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Mail Archives: cygwin/2023/08/11/09:37:04

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To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: Weird (path) problems with cygwin test release
3.5.0-0.384.g9939aa7d0945.x86_64 ...
Thread-Topic: Weird (path) problems with cygwin test release
3.5.0-0.384.g9939aa7d0945.x86_64 ...
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Date: Fri, 11 Aug 2023 13:36:35 +0000
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From: "Mainz, Roland via Cygwin" <cygwin AT cygwin DOT com>
Reply-To: "Mainz, Roland" <Roland DOT Mainz AT rovema DOT de>
Sender: "Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id 37BDb4e4022437

Hi!

----

Cygwin test release 3.5.0-0.384.g9939aa7d0945.x86_64 has some weird path problems with network filesystems on Windows 10. Previous stable version of Cygwin (4.7.x ?) worked fine.

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 ----

Even more weird is that if I try to debug this via strace I get this:
---- snip ----
$ strace -o mylog.log /home/rmainz/tmp/try10_rde_new_rds/Dependencies/win/qt/qt_5_15_2/Tools/mingw810_64/bin/c++ $PWD/x.cpp
strace.exe: error creating process C:\cygwin64\home\rmainz\tmp\try10_rde_new_rds\Dependencies\win\qt\qt_5_15_2\Tools\mingw810_64\bin\c++, (error 2)
---- snip ----

Note that the Windows-style path doesn't start with H:\tmp as I would expect - it starts with C:\cygwin64\, followed by the bind mount name (\home\rmainz).

----

Bye,
Roland

i. A. Roland Mainz
Entwickler Steuerungssoftware
TEE

ROVEMA GmbH

Industriestr. 1, 35463
Fernwald, Germany
 T  +49 641 409 528
 @ Roland DOT Mainz AT rovema DOT de
 
www.rovema.com


Rovema
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ROVEMA GmbH
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