# file      : libpkgconf/buildfile
# license   : ISC; see accompanying COPYING file

lib{pkgconf}: {h c}{* -config} {h}{config}

tclass = $c.target.class

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

msvc_runtime = ($c.target.system == 'win32-msvc')

msvc       = ($c.class == 'msvc')
clang_msvc = ($c.id == 'clang' && $msvc_runtime)

# Assign variables for the PKG_DEFAULT_PATH, SYSTEM_INCLUDEDIR, and
# SYSTEM_LIBDIR macro definitions. The whole idea feels utterly broken (hello
# cross-compilation) so we will just do bare minimum and wait and see.
#
# There is also PERSONALITY_PATH macro added in 1.5.1. It looks like the
# personality files are invented to fix cross-compilation but are unlikely to
# have any noticeable distribution yet. Normally these files are located in
# the personality.d/ subdirectory of the .pc files directory.
#
# @@ We should probably allow to configure these macros via configuration
#    variables config.pkgconfig.pkg_default_path and alike.
#
if! $windows
{
  inc_dirs = "/usr/include"
  lib_dirs = "/usr/lib"

  if ($install.root != [null])
  {
    def_dirs = "$install.resolve($install.pkgconfig)"
    personality_dirs = "$def_dirs/personality.d"
  }
  else
  {
    def_dirs = ""
    personality_dirs = ""
  }
}
else
{
  inc_dirs = ""
  lib_dirs = ""

  # Note that on Windows PKG_DEFAULT_PATH macros is internally redefined as
  # "../lib/pkgconfig;../share/pkgconfig" and is used as a fallback. Normally
  # the default path is relative to the program's (that link the library)
  # directory and has the following format:
  #
  # <dir>/../lib/pkgconfig;<dir>/../share/pkgconfig
  #
  # So we keep the macros empty.
  #
  def_dirs = ""
  personality_dirs = ""
}

# The config header is internal (is only included from C files), so we don't
# distribute nor install it (see below).
#
h{config}: in{config}
{
  PACKAGE_VERSION = "$version.project_id"

  # Escape backslashes and quotes in the directory paths prior to representing
  # them as C string literals.
  #
  SYSTEM_INCLUDEDIR = $regex.replace($inc_dirs, '(\\|")', '\\\1')
  SYSTEM_LIBDIR     = $regex.replace($lib_dirs, '(\\|")', '\\\1')
  PKG_DEFAULT_PATH  = $regex.replace($def_dirs, '(\\|")', '\\\1')
  PERSONALITY_PATH  = $regex.replace($personality_dirs, '(\\|")', '\\\1')
}

# Build options.
#
# Note that we have to add "-I$src_root" for the headers auto-generating
# machinery to work properly.
#
c.poptions =+ "-I$out_root" "-I$src_root"

# Disable warnings.
#
if $msvc
  c.coptions += /wd4996 /wd4267
elif $clang_msvc
  c.coptions += -Wno-deprecated-declarations -Wno-unused-function

# Note: this should go last as it adds obj target-specific poptions.
#
if! $windows
{
  # The upstream package compiles the source files with -std=gnu99 option to
  # allow some GNU deviations from the ISO C99 standard. We will compile with
  # the -std=c99 option (via c.std=99 in root.build) and define
  # _POSIX_C_SOURCE=200809L for all as well as _GNU_SOURCE for some source
  # files (those that require GNU extension). These macros also re-enable
  # definitions of POSIX macros (specifically PATH_MAX) that are disabled by
  # -std=c99.
  #
  # Note that on FreeBSD and MacOS -D_POSIX_C_SOURCE disables declarations of
  # strlcpy() and alike which are not POSIX. Not very consistent given that
  # they are also not C99. Luckily, -std=c99 doesn't disable PATH_MAX on these
  # platforms, so we just don't define this macro for them.
  #
  if! ($bsd || $macos)
    c.poptions += -D_POSIX_C_SOURCE=200809L

  obj{client fragment path personality pkg queue tuple}: \
    c.poptions += -D_GNU_SOURCE
}
else
{
  # See libpkgconf-api.h for details.
  #
  objs{*}: c.poptions += -DLIBPKGCONF_EXPORT
  obja{*}: c.poptions += -DPKGCONFIG_IS_STATIC

  c.libs += ($msvc_runtime ? advapi32.lib : -ladvapi32)
}

# Export options.
#
lib{pkgconf}:  cc.export.poptions = "-I$src_root"
liba{pkgconf}: cc.export.poptions += -DPKGCONFIG_IS_STATIC

# See bootstrap.build for details.
#
if $version.pre_release
  lib{pkgconf}: bin.lib.version = @"-$version.project_id"
else
  lib{pkgconf}: bin.lib.version = @"-$release_num"

# Install into the pkgconf/libpkgconf/ subdirectory of, say, /usr/include/.
# Also make sure Cflags is properly set in .pc files to pkgconfig/.
#
h{*}: install = include/libpkgconf/
install.include = $install.include/pkgconf/

# Implementation details.
#
h{config}: install = false

for h: stdinc win-dirent
  h{$h}@./: install = false