<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED NOTOURBUG - llvmpipe Windows scons build can't detect Visual Studio 2017 toolchain" href="https://bugs.freedesktop.org/show_bug.cgi?id=100202#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED NOTOURBUG - llvmpipe Windows scons build can't detect Visual Studio 2017 toolchain" href="https://bugs.freedesktop.org/show_bug.cgi?id=100202">bug 100202</a> from <a class="email" href="mailto:anonymous@dodgeit.com" title="Anonymous Helper <anonymous@dodgeit.com>"> Anonymous Helper</a> <pre>(In reply to Anonymous Helper from <a href="show_bug.cgi?id=100202#c2">comment #2</a>) > For now you can use either the normal VS2017 Native Tools and VS2015 Native > Tools, but VS2017 toolset would stop working if <a class="bz_bug_link bz_status_NEW " title="NEW - llvmpipe Windows scons build with MSVC toolchain and LLVM 4.0 fails" href="show_bug.cgi?id=100201">bug 100201</a> gets fixed before > this bug. > This is because of the following confusion with Scons: > - MSVC 2017 toolset has built-in xtime definition; > - MSVC 2015 toolset doesn't; > - LLVM 4.0 makes use of xtime; > - LLVM 3.9.1 doesn't; > - Scons, while it can use MSVC 2017 toolset if MSVC 2015 toolset is > installed, it doesn't support it properly, it is unable to detect certain > headers, mainly brand new ones like xtimec.h where xtime is defined. This > leads to a no escape situation where you can only decide how you fail. > > - If you remove xtime definition from Mesa codbase, you quickly get xtime > undefined coming from Scons; > - If you leave this unchanged, MSVC compiler encounters an xtime redifintion > close to the end of the build like here: > <a href="https://bugs.freedesktop.org/attachment.cgi?id=130219">https://bugs.freedesktop.org/attachment.cgi?id=130219</a> Update: It turns out that LLVM 4.0 won't actually impact Scons interaction with MSVC 2017 toolset as I stated above, also xtime was already defined in MSVC 2015 toolset, so it isn't actually brand new as I thought. Both toolchains would be usable regardless of what's going to happpen with <a class="bz_bug_link bz_status_NEW " title="NEW - llvmpipe Windows scons build with MSVC toolchain and LLVM 4.0 fails" href="show_bug.cgi?id=100201">bug 100201</a>.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>