Nim/config/nim.cfg

# Configuration file for the Nim Compiler.
# (c) 2017 Andreas Rumpf

# Feel free to edit the default values as you need.
# See https://nim-lang.org/docs/nimc.html

# You may set environment variables with
# @putenv "key" "val"
# Environment variables can be accessed like so:
#  gcc.path %= "$CC_PATH"

cc = gcc

# additional options always passed to the compiler:
--parallel_build: "0" # 0 to auto-detect number of processors

@if not nimHasNolineTooLong:
  hint[LineTooLong]=off
@end

@if nimHasAmbiguousEnumHint:
  # not needed if hint is a style check
  hint[AmbiguousEnum]=off
@end
#hint[XDeclaredButNotUsed]=off

threads:on

# Examples of how to setup a cross-compiler:
# Nim can target architectures and OSes different than the local host
# Syntax: <arch>.<os>.gcc.exe = "<compiler executable>"
#         <arch>.<os>.gcc.linkerexe = "<linker executable>"

# ARM e.g. Raspberry Pi 2: gcc-arm-linux-gnueabihf package on Debian/Ubuntu
arm.linux.gcc.exe = "arm-linux-gnueabihf-gcc"
arm.linux.gcc.linkerexe = "arm-linux-gnueabihf-gcc"
# ARM64/aarch64 e.g. Raspberry Pi 3: gcc-aarch64-linux-gnu package on Debian/Ubuntu
arm64.linux.gcc.exe = "aarch64-linux-gnu-gcc"
arm64.linux.gcc.linkerexe = "aarch64-linux-gnu-gcc"
# RISC-V: gcc-riscv64-linux-gnu package on Debian/Ubuntu
riscv32.linux.gcc.exe = "riscv64-linux-gnu-gcc"
riscv32.linux.gcc.linkerexe = "riscv64-linux-gnu-gcc"
riscv64.linux.gcc.exe = "riscv64-linux-gnu-gcc"
riscv64.linux.gcc.linkerexe = "riscv64-linux-gnu-gcc"

# For OpenWRT, you will also need to adjust PATH to point to your toolchain.
mips.linux.gcc.exe = "mips-openwrt-linux-gcc"
mips.linux.gcc.linkerexe = "mips-openwrt-linux-gcc"


path="$lib/deprecated/core"
path="$lib/deprecated/pure"
path="$lib/pure/collections"
path="$lib/pure/concurrency"
path="$lib/impure"
path="$lib/wrappers"
path="$lib/wrappers/linenoise"
path="$lib/windows"
path="$lib/posix"
path="$lib/js"
path="$lib/pure/unidecode"
path="$lib/arch"
path="$lib/core"
path="$lib/pure"

@if not windows:
  nimblepath="/opt/nimble/pkgs2/"
  nimblepath="/opt/nimble/pkgs/"
@else:
  # TODO:
@end
nimblepath="$home/.nimble/pkgs2/"
nimblepath="$home/.nimble/pkgs/"

# Syncronize with compiler/commands.specialDefine
@if danger or quick:
  obj_checks:off
  field_checks:off
  range_checks:off
  bound_checks:off
  overflow_checks:off
  assertions:off
  stacktrace:off
  linetrace:off
  debugger:off
  line_dir:off
@end

# Syncronize with compiler/commands.specialDefine
@if release or danger:
  stacktrace:off
  excessiveStackTrace:off
  linetrace:off
  debugger:off
  line_dir:off
  opt:speed
  define:release
@end

@if false: # not danger: # this does not work yet.
  clang.options.always %= "${clang.options.always} -fsanitize=null -fsanitize-undefined-trap-on-error"
  gcc.options.always %= "${gcc.options.always} -fsanitize=null -fsanitize-undefined-trap-on-error"
@end

