CMakeLists.txt

   1 #***************************************************************************
   2 #                                  _   _ ____  _
   3 #  Project                     ___| | | |  _ \| |
   4 #                             / __| | | | |_) | |
   5 #                            | (__| |_| |  _ <| |___
   6 #                             \___|\___/|_| \_\_____|
   7 #
   8 # Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
   9 #
  10 # This software is licensed as described in the file COPYING, which
  11 # you should have received as part of this distribution. The terms
  12 # are also available at https://curl.haxx.se/docs/copyright.html.
  13 #
  14 # You may opt to use, copy, modify, merge, publish, distribute and/or sell
  15 # copies of the Software, and permit persons to whom the Software is
  16 # furnished to do so, under the terms of the COPYING file.
  17 #
  18 # This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19 # KIND, either express or implied.
  20 #
  21 ###########################################################################
  22 # curl/libcurl CMake script
  23 # by Tetetest and Sukender (Benoit Neil)
  24
  25 # TODO:
  26 # The output .so file lacks the soname number which we currently have within the lib/Makefile.am file
  27 # Add full (4 or 5 libs) SSL support
  28 # Add INSTALL target (EXTRA_DIST variables in Makefile.am may be moved to Makefile.inc so that CMake/CPack is aware of what's to include).
  29 # Check on all possible platforms
  30 # Test with as many configurations possible (With or without any option)
  31 # Create scripts that help keeping the CMake build system up to date (to reduce maintenance). According to Tetetest:
  32 #  - lists of headers that 'configure' checks for;
  33 #  - curl-specific tests (the ones that are in m4/curl-*.m4 files);
  34 #  - (most obvious thing:) curl version numbers.
  35 # Add documentation subproject
  36 #
  37 # To check:
  38 # (From Daniel Stenberg) The cmake build selected to run gcc with -fPIC on my box while the plain configure script did not.
  39 # (From Daniel Stenberg) The gcc command line use neither -g nor any -O options. As a developer, I also treasure our configure scripts's --enable-debug option that sets a long range of "picky" compiler options.
  40 cmake_minimum_required(VERSION 3.2...3.16 FATAL_ERROR)
  41
  42 set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")
  43 include(Utilities)
  44 include(Macros)
  45 include(CMakeDependentOption)
  46 include(CheckCCompilerFlag)
  47
  48 project(CURL C)
  49
  50 file(STRINGS ${CURL_SOURCE_DIR}/include/curl/curlver.h CURL_VERSION_H_CONTENTS REGEX "#define LIBCURL_VERSION( |_NUM )")
  51 string(REGEX MATCH "#define LIBCURL_VERSION \"[^\"]*"
  52   CURL_VERSION ${CURL_VERSION_H_CONTENTS})
  53 string(REGEX REPLACE "[^\"]+\"" "" CURL_VERSION ${CURL_VERSION})
  54 string(REGEX MATCH "#define LIBCURL_VERSION_NUM 0x[0-9a-fA-F]+"
  55   CURL_VERSION_NUM ${CURL_VERSION_H_CONTENTS})
  56 string(REGEX REPLACE "[^0]+0x" "" CURL_VERSION_NUM ${CURL_VERSION_NUM})
  57
  58
  59 # Setup package meta-data
  60 # SET(PACKAGE "curl")
  61 message(STATUS "curl version=[${CURL_VERSION}]")
  62 # SET(PACKAGE_TARNAME "curl")
  63 # SET(PACKAGE_NAME "curl")
  64 # SET(PACKAGE_VERSION "-")
  65 # SET(PACKAGE_STRING "curl-")
  66 # SET(PACKAGE_BUGREPORT "a suitable curl mailing list => https://curl.haxx.se/mail/")
  67 set(OPERATING_SYSTEM "${CMAKE_SYSTEM_NAME}")
  68 set(OS "\"${CMAKE_SYSTEM_NAME}\"")
  69
  70 include_directories(${CURL_SOURCE_DIR}/include)
  71
  72 option(CURL_WERROR "Turn compiler warnings into errors" OFF)
  73 option(PICKY_COMPILER "Enable picky compiler options" ON)
  74 option(BUILD_CURL_EXE "Set to ON to build curl executable." ON)
  75 option(BUILD_SHARED_LIBS "Build shared libraries" ON)
  76 option(ENABLE_ARES "Set to ON to enable c-ares support" OFF)
  77 if(WIN32)
  78   option(CURL_STATIC_CRT "Set to ON to build libcurl with static CRT on Windows (/MT)." OFF)
  79   option(ENABLE_INET_PTON "Set to OFF to prevent usage of inet_pton when building against modern SDKs while still requiring compatibility with older Windows versions, such as Windows XP, Windows Server 2003 etc." ON)
  80   option(ENABLE_UNICODE "Set to ON to use the Unicode version of the Windows API functions" OFF)
  81   set(CURL_TARGET_WINDOWS_VERSION "" CACHE STRING "Minimum target Windows version as hex string")
  82   if(CURL_TARGET_WINDOWS_VERSION)
  83     add_definitions(-D_WIN32_WINNT=${CURL_TARGET_WINDOWS_VERSION})
  84     set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_WIN32_WINNT=${CURL_TARGET_WINDOWS_VERSION}")
  85   elseif(ENABLE_INET_PTON)
  86     # _WIN32_WINNT_VISTA (0x0600)
  87     add_definitions(-D_WIN32_WINNT=0x0600)
  88     set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_WIN32_WINNT=0x0600")
  89   else()
  90     # _WIN32_WINNT_WINXP (0x0501)
  91     add_definitions(-D_WIN32_WINNT=0x0501)
  92     set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_WIN32_WINNT=0x0501")
  93   endif()
  94   if(ENABLE_UNICODE)
  95     add_definitions(-DUNICODE -D_UNICODE)
  96     if(MINGW)
  97       add_compile_options(-municode)
  98     endif()
  99   endif()
 100 endif()
 101 option(CURL_LTO "Turn on compiler Link Time Optimizations" OFF)
 102
 103 cmake_dependent_option(ENABLE_THREADED_RESOLVER "Set to ON to enable threaded DNS lookup"
 104         ON "NOT ENABLE_ARES"
 105         OFF)
 106
 107 option(ENABLE_DEBUG "Set to ON to enable curl debug features" OFF)
 108 option(ENABLE_CURLDEBUG "Set to ON to build with TrackMemory feature enabled" OFF)
 109
 110 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
 111   if(PICKY_COMPILER)
 112     foreach(_CCOPT -pedantic -Wall -W -Wpointer-arith -Wwrite-strings -Wunused -Wshadow -Winline -Wnested-externs -Wmissing-declarations -Wmissing-prototypes -Wfloat-equal -Wsign-compare -Wundef -Wendif-labels -Wstrict-prototypes -Wdeclaration-after-statement -Wstrict-aliasing=3 -Wcast-align -Wtype-limits -Wold-style-declaration -Wmissing-parameter-type -Wempty-body -Wclobbered -Wignored-qualifiers -Wconversion -Wvla -Wdouble-promotion)
 113       # surprisingly, CHECK_C_COMPILER_FLAG needs a new variable to store each new
 114       # test result in.
 115       string(MAKE_C_IDENTIFIER "OPT${_CCOPT}" _optvarname)
 116       check_c_compiler_flag(${_CCOPT} ${_optvarname})
 117       if(${_optvarname})
 118         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_CCOPT}")
 119       endif()
 120     endforeach()
 121     foreach(_CCOPT long-long multichar format-nonliteral sign-conversion system-headers pedantic-ms-format)
 122       # GCC only warns about unknown -Wno- options if there are also other diagnostic messages,
 123       # so test for the positive form instead
 124       string(MAKE_C_IDENTIFIER "OPT${_CCOPT}" _optvarname)
 125       check_c_compiler_flag("-W${_CCOPT}" ${_optvarname})
 126       if(${_optvarname})
 127         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-${_CCOPT}")
 128       endif()
 129     endforeach()
 130   endif()
 131 endif()
 132
 133 if(ENABLE_DEBUG)
 134   # DEBUGBUILD will be defined only for Debug builds
 135   set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:Debug>:DEBUGBUILD>)
 136   set(ENABLE_CURLDEBUG ON)
 137 endif()
 138
 139 if(ENABLE_CURLDEBUG)
 140   set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS CURLDEBUG)
 141 endif()
 142
 143 # For debug libs and exes, add "-d" postfix
 144 if(NOT DEFINED CMAKE_DEBUG_POSTFIX)
 145   set(CMAKE_DEBUG_POSTFIX "-d")
 146 endif()
 147
 148 # initialize CURL_LIBS
 149 set(CURL_LIBS "")
 150
 151 if(ENABLE_ARES)
 152   set(USE_ARES 1)
 153   find_package(CARES REQUIRED)
 154   list(APPEND CURL_LIBS ${CARES_LIBRARY})
 155 endif()
 156
 157 include(CurlSymbolHiding)
 158
 159 option(HTTP_ONLY "disables all protocols except HTTP (This overrides all CURL_DISABLE_* options)" OFF)
 160 mark_as_advanced(HTTP_ONLY)
 161 option(CURL_DISABLE_FTP "disables FTP" OFF)
 162 mark_as_advanced(CURL_DISABLE_FTP)
 163 option(CURL_DISABLE_LDAP "disables LDAP" OFF)
 164 mark_as_advanced(CURL_DISABLE_LDAP)
 165 option(CURL_DISABLE_TELNET "disables Telnet" OFF)
 166 mark_as_advanced(CURL_DISABLE_TELNET)
 167 option(CURL_DISABLE_DICT "disables DICT" OFF)
 168 mark_as_advanced(CURL_DISABLE_DICT)
 169 option(CURL_DISABLE_FILE "disables FILE" OFF)
 170 mark_as_advanced(CURL_DISABLE_FILE)
 171 option(CURL_DISABLE_TFTP "disables TFTP" OFF)
 172 mark_as_advanced(CURL_DISABLE_TFTP)
 173 option(CURL_DISABLE_HTTP "disables HTTP" OFF)
 174 mark_as_advanced(CURL_DISABLE_HTTP)
 175
 176 option(CURL_DISABLE_LDAPS "to disable LDAPS" OFF)
 177 mark_as_advanced(CURL_DISABLE_LDAPS)
 178
 179 option(CURL_DISABLE_RTSP "to disable RTSP" OFF)
 180 mark_as_advanced(CURL_DISABLE_RTSP)
 181 option(CURL_DISABLE_PROXY "to disable proxy" OFF)
 182 mark_as_advanced(CURL_DISABLE_PROXY)
 183 option(CURL_DISABLE_POP3 "to disable POP3" OFF)
 184 mark_as_advanced(CURL_DISABLE_POP3)
 185 option(CURL_DISABLE_IMAP "to disable IMAP" OFF)
 186 mark_as_advanced(CURL_DISABLE_IMAP)
 187 option(CURL_DISABLE_SMTP "to disable SMTP" OFF)
 188 mark_as_advanced(CURL_DISABLE_SMTP)
 189 option(CURL_DISABLE_GOPHER "to disable Gopher" OFF)
 190 mark_as_advanced(CURL_DISABLE_GOPHER)
 191 option(CURL_DISABLE_MQTT "to disable MQTT" OFF)
 192 mark_as_advanced(CURL_DISABLE_MQTT)
 193
 194 if(HTTP_ONLY)
 195   set(CURL_DISABLE_DICT ON)
 196   set(CURL_DISABLE_FILE ON)
 197   set(CURL_DISABLE_FTP ON)
 198   set(CURL_DISABLE_GOPHER ON)
 199   set(CURL_DISABLE_IMAP ON)
 200   set(CURL_DISABLE_LDAP ON)
 201   set(CURL_DISABLE_LDAPS ON)
 202   set(CURL_DISABLE_MQTT ON)
 203   set(CURL_DISABLE_POP3 ON)
 204   set(CURL_DISABLE_RTSP ON)
 205   set(CURL_DISABLE_SMB ON)
 206   set(CURL_DISABLE_SMTP ON)
 207   set(CURL_DISABLE_TELNET ON)
 208   set(CURL_DISABLE_TFTP ON)
 209 endif()
 210
 211 option(CURL_DISABLE_COOKIES "to disable cookies support" OFF)
 212 mark_as_advanced(CURL_DISABLE_COOKIES)
 213
 214 option(CURL_DISABLE_CRYPTO_AUTH "to disable cryptographic authentication" OFF)
 215 mark_as_advanced(CURL_DISABLE_CRYPTO_AUTH)
 216 option(CURL_DISABLE_VERBOSE_STRINGS "to disable verbose strings" OFF)
 217 mark_as_advanced(CURL_DISABLE_VERBOSE_STRINGS)
 218 option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
 219 mark_as_advanced(ENABLE_IPV6)
 220 if(ENABLE_IPV6 AND NOT WIN32)
 221   include(CheckStructHasMember)
 222   check_struct_has_member("struct sockaddr_in6" sin6_addr "netinet/in.h"
 223                           HAVE_SOCKADDR_IN6_SIN6_ADDR)
 224   check_struct_has_member("struct sockaddr_in6" sin6_scope_id "netinet/in.h"
 225                           HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID)
 226   if(NOT HAVE_SOCKADDR_IN6_SIN6_ADDR)
 227     message(WARNING "struct sockaddr_in6 not available, disabling IPv6 support")
 228     # Force the feature off as this name is used as guard macro...
