# file      : build2/buildfile
# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
# license   : MIT; see accompanying LICENSE file

import libs  = libbutl%lib{butl}
import libs += libpkgconf%lib{pkgconf}

exe{b}:  cxx{b} libue{b}

libue{b}: {hxx ixx txx cxx}{** -b -b-options -config -version} \
          {hxx ixx cxx}{b-options} {hxx}{config version}       \
          $libs

hxx{config}: in{config}
hxx{version}: in{version} $src_root/manifest

# Pass our compiler target to be used as build2 host.
#
obj{b context}: cxx.poptions += -DBUILD2_HOST_TRIPLET=\"$cxx.target\"

# Pass native C and C++ compiler paths (not forgetting to escape backslashes
# on Windows). These are used as defaults for BUILD2_DEFAULT_*.
#
if ($cxx.target == $build.host)
{
  c/obj{init}: cxx.poptions += \
    -DBUILD2_NATIVE_C=\"$regex.replace($recall($c.path), '\\', '\\\\')\"

  cxx/obj{init}: cxx.poptions += \
    -DBUILD2_NATIVE_CXX=\"$regex.replace($recall($cxx.path), '\\', '\\\\')\"
}

if ($cxx.target.class != "windows")
  cxx.libs += -lpthread
else
{
  # Adjust stack size (affects all threads).
  #
  if ($cxx.target.cpu == "x86_64")
    stack_size = 8388608 # 8M
  else
    stack_size = 4194304 # 4M

  if ($cxx.class == 'msvc')
    cxx.loptions += "/STACK:$stack_size"
  else
    cxx.loptions += "-Wl,--stack,$stack_size"
}

# Generated options parser.
#
if $cli.configured
{
  cli.cxx{b-options}: cli{b}

  cli.options += -I $src_root --include-with-brackets --include-prefix build2 \
--guard-prefix BUILD2 --cxx-prologue "#include <build2/types-parsers.hxx>" \
--cli-namespace build2::cl --generate-file-scanner --keep-separator \
--generate-parse --generate-specifier

  # Usage options.
  #
  cli.options += --suppress-undocumented --long-usage --ansi-color \
--page-usage 'build2::print_$name$_' --option-length 20

  # Include the generated cli files into the distribution and don't remove
  # them when cleaning in src (so that clean results in a state identical to
  # distributed).
  #
  cli.cxx{*}: dist  = true
  cli.cxx{*}: clean = ($src_root != $out_root)

  # We keep the generated code in the repository so copy it back to src in
  # case of a forwarded configuration.
  #
  cli.cxx{*}: backlink = overwrite
}