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

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

# Exported symbols.
#
define esm: file
esm{*}: extension = expsym

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

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

  CURL_LT_SHLIB_VERSIONED_FLAVOUR = 'OPENSSL_'
}

# Generate the exported symbol list file using the interface headers.
#
# Note that upstream auto-generate this file (named as libcurl-symbols.expsym)
# by using the nm utility, dumping symbols from object files and processing
# the output. This, in particular, results in the _curl_jmpenv symbol which
# causes 'cannot export hidden symbol' linker warning.
#
esm{libcurl}: include/curl/h{** -stdcheaders -typecheck-gcc}
{{
  diag sed $> # @@ TMP

  # Examples of the function declarations we need to match:
  #
  # CURL_EXTERN CURLcode curl_easy_recv(CURL *curl, void *buffer, size_t buflen,
  #                                     size_t *n);
  #
  # CURL_EXTERN const struct curl_easyoption *
  # curl_easy_option_by_id (CURLoption id);
  #
  # Note that we need to avoid matching the function calls in macro expansions
  # and mentioning functions in comments. Thus, we disallow the leading
  # spaces, unless the leading CURL_EXTERN specifier is also present in the
  # line.
  #
  cat $path($<) | \
  sed -n -e 's/^(\s*CURL_EXTERN\b.+\b)?(curl_\w+)\s*\(.*/_\2/p' >$path($>)
}}

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

if! $windows
  c.poptions += -DCURL_HIDDEN_SYMBOLS

# Note that the upstream package uses the -pthread compiler/linker option on
# Linux and FreeBSD. The option is unsupported by build2 so we pass
# -D_REENTRANT and -lpthread preprocessor/linker options instead.
#
switch $tclass, $tsys
{
  case 'linux' | 'bsd'
    c.poptions += -D_REENTRANT

  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).
    #
    c.coptions += -Wno-all -Wno-extra -Wno-deprecated-declarations
  }
  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=$out_base/libcurl.vers"
    c.libs     += -lpthread
  }
  case 'macos'
  {
    c.loptions += "-Wl,-exported_symbols_list,$out_base/libcurl.expsym"

# @@ TMP Until erroneous -framework option suppression is fixed in build2.
#
#    c.libs     += -framework CoreFoundation -framework Security
    c.libs     += -Wl,-framework,CoreFoundation -Wl,-framework,Security
  }
  case 'windows', 'mingw32'
  {
    c.loptions += -Wl,--enable-auto-image-base
    c.libs     += -lws2_32 -lcrypt32
  }
  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/