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CMakeLists.txt
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#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# curl/libcurl CMake script
# by Tetetest and Sukender (Benoit Neil)
# TODO:
# The output .so file lacks the soname number which we currently have within the lib/Makefile.am file
# Add full (4 or 5 libs) SSL support
# 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).
# Check on all possible platforms
# Test with as many configurations possible (With or without any option)
# Create scripts that help keeping the CMake build system up to date (to reduce maintenance). According to Tetetest:
# - lists of headers that 'configure' checks for;
# - curl-specific tests (the ones that are in m4/curl-*.m4 files);
# - (most obvious thing:) curl version numbers.
# Add documentation subproject
#
# To check:
# (From Daniel Stenberg) The cmake build selected to run gcc with -fPIC on my box while the plain configure script did not.
# (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.
# Note: By default this CMake build script detects the version of some
# dependencies using `check_symbol_exists`. Those checks do not work
# in the case that both CURL and its dependency are included as
# sub-projects in a larger build using `FetchContent`. To support
# that case, additional variables may be defined by the parent
# project, ideally in the "extra" find package redirect file:
# https://cmake.org/cmake/help/latest/module/FetchContent.html#integrating-with-find-package
#
# The following variables are available:
# HAVE_RAND_EGD: `RAND_egd` present in OpenSSL
# HAVE_BORINGSSL: OpenSSL is BoringSSL
# HAVE_PK11_CREATEMANAGEDGENERICOBJECTL: `PK11_CreateManagedGenericObject` present in NSS
# HAVE_SSL_CTX_SET_QUIC_METHOD: `SSL_CTX_set_quic_method` present in OpenSSL/wolfSSL
# HAVE_QUICHE_CONN_SET_QLOG_FD: `quiche_conn_set_qlog_fd` present in QUICHE
# HAVE_ZSTD_CREATEDSTREAM: `ZSTD_createDStream` present in Zstd
#
# For each of the above variables, if the variable is DEFINED (either
# to ON or OFF), the symbol detection will be skipped. If the
# variable is NOT DEFINED, the symbol detection will be performed.
cmake_minimum_required(VERSION 3.7...3.16 FATAL_ERROR)
set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")
include(Utilities)
include(Macros)
include(CMakeDependentOption)
include(CheckCCompilerFlag)
project(CURL C)
file(STRINGS ${CURL_SOURCE_DIR}/include/curl/curlver.h CURL_VERSION_H_CONTENTS REGEX "#define LIBCURL_VERSION( |_NUM )")
string(REGEX MATCH "#define LIBCURL_VERSION \"[^\"]*"
CURL_VERSION ${CURL_VERSION_H_CONTENTS})
string(REGEX REPLACE "[^\"]+\"" "" CURL_VERSION ${CURL_VERSION})
string(REGEX MATCH "#define LIBCURL_VERSION_NUM 0x[0-9a-fA-F]+"
CURL_VERSION_NUM ${CURL_VERSION_H_CONTENTS})
string(REGEX REPLACE "[^0]+0x" "" CURL_VERSION_NUM ${CURL_VERSION_NUM})
