Abseil has a hard dependency on threads (not just in the build system
but in many places in the base libraries), so there is no way to use
it on WASI at the moment.
This lowers the CPU cost of using the flat wire map in router2, and should
use less memory as well.
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
-Werror is not enabled by default, except on CI and for a few specific common traps, to avoid the inevitable breakages when new compiler versions add new diagnostics.
Signed-off-by: gatecat <gatecat@ds0.me>
This should reduce the number of Qt5-related issues, which often prevent
even the basic command line flow from working.
Signed-off-by: David Shah <dave@ds0.me>
This involves very few changes, all typical to WASM ports:
* WASM doesn't currently support threads or atomics so those are
disabled.
* WASM doesn't currently support exceptions so the exception
machinery is stubbed out.
* WASM doesn't (and can't) have mmap(), so an emulation library is
used. That library currently doesn't support MAP_SHARED flags,
so MAP_PRIVATE is used instead.
There is also an update to bring ECP5 bbasm CMake rules to parity
with iCE40 ones, since although it is possible to embed chipdb into
nextpnr on WASM, a 200 MB WASM file has very few practical uses.
The README is not updated and there is no included toolchain file
because at the moment it's not possible to build nextpnr with
upstream boost and wasi-libc. Boost requires a patch (merged, will
be available in boost 1.74.0), wasi-libc requires a few unmerged
patches.
Change version to use git describe instead of git log as this will also work
if tags are present and make the version string set-able from outside as a
parameter to cmake, so that package managers can set this if building outside
of a git working tree.
When building with STATIC_BUILD=ON, different flags need to be specified
when using MSVC. Check for this flag and only set them if necessary.
Signed-off-by: Sean Cross <sean@xobs.io>
On Windows, we can make a static build by setting the triple to
x64-windows-static, but due to some issues with cmake we also need to
modify the linker flags and Python definitions.
Signed-off-by: Sean Cross <sean@xobs.io>
With newer versions of cmake, an unquoted 6th argument gives the
following error:
STRING sub-command REGEX, mode REPLACE needs at least 6 arguments
total to command.
Quoting this fixes the issue.
Signed-off-by: Sean Cross <sean@xobs.io>
A CMake option 'BUILD_HEAP' (default on) configures building of the
HeAP placer and the associated Eigen3 dependency.
Default for the iCE40 is SA placer, with --heap-placer to use HeAP
Default for the ECP5 is HeAP placer, as SA placer can take 1hr+ for
large ECP5 designs and HeAP tends to give better QoR. --sa-placer can
be used to use SA instead, and auto-fallback to SA if HeAP not built.
Signed-off-by: David Shah <dave@ds0.me>