# Turn off threads support when compiling for bare-metal targets (--os:any)
@if any:
  threads:off
@end

@if unix and mingw:
  # Cross compile for Windows from Linux/OSX using MinGW
  i386.windows.gcc.exe = "i686-w64-mingw32-gcc"
  i386.windows.gcc.linkerexe = "i686-w64-mingw32-gcc"
  i386.windows.gcc.cpp.exe = "i686-w64-mingw32-g++"
  i386.windows.gcc.cpp.linkerexe = "i686-w64-mingw32-g++"

  amd64.windows.gcc.exe = "x86_64-w64-mingw32-gcc"
  amd64.windows.gcc.linkerexe = "x86_64-w64-mingw32-gcc"
  amd64.windows.gcc.cpp.exe = "x86_64-w64-mingw32-g++"
  amd64.windows.gcc.cpp.linkerexe = "x86_64-w64-mingw32-g++"

  @if macosx:
    i386.windows.gcc.path = "/usr/local/bin"
    amd64.windows.gcc.path = "/usr/local/bin"
  @else:
    i386.windows.gcc.path = "/usr/bin"
    amd64.windows.gcc.path = "/usr/bin"
  @end

  os = windows

  gcc.options.linker = ""
  gcc.cpp.options.linker = ""
@end

@if unix:
  @if bsd:
    # BSD got posix_spawn only recently, so we deactivate it for osproc:
    define:useFork
  @elif haiku:
    gcc.options.linker = "-Wl,--as-needed -lnetwork"
    gcc.cpp.options.linker = "-Wl,--as-needed -lnetwork"
    clang.options.linker = "-Wl,--as-needed -lnetwork"
    clang.cpp.options.linker = "-Wl,--as-needed -lnetwork"
    tcc.options.linker = "-Wl,--as-needed -lnetwork"
  @elif not genode:
    # -fopenmp
    gcc.options.linker = "-ldl"
    gcc.cpp.options.linker = "-ldl"
    clang.options.linker = "-ldl"
    clang.cpp.options.linker = "-ldl"
    tcc.options.linker = "-ldl"
  @end
@end

@if android:
  cc = clang
  @if termux:
    gcc.options.linker = "-landroid-glob"
    gcc.cpp.options.linker = "-landroid-glob"
    clang.options.linker = "-landroid-glob"
    clang.cpp.options.linker = "-landroid-glob"
    tcc.options.linker = "-landroid-glob"
  @end
@end

@if nintendoswitch:
  cc = "switch_gcc"
  switch_gcc.options.linker = "-g -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE"
  switch_gcc.cpp.options.linker = "-g -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE"
  switch_gcc.options.always = "-g -Wall -O2 -ffunction-sections -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE -D__SWITCH__"
  switch_gcc.cpp.options.always = "-g -Wall -O2 -ffunction-sections -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE -D__SWITCH__ -fno-rtti -fno-exceptions -std=gnu++11"
@end

# Configuration for the Intel C/C++ compiler:
@if windows:
  icl.options.speed = "/Ox /arch:SSE2"
  icl.options.always = "/nologo"
@end

# Configuration for the GNU C/C++ compiler:
@if windows:
  #gcc.path = r"$nim\dist\mingw\bin"
  @if gcc:
    gcc.options.linker %= "-Wl,-Bstatic -lpthread"
  @end
  @if tcc:
    tlsEmulation:on
  @end
@end

gcc.maxerrorsimpl = "-fmax-errors=3"

@if freebsd or netbsd:
  tlsEmulation:off
@elif bsd:
  tlsEmulation:on
@end

@if macosx or freebsd or openbsd:
  cc = clang
  gcc.options.always %= "-w ${gcc.maxerrorsimpl}"
  gcc.cpp.options.always %= "-w ${gcc.maxerrorsimpl} -fpermissive"
@elif windows:
  gcc.options.always %= "-w ${gcc.maxerrorsimpl} -mno-ms-bitfields"
  gcc.cpp.options.always %= "-w ${gcc.maxerrorsimpl} -fpermissive -mno-ms-bitfields"
@else:
  gcc.options.always %= "-w ${gcc.maxerrorsimpl}"
  gcc.cpp.options.always %= "-w ${gcc.maxerrorsimpl} -fpermissive"
@end