 229     set(ENABLE_IPV6 OFF
 230         CACHE BOOL "Define if you want to enable IPv6 support" FORCE)
 231   endif()
 232 endif()
 233
 234 if(USE_MANUAL)
 235     #nroff is currently only used when USE_MANUAL is set, so we can prevent the warning of no *NROFF if USE_MANUAL is OFF (or not defined), by not even looking for NROFF..
 236     curl_nroff_check()
 237 endif()
 238 find_package(Perl)
 239
 240 cmake_dependent_option(ENABLE_MANUAL "to provide the built-in manual"
 241     ON "NROFF_USEFUL;PERL_FOUND"
 242     OFF)
 243
 244 if(ENABLE_MANUAL)
 245   set(USE_MANUAL ON)
 246 endif()
 247
 248 if(CURL_STATIC_CRT)
 249   set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
 250   set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /MT")
 251   set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /MTd")
 252 endif()
 253
 254 # Disable warnings on Borland to avoid changing 3rd party code.
 255 if(BORLAND)
 256   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w-")
 257 endif()
 258
 259 # If we are on AIX, do the _ALL_SOURCE magic
 260 if(${CMAKE_SYSTEM_NAME} MATCHES AIX)
 261   set(_ALL_SOURCE 1)
 262 endif()
 263
 264 # Include all the necessary files for macros
 265 include(CMakePushCheckState)
 266 include(CheckFunctionExists)
 267 include(CheckIncludeFile)
 268 include(CheckIncludeFiles)
 269 include(CheckLibraryExists)
 270 include(CheckSymbolExists)
 271 include(CheckTypeSize)
 272 include(CheckCSourceCompiles)
 273
 274 # On windows preload settings
 275 if(WIN32)
 276   set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_WINSOCKAPI_=")
 277   include(${CMAKE_CURRENT_SOURCE_DIR}/CMake/Platforms/WindowsCache.cmake)
 278 endif()
 279
 280 if(ENABLE_THREADED_RESOLVER)
 281   find_package(Threads REQUIRED)
 282   if(WIN32)
 283     set(USE_THREADS_WIN32 ON)
 284   else()
 285     set(USE_THREADS_POSIX ${CMAKE_USE_PTHREADS_INIT})
 286     set(HAVE_PTHREAD_H ${CMAKE_USE_PTHREADS_INIT})
 287   endif()
 288   set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
 289 endif()
 290
 291 # Check for all needed libraries
 292 check_library_exists_concat("${CMAKE_DL_LIBS}" dlopen HAVE_LIBDL)
 293 check_library_exists_concat("socket" connect      HAVE_LIBSOCKET)
 294 check_library_exists("c" gethostbyname "" NOT_NEED_LIBNSL)
 295
 296 # Yellowtab Zeta needs different libraries than BeOS 5.
 297 if(BEOS)
 298   set(NOT_NEED_LIBNSL 1)
 299   check_library_exists_concat("bind" gethostbyname HAVE_LIBBIND)
 300   check_library_exists_concat("bnetapi" closesocket HAVE_LIBBNETAPI)
 301 endif()
 302
 303 if(NOT NOT_NEED_LIBNSL)
 304   check_library_exists_concat("nsl"    gethostbyname  HAVE_LIBNSL)
 305 endif()
 306
 307 check_function_exists(gethostname HAVE_GETHOSTNAME)
 308
 309 if(WIN32)
 310   check_library_exists_concat("ws2_32" getch        HAVE_LIBWS2_32)
 311   check_library_exists_concat("winmm"  getch        HAVE_LIBWINMM)
 312   list(APPEND CURL_LIBS "advapi32")
 313 endif()
 314
 315 # check SSL libraries
 316 # TODO support GnuTLS
 317 if(CMAKE_USE_WINSSL)
 318   message(FATAL_ERROR "The cmake option CMAKE_USE_WINSSL was renamed to CMAKE_USE_SCHANNEL.")
 319 endif()
 320
 321 if(APPLE)
 322   option(CMAKE_USE_SECTRANSP "enable Apple OS native SSL/TLS" OFF)
 323 endif()
 324 if(WIN32)
 325   option(CMAKE_USE_SCHANNEL "enable Windows native SSL/TLS" OFF)
 326   cmake_dependent_option(CURL_WINDOWS_SSPI "Use windows libraries to allow NTLM authentication without openssl" ON
 327     CMAKE_USE_SCHANNEL OFF)
 328 endif()
 329 option(CMAKE_USE_MBEDTLS "Enable mbedTLS for SSL/TLS" OFF)
 330 option(CMAKE_USE_BEARSSL "Enable BearSSL for SSL/TLS" OFF)
 331 option(CMAKE_USE_NSS "Enable NSS for SSL/TLS" OFF)
 332 option(CMAKE_USE_WOLFSSL "enable wolfSSL for SSL/TLS" OFF)
 333
 334 set(openssl_default ON)
 335 if(WIN32 OR CMAKE_USE_SECTRANSP OR CMAKE_USE_SCHANNEL OR CMAKE_USE_MBEDTLS OR CMAKE_USE_NSS OR CMAKE_USE_WOLFSSL)
 336   set(openssl_default OFF)
 337 endif()
 338 option(CMAKE_USE_OPENSSL "Use OpenSSL code. Experimental" ${openssl_default})
 339
 340 count_true(enabled_ssl_options_count
 341   CMAKE_USE_SCHANNEL
 342   CMAKE_USE_SECTRANSP
 343   CMAKE_USE_OPENSSL
 344   CMAKE_USE_MBEDTLS
 345   CMAKE_USE_BEARSSL
 346   CMAKE_USE_NSS
 347   CMAKE_USE_WOLFSSL
 348 )
 349 if(enabled_ssl_options_count GREATER "1")
 350   set(CURL_WITH_MULTI_SSL ON)
 351 endif()
 352
 353 if(CMAKE_USE_SCHANNEL)
 354   set(SSL_ENABLED ON)
 355   set(USE_SCHANNEL ON) # Windows native SSL/TLS support
 356   set(USE_WINDOWS_SSPI ON) # CMAKE_USE_SCHANNEL implies CURL_WINDOWS_SSPI
 357   list(APPEND CURL_LIBS "crypt32")
 358 endif()
 359 if(CURL_WINDOWS_SSPI)
 360   set(USE_WINDOWS_SSPI ON)
 361   set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -DSECURITY_WIN32")
 362 endif()
 363
 364 if(CMAKE_USE_DARWINSSL)
 365   message(FATAL_ERROR "The cmake option CMAKE_USE_DARWINSSL was renamed to CMAKE_USE_SECTRANSP.")
 366 endif()
 367
 368 if(CMAKE_USE_SECTRANSP)
 369   find_library(COREFOUNDATION_FRAMEWORK "CoreFoundation")
 370   if(NOT COREFOUNDATION_FRAMEWORK)
 371       message(FATAL_ERROR "CoreFoundation framework not found")
 372   endif()
 373
 374   find_library(SECURITY_FRAMEWORK "Security")
 375   if(NOT SECURITY_FRAMEWORK)
 376      message(FATAL_ERROR "Security framework not found")
 377   endif()
 378
 379   set(SSL_ENABLED ON)
 380   set(USE_SECTRANSP ON)
 381   list(APPEND CURL_LIBS "${COREFOUNDATION_FRAMEWORK}" "${SECURITY_FRAMEWORK}")
 382 endif()
 383
 384 if(CMAKE_USE_OPENSSL)
 385   find_package(OpenSSL REQUIRED)
 386   set(SSL_ENABLED ON)
 387   set(USE_OPENSSL ON)
 388
 389   # Depend on OpenSSL via imported targets if supported by the running
 390   # version of CMake.  This allows our dependents to get our dependencies
 391   # transitively.