# Setup package meta-data
# SET(PACKAGE "curl")
message(STATUS "curl version=[${CURL_VERSION}]")
# SET(PACKAGE_TARNAME "curl")
# SET(PACKAGE_NAME "curl")
# SET(PACKAGE_VERSION "-")
# SET(PACKAGE_STRING "curl-")
# SET(PACKAGE_BUGREPORT "a suitable curl mailing list => https://curl.se/mail/")
set(OPERATING_SYSTEM "${CMAKE_SYSTEM_NAME}")
if(CMAKE_C_COMPILER_TARGET)
set(OS "\"${CMAKE_C_COMPILER_TARGET}\"")
else()
set(OS "\"${CMAKE_SYSTEM_NAME}\"")
endif()
include_directories(${CURL_SOURCE_DIR}/include)
option(CURL_WERROR "Turn compiler warnings into errors" OFF)
option(PICKY_COMPILER "Enable picky compiler options" ON)
option(BUILD_CURL_EXE "Set to ON to build curl executable." ON)
option(BUILD_SHARED_LIBS "Build shared libraries" ON)
option(ENABLE_ARES "Set to ON to enable c-ares support" OFF)
if(WIN32)
option(CURL_STATIC_CRT "Set to ON to build libcurl with static CRT on Windows (/MT)." OFF)
option(ENABLE_UNICODE "Set to ON to use the Unicode version of the Windows API functions" OFF)
set(CURL_TARGET_WINDOWS_VERSION "" CACHE STRING "Minimum target Windows version as hex string")
if(CURL_TARGET_WINDOWS_VERSION)
add_definitions(-D_WIN32_WINNT=${CURL_TARGET_WINDOWS_VERSION})
list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_WIN32_WINNT=${CURL_TARGET_WINDOWS_VERSION})
set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -D_WIN32_WINNT=${CURL_TARGET_WINDOWS_VERSION}")
endif()
if(ENABLE_UNICODE)
add_definitions(-DUNICODE -D_UNICODE)
if(MINGW)
add_compile_options(-municode)
endif()
endif()
endif()
option(CURL_LTO "Turn on compiler Link Time Optimizations" OFF)
cmake_dependent_option(ENABLE_THREADED_RESOLVER "Set to ON to enable threaded DNS lookup"
ON "NOT ENABLE_ARES"
OFF)
option(ENABLE_DEBUG "Set to ON to enable curl debug features" OFF)
option(ENABLE_CURLDEBUG "Set to ON to build with TrackMemory feature enabled" OFF)
if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
if(PICKY_COMPILER)
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 -Wenum-conversion -Warith-conversion)
# surprisingly, CHECK_C_COMPILER_FLAG needs a new variable to store each new
# test result in.
string(MAKE_C_IDENTIFIER "OPT${_CCOPT}" _optvarname)
check_c_compiler_flag(${_CCOPT} ${_optvarname})
if(${_optvarname})
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_CCOPT}")
endif()
endforeach()
foreach(_CCOPT long-long multichar format-nonliteral sign-conversion system-headers pedantic-ms-format)
# GCC only warns about unknown -Wno- options if there are also other diagnostic messages,
# so test for the positive form instead
string(MAKE_C_IDENTIFIER "OPT${_CCOPT}" _optvarname)
check_c_compiler_flag("-W${_CCOPT}" ${_optvarname})
if(${_optvarname})
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-${_CCOPT}")
endif()
endforeach()
endif()
endif()
if(ENABLE_DEBUG)
# DEBUGBUILD will be defined only for Debug builds
set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:Debug>:DEBUGBUILD>)
set(ENABLE_CURLDEBUG ON)
