CMakeLists.txt

# Helper to populate a list (_items) with a label when conditions (the remaining
# args) are satisfied
function(_add_if label)
  # TODO need to disable policy CMP0054 (CMake 3.1) to allow this indirection
  if(${ARGN})
    set(_items ${_items} "${label}" PARENT_SCOPE)
  endif()
endfunction()

# Clear list and try to detect available features
set(_items)
_add_if("SSL"           SSL_ENABLED)
_add_if("IPv6"          ENABLE_IPV6)
_add_if("unix-sockets"  USE_UNIX_SOCKETS)
_add_if("libz"          HAVE_LIBZ)
find_package(Threads)
# AsynchDNS depends or USE_ARES or pthreads (mutually exclusive)
_add_if("AsynchDNS"     USE_ARES OR CMAKE_USE_PTHREADS_INIT)
_add_if("IDN"           HAVE_LIBIDN)
# TODO SSP1 (WinSSL) check is missing
_add_if("SSPI"          USE_WINDOWS_SSPI)
_add_if("GSS-API"       HAVE_GSS_API)
# TODO SSP1 missing for SPNEGO
_add_if("SPNEGO"        NOT CURL_DISABLE_CRYPTO_AUTH AND
                        (HAVE_GSS_API OR USE_WINDOWS_SSPI))
# NTLM support requires crypto function adaptions from various SSL libs
# TODO alternative SSL libs tests for SSP1, GNUTLS, NSS, DARWINSSL
if(NOT CURL_DISABLE_HTTP AND NOT CURL_DISABLE_CRYPTO_AUTH AND (USE_OPENSSL OR
   USE_WINDOWS_SSPI OR GNUTLS_ENABLED OR NSS_ENABLED OR DARWINSSL_ENABLED))
  _add_if("NTLM"        1)
  # TODO missing option (autoconf: --enable-ntlm-wb)
  _add_if("NTLM_WB"     NTLM_WB_ENABLED)
endif()
# TODO missing option (--enable-tls-srp), depends on GNUTLS_SRP/OPENSSL_SRP
_add_if("TLS-SRP"       USE_TLS_SRP)
# TODO option --with-nghttp2 tests for nghttp2 lib and nghttp2/nghttp2.h header
_add_if("HTTP2"         USE_NGHTTP2)
string(REPLACE ";" " " SUPPORT_FEATURES "${_items}")
message(STATUS "Enabled features: ${SUPPORT_FEATURES}")

# Clear list and try to detect available protocols
set(_items)
_add_if("HTTP"          NOT CURL_DISABLE_HTTP)
_add_if("HTTPS"         NOT CURL_DISABLE_HTTP AND SSL_ENABLED)
_add_if("FTP"           NOT CURL_DISABLE_FTP)
_add_if("FTPS"          NOT CURL_DISABLE_FTP AND SSL_ENABLED)
_add_if("FILE"          NOT CURL_DISABLE_FILE)
_add_if("TELNET"        NOT CURL_DISABLE_TELNET)
_add_if("LDAP"          NOT CURL_DISABLE_LDAP)
# CURL_DISABLE_LDAP implies CURL_DISABLE_LDAPS
# TODO check HAVE_LDAP_SSL (in autoconf this is enabled with --enable-ldaps)
_add_if("LDAPS"         NOT CURL_DISABLE_LDAPS AND
                        ((USE_OPENLDAP AND SSL_ENABLED) OR
                        (NOT USE_OPENLDAP AND HAVE_LDAP_SSL)))
_add_if("DICT"          NOT CURL_DISABLE_DICT)
_add_if("TFTP"          NOT CURL_DISABLE_TFTP)
_add_if("GOPHER"        NOT CURL_DISABLE_GOPHER)
_add_if("POP3"          NOT CURL_DISABLE_POP3)
_add_if("POP3S"         NOT CURL_DISABLE_POP3 AND SSL_ENABLED)
_add_if("IMAP"          NOT CURL_DISABLE_IMAP)
_add_if("IMAPS"         NOT CURL_DISABLE_IMAP AND SSL_ENABLED)
_add_if("SMTP"          NOT CURL_DISABLE_SMTP)
_add_if("SMTPS"         NOT CURL_DISABLE_SMTP AND SSL_ENABLED)
_add_if("SCP"           USE_LIBSSH2)
_add_if("SFTP"          USE_LIBSSH2)
_add_if("RTSP"          NOT CURL_DISABLE_RTSP)
_add_if("RTMP"          USE_LIBRTMP)
list(SORT _items)
string(REPLACE ";" " " SUPPORT_PROTOCOLS "${_items}")
message(STATUS "Enabled protocols: ${SUPPORT_PROTOCOLS}")

# This needs to be run very last so other parts of the scripts can take advantage of this.
if(NOT CURL_CONFIG_HAS_BEEN_RUN_BEFORE)
  set(CURL_CONFIG_HAS_BEEN_RUN_BEFORE 1 CACHE INTERNAL "Flag to track whether this is the first time running CMake or if CMake has been configured before")
endif()

# Installation.
# First, install generated curlbuild.h
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/include/curl/curlbuild.h"
    DESTINATION include/curl )
# Next, install other headers excluding curlbuild.h
install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/curl"
    DESTINATION include
    FILES_MATCHING PATTERN "*.h"
    PATTERN "curlbuild.h" EXCLUDE)


# Workaround for MSVS10 to avoid the Dialog Hell
# FIXME: This could be removed with future version of CMake.
if(MSVC_VERSION EQUAL 1600)
  set(CURL_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/CURL.sln")
  if(EXISTS "${CURL_SLN_FILENAME}")
    file(APPEND "${CURL_SLN_FILENAME}" "\n# This should be regenerated!\n")
  endif()
endif()