 392   if(NOT CMAKE_VERSION VERSION_LESS 3.4)
 393     list(APPEND CURL_LIBS OpenSSL::SSL OpenSSL::Crypto)
 394   else()
 395     list(APPEND CURL_LIBS ${OPENSSL_LIBRARIES})
 396     include_directories(${OPENSSL_INCLUDE_DIR})
 397   endif()
 398
 399   set(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
 400   check_include_file("openssl/crypto.h" HAVE_OPENSSL_CRYPTO_H)
 401   check_include_file("openssl/err.h"    HAVE_OPENSSL_ERR_H)
 402   check_include_file("openssl/pem.h"    HAVE_OPENSSL_PEM_H)
 403   check_include_file("openssl/rsa.h"    HAVE_OPENSSL_RSA_H)
 404   check_include_file("openssl/ssl.h"    HAVE_OPENSSL_SSL_H)
 405   check_include_file("openssl/x509.h"   HAVE_OPENSSL_X509_H)
 406   check_include_file("openssl/rand.h"   HAVE_OPENSSL_RAND_H)
 407   check_symbol_exists(RAND_status "${CURL_INCLUDES}" HAVE_RAND_STATUS)
 408   check_symbol_exists(RAND_screen "${CURL_INCLUDES}" HAVE_RAND_SCREEN)
 409   check_symbol_exists(RAND_egd    "${CURL_INCLUDES}" HAVE_RAND_EGD)
 410 endif()
 411
 412 if(CMAKE_USE_MBEDTLS)
 413   find_package(MbedTLS REQUIRED)
 414   set(SSL_ENABLED ON)
 415   set(USE_MBEDTLS ON)
 416   list(APPEND CURL_LIBS ${MBEDTLS_LIBRARIES})
 417   include_directories(${MBEDTLS_INCLUDE_DIRS})
 418 endif()
 419
 420 if(CMAKE_USE_BEARSSL)
 421   find_package(BearSSL REQUIRED)
 422   set(SSL_ENABLED ON)
 423   set(USE_BEARSSL ON)
 424   list(APPEND CURL_LIBS ${BEARSSL_LIBRARY})
 425   include_directories(${BEARSSL_INCLUDE_DIRS})
 426 endif()
 427
 428 if(CMAKE_USE_WOLFSSL)
 429   find_package(WolfSSL REQUIRED)
 430   set(SSL_ENABLED ON)
 431   set(USE_WOLFSSL ON)
 432   list(APPEND CURL_LIBS ${WolfSSL_LIBRARIES})
 433   include_directories(${WolfSSL_INCLUDE_DIRS})
 434 endif()
 435
 436 if(CMAKE_USE_NSS)
 437   find_package(NSS REQUIRED)
 438   include_directories(${NSS_INCLUDE_DIRS})
 439   list(APPEND CURL_LIBS ${NSS_LIBRARIES})
 440   set(SSL_ENABLED ON)
 441   set(USE_NSS ON)
 442   cmake_push_check_state()
 443   set(CMAKE_REQUIRED_INCLUDES ${NSS_INCLUDE_DIRS})
 444   set(CMAKE_REQUIRED_LIBRARIES ${NSS_LIBRARIES})
 445   check_symbol_exists(PK11_CreateManagedGenericObject "pk11pub.h" HAVE_PK11_CREATEMANAGEDGENERICOBJECT)
 446   cmake_pop_check_state()
 447 endif()
 448
 449 option(USE_NGHTTP2 "Use Nghttp2 library" OFF)
 450 if(USE_NGHTTP2)
 451   find_package(NGHTTP2 REQUIRED)
 452   include_directories(${NGHTTP2_INCLUDE_DIRS})
 453   list(APPEND CURL_LIBS ${NGHTTP2_LIBRARIES})
 454 endif()
 455
 456 function(CheckQuicSupportInOpenSSL)
 457   # Be sure that the OpenSSL library actually supports QUIC.
 458   cmake_push_check_state()
 459   set(CMAKE_REQUIRED_INCLUDES   "${OPENSSL_INCLUDE_DIR}")
 460   set(CMAKE_REQUIRED_LIBRARIES  "${OPENSSL_LIBRARIES}")
 461   check_symbol_exists(SSL_CTX_set_quic_method "openssl/ssl.h" HAVE_SSL_CTX_SET_QUIC_METHOD)
 462   if(NOT HAVE_SSL_CTX_SET_QUIC_METHOD)
 463     message(FATAL_ERROR "QUIC support is missing in OpenSSL/boringssl. Try setting -DOPENSSL_ROOT_DIR")
 464   endif()
 465   cmake_pop_check_state()
 466 endfunction()
 467
 468 option(USE_NGTCP2 "Use ngtcp2 and nghttp3 libraries for HTTP/3 support" OFF)
 469 if(USE_NGTCP2)
 470   if(USE_OPENSSL)
 471     find_package(NGTCP2 REQUIRED OpenSSL)
 472     CheckQuicSupportInOpenSSL()
 473   elseif(USE_GNUTLS)
 474     # TODO add GnuTLS support as vtls library.
 475     find_package(NGTCP2 REQUIRED GnuTLS)
 476   else()
 477     message(FATAL_ERROR "ngtcp2 requires OpenSSL or GnuTLS")
 478   endif()
 479   set(USE_NGTCP2 ON)
 480   include_directories(${NGTCP2_INCLUDE_DIRS})
 481   list(APPEND CURL_LIBS ${NGTCP2_LIBRARIES})
 482
 483   find_package(NGHTTP3 REQUIRED)
 484   set(USE_NGHTTP3 ON)
 485   include_directories(${NGHTTP3_INCLUDE_DIRS})
 486   list(APPEND CURL_LIBS ${NGHTTP3_LIBRARIES})
 487 endif()
 488
 489 option(USE_QUICHE "Use quiche library for HTTP/3 support" OFF)
 490 if(USE_QUICHE)
 491   if(USE_NGTCP2)
 492     message(FATAL_ERROR "Only one HTTP/3 backend can be selected!")
 493   endif()
 494   find_package(QUICHE REQUIRED)
 495   CheckQuicSupportInOpenSSL()
 496   set(USE_QUICHE ON)
 497   include_directories(${QUICHE_INCLUDE_DIRS})
 498   list(APPEND CURL_LIBS ${QUICHE_LIBRARIES})
 499   cmake_push_check_state()
 500   set(CMAKE_REQUIRED_INCLUDES   "${QUICHE_INCLUDE_DIRS}")
 501   set(CMAKE_REQUIRED_LIBRARIES  "${QUICHE_LIBRARIES}")
 502   check_symbol_exists(quiche_conn_set_qlog_fd "quiche.h" HAVE_QUICHE_CONN_SET_QLOG_FD)
 503   cmake_pop_check_state()
 504 endif()
 505
 506 if(WIN32)
 507   set(USE_WIN32_CRYPTO ON)
 508 endif()
 509
 510 if(NOT CURL_DISABLE_LDAP)
 511   if(WIN32)
 512     option(USE_WIN32_LDAP "Use Windows LDAP implementation" ON)
 513     if(USE_WIN32_LDAP)
 514       check_library_exists_concat("wldap32" cldap_open HAVE_WLDAP32)
 515       if(NOT HAVE_WLDAP32)
 516         set(USE_WIN32_LDAP OFF)
 517       endif()
 518     endif()
 519   endif()
 520
 521   option(CMAKE_USE_OPENLDAP "Use OpenLDAP code." OFF)
 522   mark_as_advanced(CMAKE_USE_OPENLDAP)
 523   set(CMAKE_LDAP_LIB "ldap" CACHE STRING "Name or full path to ldap library")
 524   set(CMAKE_LBER_LIB "lber" CACHE STRING "Name or full path to lber library")
 525
 526   if(CMAKE_USE_OPENLDAP AND USE_WIN32_LDAP)
 527     message(FATAL_ERROR "Cannot use USE_WIN32_LDAP and CMAKE_USE_OPENLDAP at the same time")
 528   endif()
 529
 530   # Now that we know, we're not using windows LDAP...
 531   if(USE_WIN32_LDAP)
 532     check_include_file_concat("winldap.h" HAVE_WINLDAP_H)
 533     check_include_file_concat("winber.h"  HAVE_WINBER_H)
 534   else()
 535     # Check for LDAP
 536     set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES})
 537     check_library_exists_concat(${CMAKE_LDAP_LIB} ldap_init HAVE_LIBLDAP)
 538     check_library_exists_concat(${CMAKE_LBER_LIB} ber_init HAVE_LIBLBER)
 539
 540     set(CMAKE_REQUIRED_INCLUDES_BAK ${CMAKE_REQUIRED_INCLUDES})
 541     set(CMAKE_LDAP_INCLUDE_DIR "" CACHE STRING "Path to LDAP include directory")
 542     if(CMAKE_LDAP_INCLUDE_DIR)
 543       list(APPEND CMAKE_REQUIRED_INCLUDES ${CMAKE_LDAP_INCLUDE_DIR})
 544     endif()
 545     check_include_file_concat("ldap.h"           HAVE_LDAP_H)
 546     check_include_file_concat("lber.h"           HAVE_LBER_H)
 547
 548     if(NOT HAVE_LDAP_H)
 549       message(STATUS "LDAP_H not found CURL_DISABLE_LDAP set ON")
 550       set(CURL_DISABLE_LDAP ON CACHE BOOL "" FORCE)
 551       set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_BAK}) #LDAP includes won't be used
 552     elseif(NOT HAVE_LIBLDAP)
 553       message(STATUS "LDAP library '${CMAKE_LDAP_LIB}' not found CURL_DISABLE_LDAP set ON")
 554       set(CURL_DISABLE_LDAP ON CACHE BOOL "" FORCE)
 555       set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_BAK}) #LDAP includes won't be used
 556     else()
 557       if(CMAKE_USE_OPENLDAP)
 558         set(USE_OPENLDAP ON)
 559       endif()
 560       if(CMAKE_LDAP_INCLUDE_DIR)
 561         include_directories(${CMAKE_LDAP_INCLUDE_DIR})
 562       endif()
 563       set(NEED_LBER_H ON)
 564       set(_HEADER_LIST)
 565       if(HAVE_WINDOWS_H)
 566         list(APPEND _HEADER_LIST "windows.h")
 567       endif()
 568       if(HAVE_SYS_TYPES_H)
 569         list(APPEND _HEADER_LIST "sys/types.h")
 570       endif()
 571       list(APPEND _HEADER_LIST "ldap.h")
 572
 573       set(_SRC_STRING "")
 574       foreach(_HEADER ${_HEADER_LIST})
 575         set(_INCLUDE_STRING "${_INCLUDE_STRING}#include <${_HEADER}>\n")
 576       endforeach()
 577
 578       set(_SRC_STRING
 579         "
 580         ${_INCLUDE_STRING}
 581         int main(int argc, char ** argv)
 582         {
 583           BerValue *bvp = NULL;
 584           BerElement *bep = ber_init(bvp);
 585           ber_free(bep, 1);
 586           return 0;
 587         }"
 588       )
 589       set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -DLDAP_DEPRECATED=1")
 590       list(APPEND CMAKE_REQUIRED_LIBRARIES ${CMAKE_LDAP_LIB})
 591       if(HAVE_LIBLBER)
 592         list(APPEND CMAKE_REQUIRED_LIBRARIES ${CMAKE_LBER_LIB})
 593       endif()
 594       check_c_source_compiles("${_SRC_STRING}" NOT_NEED_LBER_H)
 595       unset(CMAKE_REQUIRED_LIBRARIES)
 596
 597       if(NOT_NEED_LBER_H)
 598         set(NEED_LBER_H OFF)
 599       else()
 600         set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -DNEED_LBER_H")
 601       endif()
 602     endif()
 603   endif()
 604 endif()
 605
 606 # No ldap, no ldaps.
