[BRLTTY] Issues while building BrailleTTY on Windows

[Vasundhara Pant]

Resending this as the previous mail was rejected as I had not subscribed to the mailing list.

Thanks,
Vasundhara
________________________________
From: Vasundhara Pant
Sent: Friday, May 24, 2024 4:33 PM
To: BRLTTY at brltty.app <BRLTTY at brltty.app>
Cc: Shivaramkrishna Ramalaxmaiah Tirumala <Shivaramkrishna.Tirumala at microsoft.com>
Subject: Issues while building BrailleTTY on Windows

Hi team.
I am Vasundhara, a software developer at Microsoft working on Narrator team. We use the BrailleTTY Open source code in Narrator to interact with Braille devices. Currently, we are trying to migrate our build process to Onebranch (Azure DevOps build system for Windows components). For that, we have to build the BrailleTTY code using msys1 (as that is what it currently supports).
I was trying out the local build of BrailleTTY to understand the entire process and faced issues in the mkwin script. The steps I followed were:


  1.
 Install MINGW having latest GCC 9.2.0.
  2.
Install Python version 3.4 at the default location, (Note:It should be a version older than 3.5, problem here (Building on Windows 10 using mingw32 · Issue #2751 · statsmodels/statsmodels · GitHub<https://github.com/statsmodels/statsmodels/issues/2751>)). I have used Python 3.4.4 Windows x86 MSI installer to install python.
  3.
Checkout the brltty via git clone from here (https://github.com/brltty/brltty.git)
  4.
Run msys (Windows batch file) in admin mode from the location C:\MinGW\msys\1.0.
  5.
 Go to Windows directory in brltty (./brltty/Windows)
  6.
Run ./winSetup from Windows Directory
  7.
cd ..
  8.
Run ./autogen in the main root directory of the checked out code (brltty)
  9.
Again go back to Windows directory. (brltty/Windows)
  10.
mkwin -u libusb-1.0 -P /C/Python34 ..

In the last step, while running mkwin, I'm getting the following output:
[cid:b39fb307-a6c4-489d-9c17-27c67d994f9d]

which has the warnings:
brlapi.auto.c: In function '__Pyx_ImportType_3_0_10':
brlapi.auto.c:33110:13: warning: unknown conversion type character 'z' in format [-Wformat=]
33110 |             "%s.%s size changed, may indicate binary incompatibility. "
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
brlapi.auto.c:33111:24: note: format string is defined here
33111 |             "Expected %zd from C header, got %zd from PyObject",
      |                        ^
brlapi.auto.c:33110:13: warning: unknown conversion type character 'z' in format [-Wformat=]
33110 |             "%s.%s size changed, may indicate binary incompatibility. "
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
brlapi.auto.c:33111:47: note: format string is defined here
33111 |             "Expected %zd from C header, got %zd from PyObject",
      |                                               ^
brlapi.auto.c:33110:13: warning: too many arguments for format [-Wformat-extra-args]
33110 |             "%s.%s size changed, may indicate binary incompatibility. "


I checked the location C:\Users\<username>\AppData\Local\Temp but could not find any brltty-mkwin folder generated there. Can you please help me understand these warnings and point out if I'm doing anything wrong in the process? It'll be really helpful for us.

Thanks & Regards,
Vasundhara Pant
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