What version of Mesa are you trying to build? Assuming you're using a version newer than 19.3 (with this change https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/986), the default LLVM discovery should be to use CMake. That means it looks for an installed LLVM in the CMake search dirs.
If you don't have https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4555, you will also need to explicitly request a static version of LLVM (-Dshared-llvm=false). -Jesse -----Original Message----- From: Federico Dossena <i...@fdossena.com> Sent: Monday, November 9, 2020 7:34 AM To: Jesse Natalie <jenat...@microsoft.com>; mesa-dev@lists.freedesktop.org Subject: Re: [EXTERNAL] [Mesa-dev] Cross-compile from Linux to Windows Thank you for your reply. That's where I got stuck on Windows, I can't get it to find LLVM. I built LLVM without problems for both x86 and x86_64 in 2 separate folders, but when I try to build mesa, even with --cmake-prefix-path, it doesn't find it, it always say "Neither a subproject directory nor a llvm.wrap file was found". I tried moving my LLVM files in the subprojects/llvm folder and that didn't fix it, I don't know what to do. Any suggestion? On 2020-11-09 16:06, Jesse Natalie wrote: > Have you tried using Meson on Windows, instead of cross-compiling? If you run > it from a Visual Studio command prompt, it should just work out of the box, > at least for x86. I believe you'll need to use a cross file for amd64, but > the only thing you'd need to specify is the host architecture. > > Though I guess if you're building LLVMPipe you'll need to point it to LLVM. > In my experience, adding "--cmake-prefix-path" to the Meson command line > should work well. > > -Jesse > > -----Original Message----- > From: mesa-dev <mesa-dev-boun...@lists.freedesktop.org> On Behalf Of > Federico Dossena > Sent: Saturday, November 7, 2020 4:14 AM > To: mesa-dev@lists.freedesktop.org > Subject: [EXTERNAL] [Mesa-dev] Cross-compile from Linux to Windows > > I'm sorry to bother you in the dev list but it seems to be the only one with > activity so it seems like the best place to ask. > > I maintain some Mesa builds for Windows. These are builds of libgl-gdi with > llvmpipe, for both x86 and x86_64; in other words, they're opengl32.dll files > that users can drop into their game/application to have software rendering > for OpenGL as a workaround for broken drivers or as a fallback for older > systems. > I've always used scons on Windows and msvc as a compiler to make these > builds, but now that scons is being deprecated I've been trying to use meson > and ninja to cross-compile from Linux (amd64) to Windows (both x86 and > x86_64) without much success. I can get regular Linux builds without issues > though. > > I tried reading the Mesa documentation on cross-compiling but it's very > minimal and it's partially obsolete so I thought it would be best to ask you > directly: how do I make these builds? Explain like I'm 5, basically. > > Thanks, > > Federico > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist > s.freedesktop.org%2Fmailman%2Flistinfo%2Fmesa-dev&data=04%7C01%7Cj > enatali%40microsoft.com%7Cb5f74e617d8f41709c6008d884c52096%7C72f988bf8 > 6f141af91ab2d7cd011db47%7C1%7C1%7C637405330339535954%7CUnknown%7CTWFpb > GZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0 > %3D%7C3000&sdata=Bff7tju87yGZyyCuqmOB%2BFaKPkBphxCEmLNw2X8E%2FFg%3 > D&reserved=0 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