endif()
if(ENABLE_CURLDEBUG)
set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS CURLDEBUG)
endif()
# For debug libs and exes, add "-d" postfix
if(NOT DEFINED CMAKE_DEBUG_POSTFIX)
set(CMAKE_DEBUG_POSTFIX "-d")
endif()
# initialize CURL_LIBS
set(CURL_LIBS "")
if(ENABLE_ARES)
set(USE_ARES 1)
find_package(CARES REQUIRED)
list(APPEND CURL_LIBS ${CARES_LIBRARY})
endif()
include(CurlSymbolHiding)
option(CURL_ENABLE_EXPORT_TARGET "to enable cmake export target" ON)
mark_as_advanced(CURL_ENABLE_EXPORT_TARGET)
option(CURL_DISABLE_ALTSVC "disables alt-svc support" OFF)
mark_as_advanced(CURL_DISABLE_ALTSVC)
option(CURL_DISABLE_COOKIES "disables cookies support" OFF)
mark_as_advanced(CURL_DISABLE_COOKIES)
option(CURL_DISABLE_CRYPTO_AUTH "disables cryptographic authentication" OFF)
mark_as_advanced(CURL_DISABLE_CRYPTO_AUTH)
option(CURL_DISABLE_DICT "disables DICT" OFF)
mark_as_advanced(CURL_DISABLE_DICT)
option(CURL_DISABLE_DOH "disables DNS-over-HTTPS" OFF)
mark_as_advanced(CURL_DISABLE_DOH)
option(CURL_DISABLE_FILE "disables FILE" OFF)
mark_as_advanced(CURL_DISABLE_FILE)
option(CURL_DISABLE_FTP "disables FTP" OFF)
mark_as_advanced(CURL_DISABLE_FTP)
option(CURL_DISABLE_GETOPTIONS "disables curl_easy_options API for existing options to curl_easy_setopt" OFF)
mark_as_advanced(CURL_DISABLE_GETOPTIONS)
option(CURL_DISABLE_GOPHER "disables Gopher" OFF)
mark_as_advanced(CURL_DISABLE_GOPHER)
option(CURL_DISABLE_HSTS "disables HSTS support" OFF)
mark_as_advanced(CURL_DISABLE_HSTS)
option(CURL_DISABLE_HTTP "disables HTTP" OFF)
mark_as_advanced(CURL_DISABLE_HTTP)
option(CURL_DISABLE_HTTP_AUTH "disables all HTTP authentication methods" OFF)
mark_as_advanced(CURL_DISABLE_HTTP_AUTH)
option(CURL_DISABLE_IMAP "disables IMAP" OFF)
mark_as_advanced(CURL_DISABLE_IMAP)
option(CURL_DISABLE_LDAP "disables LDAP" OFF)
mark_as_advanced(CURL_DISABLE_LDAP)
option(CURL_DISABLE_LDAPS "disables LDAPS" OFF)
mark_as_advanced(CURL_DISABLE_LDAPS)
option(CURL_DISABLE_LIBCURL_OPTION "disables --libcurl option from the curl tool" OFF)
mark_as_advanced(CURL_DISABLE_LIBCURL_OPTION)
option(CURL_DISABLE_MIME "disables MIME support" OFF)
mark_as_advanced(CURL_DISABLE_MIME)
option(CURL_DISABLE_MQTT "disables MQTT" OFF)
mark_as_advanced(CURL_DISABLE_MQTT)
option(CURL_DISABLE_NETRC "disables netrc parser" OFF)
mark_as_advanced(CURL_DISABLE_NETRC)
option(CURL_DISABLE_NTLM "disables NTLM support" OFF)
mark_as_advanced(CURL_DISABLE_NTLM)
option(CURL_DISABLE_PARSEDATE "disables date parsing" OFF)
mark_as_advanced(CURL_DISABLE_PARSEDATE)
option(CURL_DISABLE_POP3 "disables POP3" OFF)
mark_as_advanced(CURL_DISABLE_POP3)
option(CURL_DISABLE_PROGRESS_METER "disables built-in progress meter" OFF)
mark_as_advanced(CURL_DISABLE_PROGRESS_METER)
option(CURL_DISABLE_PROXY "disables proxy support" OFF)
mark_as_advanced(CURL_DISABLE_PROXY)
option(CURL_DISABLE_RTSP "disables RTSP" OFF)
mark_as_advanced(CURL_DISABLE_RTSP)
