CMakeLists.txt

if(WIN32)
  set(CURL_PULL_WS2TCPIP_H ${HAVE_WS2TCPIP_H})
else()
  set(CURL_PULL_SYS_TYPES_H ${HAVE_SYS_TYPES_H})
  set(CURL_PULL_SYS_SOCKET_H ${HAVE_SYS_SOCKET_H})
  set(CURL_PULL_SYS_POLL_H ${HAVE_SYS_POLL_H})
endif()
set(CURL_PULL_STDINT_H ${HAVE_STDINT_H})
set(CURL_PULL_INTTYPES_H ${HAVE_INTTYPES_H})

include(CMake/OtherTests.cmake)

add_definitions(-DHAVE_CONFIG_H)

# For windows, do not allow the compiler to use default target (Vista).
if(WIN32)
  add_definitions(-D_WIN32_WINNT=0x0501)
endif(WIN32)

if(MSVC)
  add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
endif(MSVC)

# Ugly (but functional) way to include "Makefile.inc" by transforming it (= regenerate it).
function(TRANSFORM_MAKEFILE_INC INPUT_FILE OUTPUT_FILE)
  file(READ ${INPUT_FILE} MAKEFILE_INC_TEXT)
  string(REPLACE "$(top_srcdir)"   "\${CURL_SOURCE_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
  string(REPLACE "$(top_builddir)" "\${CURL_BINARY_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})

  string(REGEX REPLACE "\\\\\n" "!" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
  string(REGEX REPLACE "([a-zA-Z_][a-zA-Z0-9_]*)[\t ]*=[\t ]*([^\n]*)" "SET(\\1 \\2)" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
  string(REPLACE "!" "\n" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})

  string(REGEX REPLACE "\\$\\(([a-zA-Z_][a-zA-Z0-9_]*)\\)" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})    # Replace $() with ${}
  string(REGEX REPLACE "@([a-zA-Z_][a-zA-Z0-9_]*)@" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})    # Replace @@ with ${}, even if that may not be read by CMake scripts.
  file(WRITE ${OUTPUT_FILE} ${MAKEFILE_INC_TEXT})

endfunction()

add_subdirectory(lib)
if(BUILD_CURL_EXE)
  add_subdirectory(src)
endif()
if(BUILD_CURL_TESTS)
  add_subdirectory(tests)
endif()

# TODO support GNUTLS, NSS, POLARSSL, AXTLS, CYASSL, WINSSL, DARWINSSL
if(USE_OPENSSL)
  set(SSL_ENABLED 1)
endif()

# 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("WinSSL"        SSL_ENABLED AND USE_WINDOWS_SSPI)
_add_if("OpenSSL"       SSL_ENABLED AND USE_OPENSSL)
_add_if("IPv6"          ENABLE_IPV6)
_add_if("unix-sockets"  USE_UNIX_SOCKETS)
_add_if("libz"          HAVE_LIBZ)
_add_if("AsynchDNS"     USE_ARES OR USE_THREADS_POSIX)
_add_if("IDN"           HAVE_LIBIDN)
# TODO SSP1 (WinSSL) check is missing
_add_if("SSPI"          USE_WINDOWS_SSPI)
_add_if("GSS-API"       HAVE_GSSAPI)
# TODO SSP1 missing for SPNEGO
_add_if("SPNEGO"        NOT CURL_DISABLE_CRYPTO_AUTH AND
                        (HAVE_GSSAPI OR USE_WINDOWS_SSPI))
_add_if("Kerberos"      NOT CURL_DISABLE_CRYPTO_AUTH AND
                        (HAVE_GSSAPI 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_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"     NOT CURL_DISABLE_HTTP AND 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}")

# curl-config needs the following options to be set.
set(CC                      "${CMAKE_C_COMPILER}")
# TODO probably put a -D... options here?
set(CONFIGURE_OPTIONS       "")
# TODO when to set "-DCURL_STATICLIB" for CPPFLAG_CURL_STATICLIB?
set(CPPFLAG_CURL_STATICLIB  "")
# TODO need to set this (see CURL_CHECK_CA_BUNDLE in acinclude.m4)
set(CURL_CA_BUNDLE          "")
set(CURLVERSION             "${CURL_VERSION}")
set(ENABLE_SHARED           "yes")
if(CURL_STATICLIB)
  # Broken: LIBCURL_LIBS below; .a lib is not built
  message(WARNING "Static linking is broken!")
  set(ENABLE_STATIC         "no")
else()
  set(ENABLE_STATIC         "no")
endif()
set(exec_prefix             "\${prefix}")
set(includedir              "\${prefix}/include")
set(LDFLAGS                 "${CMAKE_SHARED_LINKER_FLAGS}")
set(LIBCURL_LIBS            "")
set(libdir                  "${CMAKE_INSTALL_PREFIX}/lib")
# TODO CURL_LIBS also contains absolute paths which don't work with static -l...
foreach(_lib ${CMAKE_C_IMPLICIT_LINK_LIBRARIES} ${CURL_LIBS})
  set(LIBCURL_LIBS          "${LIBCURL_LIBS} -l${_lib}")
endforeach()
# "a" (Linux) or "lib" (Windows)
string(REPLACE "." "" libext "${CMAKE_STATIC_LIBRARY_SUFFIX}")
set(prefix                  "${CMAKE_INSTALL_PREFIX}")
# Set this to "yes" to append all libraries on which -lcurl is dependent
set(REQUIRE_LIB_DEPS        "no")
# SUPPORT_FEATURES
# SUPPORT_PROTOCOLS
set(VERSIONNUM              "${CURL_VERSION_NUM}")

# Finally generate a "curl-config" matching this config
configure_file("${CURL_SOURCE_DIR}/curl-config.in"
               "${CURL_BINARY_DIR}/curl-config" @ONLY)
install(FILES "${CURL_BINARY_DIR}/curl-config"
        DESTINATION bin
        PERMISSIONS
          OWNER_READ OWNER_WRITE OWNER_EXECUTE
          GROUP_READ GROUP_EXECUTE
          WORLD_READ WORLD_EXECUTE)

# Finally generate a pkg-config file matching this config
configure_file("${CURL_SOURCE_DIR}/libcurl.pc.in"
               "${CURL_BINARY_DIR}/libcurl.pc" @ONLY)
install(FILES "${CURL_BINARY_DIR}/libcurl.pc"
        DESTINATION lib/pkgconfig)

# 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()