ddnet/cmake/FindCurl.cmake

if(NOT CMAKE_CROSSCOMPILING)
  find_package(PkgConfig QUIET)
  pkg_check_modules(PC_CURL libcurl)
endif()

set_extra_dirs_lib(CURL curl)
find_library(CURL_LIBRARY
  NAMES curl
  HINTS ${HINTS_CURL_LIBDIR} ${PC_CURL_LIBDIR} ${PC_CURL_LIBRARY_DIRS}
  PATHS ${PATHS_CURL_LIBDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)
set_extra_dirs_include(CURL curl "${CURL_LIBRARY}")
find_path(CURL_INCLUDEDIR curl/curl.h
  HINTS ${HINTS_CURL_INCLUDEDIR} ${PC_CURL_INCLUDEDIR} ${PC_CURL_INCLUDE_DIRS}
  PATHS ${PATHS_CURL_INCLUDEDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Curl DEFAULT_MSG CURL_LIBRARY CURL_INCLUDEDIR)

mark_as_advanced(CURL_LIBRARY CURL_INCLUDEDIR)

if(CURL_FOUND)
  is_bundled(CURL_BUNDLED "${CURL_LIBRARY}")
  set(CURL_LIBRARIES ${CURL_LIBRARY})
  set(CURL_INCLUDE_DIRS ${CURL_INCLUDEDIR})
  if(CURL_BUNDLED AND TARGET_OS STREQUAL "linux")
    find_library(CURL_LIBRARY_SSL
      NAMES ssl
      HINTS ${EXTRA_CURL_LIBDIR}
    )
    find_library(CURL_LIBRARY_CRYPTO
      NAMES crypto
      HINTS ${EXTRA_CURL_LIBDIR}
    )
    # If we don't add `dl`, we get a missing reference to `dlclose`:
    # ```
    # /usr/bin/ld: ../ddnet-libs/curl/linux/lib64/libcrypto.a(dso_dlfcn.o): undefined reference to symbol 'dlclose@@GLIBC_2.2.5'
    # ```
    #
    # Order matters, SSL needs to be linked before CRYPTO, otherwise we also get
    # undefined symbols.
    list(APPEND CURL_LIBRARIES ${CURL_LIBRARY_SSL} ${CURL_LIBRARY_CRYPTO} dl)
  endif()

  if(CURL_BUNDLED AND TARGET_OS STREQUAL "windows")
    set(CURL_COPY_FILES
      "${EXTRA_CURL_LIBDIR}/libcurl.dll"
    )
  else()
    set(CURL_COPY_FILES)
  endif()
endif()