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emacs-24.2.93 build problems
From: |
Nelson H. F. Beebe |
Subject: |
emacs-24.2.93 build problems |
Date: |
Sat, 2 Mar 2013 16:00:47 -0700 (MST) |
I have spent much of today in build attempts for emacs-24.2.93 on
about 25 flavors of Unix in our lab. After a lot of restarts, I have
mostly succeeded, except for two platforms: OpenBSD 4.9 on x86, and
MirOS 10 on x86. On those two systems, compilation of src/sysdep.c
fails like this:
sysdep.c: In function 'list_system_processes':
sysdep.c:2656: error: 'KERN_PROC' undeclared (first use in this function)
sysdep.c:2656: error: (Each undeclared identifier is reported only once
sysdep.c:2656: error: for each function it appears in.)
sysdep.c:2684: error: 'struct kinfo_proc' has no member named 'p_pid'
Both systems previously had emacs-24.1 installed. A similar build of
emacs-24.2.93 on OpenBSD 5.1 was successful.
Examination of the source code reveals the problem: function
list_system_processes() is delving into kernel data structures defined
in <kvm.h> which in turn includes <sys/sysctl.h>, and that header file
defines kernel data structures that list_system_processes() attempts
to reference.
In OpenBSD 5.1, p_pid is in struct kinfo_proc, but on the other two
systems, p_pid is instead in struct kinfo_proc2. There is no support
code in list_system_processes() for that alternative, and no test for
it in configure either.
By contrast, the emacs-24.1 version of list_system_processes() has no
reference to the kinfo_proc* structs.
On request, I can provide off-list pointers to copies of sysctl.h for
the two failing systems.
Although some might argue that because OpenBSD 5.x is available,
OpenBSD 4.x is no longer of interest, I do not hold that view. Emacs
has been around now for almost 40 years, and for the last 30 or so,
its portability has been held in high regard. As a result, it is
available on, or has been ported to, all common desktop and mobile
platforms, even non-Unix ones. I prefer to see that portability
continue. Emacs is what makes computers usable in much the same way,
no matter what the underlying O/S platform is.
-------------------------------------------------------------------------------
- Nelson H. F. Beebe Tel: +1 801 581 5254 -
- University of Utah FAX: +1 801 581 4148 -
- Department of Mathematics, 110 LCB Internet e-mail: address@hidden -
- 155 S 1400 E RM 233 address@hidden address@hidden -
- Salt Lake City, UT 84112-0090, USA URL: http://www.math.utah.edu/~beebe/ -
-------------------------------------------------------------------------------
- emacs-24.2.93 build problems,
Nelson H. F. Beebe <=
- Re: emacs-24.2.93 build problems, Paul Eggert, 2013/03/02
- Re: emacs-24.2.93 build problems, Glenn Morris, 2013/03/04
- Re: emacs-24.2.93 build problems, Jérémie Courrèges-Ang las, 2013/03/04
- Re: emacs-24.2.93 build problems, Glenn Morris, 2013/03/04
- Re: emacs-24.2.93 build problems, Jérémie Courrèges-Ang las, 2013/03/05
- Re: emacs-24.2.93 build problems (on OpenBSD), Jérémie Courrèges-Ang las, 2013/03/05
- Re: emacs-24.2.93 build problems (on OpenBSD), Glenn Morris, 2013/03/05
- Re: emacs-24.2.93 build problems, Glenn Morris, 2013/03/05
- list-system-processes on OpenBSD [was Re: emacs-24.2.93 build problems], Glenn Morris, 2013/03/05
- Re: list-system-processes on OpenBSD [was Re: emacs-24.2.93 build problems], Paul Eggert, 2013/03/05