the following error:

In file included from helpers.c:30:
In file included from /Library/Gentoo/usr/include/python2.7/Python.h:156:
In file included from /Library/Gentoo/usr/include/python2.7/pyfpe.h:129:
/usr/include/signal.h:69:42: error: use of undeclared identifier 'NSIG'
extern __const char *__const sys_signame[NSIG];
                                         ^
/usr/include/signal.h:70:42: error: use of undeclared identifier 'NSIG'
extern __const char *__const sys_siglist[NSIG];
                                         ^

As a workaround, it's possible to use

$ CFLAGS='-D_DARWIN_C_SOURCE' emerge gpgme

to avoid the problem of 'NSIG' not being defined when including signal.h.

Reproducible: Always

[Comment 1 Fabian Groffen 2017-01-03 09:26:21 UTC]

macports does a similar trick

[Comment 2 Guilherme Amadio 2017-03-16 03:39:30 UTC]

I've applied the workaround to the tree:

commit 797a6d141df1134691a85d13ec1e6db091eaf57b
Author: Guilherme Amadio <[e-mail]>
Date:   Thu Mar 16 00:34:43 2017 -0300

    app-crypt/gpgme: Fix bug 601834 on macOS
    
    Package-Manager: Portage-2.3.4, Repoman-2.3.2

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=797a6d141df1134691a85d13ec1e6db091eaf57b