 607 if(CURL_DISABLE_LDAP)
 608   if(NOT CURL_DISABLE_LDAPS)
 609     message(STATUS "LDAP needs to be enabled to support LDAPS")
 610     set(CURL_DISABLE_LDAPS ON CACHE BOOL "" FORCE)
 611   endif()
 612 endif()
 613
 614 if(NOT CURL_DISABLE_LDAPS)
 615   check_include_file_concat("ldap_ssl.h" HAVE_LDAP_SSL_H)
 616   check_include_file_concat("ldapssl.h"  HAVE_LDAPSSL_H)
 617 endif()
 618
 619 # Check for idn
 620 check_library_exists_concat("idn2" idn2_lookup_ul HAVE_LIBIDN2)
 621
 622 # Check for symbol dlopen (same as HAVE_LIBDL)
 623 check_library_exists("${CURL_LIBS}" dlopen "" HAVE_DLOPEN)
 624
 625 option(CURL_ZLIB "Set to ON to enable building curl with zlib support." ON)
 626 set(HAVE_LIBZ OFF)
 627 set(HAVE_ZLIB_H OFF)
 628 set(USE_ZLIB OFF)
 629 if(CURL_ZLIB)
 630   find_package(ZLIB QUIET)
 631   if(ZLIB_FOUND)
 632     set(HAVE_ZLIB_H ON)
 633     set(HAVE_LIBZ ON)
 634     set(USE_ZLIB ON)
 635
 636     # Depend on ZLIB via imported targets if supported by the running
 637     # version of CMake.  This allows our dependents to get our dependencies
 638     # transitively.
 639     if(NOT CMAKE_VERSION VERSION_LESS 3.4)
 640       list(APPEND CURL_LIBS ZLIB::ZLIB)
 641     else()
 642       list(APPEND CURL_LIBS ${ZLIB_LIBRARIES})
 643       include_directories(${ZLIB_INCLUDE_DIRS})
 644     endif()
 645     list(APPEND CMAKE_REQUIRED_INCLUDES ${ZLIB_INCLUDE_DIRS})
 646   endif()
 647 endif()
 648
 649 option(CURL_BROTLI "Set to ON to enable building curl with brotli support." OFF)
 650 set(HAVE_BROTLI OFF)
 651 if(CURL_BROTLI)
 652   find_package(Brotli QUIET)
 653   if(BROTLI_FOUND)
 654     set(HAVE_BROTLI ON)
 655     list(APPEND CURL_LIBS ${BROTLI_LIBRARIES})
 656     include_directories(${BROTLI_INCLUDE_DIRS})
 657     list(APPEND CMAKE_REQUIRED_INCLUDES ${BROTLI_INCLUDE_DIRS})
 658   endif()
 659 endif()
 660
 661 option(CURL_ZSTD "Set to ON to enable building curl with zstd support." OFF)
 662 set(HAVE_ZSTD OFF)
 663 if(CURL_ZSTD)
 664   find_package(Zstd REQUIRED)
 665   cmake_push_check_state()
 666   set(CMAKE_REQUIRED_INCLUDES ${Zstd_INCLUDE_DIRS})
 667   set(CMAKE_REQUIRED_LIBRARIES ${Zstd_LIBRARIES})
 668   check_symbol_exists(ZSTD_createDStream "zstd.h" HAVE_ZSTD_CREATEDSTREAM)
 669   cmake_pop_check_state()
 670   if(Zstd_FOUND AND HAVE_ZSTD_CREATEDSTREAM)
 671     set(HAVE_ZSTD ON)
 672     list(APPEND CURL_LIBS ${Zstd_LIBRARIES})
 673     include_directories(${Zstd_INCLUDE_DIRS})
 674   endif()
 675 endif()
 676
 677 #libSSH2
 678 option(CMAKE_USE_LIBSSH2 "Use libSSH2" ON)
 679 mark_as_advanced(CMAKE_USE_LIBSSH2)
 680 set(USE_LIBSSH2 OFF)
 681 set(HAVE_LIBSSH2 OFF)
 682 set(HAVE_LIBSSH2_H OFF)
 683
 684 if(CMAKE_USE_LIBSSH2)
 685   find_package(LibSSH2)
 686   if(LIBSSH2_FOUND)
 687     list(APPEND CURL_LIBS ${LIBSSH2_LIBRARY})
 688     set(CMAKE_REQUIRED_LIBRARIES ${LIBSSH2_LIBRARY})
 689     list(APPEND CMAKE_REQUIRED_INCLUDES "${LIBSSH2_INCLUDE_DIR}")
 690     include_directories("${LIBSSH2_INCLUDE_DIR}")
 691     set(HAVE_LIBSSH2 ON)
 692     set(USE_LIBSSH2 ON)
 693
 694     # find_package has already found the headers
 695     set(HAVE_LIBSSH2_H ON)
 696     set(CURL_INCLUDES ${CURL_INCLUDES} "${LIBSSH2_INCLUDE_DIR}/libssh2.h")
 697     set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -DHAVE_LIBSSH2_H")
 698
 699     # now check for specific libssh2 symbols as they were added in different versions
 700     set(CMAKE_EXTRA_INCLUDE_FILES "libssh2.h")
 701     check_function_exists(libssh2_version           HAVE_LIBSSH2_VERSION)
 702     check_function_exists(libssh2_init              HAVE_LIBSSH2_INIT)
 703     check_function_exists(libssh2_exit              HAVE_LIBSSH2_EXIT)
 704     check_function_exists(libssh2_scp_send64        HAVE_LIBSSH2_SCP_SEND64)
 705     check_function_exists(libssh2_session_handshake HAVE_LIBSSH2_SESSION_HANDSHAKE)
 706     set(CMAKE_EXTRA_INCLUDE_FILES "")
 707     unset(CMAKE_REQUIRED_LIBRARIES)
 708   endif()
 709 endif()
 710
 711 # libssh
 712 option(CMAKE_USE_LIBSSH "Use libSSH" OFF)
 713 mark_as_advanced(CMAKE_USE_LIBSSH)
 714 if(NOT HAVE_LIBSSH2 AND CMAKE_USE_LIBSSH)
 715   find_package(libssh CONFIG)
 716   if(libssh_FOUND)
 717     message(STATUS "Found libssh ${libssh_VERSION}")
 718     # Use imported target for include and library paths.
 719     list(APPEND CURL_LIBS ssh)
 720     set(USE_LIBSSH ON)
 721     set(HAVE_LIBSSH_LIBSSH_H 1)
 722   endif()
 723 endif()
 724
 725 option(CMAKE_USE_GSSAPI "Use GSSAPI implementation (right now only Heimdal is supported with CMake build)" OFF)
 726 mark_as_advanced(CMAKE_USE_GSSAPI)
 727
 728 if(CMAKE_USE_GSSAPI)
 729   find_package(GSS)
 730
 731   set(HAVE_GSSAPI ${GSS_FOUND})
 732   if(GSS_FOUND)
 733
 734     message(STATUS "Found ${GSS_FLAVOUR} GSSAPI version: \"${GSS_VERSION}\"")
 735
 736     list(APPEND CMAKE_REQUIRED_INCLUDES ${GSS_INCLUDE_DIR})
 737     check_include_file_concat("gssapi/gssapi.h"  HAVE_GSSAPI_GSSAPI_H)
 738     check_include_file_concat("gssapi/gssapi_generic.h" HAVE_GSSAPI_GSSAPI_GENERIC_H)
 739     check_include_file_concat("gssapi/gssapi_krb5.h" HAVE_GSSAPI_GSSAPI_KRB5_H)
 740
 741     if(GSS_FLAVOUR STREQUAL "Heimdal")
 742       set(HAVE_GSSHEIMDAL ON)
 743     else() # MIT
 744       set(HAVE_GSSMIT ON)
 745       set(_INCLUDE_LIST "")
 746       if(HAVE_GSSAPI_GSSAPI_H)
 747         list(APPEND _INCLUDE_LIST "gssapi/gssapi.h")
 748       endif()
 749       if(HAVE_GSSAPI_GSSAPI_GENERIC_H)
 750         list(APPEND _INCLUDE_LIST "gssapi/gssapi_generic.h")
 751       endif()
 752       if(HAVE_GSSAPI_GSSAPI_KRB5_H)
 753         list(APPEND _INCLUDE_LIST "gssapi/gssapi_krb5.h")
 754       endif()
 755
 756       string(REPLACE ";" " " _COMPILER_FLAGS_STR "${GSS_COMPILER_FLAGS}")
 757       string(REPLACE ";" " " _LINKER_FLAGS_STR "${GSS_LINKER_FLAGS}")
 758
 759       foreach(_dir ${GSS_LINK_DIRECTORIES})
 760         set(_LINKER_FLAGS_STR "${_LINKER_FLAGS_STR} -L\"${_dir}\"")
 761       endforeach()
 762
 763       set(CMAKE_REQUIRED_FLAGS "${_COMPILER_FLAGS_STR} ${_LINKER_FLAGS_STR}")
 764       set(CMAKE_REQUIRED_LIBRARIES ${GSS_LIBRARIES})
 765       check_symbol_exists("GSS_C_NT_HOSTBASED_SERVICE" ${_INCLUDE_LIST} HAVE_GSS_C_NT_HOSTBASED_SERVICE)
 766       if(NOT HAVE_GSS_C_NT_HOSTBASED_SERVICE)
 767         set(HAVE_OLD_GSSMIT ON)
 768       endif()
 769       unset(CMAKE_REQUIRED_LIBRARIES)
 770
 771     endif()
 772
 773     include_directories(${GSS_INCLUDE_DIR})
 774     link_directories(${GSS_LINK_DIRECTORIES})
 775     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GSS_COMPILER_FLAGS}")
 776     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
 777     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
 778     list(APPEND CURL_LIBS ${GSS_LIBRARIES})
 779
 780   else()
 781     message(WARNING "GSSAPI support has been requested but no supporting libraries found. Skipping.")
 782   endif()
 783 endif()
 784
 785 option(ENABLE_UNIX_SOCKETS "Define if you want Unix domain sockets support" ON)
 786 if(ENABLE_UNIX_SOCKETS)
 787   include(CheckStructHasMember)
 788   check_struct_has_member("struct sockaddr_un" sun_path "sys/un.h" USE_UNIX_SOCKETS)
 789 else()
 790   unset(USE_UNIX_SOCKETS CACHE)
 791 endif()
 792
 793 option(ENABLE_ALT_SVC "Enable alt-svc support" OFF)
 794 set(USE_ALTSVC ${ENABLE_ALT_SVC})
 795
 796 #
 797 # CA handling
 798 #
 799 set(CURL_CA_BUNDLE "auto" CACHE STRING
 800     "Path to the CA bundle. Set 'none' to disable or 'auto' for auto-detection. Defaults to 'auto'.")
 801 set(CURL_CA_FALLBACK OFF CACHE BOOL
 802     "Set ON to use built-in CA store of TLS backend. Defaults to OFF")
 803 set(CURL_CA_PATH "auto" CACHE STRING
 804     "Location of default CA path. Set 'none' to disable or 'auto' for auto-detection. Defaults to 'auto'.")
 805
 806 if("${CURL_CA_BUNDLE}" STREQUAL "")
 807   message(FATAL_ERROR "Invalid value of CURL_CA_BUNDLE. Use 'none', 'auto' or file path.")
