240 lines
9.3 KiB
Nim
240 lines
9.3 KiB
Nim
# Nimbus
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# Copyright (c) 2018-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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import strutils
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const currentDir = currentSourcePath()[0 .. ^(len("config.nims") + 1)]
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if getEnv("NIMBUS_BUILD_SYSTEM") == "yes" and
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# BEWARE
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# In Nim 1.6, config files are evaluated with a working directory
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# matching where the Nim command was invocated. This means that we
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# must do all file existance checks with full absolute paths:
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system.fileExists(currentDir & "nimbus-build-system.paths"):
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include "nimbus-build-system.paths"
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const nimCachePathOverride {.strdefine.} = ""
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when nimCachePathOverride == "":
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when defined(release):
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let nimCachePath = "nimcache/release/" & projectName()
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else:
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let nimCachePath = "nimcache/debug/" & projectName()
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else:
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let nimCachePath = nimCachePathOverride
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switch("nimcache", nimCachePath)
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# `-flto` gives a significant improvement in processing speed, specially hash tree and state transition (basically any CPU-bound code implemented in nim)
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# With LTO enabled, optimization flags should be passed to both compiler and linker!
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if defined(release) and not defined(disableLTO):
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# "-w" is not passed to the compiler during linking, so we need to disable
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# some warnings by hand.
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switch("passL", "-Wno-stringop-overflow -Wno-stringop-overread")
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if defined(macosx): # Clang
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switch("passC", "-flto=thin")
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switch("passL", "-flto=thin -Wl,-object_path_lto," & nimCachePath & "/lto")
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elif defined(linux):
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switch("passC", "-flto=auto")
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switch("passL", "-flto=auto")
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switch("passC", "-finline-limit=100000")
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switch("passL", "-finline-limit=100000")
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else:
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# On windows, LTO needs more love and attention so "gcc-ar" and "gcc-ranlib" are
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# used for static libraries.
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discard
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# Hidden visibility allows for better position-independent codegen - it also
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# resolves a build issue in BLST where otherwise private symbols would require
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# an unsupported relocation on PIE-enabled distros such as ubuntu - BLST itself
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# solves this via a linker script which is messy
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switch("passC", "-fvisibility=hidden")
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if defined(windows):
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# disable timestamps in Windows PE headers - https://wiki.debian.org/ReproducibleBuilds/TimestampsInPEBinaries
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switch("passL", "-Wl,--no-insert-timestamp")
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# increase stack size, unless something else is setting the stack size
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if not defined(windowsNoSetStack):
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switch("passL", "-Wl,--stack,8388608")
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# https://github.com/nim-lang/Nim/issues/4057
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--tlsEmulation:off
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if defined(i386):
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# set the IMAGE_FILE_LARGE_ADDRESS_AWARE flag so we can use PAE, if enabled, and access more than 2 GiB of RAM
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switch("passL", "-Wl,--large-address-aware")
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# Colors are disabled for Windows, see issue:
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# https://github.com/status-im/nim-chronicles/issues/130
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switch("define", "chronicles_colors=off")
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# Avoid some rare stack corruption while using exceptions with a SEH-enabled
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# toolchain: https://github.com/status-im/nimbus-eth2/issues/3121
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switch("define", "nimRawSetjmp")
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# This helps especially for 32-bit x86, which sans SSE2 and newer instructions
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# requires quite roundabout code generation for cryptography, and other 64-bit
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# and larger arithmetic use cases, along with register starvation issues. When
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# engineering a more portable binary release, this should be tweaked but still
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# use at least -msse2 or -msse3.
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#
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# https://github.com/status-im/nimbus-eth2/blob/stable/docs/cpu_features.md#ssse3-supplemental-sse3
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# suggests that SHA256 hashing with SSSE3 is 20% faster than without SSSE3, so
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# given its near-ubiquity in the x86 installed base, it renders a distribution
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# build more viable on an overall broader range of hardware.
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#
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if defined(disableMarchNative):
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if defined(i386) or defined(amd64):
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if defined(macosx):
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# https://support.apple.com/kb/sp803
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# "macOS Catalina - Technical Specifications": EOL as of 2022-09
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# https://support.apple.com/kb/sp833
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# "macOS Big Sur - Technical Specifications" lists current oldest
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# supported models: MacBook (2015 or later), MacBook Air (2013 or later),
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# MacBook Pro (Late 2013 or later), Mac mini (2014 or later), iMac (2014
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# or later), iMac Pro (2017 or later), Mac Pro (2013 or later).
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#
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# These all have Haswell or newer CPUs.
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#
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# This ensures AVX2, AES-NI, PCLMUL, BMI1, and BMI2 instruction set support.
