# file      : libz/buildfile
# license   : zlib License; see accompanying LICENSE file

lib{z}: {h c}{* -zconf} h{zconf}

tclass = $c.target.class
tsys   = $c.target.system

linux   = ($tclass == 'linux')
bsd     = ($tclass == 'bsd')
windows = ($tclass == 'windows')

libs{z}: file{zlib.map}: include = ($linux || $bsd ? adhoc : false)
libs{z}: def{zlib}:      include = $windows

# Include the generated config header into the distribution (so that we don't
# pick up an installed one) and don't remove it when cleaning in src (so that
# clean results in a state identical to distributed).
#
h{zconf}: in{zconf}
{
  dist  = true
  clean = ($src_root != $out_root)

  in.symbol       = '@'
  in.substitution = lax

  HAVE_UNISTD_H = ($windows ? 0 : 1)
  HAVE_STDARG_H = ($windows ? 0 : 1)
}

# Build options.
#
if! $windows
  c.poptions += -DHAVE_HIDDEN

switch $tclass, $tsys
{
  case 'linux' | 'bsd'
    c.poptions += -D_LARGEFILE64_SOURCE=1

  case 'windows', 'win32-msvc'
    c.poptions += -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE
}

# Note that we add "-I$src_base" for the headers auto-generating machinery to
# work properly.
#
c.poptions =+ "-I$out_base" "-I$src_base"

switch $c.class
{
  case 'gcc'
  {
    # Disable warnings that pop up with -Wall -Wextra. Upstream doesn't seem
    # to care about these and it is not easy to disable specific warnings in a
    # way that works across compilers/version (some -Wno-* options are only
    # recognized in newer versions).
    #
    # @@ TMP: try to re-enable on next release.
    #
    c.coptions += -Wno-all -Wno-extra

    if ($c.id.type == 'clang' && $c.version.major >= 15)
      c.coptions += -Wno-deprecated-non-prototype

    # Disable the Clang targeting MSVC warnings.
    #
    if ($c.id == 'clang' && $tsys == 'win32-msvc')
      c.coptions += -Wno-deprecated-declarations
  }
  case 'msvc'
  {
    # Disable warnings that pop up with /W3.
    #
    c.coptions += /wd4244 /wd4267
  }
}

switch $tclass
{
  case 'linux' | 'bsd'
  {
    # Make sure all symbols are resolvable.
    #
    c.loptions += -Wl,--no-undefined

    c.loptions += "-Wl,--version-script=$src_base/zlib.map"
  }
}

# Export options.
#
lib{z}: cc.export.poptions = "-I$out_base" "-I$src_base"

# See bootstrap.build for details.
#
if $version.pre_release
  lib{z}: bin.lib.version = @"-$version.project_id"
else
  lib{z}: bin.lib.version = @"-$abi_version_major" linux@"$abi_version"

# Install the bare minimum of headers (note: not recreating subdirectories).
#
h{*}:       install = false
h{zconf}:   install = include/
h{zlib}@./: install = include/