 808 elseif("${CURL_CA_BUNDLE}" STREQUAL "none")
 809   unset(CURL_CA_BUNDLE CACHE)
 810 elseif("${CURL_CA_BUNDLE}" STREQUAL "auto")
 811   unset(CURL_CA_BUNDLE CACHE)
 812   set(CURL_CA_BUNDLE_AUTODETECT TRUE)
 813 else()
 814   set(CURL_CA_BUNDLE_SET TRUE)
 815 endif()
 816
 817 if("${CURL_CA_PATH}" STREQUAL "")
 818   message(FATAL_ERROR "Invalid value of CURL_CA_PATH. Use 'none', 'auto' or directory path.")
 819 elseif("${CURL_CA_PATH}" STREQUAL "none")
 820   unset(CURL_CA_PATH CACHE)
 821 elseif("${CURL_CA_PATH}" STREQUAL "auto")
 822   unset(CURL_CA_PATH CACHE)
 823   if(NOT USE_NSS)
 824     set(CURL_CA_PATH_AUTODETECT TRUE)
 825   endif()
 826 else()
 827   set(CURL_CA_PATH_SET TRUE)
 828 endif()
 829
 830 if(CURL_CA_BUNDLE_SET AND CURL_CA_PATH_AUTODETECT)
 831   # Skip autodetection of unset CA path because CA bundle is set explicitly
 832 elseif(CURL_CA_PATH_SET AND CURL_CA_BUNDLE_AUTODETECT)
 833   # Skip autodetection of unset CA bundle because CA path is set explicitly
 834 elseif(CURL_CA_PATH_AUTODETECT OR CURL_CA_BUNDLE_AUTODETECT)
 835   # first try autodetecting a CA bundle, then a CA path
 836
 837   if(CURL_CA_BUNDLE_AUTODETECT)
 838     set(SEARCH_CA_BUNDLE_PATHS
 839         /etc/ssl/certs/ca-certificates.crt
 840         /etc/pki/tls/certs/ca-bundle.crt
 841         /usr/share/ssl/certs/ca-bundle.crt
 842         /usr/local/share/certs/ca-root-nss.crt
 843         /etc/ssl/cert.pem)
 844
 845     foreach(SEARCH_CA_BUNDLE_PATH ${SEARCH_CA_BUNDLE_PATHS})
 846       if(EXISTS "${SEARCH_CA_BUNDLE_PATH}")
 847         message(STATUS "Found CA bundle: ${SEARCH_CA_BUNDLE_PATH}")
 848         set(CURL_CA_BUNDLE "${SEARCH_CA_BUNDLE_PATH}")
 849         set(CURL_CA_BUNDLE_SET TRUE CACHE BOOL "Path to the CA bundle has been set")
 850         break()
 851       endif()
 852     endforeach()
 853   endif()
 854
 855   if(CURL_CA_PATH_AUTODETECT AND (NOT CURL_CA_PATH_SET))
 856     if(EXISTS "/etc/ssl/certs")
 857       set(CURL_CA_PATH "/etc/ssl/certs")
 858       set(CURL_CA_PATH_SET TRUE CACHE BOOL "Path to the CA bundle has been set")
 859     endif()
 860   endif()
 861 endif()
 862
 863 if(CURL_CA_PATH_SET AND NOT USE_OPENSSL AND NOT USE_MBEDTLS)
 864   message(STATUS
 865           "CA path only supported by OpenSSL, GnuTLS or mbed TLS. "
 866           "Set CURL_CA_PATH=none or enable one of those TLS backends.")
 867 endif()
 868
 869 # Check for header files
 870 if(NOT UNIX)
 871   check_include_file_concat("windows.h"      HAVE_WINDOWS_H)
 872   check_include_file_concat("winsock.h"      HAVE_WINSOCK_H)
 873   check_include_file_concat("ws2tcpip.h"     HAVE_WS2TCPIP_H)
 874   check_include_file_concat("winsock2.h"     HAVE_WINSOCK2_H)
 875   if(NOT CURL_WINDOWS_SSPI AND USE_OPENSSL)
 876     set(CURL_LIBS ${CURL_LIBS} "crypt32")
 877   endif()
 878 endif()
 879
 880 check_include_file_concat("stdio.h"          HAVE_STDIO_H)
 881 check_include_file_concat("inttypes.h"       HAVE_INTTYPES_H)
 882 check_include_file_concat("sys/filio.h"      HAVE_SYS_FILIO_H)
 883 check_include_file_concat("sys/ioctl.h"      HAVE_SYS_IOCTL_H)
 884 check_include_file_concat("sys/param.h"      HAVE_SYS_PARAM_H)
 885 check_include_file_concat("sys/poll.h"       HAVE_SYS_POLL_H)
 886 check_include_file_concat("sys/resource.h"   HAVE_SYS_RESOURCE_H)
 887 check_include_file_concat("sys/select.h"     HAVE_SYS_SELECT_H)
 888 check_include_file_concat("sys/socket.h"     HAVE_SYS_SOCKET_H)
 889 check_include_file_concat("sys/sockio.h"     HAVE_SYS_SOCKIO_H)
 890 check_include_file_concat("sys/stat.h"       HAVE_SYS_STAT_H)
 891 check_include_file_concat("sys/time.h"       HAVE_SYS_TIME_H)
 892 check_include_file_concat("sys/types.h"      HAVE_SYS_TYPES_H)
 893 check_include_file_concat("sys/uio.h"        HAVE_SYS_UIO_H)
 894 check_include_file_concat("sys/un.h"         HAVE_SYS_UN_H)
 895 check_include_file_concat("sys/utime.h"      HAVE_SYS_UTIME_H)
 896 check_include_file_concat("sys/xattr.h"      HAVE_SYS_XATTR_H)
 897 check_include_file_concat("alloca.h"         HAVE_ALLOCA_H)
 898 check_include_file_concat("arpa/inet.h"      HAVE_ARPA_INET_H)
 899 check_include_file_concat("arpa/tftp.h"      HAVE_ARPA_TFTP_H)
 900 check_include_file_concat("assert.h"         HAVE_ASSERT_H)
 901 check_include_file_concat("crypto.h"         HAVE_CRYPTO_H)
 902 check_include_file_concat("err.h"            HAVE_ERR_H)
 903 check_include_file_concat("errno.h"          HAVE_ERRNO_H)
 904 check_include_file_concat("fcntl.h"          HAVE_FCNTL_H)
 905 check_include_file_concat("idn2.h"           HAVE_IDN2_H)
 906 check_include_file_concat("ifaddrs.h"        HAVE_IFADDRS_H)
 907 check_include_file_concat("io.h"             HAVE_IO_H)
 908 check_include_file_concat("krb.h"            HAVE_KRB_H)
 909 check_include_file_concat("libgen.h"         HAVE_LIBGEN_H)
 910 check_include_file_concat("locale.h"         HAVE_LOCALE_H)
 911 check_include_file_concat("net/if.h"         HAVE_NET_IF_H)
 912 check_include_file_concat("netdb.h"          HAVE_NETDB_H)
 913 check_include_file_concat("netinet/in.h"     HAVE_NETINET_IN_H)
 914 check_include_file_concat("netinet/tcp.h"    HAVE_NETINET_TCP_H)
 915
 916 check_include_file_concat("pem.h"            HAVE_PEM_H)
 917 check_include_file_concat("poll.h"           HAVE_POLL_H)
 918 check_include_file_concat("pwd.h"            HAVE_PWD_H)
 919 check_include_file_concat("rsa.h"            HAVE_RSA_H)
 920 check_include_file_concat("setjmp.h"         HAVE_SETJMP_H)
 921 check_include_file_concat("sgtty.h"          HAVE_SGTTY_H)
 922 check_include_file_concat("signal.h"         HAVE_SIGNAL_H)
 923 check_include_file_concat("ssl.h"            HAVE_SSL_H)
 924 check_include_file_concat("stdbool.h"        HAVE_STDBOOL_H)
 925 check_include_file_concat("stdint.h"         HAVE_STDINT_H)
 926 check_include_file_concat("stdio.h"          HAVE_STDIO_H)
 927 check_include_file_concat("stdlib.h"         HAVE_STDLIB_H)
 928 check_include_file_concat("string.h"         HAVE_STRING_H)
 929 check_include_file_concat("strings.h"        HAVE_STRINGS_H)
 930 check_include_file_concat("stropts.h"        HAVE_STROPTS_H)
 931 check_include_file_concat("termio.h"         HAVE_TERMIO_H)
 932 check_include_file_concat("termios.h"        HAVE_TERMIOS_H)
 933 check_include_file_concat("time.h"           HAVE_TIME_H)
 934 check_include_file_concat("unistd.h"         HAVE_UNISTD_H)
 935 check_include_file_concat("utime.h"          HAVE_UTIME_H)
 936 check_include_file_concat("x509.h"           HAVE_X509_H)
 937
 938 check_include_file_concat("process.h"        HAVE_PROCESS_H)
 939 check_include_file_concat("stddef.h"         HAVE_STDDEF_H)
 940 check_include_file_concat("dlfcn.h"          HAVE_DLFCN_H)
 941 check_include_file_concat("malloc.h"         HAVE_MALLOC_H)