# Configuration for Objective-C compiler:
#
# Options for GNUStep. GNUStep configuration varies wildly, so you'll probably
# have to add additional compiler and linker flags on a per-project basis.
gcc.objc.options.linker = "-lobjc -lgnustep-base"
llvm_gcc.objc.options.linker = "-lobjc -lgnustep-base"
clang.objc.options.linker = "-lobjc -lgnustep-base"

# Options for Mac OS X. Mac OS X uses its own Objective-C stack that is
# totally different from GNUStep.
@if macosx:
  gcc.objc.options.linker = "-framework Foundation"
  llvm_gcc.objc.options.linker = "-framework Foundation"
  clang.objc.options.linker = "-framework Foundation"
@end

# Options for FreeBSD, OpenBSD, NetBSD linker to add locations for searching
# shared libraries.
@if freebsd or openbsd or netbsd:
  gcc.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
  gcc.cpp.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
  llvm_gcc.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
  llvm_gcc.cpp.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
  clang.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
  clang.cpp.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"

  cincludes: "/usr/local/include"
  clibdir: "/usr/local/lib"
@end

@if freebsd or openbsd:
  cincludes: "/usr/local/include"
  clibdir: "/usr/local/lib"
@elif netbsd:
  cincludes: "/usr/pkg/include"
  clibdir: "/usr/pkg/lib"
@end

# Configuration for the VxWorks
# This has been tested with VxWorks 6.9 only
@if vxworks:
  # For now we only support compiling RTPs applications (i.e. no DKMs)
  gcc.options.always = "-mrtp -fno-strict-aliasing -D_C99 -D_HAS_C9X -std=c99 -fasm -Wall -Wno-write-strings"
  # The linker config must add the VxWorks common library for the selected
  # processor which is usually found in:
  # "$WIND_BASE/target/lib/usr/lib/PROCESSOR_FAMILY/PROCESSOR_TYPE/common",
  # where PROCESSOR_FAMILY and PROCESSOR_TYPE are those supported by the VxWorks
  # compiler (e.g. ppc/PPC32 or mips/MIPSI64, etc)
  # For now we only support the PowerPC CPU
  gcc.options.linker %= "-L $WIND_BASE/target/lib/usr/lib/ppc/PPC32/common -mrtp -fno-strict-aliasing -D_C99 -D_HAS_C9X -std=c99 -fasm -Wall -Wno-write-strings"
@end

# -fno-math-errno is default in OSX, iOS, BSD, Musl, Libm, LLVM, Clang, ICC.
# See https://itnext.io/why-standard-c-math-functions-are-slow-d10d02554e33
# and https://gcc.gnu.org/onlinedocs/gcc-12.2.0/gcc/Optimize-Options.html#Optimize-Options
gcc.options.speed = "-O3 -fno-strict-aliasing -fno-ident -fno-math-errno"
gcc.options.size = "-Os -fno-ident"
@if windows:
  gcc.options.debug = "-g3 -Og -gdwarf-3"
@else:
  gcc.options.debug = "-g3 -Og"
@end
gcc.cpp.options.speed = "-O3 -fno-strict-aliasing -fno-ident -fno-math-errno"
gcc.cpp.options.size = "-Os -fno-ident"
gcc.cpp.options.debug = "-g3 -Og"
#passl = "-pg"

# Configuration for the LLVM GCC compiler:
llvm_gcc.options.debug = "-g"
llvm_gcc.options.always = "-w"
llvm_gcc.options.speed = "-O2"
llvm_gcc.options.size = "-Os"

# Configuration for the LLVM CLang compiler:
clang.options.debug = "-g"
clang.cpp.options.debug = "-g"
clang.options.always = "-w -ferror-limit=3"
clang.options.speed = "-O3"
clang.options.size = "-Os"

