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| author | Austin Seipp <aseipp@pobox.com> | 2019-04-15 00:02:35 -0500 |
|---|---|---|
| committer | Austin Seipp <aseipp@pobox.com> | 2019-04-15 00:17:54 -0500 |
| commit | 3b6c07c398c3da29d98dd2710703aaa27f1b0b1a (patch) | |
| tree | d444dc79633f151cf8de8925af25780bd908a9bc /pkgs/development/compilers | |
| parent | a5add1e623669a7bf775f3f33b366b1264ce7ae1 (diff) | |
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nextpnr: enable OpenMP support (for Eigen)
The new HEaP analytic placer for NextPNR uses Eigen for underlying placement algorithms. Enabling -DUSE_OPENMP passes -fopenmp onto the compiler, which Eigen picks up automatically with no extra work. This should result in placer speedups for large designs, e.g. on ECP5 85k chips. Signed-off-by: Austin Seipp <aseipp@pobox.com>
Diffstat (limited to 'pkgs/development/compilers')
| -rw-r--r-- | pkgs/development/compilers/nextpnr/default.nix | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/development/compilers/nextpnr/default.nix b/pkgs/development/compilers/nextpnr/default.nix index 5f0bb45933be..e2aa5375835e 100644 --- a/pkgs/development/compilers/nextpnr/default.nix +++ b/pkgs/development/compilers/nextpnr/default.nix @@ -46,6 +46,7 @@ stdenv.mkDerivation rec { [ "-DARCH=generic;ice40;ecp5" "-DICEBOX_ROOT=${icestorm}/share/icebox" "-DTRELLIS_ROOT=${trellisRoot}/trellis" + "-DUSE_OPENMP=ON" ] ++ (stdenv.lib.optional (!enableGui) "-DBUILD_GUI=OFF"); # Fix the version number. This is a bit stupid (and fragile) in practice |