 942 check_include_file_concat("memory.h"         HAVE_MEMORY_H)
 943 check_include_file_concat("netinet/if_ether.h" HAVE_NETINET_IF_ETHER_H)
 944 check_include_file_concat("stdint.h"        HAVE_STDINT_H)
 945 check_include_file_concat("sockio.h"        HAVE_SOCKIO_H)
 946 check_include_file_concat("sys/utsname.h"   HAVE_SYS_UTSNAME_H)
 947
 948 check_type_size(size_t  SIZEOF_SIZE_T)
 949 check_type_size(ssize_t  SIZEOF_SSIZE_T)
 950 check_type_size("long long"  SIZEOF_LONG_LONG)
 951 check_type_size("long"  SIZEOF_LONG)
 952 check_type_size("short"  SIZEOF_SHORT)
 953 check_type_size("int"  SIZEOF_INT)
 954 check_type_size("__int64"  SIZEOF___INT64)
 955 check_type_size("long double"  SIZEOF_LONG_DOUBLE)
 956 check_type_size("time_t"  SIZEOF_TIME_T)
 957 if(NOT HAVE_SIZEOF_SSIZE_T)
 958   if(SIZEOF_LONG EQUAL SIZEOF_SIZE_T)
 959     set(ssize_t long)
 960   endif()
 961   if(NOT ssize_t AND SIZEOF___INT64 EQUAL SIZEOF_SIZE_T)
 962     set(ssize_t __int64)
 963   endif()
 964 endif()
 965 # off_t is sized later, after the HAVE_FILE_OFFSET_BITS test
 966
 967 if(HAVE_SIZEOF_LONG_LONG)
 968   set(HAVE_LONGLONG 1)
 969   set(HAVE_LL 1)
 970 endif()
 971
 972 find_file(RANDOM_FILE urandom /dev)
 973 mark_as_advanced(RANDOM_FILE)
 974
 975 # Check for some functions that are used
 976 if(HAVE_LIBWS2_32)
 977   set(CMAKE_REQUIRED_LIBRARIES ws2_32)
 978 elseif(HAVE_LIBSOCKET)
 979   set(CMAKE_REQUIRED_LIBRARIES socket)
 980 endif()
 981
 982 check_symbol_exists(basename      "${CURL_INCLUDES}" HAVE_BASENAME)
 983 check_symbol_exists(socket        "${CURL_INCLUDES}" HAVE_SOCKET)
 984 check_symbol_exists(select        "${CURL_INCLUDES}" HAVE_SELECT)
 985 check_symbol_exists(poll          "${CURL_INCLUDES}" HAVE_POLL)
 986 check_symbol_exists(strdup        "${CURL_INCLUDES}" HAVE_STRDUP)
 987 check_symbol_exists(strstr        "${CURL_INCLUDES}" HAVE_STRSTR)
 988 check_symbol_exists(strtok_r      "${CURL_INCLUDES}" HAVE_STRTOK_R)
 989 check_symbol_exists(strftime      "${CURL_INCLUDES}" HAVE_STRFTIME)
 990 check_symbol_exists(uname         "${CURL_INCLUDES}" HAVE_UNAME)
 991 check_symbol_exists(strcasecmp    "${CURL_INCLUDES}" HAVE_STRCASECMP)
 992 check_symbol_exists(stricmp       "${CURL_INCLUDES}" HAVE_STRICMP)
 993 check_symbol_exists(strcmpi       "${CURL_INCLUDES}" HAVE_STRCMPI)
 994 check_symbol_exists(strncmpi      "${CURL_INCLUDES}" HAVE_STRNCMPI)
 995 check_symbol_exists(alarm         "${CURL_INCLUDES}" HAVE_ALARM)
 996 if(NOT HAVE_STRNCMPI)
 997   set(HAVE_STRCMPI)
 998 endif()
 999 check_symbol_exists(gethostbyaddr "${CURL_INCLUDES}" HAVE_GETHOSTBYADDR)
1000 check_symbol_exists(gethostbyaddr_r "${CURL_INCLUDES}" HAVE_GETHOSTBYADDR_R)
1001 check_symbol_exists(gettimeofday  "${CURL_INCLUDES}" HAVE_GETTIMEOFDAY)
1002 check_symbol_exists(inet_addr     "${CURL_INCLUDES}" HAVE_INET_ADDR)
1003 check_symbol_exists(inet_ntoa     "${CURL_INCLUDES}" HAVE_INET_NTOA)
1004 check_symbol_exists(inet_ntoa_r   "${CURL_INCLUDES}" HAVE_INET_NTOA_R)
1005 check_symbol_exists(tcsetattr     "${CURL_INCLUDES}" HAVE_TCSETATTR)
1006 check_symbol_exists(tcgetattr     "${CURL_INCLUDES}" HAVE_TCGETATTR)
1007 check_symbol_exists(perror        "${CURL_INCLUDES}" HAVE_PERROR)
1008 check_symbol_exists(closesocket   "${CURL_INCLUDES}" HAVE_CLOSESOCKET)
1009 check_symbol_exists(setvbuf       "${CURL_INCLUDES}" HAVE_SETVBUF)
1010 check_symbol_exists(sigsetjmp     "${CURL_INCLUDES}" HAVE_SIGSETJMP)
1011 check_symbol_exists(getpass_r     "${CURL_INCLUDES}" HAVE_GETPASS_R)
1012 check_symbol_exists(strlcat       "${CURL_INCLUDES}" HAVE_STRLCAT)
1013 check_symbol_exists(getpwuid      "${CURL_INCLUDES}" HAVE_GETPWUID)
1014 check_symbol_exists(getpwuid_r    "${CURL_INCLUDES}" HAVE_GETPWUID_R)
1015 check_symbol_exists(geteuid       "${CURL_INCLUDES}" HAVE_GETEUID)
1016 check_symbol_exists(usleep        "${CURL_INCLUDES}" HAVE_USLEEP)
1017 check_symbol_exists(utime         "${CURL_INCLUDES}" HAVE_UTIME)
1018 check_symbol_exists(gmtime_r      "${CURL_INCLUDES}" HAVE_GMTIME_R)
1019 check_symbol_exists(localtime_r   "${CURL_INCLUDES}" HAVE_LOCALTIME_R)
1020
1021 check_symbol_exists(gethostbyname   "${CURL_INCLUDES}" HAVE_GETHOSTBYNAME)
1022 check_symbol_exists(gethostbyname_r "${CURL_INCLUDES}" HAVE_GETHOSTBYNAME_R)
1023
1024 check_symbol_exists(signal        "${CURL_INCLUDES}" HAVE_SIGNAL_FUNC)
1025 check_symbol_exists(SIGALRM       "${CURL_INCLUDES}" HAVE_SIGNAL_MACRO)
1026 if(HAVE_SIGNAL_FUNC AND HAVE_SIGNAL_MACRO)
1027   set(HAVE_SIGNAL 1)
1028 endif()
1029 check_symbol_exists(uname          "${CURL_INCLUDES}" HAVE_UNAME)
1030 check_symbol_exists(strtoll        "${CURL_INCLUDES}" HAVE_STRTOLL)
1031 check_symbol_exists(_strtoi64      "${CURL_INCLUDES}" HAVE__STRTOI64)
1032 check_symbol_exists(strerror_r     "${CURL_INCLUDES}" HAVE_STRERROR_R)
1033 check_symbol_exists(siginterrupt   "${CURL_INCLUDES}" HAVE_SIGINTERRUPT)
1034 check_symbol_exists(perror         "${CURL_INCLUDES}" HAVE_PERROR)
1035 check_symbol_exists(fork           "${CURL_INCLUDES}" HAVE_FORK)
1036 check_symbol_exists(getaddrinfo    "${CURL_INCLUDES}" HAVE_GETADDRINFO)
1037 check_symbol_exists(freeaddrinfo   "${CURL_INCLUDES}" HAVE_FREEADDRINFO)
1038 check_symbol_exists(freeifaddrs    "${CURL_INCLUDES}" HAVE_FREEIFADDRS)
1039 check_symbol_exists(pipe           "${CURL_INCLUDES}" HAVE_PIPE)
1040 check_symbol_exists(ftruncate      "${CURL_INCLUDES}" HAVE_FTRUNCATE)
1041 check_symbol_exists(getprotobyname "${CURL_INCLUDES}" HAVE_GETPROTOBYNAME)
1042 check_symbol_exists(getpeername    "${CURL_INCLUDES}" HAVE_GETPEERNAME)
1043 check_symbol_exists(getsockname    "${CURL_INCLUDES}" HAVE_GETSOCKNAME)
1044 check_symbol_exists(if_nametoindex "${CURL_INCLUDES}" HAVE_IF_NAMETOINDEX)
1045 check_symbol_exists(getrlimit      "${CURL_INCLUDES}" HAVE_GETRLIMIT)
1046 check_symbol_exists(setlocale      "${CURL_INCLUDES}" HAVE_SETLOCALE)
1047 check_symbol_exists(setmode        "${CURL_INCLUDES}" HAVE_SETMODE)
1048 check_symbol_exists(setrlimit      "${CURL_INCLUDES}" HAVE_SETRLIMIT)
1049 check_symbol_exists(fcntl          "${CURL_INCLUDES}" HAVE_FCNTL)
1050 check_symbol_exists(ioctl          "${CURL_INCLUDES}" HAVE_IOCTL)
1051 check_symbol_exists(setsockopt     "${CURL_INCLUDES}" HAVE_SETSOCKOPT)
1052 check_function_exists(mach_absolute_time HAVE_MACH_ABSOLUTE_TIME)
1053 check_symbol_exists(inet_pton      "${CURL_INCLUDES}" HAVE_INET_PTON)
1054
1055 check_symbol_exists(fsetxattr "${CURL_INCLUDES}" HAVE_FSETXATTR)
1056 if(HAVE_FSETXATTR)
1057   foreach(CURL_TEST HAVE_FSETXATTR_5 HAVE_FSETXATTR_6)
1058     curl_internal_test(${CURL_TEST})
1059   endforeach()
1060 endif()
1061
1062 # sigaction and sigsetjmp are special. Use special mechanism for
1063 # detecting those, but only if previous attempt failed.
