# Copyright 2022 Google LLC. All rights reserved.
#
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file or at
# https://developers.google.com/open-source/licenses/bsd

# CMake build file to host CURL configuration.

# Don't build a shared libcurl.
set(BUILD_SHARED_LIBS OFF)

# Don't build with libdn, librtmp, libssh2, or zlib.
set(USE_LIBIDN2 OFF)
set(USE_LIBRTMP OFF)
set(CURL_USE_LIBSSH2 OFF)
set(CURL_ZLIB OFF CACHE STRING "Force curl not to search for system zlib")
set(BUILD_CURL_EXE OFF)

if(UNIX AND NOT APPLE)
  # Use c-ares to fix static linking on Linux.  Set USE_ARES directly, not the
  # ENABLE_ARES option that triggers a search for c-ares on the system.
  set(USE_ARES 1)
  # This is necessary when we hack the c-ares search, because we break the
  # export target.  We didn't need it anyway.
  set(CURL_ENABLE_EXPORT_TARGET OFF)
endif()

if(WIN32)
  # Use native TLS on Windows.  We could use mbedtls, but only if we also
  # provide a path to CA certs.
  set(CURL_USE_SCHANNEL ON)
else()
  # Force libcurl to use our local mbedtls instead of searching for OpenSSL on
  # the system.
  set(CURL_USE_MBEDTLS ON)
  set(MBEDTLS_INCLUDE_DIRS ../mbedtls/source/include)
  set(MBEDTLS_LIBRARY mbedtls)
  set(MBEDX509_LIBRARY mbedx509)
  set(MBEDCRYPTO_LIBRARY mbedcrypto)
endif()

# With these set in scope of this folder, load the library's own CMakeLists.txt.
add_subdirectory(source)

# Our enabling of c-ares doesn't automatically set a dependency between libcurl
# and c-ares.  Fix that now.
if(USE_ARES)
  target_link_libraries(libcurl_static PUBLIC c-ares)
endif()