@if windows:
  clang_cl.cpp.options.always %= "${clang_cl.options.always} /EHsc"
  @if not release and not safety and not danger:
    clang_cl.options.linker = "/Z7"
    clang_cl.cpp.options.linker = "/Z7"
  @end
  clang.options.debug = "-g -gcodeview"
  clang.cpp.options.debug = "-g -gcodeview"
  @if not release and not safety and not danger:
    clang.options.linker = "-g"
    clang.cpp.options.linker = "-g"
  @end
@end

# Configuration for the Visual C/C++ compiler:
# VCCEXE is a tool that invokes the Visual Studio Developer Command Prompt
# before calling the compiler.
# Please make sure either Visual Studio or C++ Build SKU is installed when using the vcc compiler backend.

vcc.exe = "vccexe.exe"
vcc.cpp.exe = "vccexe.exe"
vcc.linkerexe = "vccexe.exe"
vcc.cpp.linkerexe = "vccexe.exe"

vcc.options.always =  "/nologo"
vcc.cpp.options.always = "/nologo /EHsc"
vcc.options.debug = "/Zi /FS /Od"
vcc.cpp.options.debug = "/Zi /FS /Od"
vcc.options.speed = "/O2"
vcc.cpp.options.speed = "/O2"
vcc.options.size = "/O1"
vcc.cpp.options.size = "/O1"

# Configuration for the Tiny C Compiler:
tcc.options.always = "-w"

@if arm or arm64:
  --define:nimEmulateOverflowChecks
@end

@if lto or lto_incremental:
  @if lto_incremental:
   vcc.options.always%= "${vcc.options.always} /GL /Gw /Gy"
   vcc.cpp.options.always%= "${vcc.cpp.options.always} /GL /Gw /Gy"
   vcc.options.linker %= "${vcc.options.linker} /link /LTCG:incremental"
   vcc.cpp.options.linker %= "${vcc.cpp.options.linker} /link /LTCG:incremental"
   clang_cl.options.always%= "${clang_cl.options.always} -flto=thin"
   clang_cl.cpp.options.always%= "${clang.cpp.options.always} -flto=thin"
   clang.options.always%= "${clang.options.always} -flto=thin"
   clang.cpp.options.always%= "${clang.cpp.options.always} -flto=thin"
   clang.options.linker %= "${clang.options.linker} -flto=thin"
   clang.cpp.options.linker %= "${clang.cpp.options.linker} -flto=thin"
  @else:
   vcc.options.always%= "${vcc.options.always} /GL"
   vcc.cpp.options.always%= "${vcc.cpp.options.always} /GL"
   vcc.options.linker %= "${vcc.options.linker} /link /LTCG"
   vcc.cpp.options.linker %= "${vcc.cpp.options.linker} /link /LTCG"
   clang_cl.options.always%= "${clang_cl.options.always} -flto"
   clang_cl.cpp.options.always%= "${clang.cpp.options.always} -flto"
   clang.options.always%= "${clang.options.always} -flto"
   clang.cpp.options.always%= "${clang.cpp.options.always} -flto"
   clang.options.linker %= "${clang.options.linker} -flto"
   clang.cpp.options.linker %= "${clang.cpp.options.linker} -flto"
  @end
  icl.options.always %= "${icl.options.always} /Qipo"
  icl.cpp.options.always %= "${icl.cpp.options.always} /Qipo"
  gcc.options.always %= "${gcc.options.always} -flto=auto"
  gcc.cpp.options.always %= "${gcc.cpp.options.always} -flto=auto"
  gcc.options.linker %= "${gcc.options.linker} -flto=auto -Wno-stringop-overflow"  # https://github.com/nim-lang/Nim/issues/21595
  gcc.cpp.options.linker %= "${gcc.cpp.options.linker} -flto=auto"
@end
@if strip:
  gcc.options.linker %= "${gcc.options.linker} -s"
  gcc.cpp.options.linker %= "${gcc.cpp.options.linker} -s"
  clang.options.linker %= "${clang.options.linker} -s"
  clang.cpp.options.linker %= "${clang.cpp.options.linker} -s"
@end