This function has been added in glibc 2.25, and the related syscall in
Linux 3.17, in order to avoid requiring the /dev/urandom to exist, and
doing the open()/read()/close() dance on it.
We pass GRND_NONBLOCK so that it doesn’t block if not enough entropy has
been gathered to initialise the /dev/urandom source, and fallback to the
next source in any error case.
Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/2026>
The macro "_WINVER" does nothing, the macro definitions that matter for
windows API version selection are "_WIN32_WINNT" and "WINVER".
The header "sdkddkver.h" (which is included from thousands of
different windows-headers) defines "WINVER" to the same value as
"_WIN32_WINNT" of only the latter is defined, which explains why this
works right now. But we shouldn't depend on that kind of luck, and
instead define the right maco.
Fixes: 3aee462781 ("meson: add windows compiler checks and libraries")
Acked-by: Dylan Baker <dylan@pnwbakers.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4681>
In meson 0.54.0 I fixed the llvm cmake dependency to return "not found"
if shared linking is requested. This means that for 0.54.0 and later we
don't need to do anything, and for earlier versions we only need to
change the logic to force the config-tool method if shared linking is
required.
Fixes: 821cf6942a
("meson: Use cmake to find LLVM when building for window")
Acked-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4556>
Meson specifies /EDITANDCONTINUE for MSVC projects when using the debug
build-type. This collides with our across-the-board disabling of
incremental linking.
It's clear that we don't want to do incremental linking for
release-builds; it increase the code-size, and adds some needless jumps
to be able to patch in new code. But for debug-builds this seems like a
good thing; we can now debug and on-the-fly recompile changes if we want
to.
This flag seems to have been simply forwarded from the SCons build
system, where it makes a bit more sense; SCons doesn't really integrate
with visual studio, so you can't properly debug with it. But Meson does,
so let's keep some bells-and-whistles here.
So let's avoid disabling incremental linking for debug-builds. For other
builds we still want to do this, because Meson only disables it
automatically for minsize-builds.
This avoids a boat-loads of warnings on the form:
warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/INCREMENTAL:NO' specification
Acked-by: Jose Fonseca <jfonseca@vmware.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4572>
flexint.h uses stdint.h if the compiler claims to support C99. MSVC
doesn't support enough of C99 to enable this flag, but it supports
enough to keep flex happy.
Without this, we end up with *both* some flex-specific definitions as
well as our own definitions from mesa-headers, producing a slew of
compiler warnings.
Reviewed-by: Brian Paul <brianp@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4577>
Only clang has this argument (at least as of clang 8 and gcc 9), which
errors when using the gcc empty initializer syntax in C:
```C
struct foo f = {};
```
GCC has a warning for this, but only when using -Wpedantic, which is a
lot of noise to lose useful warnings in.
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Fixes build with MinGW, with shared LLVM and lto
/tmp/opengl32.dll.BxiIYm.ltrans59.ltrans.o:<artificial>:(.text+0x1674): undefined reference to `LLVMAddInstructionCombiningPass'
See also scons/llvm.py
Acked-by: Dylan Baker <dylan@pnwbakers.com>
This allows ZSTD instead of ZLIB to be used for compressing the shader
cache.
On a 72 core system emulating skl with a full shader-db (with i965):
ZSTD:
1915.10s user 229.27s system 5150% cpu 41.632 total (cold cache)
225.40s user 10.87s system 3810% cpu 6.201 total (warm cache)
154M (235M on disk)
ZLIB:
2231.33s user 194.24s system 1899% cpu 2:07.72 total (cold cache)
229.15s user 10.63s system 3906% cpu 6.139 total (warm cache)
163M (244M on disk)
Tim Arceri sees (8 core ryzen and a full shader-db):
ZSTD:
2505.22 user 40.50 system 3:18.73 elapsed 1280% CPU (cold cache)
418.71 user 14.93 system 0:46.53 elapsed 931% CPU (warm cache)
454.3 MB (681.7 MB on disk)
ZLIB:
3069.83 user 40.02 system 4:20.13 elapsed 1195% CPU (cold cache)
425.50 user 15.17 system 0:46.80 elapsed 941% CPU (warm cache)
470.3 MB (701.4 MB on disk)
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com> (v1)
Reviewed-by: Eric Anholt <eric@anholt.net>
This was made optional in ff9bf223c2 ("meson: make nm binary optional")
for Windows, but proper windows has been added and `nm` is now only used
on Unix systems.
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviwed-by: Dylan Baker <dylan@pnwbakers>
Here's zink, a so far pretty simple vulkan-gallium driver that is able
to translate some applications from OpenGL to Vulkan.
The compiler is quite limited for now, this will be improved on later.
Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Acked-by: Jordan Justen <jordan.l.justen@intel.com>
0.49.0 can compile most of mesa with ICC or ICL, but not SWR without
additional workarounds in our meson.build files. Bumping patch version
is easier and shouldn't be a big burden anyway, especially to cover a
niche compiler. The check originally only covered ICC, but now covers
ICL as well.
Fixes: 3740ffb59c
("meson: add switches for SWR with MSVC")
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/1937
Acked-by: Eric Engestrom <eric.engestrom@intel.com>
We don't use cmake normally because it always results in static linking.
This is very problematic for *nix OSes which expect shared linking by
default, but for windows this isn't a problem as LLVM doesn't support
shared linking on windows anyway.
Reviewed-by: Adam Jackson <ajax@redhat.com>
For building on Windows (when not using cygwin), users may want to use a
binary wrap of LLVM, this provides a fallback to the LLVM dependency
which may be used in this case
Reviewed-by: Adam Jackson <ajax@redhat.com>
It's not really needed, and there's no debian package for it so we're
forced to fall back to wraps in mesa's CI. This can be problematic in
itself.
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
MSVC is generally happy, but mingw errors. I've spent as much time
(several days) trying to squash all of these warnings and I'm done with
it, just leave them as warnings with MinGW.
Acked-by: Kristian H. Kristensen <hoegsberg@google.com>
Because the macros for exporting dll symbols and using TLS are mutually
exclusive.
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Kristian H. Kristensen <hoegsberg@google.com>
There isn't an obvious command line switch here, /arch:AVX *might* be
the right thing, but meson doesn't know what to do here either and
leaves the -msse4.1 and -mstackrealign.
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Kristian H. Kristensen <hoegsberg@google.com>
There's a mingw bug for this, it exports __builtin_posix_memalign but
not posix_memalign, so the check will succeed, but compiling will fail.
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Kristian H. Kristensen <hoegsberg@google.com>
