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Date:	Mon, 14 Aug 2023 19:29:37 +0200
Message-ID:	<CAKAoaQnvSZDD6mitFsdD==aOi0n9h3JSAEiJo8QXCRAf58H_Sw@mail.gmail.com>
Subject:	Re: Weird (path) problems with cygwin test release
	3.5.0-0.384.g9939aa7d0945.x86_64 ...
To:	cygwin AT cygwin DOT com
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From:	Roland Mainz via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Roland Mainz <roland DOT mainz AT nrubsig DOT org>
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On Mon, Aug 14, 2023 at 6:25 PM Roland Mainz <roland DOT mainz AT nrubsig DOT org> wrote:
> On Mon, Aug 14, 2023 at 12:21 PM Corinna Vinschen via Cygwin
> <cygwin AT cygwin DOT com> wrote:
> > On Aug 11 13:36, Mainz, Roland via Cygwin wrote:
[snip]
> > > In our case we have a project with both custom binaries and sources
> > > both hosted on the filesystem as /home/rmainz/ (i.e. filesystem
> > > mounted on H:, and then bind mount to /home/rmainz).
> > >
> > > After updating Cygwin to 3.5.0-0.384.g9939aa7d0945.x86_64 the build
> > > now fails *IF* I access the binaries with their full absolute path AND
> > > the sources with their absolute path:
> > > ---- snip ----
> > > $ cd /home/rmainz/tmp/try10_rde_new_rds/RDE-Development/build_windows4/tmp
> > > $ ls -l x.cpp
> > > -rw-r--r-- 1 rmainz rovdevel 110 Aug 11 15:32 x.cpp
> > > $ /home/rmainz/tmp/try10_rde_new_rds/Dependencies/win/qt/qt_5_15_2/Tools/mingw810_64/bin/c++ $PWD/x.cpp
> > > c++.exe: error: /home/rmainz/tmp/try10_rde_new_rds/RDE-Development/build_windows4/tmp/x.cpp: No such file or directory
> > > c++.exe: fatal error: no input files
> > > compilation terminated.
> > > ---- snip ----
> >
> > I can't reproduce this:
> >
> > $ net use H: <blah>
>
> Is <blah> Samba, CIFS or NFS ?
>
> > $ mount -o exec H: /home/rmainz
> > $ cd /home/rmainz/tmp
> > $ cp /bin/cat.exe .
> > $ mkdir baz
> > $ echo foo > baz/bar
> > $ /home/rmainz/tmp/cat $PWD/baz/bar
> > foo
>
> Grumpf... ;-(
>
> ... I'm still seeing this problem.
> The sources we are building are proprietary (sorry), but I can
> reproduce this with both CITI's NFSv4.1 and Windows 10 builtin NFSv3
> clients.
>
> Setup for Windows's NFSv3 client on Cygwin is simple:
> 1. Install Windows 10 builtin NFSv3 client via "Programs&Features" (I
> think there is a way to do that in a scripted way, but I still didn't
> had time to figure that out)
>
> 2. Export NFSv3 directory 10.49.20.131:/export/home/rmainz (rmainz has
> uid=1616, gid=1616) on a Linux NFS-Server (RHEL, Debian etc.)
>
> 3. Mount NFSv3 filesystem in Windows 10 in a Cygwin terminal, with
> default user uid=1616, gid=1616 like this:
> ---- snip ----
> $ regtool -i -s set
> '/HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/ClientForNFS/CurrentVersion/Default/AnonymousUID'
> 1616
> $ regtool -i -s set
> '/HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/ClientForNFS/CurrentVersion/Default/AnonymousGID'
> 1616
> $ /cygdrive/c/Windows/system32/mount -o anon
> '\\10.49.20.131\export\home\rmainz' H:
> ---- snip ----
>
> 4. After that I started building our sources with Cygwin 3.4.7
> (works), then closed all Cygwin windows etc., and installed Cygwin
> 3.5.0-0.388.g1a646ad7970a.x86_64 (reboot or not reboot - doesn't
> matter). After that the build fails.
>
> - See https://rovema.kpaste.net/e5774d8077 build log on Cygwin 3.4.7,
> which works without problems
> - See https://rovema.kpaste.net/1a3b98e0b for the build failure on
> Cygwin 3.5.0-0.388.g1a646ad7970a.x86_64
> - The horrifying abdomination ("buildrdecygwin.bash") used to build
> the mess can be found at https://rovema.kpaste.net/e98be

It seems the issue can be reduced to this on  Cygwin
3.5.0-0.388.g1a646ad7970a.x86_64 - c++ with H:/path/.../x.cpp works,
c++ with  /home/rmainz/path/.../x.cpp does not.

This definitely *WORKED* in Cygwin 3.4.7:

Example:
---- snip ----
$ uname -a
CYGWIN_NT-10.0-19045 WINGRENDEL01 3.5.0-0.388.g1a646ad7970a.x86_64
2023-08-11 14:14 UTC x86_64 Cygwin

$ cat /etc/fstab
# /etc/fstab
#
#    This file is read once by the first process in a Cygwin process tree.
#    To pick up changes, restart all Cygwin processes.  For a description
#    see https://cygwin.com/cygwin-ug-net/using.html#mount-table

# This is default anyway:
none /cygdrive cygdrive binary,posix=0,user 0 0
H:      /home/rmainz    none    binary,posix=0,user     0       0


$ mount -a

$ /home/rmainz/tmp/winnfstest/hummingbirdnfstest1/try10_rde_new_rds/Dependencies/win/qt/qt_5_15_2/Tools/mingw810_64/bin/c++
/home/rmainz/tmp/winnfstest/hummingbirdnfstest1/try10_rde_new_rds/RDE-Development/build_windows5/tmp/x.cpp
c++.exe: error:
/home/rmainz/tmp/winnfstest/hummingbirdnfstest1/try10_rde_new_rds/RDE-Development/build_windows5/tmp/x.cpp:
No such file or directory
c++.exe: fatal error: no input files
compilation terminated.

$ /home/rmainz/tmp/winnfstest/hummingbirdnfstest1/try10_rde_new_rds/Dependencies/win/qt/qt_5_15_2/Tools/mingw810_64/bin/c++
H:/tmp/winnfstest/hummingbirdnfstest1/try10_rde_new_rds/RDE-Development/build_windows5/tmp/x.cpp

$ ./a
Hello World!
---- snip ----

/proc/cygwin/h/path/... does not work either...

Does anyone have any idea what changed between Cygwin 3.4.7 and Cygwin
3.5.0-0.388.g1a646ad7970a.x86_64 in this case ?

----

Bye,
Roland
-- 
  __ .  . __
 (o.\ \/ /.o) roland DOT mainz AT nrubsig DOT org
  \__\/\/__/  MPEG specialist, C&&JAVA&&Sun&&Unix programmer
  /O /==\ O\  TEL +49 641 3992797
 (;O/ \/ \O;)

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