option(CURL_DISABLE_SHUFFLE_DNS "disables shuffle DNS feature" OFF)
mark_as_advanced(CURL_DISABLE_SHUFFLE_DNS)
option(CURL_DISABLE_SMB "disables SMB" OFF)
mark_as_advanced(CURL_DISABLE_SMB)
option(CURL_DISABLE_SMTP "disables SMTP" OFF)
mark_as_advanced(CURL_DISABLE_SMTP)
option(CURL_DISABLE_SOCKETPAIR "disables use of socketpair for curl_multi_poll" OFF)
mark_as_advanced(CURL_DISABLE_SOCKETPAIR)
option(CURL_DISABLE_TELNET "disables Telnet" OFF)
mark_as_advanced(CURL_DISABLE_TELNET)
option(CURL_DISABLE_TFTP "disables TFTP" OFF)
mark_as_advanced(CURL_DISABLE_TFTP)
option(CURL_DISABLE_VERBOSE_STRINGS "disables verbose strings" OFF)
mark_as_advanced(CURL_DISABLE_VERBOSE_STRINGS)
# Corresponds to HTTP_ONLY in lib/curl_setup.h
option(HTTP_ONLY "disables all protocols except HTTP (This overrides all CURL_DISABLE_* options)" OFF)
mark_as_advanced(HTTP_ONLY)
if(HTTP_ONLY)
set(CURL_DISABLE_DICT ON)
set(CURL_DISABLE_FILE ON)
set(CURL_DISABLE_FTP ON)
set(CURL_DISABLE_GOPHER ON)
set(CURL_DISABLE_IMAP ON)
set(CURL_DISABLE_LDAP ON)
set(CURL_DISABLE_LDAPS ON)
set(CURL_DISABLE_MQTT ON)
set(CURL_DISABLE_POP3 ON)
set(CURL_DISABLE_RTSP ON)
set(CURL_DISABLE_SMB ON)
set(CURL_DISABLE_SMTP ON)
set(CURL_DISABLE_TELNET ON)
set(CURL_DISABLE_TFTP ON)
endif()
option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
mark_as_advanced(ENABLE_IPV6)
if(ENABLE_IPV6 AND NOT WIN32)
include(CheckStructHasMember)
check_struct_has_member("struct sockaddr_in6" sin6_addr "netinet/in.h"
HAVE_SOCKADDR_IN6_SIN6_ADDR)
check_struct_has_member("struct sockaddr_in6" sin6_scope_id "netinet/in.h"
HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID)
if(NOT HAVE_SOCKADDR_IN6_SIN6_ADDR)
message(WARNING "struct sockaddr_in6 not available, disabling IPv6 support")
# Force the feature off as this name is used as guard macro...
set(ENABLE_IPV6 OFF
CACHE BOOL "Define if you want to enable IPv6 support" FORCE)
endif()
if(CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND NOT ENABLE_ARES)
set(use_core_foundation ON)
find_library(SYSTEMCONFIGURATION_FRAMEWORK "SystemConfiguration")
if(NOT SYSTEMCONFIGURATION_FRAMEWORK)
message(FATAL_ERROR "SystemConfiguration framework not found")
endif()
list(APPEND CURL_LIBS "-framework SystemConfiguration")
endif()
endif()
if(USE_MANUAL)
#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..
curl_nroff_check()
endif()
find_package(Perl)
cmake_dependent_option(ENABLE_MANUAL "to provide the built-in manual"
ON "NROFF_USEFUL;PERL_FOUND"
OFF)
if(ENABLE_MANUAL)
set(USE_MANUAL ON)
endif()
if(CURL_STATIC_CRT)
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /MT")
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /MTd")
endif()
# Disable warnings on Borland to avoid changing 3rd party code.
if(BORLAND)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w-")
endif()
# If we are on AIX, do the _ALL_SOURCE magic
if(${CMAKE_SYSTEM_NAME} MATCHES AIX)
set(_ALL_SOURCE 1)
endif()