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switch("passC", "-march=haswell -mtune=generic")
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switch("passL", "-march=haswell -mtune=generic")
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else:
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switch("passC", "-mssse3")
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switch("passL", "-mssse3")
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elif defined(macosx) and defined(arm64):
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# Apple's Clang can't handle "-march=native" on M1: https://github.com/status-im/nimbus-eth2/issues/2758
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switch("passC", "-mcpu=apple-a14")
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switch("passL", "-mcpu=apple-a14")
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else:
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switch("passC", "-march=native")
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switch("passL", "-march=native")
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if defined(windows):
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65782
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# ("-fno-asynchronous-unwind-tables" breaks Nim's exception raising, sometimes)
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switch("passC", "-mno-avx512f")
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switch("passL", "-mno-avx512f")
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# Omitting frame pointers in nim breaks the GC:
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# https://github.com/nim-lang/Nim/issues/10625
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if not defined(windows):
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# ...except on Windows where the Nim bug doesn't manifest and the option
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# crashes GCC in some Mingw-w64 versions:
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# https://sourceforge.net/p/mingw-w64/bugs/880/
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86593
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switch("passC", "-fno-omit-frame-pointer")
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switch("passL", "-fno-omit-frame-pointer")
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--threads:on
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--opt:speed
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--excessiveStackTrace:on
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# enable metric collection
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--define:metrics
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# for heap-usage-by-instance-type metrics and object base-type strings
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--define:nimTypeNames
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--styleCheck:usages
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--styleCheck:error
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--mm:refc
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switch("define", "withoutPCRE")
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when not defined(disable_libbacktrace):
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--define:nimStackTraceOverride
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switch("import", "libbacktrace")
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else:
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--stacktrace:on
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--linetrace:on
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var canEnableDebuggingSymbols = true
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if defined(macosx):
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# The default open files limit is too low on macOS (512), breaking the
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# "--debugger:native" build. It can be increased with `ulimit -n 1024`.
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let openFilesLimitTarget = 1024
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var openFilesLimit = 0
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try:
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openFilesLimit = staticExec("ulimit -n").strip(chars = Whitespace + Newlines).parseInt()
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if openFilesLimit < openFilesLimitTarget:
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echo "Open files limit too low to enable debugging symbols and lightweight stack traces."
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echo "Increase it with \"ulimit -n " & $openFilesLimitTarget & "\""
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canEnableDebuggingSymbols = false
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except:
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echo "ulimit error"
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# We ignore this resource limit on Windows, where a default `ulimit -n` of 256
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# in Git Bash is apparently ignored by the OS, and on Linux where the default of
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# 1024 is good enough for us.
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if canEnableDebuggingSymbols:
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# add debugging symbols and original files and line numbers
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--debugger:native
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--define:nimOldCaseObjects # https://github.com/status-im/nim-confutils/issues/9
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# `switch("warning[CaseTransition]", "off")` fails with "Error: invalid command line option: '--warning[CaseTransition]'"
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switch("warning", "CaseTransition:off")
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# The compiler doth protest too much, methinks, about all these cases where it can't
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# do its (N)RVO pass: https://github.com/nim-lang/RFCs/issues/230
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switch("warning", "ObservableStores:off")
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# nim-kzg shipping their own blst, nimbus-eth1 too.
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# disable nim-kzg's blst
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switch("define", "kzgExternalBlst")
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# We lock down rocksdb to a particular version
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# TODO self-build rocksdb dll on windows
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when not defined(use_system_rocksdb) and not defined(windows):
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switch("define", "rocksdb_static_linking")
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# use the C++ linker profile because it's a C++ library
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when defined(macosx):
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switch("clang.linkerexe", "clang++")
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else:
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switch("gcc.linkerexe", "g++")
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switch("dynlibOverride", "rocksdb")
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switch("dynlibOverride", "lz4")
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switch("dynlibOverride", "zstd")
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# This applies per-file compiler flags to C files
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# which do not support {.localPassC: "...".}
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# Unfortunately this is filename based instead of path-based
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# Assumes GCC
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# -fomit-frame-pointer for https://github.com/status-im/nimbus-eth1/issues/2127
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put("secp256k1.always", "-fno-lto -fomit-frame-pointer")
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# ############################################################
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#
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# No LTO for crypto
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#
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# ############################################################
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# This applies per-file compiler flags to C files
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# which do not support {.localPassC: "-fno-lto".}
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# Unfortunately this is filename based instead of path-based
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# Assumes GCC
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# BLST
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put("server.always", "-fno-lto")
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put("assembly.always", "-fno-lto")
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# BearSSL - only RNGs
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put("aesctr_drbg.always", "-fno-lto")
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put("hmac_drbg.always", "-fno-lto")
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put("sysrng.always", "-fno-lto")
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# ############################################################
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#
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# Spurious warnings
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#
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# ############################################################
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# sqlite3.c: In function ‘sqlite3SelectNew’:
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# vendor/nim-sqlite3-abi/sqlite3.c:124500: warning: function may return address of local variable [-Wreturn-local-addr]
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put("sqlite3.always", "-fno-lto") # -Wno-return-local-addr
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