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From "Dan Johnson" <...@nrtc.northrop.com>
Subject RE: Building APR with Cygwin?
Date Wed, 13 Jul 2005 00:21:29 GMT

The problem is that I need to compile using MinGW under Cygwin, and
MinGW doesn't provide any of the shared memory header files (shm.h,
sys/mmap.h, sys/mman.h, etc.) so the test fails.

A quick Google shows that a few other people have had this problem
trying to build Subversion with MinGW but it doesn't look like anyone's
resolved it. Does anyone know of a successful APR build with MinGW?


Daniel M. Johnson Software Engineer | One  Hornet Way, MS 9M52/W6
Northrop Grumman Integrated Systems | El Segundo, CA 90245-2804
J-UCAS Vehicle Management Systems   | Telephone: (310) 345-5253

-----Original Message-----
From: John Vandenberg [mailto:jayvdb@gmail.com] 
Sent: Tuesday, July 12, 2005 12:37 AM
To: Dan Johnson
Cc: dev@apr.apache.org
Subject: Re: Building APR with Cygwin?

On 7/12/05, Dan Johnson <dmj@nrtc.northrop.com> wrote:
Hi Dan,

> Has anyone build APR 1.1.1 on Cygwin? I found some packages at
Cygwin's site
> but they were 0.9.5 and 0.9.6. 
> I tried building the Unix distribution directly but the configure
> dies with "decision on anonymous shared memory allocation method
failed." Is
> this a well-known problem? 

I quickly attempted this on Cygwin using the 1.1.1 & trunk code,
without any issues.  The relevant part of the log for each looks like
this on Windows XP when I generate configure using an up to date
Cygwin with `autoconf-2.5x'

checking for shmdt... yes
checking for shmctl... yes
checking for create_area... no
checking for MAP_ANON in sys/mman.h... yes
checking for /dev/zero... yes
checking for mmap that can map /dev/zero... yes
decision on anonymous shared memory allocation method... 4.4BSD-style
mmap() via
decision on namebased memory allocation method... SysV IPC shmget()

I dont know a lot about Cygwin, but I would check that out first.

What were the configure results for header sys/mman.h, function mmap,
and function munmap?


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