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config.nims
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config.nims
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# Nimbus
# Copyright (c) 2018-2024 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except
# according to those terms.
import strutils
const currentDir = currentSourcePath()[0 .. ^(len("config.nims") + 1)]
if getEnv("NIMBUS_BUILD_SYSTEM") == "yes" and
# BEWARE
# In Nim 1.6, config files are evaluated with a working directory
# matching where the Nim command was invocated. This means that we
# must do all file existance checks with full absolute paths:
system.fileExists(currentDir & "nimbus-build-system.paths"):
include "nimbus-build-system.paths"
if defined(release):
switch("nimcache", "nimcache/release/$projectName")
else:
switch("nimcache", "nimcache/debug/$projectName")
if defined(windows):
# disable timestamps in Windows PE headers - https://wiki.debian.org/ReproducibleBuilds/TimestampsInPEBinaries
switch("passL", "-Wl,--no-insert-timestamp")
# increase stack size, unless something else is setting the stack size
if not defined(windowsNoSetStack):
switch("passL", "-Wl,--stack,8388608")
# https://github.com/nim-lang/Nim/issues/4057
--tlsEmulation:off
if defined(i386):
# set the IMAGE_FILE_LARGE_ADDRESS_AWARE flag so we can use PAE, if enabled, and access more than 2 GiB of RAM
switch("passL", "-Wl,--large-address-aware")
# Colors are disabled for Windows, see issue:
# https://github.com/status-im/nim-chronicles/issues/130
switch("define", "chronicles_colors=off")
# Avoid some rare stack corruption while using exceptions with a SEH-enabled
# toolchain: https://github.com/status-im/nimbus-eth2/issues/3121
switch("define", "nimRawSetjmp")
# This helps especially for 32-bit x86, which sans SSE2 and newer instructions
# requires quite roundabout code generation for cryptography, and other 64-bit
# and larger arithmetic use cases, along with register starvation issues. When
# engineering a more portable binary release, this should be tweaked but still
# use at least -msse2 or -msse3.
#
# https://github.com/status-im/nimbus-eth2/blob/stable/docs/cpu_features.md#ssse3-supplemental-sse3
# suggests that SHA256 hashing with SSSE3 is 20% faster than without SSSE3, so
# given its near-ubiquity in the x86 installed base, it renders a distribution
# build more viable on an overall broader range of hardware.
#
if defined(disableMarchNative):
if defined(i386) or defined(amd64):
if defined(macosx):
# https://support.apple.com/kb/sp803
# "macOS Catalina - Technical Specifications": EOL as of 2022-09
# https://support.apple.com/kb/sp833
# "macOS Big Sur - Technical Specifications" lists current oldest
# supported models: MacBook (2015 or later), MacBook Air (2013 or later),
# MacBook Pro (Late 2013 or later), Mac mini (2014 or later), iMac (2014
# or later), iMac Pro (2017 or later), Mac Pro (2013 or later).
#
# These all have Haswell or newer CPUs.
#
# This ensures AVX2, AES-NI, PCLMUL, BMI1, and BMI2 instruction set support.
switch("passC", "-march=haswell -mtune=generic")
switch("passL", "-march=haswell -mtune=generic")
else:
switch("passC", "-mssse3")
switch("passL", "-mssse3")
elif defined(macosx) and defined(arm64):
# Apple's Clang can't handle "-march=native" on M1: https://github.com/status-im/nimbus-eth2/issues/2758
switch("passC", "-mcpu=apple-a14")
switch("passL", "-mcpu=apple-a14")
else:
switch("passC", "-march=native")
switch("passL", "-march=native")
if defined(windows):
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65782
# ("-fno-asynchronous-unwind-tables" breaks Nim's exception raising, sometimes)
switch("passC", "-mno-avx512f")
switch("passL", "-mno-avx512f")
# Omitting frame pointers in nim breaks the GC:
# https://github.com/nim-lang/Nim/issues/10625
if not defined(windows):
# ...except on Windows where the Nim bug doesn't manifest and the option
# crashes GCC in some Mingw-w64 versions:
# https://sourceforge.net/p/mingw-w64/bugs/880/
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86593
switch("passC", "-fno-omit-frame-pointer")
switch("passL", "-fno-omit-frame-pointer")
--threads:on
--opt:speed
--excessiveStackTrace:on
# enable metric collection
--define:metrics
# for heap-usage-by-instance-type metrics and object base-type strings
--define:nimTypeNames
--styleCheck:usages
--styleCheck:error
--mm:refc
switch("define", "withoutPCRE")
when not defined(disable_libbacktrace):
--define:nimStackTraceOverride
switch("import", "libbacktrace")
else:
--stacktrace:on
--linetrace:on
var canEnableDebuggingSymbols = true
if defined(macosx):
# The default open files limit is too low on macOS (512), breaking the
# "--debugger:native" build. It can be increased with `ulimit -n 1024`.
let openFilesLimitTarget = 1024
var openFilesLimit = 0
try:
openFilesLimit = staticExec("ulimit -n").strip(chars = Whitespace + Newlines).parseInt()
if openFilesLimit < openFilesLimitTarget:
echo "Open files limit too low to enable debugging symbols and lightweight stack traces."
echo "Increase it with \"ulimit -n " & $openFilesLimitTarget & "\""
canEnableDebuggingSymbols = false
except:
echo "ulimit error"
# We ignore this resource limit on Windows, where a default `ulimit -n` of 256
# in Git Bash is apparently ignored by the OS, and on Linux where the default of
# 1024 is good enough for us.
if canEnableDebuggingSymbols:
# add debugging symbols and original files and line numbers
--debugger:native
--define:nimOldCaseObjects # https://github.com/status-im/nim-confutils/issues/9
# `switch("warning[CaseTransition]", "off")` fails with "Error: invalid command line option: '--warning[CaseTransition]'"
switch("warning", "CaseTransition:off")
# The compiler doth protest too much, methinks, about all these cases where it can't
# do its (N)RVO pass: https://github.com/nim-lang/RFCs/issues/230
switch("warning", "ObservableStores:off")
# Too many false positives for "Warning: method has lock level <unknown>, but another method has 0 [LockLevel]"
switch("warning", "LockLevel:off")
# nim-kzg shipping their own blst, nimbus-eth1 too.
# disable nim-kzg's blst
switch("define", "kzgExternalBlst")
# RocksDB static linking is disabled by default
when defined(enable_rocksdb_static_linking):
when defined(windows):
{.fatal: "RocksDB static linking is not supported on Windows".}
switch("define", "rocksdb_static_linking")
# use the C++ linker profile because it's a C++ library
when defined(macosx):
switch("clang.linkerexe", "clang++")
else:
switch("gcc.linkerexe", "g++")
switch("dynlibOverride", "rocksdb")
switch("dynlibOverride", "lz4")
switch("dynlibOverride", "zstd")