[Mesa-dev] Compiling llvm windows name mangled

Jason Anderssen JAnderssen at exactal.com
Wed Dec 10 18:46:04 PST 2014


Thank you,

I will investigate if I can get a windows build to work, and see how difficult it is, as we kind of want to have a single process in windows to load both OpenGL, and Mesa3D at the sometime, and the ability to use either simultaneously.

Cheers
Jason

From: Jose Fonseca <jfonseca at vmware.com<mailto:jfonseca at vmware.com>>
Date: Wed, 10 Dec 2014 14:18:08 +0000
To: Jason Anderssen <janderssen at exactal.com<mailto:janderssen at exactal.com>>, "mesa-dev at lists.freedesktop.org<mailto:mesa-dev at lists.freedesktop.org>" <mesa-dev at lists.freedesktop.org<mailto:mesa-dev at lists.freedesktop.org>>
Subject: RE: Compiling llvm windows name mangled


I never tried, but it doesn't surprise that ​USE_MGL_NAMESPACE doesn't work properly on Windows.


At very least the src/mesa/drivers/windows/gdi and src/gallium/targets/libgl-gdi targets will fail because the .DEF files there explicitly request the non-mangled symbols.


Not sure if src/mesa/drivers/osmesa will produce something useful. You can ask scons to only build osmesa by passing "scons osmesa .."

​


That said, there's little to zero merit in USE_MGL_NAMESPACE on Windows because on Windows it's fine to have different DLLs exporting the same symbols, since unlike Unixes, DLLs exports are not dumped into a global namespace.


Jose


________________________________
From: mesa-dev <mesa-dev-bounces at lists.freedesktop.org<mailto:mesa-dev-bounces at lists.freedesktop.org>> on behalf of Jason Anderssen <JAnderssen at exactal.com<mailto:JAnderssen at exactal.com>>
Sent: 09 December 2014 21:45
To: mesa-dev at lists.freedesktop.org<mailto:mesa-dev at lists.freedesktop.org>
Subject: [Mesa-dev] Compiling llvm windows name mangled

Hi All,

I am trying to compile osmesa on linux with llvm for win32.  I added the CFLAGS += -DUSE_MGL_NAMESPACE to the environment of the SConstruct, and the build process seems to be ok until the end when it tries to link the opengl32.dll, basically a lot of symbol not defined errors.
Was wondering what is the correct way to build this mangled version of the dll?, or what step have I missed.

The instructions on building the mesa3d dll that I follow is from this link http://qt-project.org/wiki/Cross-compiling-Mesa-for-Windows<https://urldefense.proofpoint.com/v2/url?u=http-3A__qt-2Dproject.org_wiki_Cross-2Dcompiling-2DMesa-2Dfor-2DWindows&d=AAMFAg&c=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEs&r=zfmBZnnVGHeYde45pMKNnVyzeaZbdIqVLprmZCM2zzE&m=6Ge3DEjWspM0_R8wmG4D9XUdqs4zKcdsmCWMwnnpm3w&s=azooVAijwKtW_999Prr91rlFVONWeD5zHoI2iIRRK80&e=>

Cheers
Jason Anderssen.
Internet Email Confidentiality Footer: This email and any files transmitted with it contain privileged/confidential information intended for the addressee. Neither the confidentiality of nor any privilege in the email is waived, lost or destroyed by reason that it has been transmitted other than to the addressee. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message, and notify us immediately.
Internet Email Confidentiality Footer: This email and any files transmitted with it contain privileged/confidential information intended for the addressee. Neither the confidentiality of nor any privilege in the email is waived, lost or destroyed by reason that it has been transmitted other than to the addressee. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message, and notify us immediately.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/mesa-dev/attachments/20141211/a2ae21c7/attachment.html>


More information about the mesa-dev mailing list