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Re: [PATCH 1/3] Detect GDB is in cygwin
- From: Christopher Faylor <cgf-use-the-mailinglist-please at sourceware dot org>
- To: gdb-patches at sourceware dot org, Yao Qi <yao at codesourcery dot com>, Eli Zaretskii <eliz at gnu dot org>
- Date: Sat, 3 Aug 2013 00:54:52 -0400
- Subject: Re: [PATCH 1/3] Detect GDB is in cygwin
- References: <1375087546-22591-1-git-send-email-yao at codesourcery dot com> <1375087546-22591-2-git-send-email-yao at codesourcery dot com> <83txjdxtpd dot fsf at gnu dot org> <51F786CB dot 3020700 at codesourcery dot com> <83a9l4xdst dot fsf at gnu dot org> <51FA137B dot 6070207 at codesourcery dot com>
On Thu, Aug 01, 2013 at 03:51:23PM +0800, Yao Qi wrote:
>On 07/30/2013 11:33 PM, Eli Zaretskii wrote:
>> There's no need to probe that at configure time: this code can always
>> be compiled on any MS-Windows system. The compiler doesn't care and
>> doesn't check at compile time whether there is in fact
>> NtQueryInformationFile function inside the DLL.
>
>OK. If so, in configure.ac, we only need to check headers, and don't need
>AC_TRY_COMPILE at all. Here is the updated one, with several changes,
>
> - Remove AC_TRY_COMPILE,
> - Include fewer headers in mingw-htep.c, and don't have to check them
>in configure.ac.
> - Rename is_in_cygwin to using_cygwin_pty,
This patch relies on low-level, unadvertised properties of the Cygwin DLL.
Are you sure it doesn't detect a cygwin pipe as a pty?
cgf