1064 if(HAVE_SIGNAL_H)
1065   check_symbol_exists(sigaction "signal.h" HAVE_SIGACTION)
1066 endif()
1067
1068 if(NOT HAVE_SIGSETJMP)
1069   if(HAVE_SETJMP_H)
1070     check_symbol_exists(sigsetjmp "setjmp.h" HAVE_MACRO_SIGSETJMP)
1071     if(HAVE_MACRO_SIGSETJMP)
1072       set(HAVE_SIGSETJMP 1)
1073     endif()
1074   endif()
1075 endif()
1076
1077 # If there is no stricmp(), do not allow LDAP to parse URLs
1078 if(NOT HAVE_STRICMP)
1079   set(HAVE_LDAP_URL_PARSE 1)
1080 endif()
1081
1082 # Do curl specific tests
1083 foreach(CURL_TEST
1084     HAVE_FCNTL_O_NONBLOCK
1085     HAVE_IOCTLSOCKET
1086     HAVE_IOCTLSOCKET_CAMEL
1087     HAVE_IOCTLSOCKET_CAMEL_FIONBIO
1088     HAVE_IOCTLSOCKET_FIONBIO
1089     HAVE_IOCTL_FIONBIO
1090     HAVE_IOCTL_SIOCGIFADDR
1091     HAVE_SETSOCKOPT_SO_NONBLOCK
1092     HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
1093     TIME_WITH_SYS_TIME
1094     HAVE_O_NONBLOCK
1095     HAVE_GETHOSTBYADDR_R_5
1096     HAVE_GETHOSTBYADDR_R_7
1097     HAVE_GETHOSTBYADDR_R_8
1098     HAVE_GETHOSTBYADDR_R_5_REENTRANT
1099     HAVE_GETHOSTBYADDR_R_7_REENTRANT
1100     HAVE_GETHOSTBYADDR_R_8_REENTRANT
1101     HAVE_GETHOSTBYNAME_R_3
1102     HAVE_GETHOSTBYNAME_R_5
1103     HAVE_GETHOSTBYNAME_R_6
1104     HAVE_GETHOSTBYNAME_R_3_REENTRANT
1105     HAVE_GETHOSTBYNAME_R_5_REENTRANT
1106     HAVE_GETHOSTBYNAME_R_6_REENTRANT
1107     HAVE_IN_ADDR_T
1108     HAVE_BOOL_T
1109     STDC_HEADERS
1110     RETSIGTYPE_TEST
1111     HAVE_INET_NTOA_R_DECL
1112     HAVE_INET_NTOA_R_DECL_REENTRANT
1113     HAVE_GETADDRINFO
1114     HAVE_FILE_OFFSET_BITS
1115     HAVE_VARIADIC_MACROS_C99
1116     HAVE_VARIADIC_MACROS_GCC
1117     )
1118   curl_internal_test(${CURL_TEST})
1119 endforeach()
1120
1121 if(HAVE_FILE_OFFSET_BITS)
1122   set(_FILE_OFFSET_BITS 64)
1123   set(CMAKE_REQUIRED_FLAGS "-D_FILE_OFFSET_BITS=64")
1124 endif()
1125 check_type_size("off_t"  SIZEOF_OFF_T)
1126
1127 # include this header to get the type
1128 set(CMAKE_REQUIRED_INCLUDES "${CURL_SOURCE_DIR}/include")
1129 set(CMAKE_EXTRA_INCLUDE_FILES "curl/system.h")
1130 check_type_size("curl_off_t"  SIZEOF_CURL_OFF_T)
1131 set(CMAKE_EXTRA_INCLUDE_FILES "")
1132
1133 set(CMAKE_REQUIRED_FLAGS)
1134
1135 foreach(CURL_TEST
1136     HAVE_GLIBC_STRERROR_R
1137     HAVE_POSIX_STRERROR_R
1138     )
1139   curl_internal_test(${CURL_TEST})
1140 endforeach()
1141
1142 # Check for reentrant
1143 foreach(CURL_TEST
1144     HAVE_GETHOSTBYADDR_R_5
1145     HAVE_GETHOSTBYADDR_R_7
1146     HAVE_GETHOSTBYADDR_R_8
1147     HAVE_GETHOSTBYNAME_R_3
1148     HAVE_GETHOSTBYNAME_R_5
1149     HAVE_GETHOSTBYNAME_R_6
1150     HAVE_INET_NTOA_R_DECL_REENTRANT)
1151   if(NOT ${CURL_TEST})
1152     if(${CURL_TEST}_REENTRANT)
1153       set(NEED_REENTRANT 1)
1154     endif()
1155   endif()
1156 endforeach()
1157
1158 if(NEED_REENTRANT)
1159   foreach(CURL_TEST
1160       HAVE_GETHOSTBYADDR_R_5
1161       HAVE_GETHOSTBYADDR_R_7
1162       HAVE_GETHOSTBYADDR_R_8
1163       HAVE_GETHOSTBYNAME_R_3
1164       HAVE_GETHOSTBYNAME_R_5
1165       HAVE_GETHOSTBYNAME_R_6)
1166     set(${CURL_TEST} 0)
1167     if(${CURL_TEST}_REENTRANT)
1168       set(${CURL_TEST} 1)
1169     endif()
1170   endforeach()
1171 endif()
1172
1173 if(HAVE_INET_NTOA_R_DECL_REENTRANT)
1174   set(HAVE_INET_NTOA_R_DECL 1)
1175   set(NEED_REENTRANT 1)
1176 endif()
1177
1178 # Check clock_gettime(CLOCK_MONOTONIC, x) support
1179 curl_internal_test(HAVE_CLOCK_GETTIME_MONOTONIC)
1180
1181 # Check compiler support of __builtin_available()
1182 curl_internal_test(HAVE_BUILTIN_AVAILABLE)
1183
1184 # Some other minor tests
1185
1186 if(NOT HAVE_IN_ADDR_T)
1187   set(in_addr_t "unsigned long")
1188 endif()
1189
1190 # Fix libz / zlib.h
1191
1192 if(NOT CURL_SPECIAL_LIBZ)
1193   if(NOT HAVE_LIBZ)
1194     set(HAVE_ZLIB_H 0)
1195   endif()
1196
1197   if(NOT HAVE_ZLIB_H)
1198     set(HAVE_LIBZ 0)
1199   endif()
1200 endif()
1201
1202 # Check for nonblocking
1203 set(HAVE_DISABLED_NONBLOCKING 1)
1204 if(HAVE_FIONBIO OR
1205     HAVE_IOCTLSOCKET OR
1206     HAVE_IOCTLSOCKET_CASE OR
1207     HAVE_O_NONBLOCK)
1208   set(HAVE_DISABLED_NONBLOCKING)
1209 endif()
1210
1211 if(RETSIGTYPE_TEST)
1212   set(RETSIGTYPE void)
1213 else()
1214   set(RETSIGTYPE int)
1215 endif()
1216
1217 if(CMAKE_COMPILER_IS_GNUCC AND APPLE)
1218   include(CheckCCompilerFlag)
1219   check_c_compiler_flag(-Wno-long-double HAVE_C_FLAG_Wno_long_double)
1220   if(HAVE_C_FLAG_Wno_long_double)
1221     # The Mac version of GCC warns about use of long double.  Disable it.
1222     get_source_file_property(MPRINTF_COMPILE_FLAGS mprintf.c COMPILE_FLAGS)
1223     if(MPRINTF_COMPILE_FLAGS)
1224       set(MPRINTF_COMPILE_FLAGS "${MPRINTF_COMPILE_FLAGS} -Wno-long-double")
1225     else()
1226       set(MPRINTF_COMPILE_FLAGS "-Wno-long-double")
1227     endif()
1228     set_source_files_properties(mprintf.c PROPERTIES
1229       COMPILE_FLAGS ${MPRINTF_COMPILE_FLAGS})
1230   endif()
1231 endif()
1232
1233 # TODO test which of these headers are required
1234 if(WIN32)
1235   set(CURL_PULL_WS2TCPIP_H ${HAVE_WS2TCPIP_H})
1236 else()
1237   set(CURL_PULL_SYS_TYPES_H ${HAVE_SYS_TYPES_H})
1238   set(CURL_PULL_SYS_SOCKET_H ${HAVE_SYS_SOCKET_H})
1239   set(CURL_PULL_SYS_POLL_H ${HAVE_SYS_POLL_H})
1240 endif()
1241 set(CURL_PULL_STDINT_H ${HAVE_STDINT_H})
1242 set(CURL_PULL_INTTYPES_H ${HAVE_INTTYPES_H})
1243
1244 include(CMake/OtherTests.cmake)
1245
1246 add_definitions(-DHAVE_CONFIG_H)
1247
1248 # For Windows, all compilers used by CMake should support large files
1249 if(WIN32)
1250   set(USE_WIN32_LARGE_FILES ON)
1251
1252   # Use the manifest embedded in the Windows Resource
1253   set(CMAKE_RC_FLAGS "${CMAKE_RC_FLAGS} -DCURL_EMBED_MANIFEST")
1254 endif()
1255
1256 if(MSVC)
1257   # Disable default manifest added by CMake
1258   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /MANIFEST:NO")
1259
1260   add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
1261   if(CMAKE_C_FLAGS MATCHES "/W[0-4]")
1262     string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
1263   else()
1264     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
1265   endif()
1266 endif()
1267
1268 if(CURL_WERROR)
1269   if(MSVC_VERSION)
1270     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /WX")
1271   else()
1272     # this assumes clang or gcc style options
1273     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
1274   endif()
1275 endif()
1276
1277 if(CURL_LTO)
1278   if(CMAKE_VERSION VERSION_LESS 3.9)
1279     message(FATAL_ERROR "Requested LTO but your cmake version ${CMAKE_VERSION} is to old. You need at least 3.9")
1280   endif()
1281
1282   cmake_policy(SET CMP0069 NEW)
1283
1284   include(CheckIPOSupported)
1285   check_ipo_supported(RESULT CURL_HAS_LTO OUTPUT CURL_LTO_ERROR LANGUAGES C)
1286   if(CURL_HAS_LTO)
1287     message(STATUS "LTO supported and enabled")
1288   else()
1289     message(FATAL_ERROR "LTO was requested - but compiler doesn't support it\n${CURL_LTO_ERROR}")
1290   endif()
1291 endif()
1292
1293
1294 # Ugly (but functional) way to include "Makefile.inc" by transforming it (= regenerate it).
1295 function(transform_makefile_inc INPUT_FILE OUTPUT_FILE)
1296   file(READ ${INPUT_FILE} MAKEFILE_INC_TEXT)
1297   string(REPLACE "$(top_srcdir)"   "\${CURL_SOURCE_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
1298   string(REPLACE "$(top_builddir)" "\${CURL_BINARY_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
1299
1300   string(REGEX REPLACE "\\\\\n" "!π!α!" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
1301   string(REGEX REPLACE "([a-zA-Z_][a-zA-Z0-9_]*)[\t ]*=[\t ]*([^\n]*)" "SET(\\1 \\2)" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
1302   string(REPLACE "!π!α!" "\n" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
1303
1304   string(REGEX REPLACE "\\$\\(([a-zA-Z_][a-zA-Z0-9_]*)\\)" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})    # Replace $() with ${}
1305   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.
1306   file(WRITE ${OUTPUT_FILE} ${MAKEFILE_INC_TEXT})
1307   set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${INPUT_FILE}")
1308 endfunction()
1309
1310 include(GNUInstallDirs)
1311
1312 set(CURL_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
1313 set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
1314 set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
1315 set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
1316 set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
1317
1318 if(USE_MANUAL)
1319   add_subdirectory(docs)
1320 endif()
1321
1322 add_subdirectory(lib)
1323
1324 if(BUILD_CURL_EXE)
1325   add_subdirectory(src)
1326 endif()
1327
1328 option(BUILD_TESTING "Build tests" "${PERL_FOUND}")
1329 if(NOT PERL_FOUND)
1330   message(STATUS "Perl not found, testing disabled.")
