# file      : libcurl/buildfile
# license   : curl License; see accompanying COPYING file

# Version script.
#
define vsc: file
vsc{*}: extension = vers

import imp_libs  = libssl%lib{ssl}
import imp_libs += libcrypto%lib{crypto}
import imp_libs += libz%lib{z}

lib{curl}: {h c}{**} $imp_libs

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

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

libs{curl}: vsc{libcurl}: include = ($linux || $bsd ? adhoc : false)

vsc{libcurl}: lib/in{libcurl}
{
  in.symbol = '@'

  CURL_LT_SHLIB_VERSIONED_FLAVOUR = 'OPENSSL_'
}

# It seems that for earlier versions of clang the __has_include_next() macro
# is broken in the -frewrite-includes mode. So, in particular, the following
# fragment of llvm-6.0's stdatomic.h:
#
#  #if __STDC_HOSTED__ && __has_include_next(<stdatomic.h>)
#  # include_next <stdatomic.h>
#  #else
#  ...
#  typedef _Atomic(_Bool)              atomic_bool;
#  ...
#  #endif
#
#  expands into:
#
#  #if __STDC_HOSTED__ && (1)/*__has_include_next(<stdatomic.h>)*/
#  #if 0 /* expanded by -frewrite-includes */
#  # include_next <stdatomic.h>
#  #endif /* expanded by -frewrite-includes */
#  # 31 "/usr/lib/llvm-6.0/lib/clang/6.0.0/include/stdatomic.h" 3
#  # 32 "/usr/lib/llvm-6.0/lib/clang/6.0.0/include/stdatomic.h" 3
#  #else
#  ...
#  typedef _Atomic(_Bool)              atomic_bool;
#  ...
#  #endif
#
# This ends up with no atomic_* types defined, etc.
#
# Thus, we enable reprocessing for the source files which (indirectly) include
# <stdatomic.h> for Clang versions prior to 7.0.
#
if ($c.id == 'clang' && $c.version.major < 7)
  lib/obj{easy version hostip}: cc.reprocess = true

# Build options.
#
c.poptions += -DBUILDING_LIBCURL -DHAVE_CONFIG_H \
              -DOS="\"$c.target\"" -DVERSION="\"$version.project_id\""

if! $windows
  c.poptions += -DCURL_HIDDEN_SYMBOLS

switch $tclass, $tsys
{
  case 'windows', 'win32-msvc'
    c.poptions += -DWIN32
}

c.poptions =+ "-I$src_base" "-I$src_base/include" "-I$src_base/lib"

obja{*}: c.poptions += -DCURL_STATICLIB

if! $windows
  c.coptions += -fvisibility=hidden

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). There are still some warnings left that
    # appear for certain platforms/compilers. We pass them through but disable
    # treating them as errors.
    #
    c.coptions += -Wno-all -Wno-extra -Wno-deprecated-declarations -Wno-error
  }
  case 'msvc'
  {
    # Disable warnings that pop up with /W3.
    #
    c.coptions += /wd4028 /wd4996
  }
}

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

    c.loptions += "-Wl,--version-script=$out_base/libcurl.vers"
    c.libs     += -pthread
  }
  case 'macos'
  {
    # Note that upstream generates the libcurl-symbols.expsym file on MacOS
    # and passes it to linker via the -exported_symbols_list option. This
    # looks redundant, since the __visibility__("default") attribute is also
    # used for the API function declarations. Thus, we don't bother
    # generating/passing the exported symbol list file.
    #
    c.libs += -framework CoreFoundation      \
              -framework SystemConfiguration \
              -framework Security
  }
  case 'windows', 'mingw32'
  {
    c.loptions += -Wl,--enable-auto-image-base
    c.libs     += -lws2_32 -lcrypt32 -lbcrypt
  }
  case 'windows'
  {
    c.libs += ws2_32.lib crypt32.lib normaliz.lib advapi32.lib
  }
}

# Export options.
#
lib{curl}:  cc.export.poptions  = "-I$src_base/include"
liba{curl}: cc.export.poptions += -DCURL_STATICLIB

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

# Install headers from the include/curl/ subdirectory only.
#
h{*}:              install = false
include/curl/h{*}: install = include/curl/