1331 elseif(BUILD_TESTING)
1332   add_subdirectory(tests)
1333 endif()
1334
1335 # NTLM support requires crypto function adaptions from various SSL libs
1336 # TODO alternative SSL libs tests for SSP1, GNUTLS, NSS
1337 if(NOT CURL_DISABLE_CRYPTO_AUTH AND (USE_OPENSSL OR USE_DARWINSSL OR USE_MBEDTLS OR USE_WIN32_CRYPTO))
1338   set(use_ntlm ON)
1339 else()
1340   set(use_ntlm OFF)
1341 endif()
1342
1343 # Helper to populate a list (_items) with a label when conditions (the remaining
1344 # args) are satisfied
1345 macro(_add_if label)
1346   # needs to be a macro to allow this indirection
1347   if(${ARGN})
1348     set(_items ${_items} "${label}")
1349   endif()
1350 endmacro()
1351
1352 # Clear list and try to detect available features
1353 set(_items)
1354 _add_if("SSL"           SSL_ENABLED)
1355 _add_if("IPv6"          ENABLE_IPV6)
1356 _add_if("unix-sockets"  USE_UNIX_SOCKETS)
1357 _add_if("libz"          HAVE_LIBZ)
1358 _add_if("brotli"        HAVE_BROTLI)
1359 _add_if("zstd"          HAVE_ZSTD)
1360 _add_if("AsynchDNS"     USE_ARES OR USE_THREADS_POSIX OR USE_THREADS_WIN32)
1361 _add_if("IDN"           HAVE_LIBIDN2)
1362 _add_if("Largefile"     (CURL_SIZEOF_CURL_OFF_T GREATER 4) AND
1363                         ((SIZEOF_OFF_T GREATER 4) OR USE_WIN32_LARGE_FILES))
1364 # TODO SSP1 (Schannel) check is missing
1365 _add_if("SSPI"          USE_WINDOWS_SSPI)
1366 _add_if("GSS-API"       HAVE_GSSAPI)
1367 _add_if("alt-svc"       ENABLE_ALT_SVC)
1368 # TODO SSP1 missing for SPNEGO
1369 _add_if("SPNEGO"        NOT CURL_DISABLE_CRYPTO_AUTH AND
1370                         (HAVE_GSSAPI OR USE_WINDOWS_SSPI))
1371 _add_if("Kerberos"      NOT CURL_DISABLE_CRYPTO_AUTH AND
1372                         (HAVE_GSSAPI OR USE_WINDOWS_SSPI))
1373 # NTLM support requires crypto function adaptions from various SSL libs
1374 # TODO alternative SSL libs tests for SSP1, GNUTLS, NSS
1375 _add_if("NTLM"        use_ntlm OR USE_WINDOWS_SSPI)
1376 # TODO missing option (autoconf: --enable-ntlm-wb)
1377 _add_if("NTLM_WB"     use_ntlm AND NOT CURL_DISABLE_HTTP AND NTLM_WB_ENABLED)
1378 # TODO missing option (--enable-tls-srp), depends on GNUTLS_SRP/OPENSSL_SRP
1379 _add_if("TLS-SRP"       USE_TLS_SRP)
1380 # TODO option --with-nghttp2 tests for nghttp2 lib and nghttp2/nghttp2.h header
1381 _add_if("HTTP2"         USE_NGHTTP2)
1382 _add_if("HTTP3"         USE_NGTCP2 OR USE_QUICHE)
1383 _add_if("MultiSSL"      CURL_WITH_MULTI_SSL)
1384 _add_if("HTTPS-proxy"   SSL_ENABLED AND (USE_OPENSSL OR USE_GNUTLS OR USE_NSS))
1385 string(REPLACE ";" " " SUPPORT_FEATURES "${_items}")
1386 message(STATUS "Enabled features: ${SUPPORT_FEATURES}")
1387
1388 # Clear list and try to detect available protocols
1389 set(_items)
1390 _add_if("HTTP"          NOT CURL_DISABLE_HTTP)
1391 _add_if("HTTPS"         NOT CURL_DISABLE_HTTP AND SSL_ENABLED)
1392 _add_if("FTP"           NOT CURL_DISABLE_FTP)
1393 _add_if("FTPS"          NOT CURL_DISABLE_FTP AND SSL_ENABLED)
1394 _add_if("FILE"          NOT CURL_DISABLE_FILE)
1395 _add_if("TELNET"        NOT CURL_DISABLE_TELNET)
1396 _add_if("LDAP"          NOT CURL_DISABLE_LDAP)
1397 # CURL_DISABLE_LDAP implies CURL_DISABLE_LDAPS
1398 # TODO check HAVE_LDAP_SSL (in autoconf this is enabled with --enable-ldaps)
1399 _add_if("LDAPS"         NOT CURL_DISABLE_LDAPS AND
1400                         ((USE_OPENLDAP AND SSL_ENABLED) OR
1401                         (NOT USE_OPENLDAP AND HAVE_LDAP_SSL)))
1402 _add_if("DICT"          NOT CURL_DISABLE_DICT)
1403 _add_if("TFTP"          NOT CURL_DISABLE_TFTP)
1404 _add_if("GOPHER"        NOT CURL_DISABLE_GOPHER)
1405 _add_if("POP3"          NOT CURL_DISABLE_POP3)
1406 _add_if("POP3S"         NOT CURL_DISABLE_POP3 AND SSL_ENABLED)
1407 _add_if("IMAP"          NOT CURL_DISABLE_IMAP)
1408 _add_if("IMAPS"         NOT CURL_DISABLE_IMAP AND SSL_ENABLED)
1409 _add_if("SMB"           NOT CURL_DISABLE_SMB AND use_ntlm)
1410 _add_if("SMBS"          NOT CURL_DISABLE_SMB AND SSL_ENABLED AND use_ntlm)
1411 _add_if("SMTP"          NOT CURL_DISABLE_SMTP)
1412 _add_if("SMTPS"         NOT CURL_DISABLE_SMTP AND SSL_ENABLED)
1413 _add_if("SCP"           USE_LIBSSH2 OR USE_LIBSSH)
1414 _add_if("SFTP"          USE_LIBSSH2 OR USE_LIBSSH)
1415 _add_if("RTSP"          NOT CURL_DISABLE_RTSP)
1416 _add_if("RTMP"          USE_LIBRTMP)
1417 _add_if("MQTT"          NOT CURL_DISABLE_MQTT)
1418 if(_items)
1419   list(SORT _items)
1420 endif()
1421 string(REPLACE ";" " " SUPPORT_PROTOCOLS "${_items}")
1422 message(STATUS "Enabled protocols: ${SUPPORT_PROTOCOLS}")
1423
1424 # Clear list and collect SSL backends
1425 set(_items)
1426 _add_if("Schannel"         SSL_ENABLED AND USE_WINDOWS_SSPI)
1427 _add_if("OpenSSL"          SSL_ENABLED AND USE_OPENSSL)
1428 _add_if("Secure Transport" SSL_ENABLED AND USE_SECTRANSP)
1429 _add_if("mbedTLS"          SSL_ENABLED AND USE_MBEDTLS)
1430 _add_if("BearSSL"          SSL_ENABLED AND USE_BEARSSL)
1431 _add_if("NSS"              SSL_ENABLED AND USE_NSS)
1432 _add_if("wolfSSL"          SSL_ENABLED AND USE_WOLFSSL)
1433 if(_items)
1434   list(SORT _items)
1435 endif()
1436 string(REPLACE ";" " " SSL_BACKENDS "${_items}")
1437 message(STATUS "Enabled SSL backends: ${SSL_BACKENDS}")
1438
1439 # curl-config needs the following options to be set.
1440 set(CC                      "${CMAKE_C_COMPILER}")
1441 # TODO probably put a -D... options here?
1442 set(CONFIGURE_OPTIONS       "")
1443 # TODO when to set "-DCURL_STATICLIB" for CPPFLAG_CURL_STATICLIB?
1444 set(CPPFLAG_CURL_STATICLIB  "")
1445 set(CURLVERSION             "${CURL_VERSION}")
1446 set(exec_prefix             "\${prefix}")
1447 set(includedir              "\${prefix}/include")
1448 set(LDFLAGS                 "${CMAKE_SHARED_LINKER_FLAGS}")
1449 set(LIBCURL_LIBS            "")
1450 set(libdir                  "${CMAKE_INSTALL_PREFIX}/lib")
1451 foreach(_lib ${CMAKE_C_IMPLICIT_LINK_LIBRARIES} ${CURL_LIBS})
1452   if(TARGET "${_lib}")
1453     set(_libname "${_lib}")
1454     get_target_property(_libtype "${_libname}" TYPE)
1455     if(_libtype STREQUAL INTERFACE_LIBRARY)
1456       # Interface libraries can occur when an external project embeds curl and
1457       # defined targets such as ZLIB::ZLIB by themselves. Ignore these as
1458       # reading the LOCATION property will error out. Assume the user won't need
1459       # this information in the .pc file.
1460       continue()
1461     endif()
1462     get_target_property(_lib "${_libname}" LOCATION)
1463     if(NOT _lib)
1464       message(WARNING "Bad lib in library list: ${_libname}")
1465       continue()
1466     endif()
1467   endif()
1468   if(_lib MATCHES ".*/.*" OR _lib MATCHES "^-")
1469     set(LIBCURL_LIBS          "${LIBCURL_LIBS} ${_lib}")
1470   else()
1471     set(LIBCURL_LIBS          "${LIBCURL_LIBS} -l${_lib}")
1472   endif()
1473 endforeach()
1474 if(BUILD_SHARED_LIBS)
1475   set(ENABLE_SHARED         "yes")
1476   set(ENABLE_STATIC         "no")
1477   set(LIBCURL_NO_SHARED     "")
1478 else()
1479   set(ENABLE_SHARED         "no")
1480   set(ENABLE_STATIC         "yes")
1481   set(LIBCURL_NO_SHARED     "${LIBCURL_LIBS}")
1482 endif()
1483 # "a" (Linux) or "lib" (Windows)
1484 string(REPLACE "." "" libext "${CMAKE_STATIC_LIBRARY_SUFFIX}")
1485 set(prefix                  "${CMAKE_INSTALL_PREFIX}")
1486 # Set this to "yes" to append all libraries on which -lcurl is dependent
1487 set(REQUIRE_LIB_DEPS        "no")
1488 # SUPPORT_FEATURES
1489 # SUPPORT_PROTOCOLS
1490 set(VERSIONNUM              "${CURL_VERSION_NUM}")
1491
1492 # Finally generate a "curl-config" matching this config
1493 # Use:
1494 # * ENABLE_SHARED
1495 # * ENABLE_STATIC
1496 configure_file("${CURL_SOURCE_DIR}/curl-config.in"
1497                "${CURL_BINARY_DIR}/curl-config" @ONLY)
1498 install(FILES "${CURL_BINARY_DIR}/curl-config"
1499         DESTINATION ${CMAKE_INSTALL_BINDIR}
1500         PERMISSIONS
1501           OWNER_READ OWNER_WRITE OWNER_EXECUTE
1502           GROUP_READ GROUP_EXECUTE
1503           WORLD_READ WORLD_EXECUTE)
1504
1505 # Finally generate a pkg-config file matching this config
1506 configure_file("${CURL_SOURCE_DIR}/libcurl.pc.in"
1507                "${CURL_BINARY_DIR}/libcurl.pc" @ONLY)
1508 install(FILES "${CURL_BINARY_DIR}/libcurl.pc"
1509         DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
1510
1511 # install headers
1512 install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/curl"
1513     DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
1514     FILES_MATCHING PATTERN "*.h")
1515
1516 include(CMakePackageConfigHelpers)
1517 write_basic_package_version_file(
1518     "${version_config}"
1519     VERSION ${CURL_VERSION}
1520     COMPATIBILITY SameMajorVersion
1521 )
1522
1523 # Use:
1524 # * TARGETS_EXPORT_NAME
1525 # * PROJECT_NAME
1526 configure_package_config_file(CMake/curl-config.cmake.in
1527         "${project_config}"
1528         INSTALL_DESTINATION ${CURL_INSTALL_CMAKE_DIR}
1529 )
1530
1531 install(
1532         EXPORT "${TARGETS_EXPORT_NAME}"
1533         NAMESPACE "${PROJECT_NAME}::"
1534         DESTINATION ${CURL_INSTALL_CMAKE_DIR}
1535 )
1536
1537 install(
1538         FILES ${version_config} ${project_config}
1539         DESTINATION ${CURL_INSTALL_CMAKE_DIR}
1540 )
1541
1542 # Workaround for MSVS10 to avoid the Dialog Hell
1543 # FIXME: This could be removed with future version of CMake.
1544 if(MSVC_VERSION EQUAL 1600)
1545   set(CURL_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/CURL.sln")
1546   if(EXISTS "${CURL_SLN_FILENAME}")
1547     file(APPEND "${CURL_SLN_FILENAME}" "\n# This should be regenerated!\n")
1548   endif()
1549 endif()
1550
1551 if(NOT TARGET uninstall)
1552   configure_file(
1553       ${CMAKE_CURRENT_SOURCE_DIR}/CMake/cmake_uninstall.cmake.in
1554       ${CMAKE_CURRENT_BINARY_DIR}/CMake/cmake_uninstall.cmake
1555       IMMEDIATE @ONLY)
1556
1557   add_custom_target(uninstall
1558       COMMAND ${CMAKE_COMMAND} -P
1559       ${CMAKE_CURRENT_BINARY_DIR}/CMake/cmake_uninstall.cmake)
1560 endif()