# If we are on Haiku, make sure that the network library is brought in.
if(${CMAKE_SYSTE_NAME} MATCHES Haiku)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -lnetwork")
endif()
# Include all the necessary files for macros
include(CMakePushCheckState)
include(CheckFunctionExists)
include(CheckIncludeFile)
include(CheckIncludeFiles)
include(CheckLibraryExists)
include(CheckSymbolExists)
include(CheckTypeSize)
include(CheckCSourceCompiles)
# On windows preload settings
if(WIN32)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_WINSOCKAPI_=)
include(${CMAKE_CURRENT_SOURCE_DIR}/CMake/Platforms/WindowsCache.cmake)
endif()
if(ENABLE_THREADED_RESOLVER)
find_package(Threads REQUIRED)
if(WIN32)
set(USE_THREADS_WIN32 ON)
else()
set(USE_THREADS_POSIX ${CMAKE_USE_PTHREADS_INIT})
set(HAVE_PTHREAD_H ${CMAKE_USE_PTHREADS_INIT})
endif()
set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
endif()
# Check for all needed libraries
check_library_exists_concat("socket" connect HAVE_LIBSOCKET)
check_function_exists(gethostname HAVE_GETHOSTNAME)
if(WIN32)
check_library_exists_concat("ws2_32" getch HAVE_LIBWS2_32)
check_library_exists_concat("winmm" getch HAVE_LIBWINMM)
endif()
# check SSL libraries
# TODO support GnuTLS
option(CURL_ENABLE_SSL "Enable SSL support" ON)
if(APPLE)
cmake_dependent_option(CURL_USE_SECTRANSP "enable Apple OS native SSL/TLS" OFF CURL_ENABLE_SSL OFF)
endif()
if(WIN32)
cmake_dependent_option(CURL_USE_SCHANNEL "enable Windows native SSL/TLS" OFF CURL_ENABLE_SSL OFF)
cmake_dependent_option(CURL_WINDOWS_SSPI "Use windows libraries to allow NTLM authentication without OpenSSL" ON
CURL_USE_SCHANNEL OFF)
endif()
cmake_dependent_option(CURL_USE_MBEDTLS "Enable mbedTLS for SSL/TLS" OFF CURL_ENABLE_SSL OFF)
cmake_dependent_option(CURL_USE_BEARSSL "Enable BearSSL for SSL/TLS" OFF CURL_ENABLE_SSL OFF)
cmake_dependent_option(CURL_USE_NSS "Enable NSS for SSL/TLS" OFF CURL_ENABLE_SSL OFF)
cmake_dependent_option(CURL_USE_WOLFSSL "enable wolfSSL for SSL/TLS" OFF CURL_ENABLE_SSL OFF)
set(openssl_default ON)
if(WIN32 OR CURL_USE_SECTRANSP OR CURL_USE_SCHANNEL OR CURL_USE_MBEDTLS OR CURL_USE_NSS OR CURL_USE_WOLFSSL)
set(openssl_default OFF)
endif()
cmake_dependent_option(CURL_USE_OPENSSL "Use OpenSSL code. Experimental" ${openssl_default} CURL_ENABLE_SSL OFF)
option(CURL_DISABLE_OPENSSL_AUTO_LOAD_CONFIG "Disable automatic loading of OpenSSL configuration" OFF)
count_true(enabled_ssl_options_count
CURL_USE_SCHANNEL
CURL_USE_SECTRANSP
CURL_USE_OPENSSL
CURL_USE_MBEDTLS
CURL_USE_BEARSSL
CURL_USE_NSS
CURL_USE_WOLFSSL
)
if(enabled_ssl_options_count GREATER "1")
set(CURL_WITH_MULTI_SSL ON)
endif()
if(CURL_USE_SCHANNEL)
set(SSL_ENABLED ON)
set(USE_SCHANNEL ON) # Windows native SSL/TLS support
set(USE_WINDOWS_SSPI ON) # CURL_USE_SCHANNEL implies CURL_WINDOWS_SSPI
endif()
if(CURL_WINDOWS_SSPI)
set(USE_WINDOWS_SSPI ON)
endif()
if(CURL_USE_SECTRANSP)
set(use_core_foundation ON)
find_library(SECURITY_FRAMEWORK "Security")
if(NOT SECURITY_FRAMEWORK)
message(FATAL_ERROR "Security framework not found")
endif()
set(SSL_ENABLED ON)
set(USE_SECTRANSP ON)
list(APPEND CURL_LIBS "-framework Security")
endif()
if(use_core_foundation)
find_library(COREFOUNDATION_FRAMEWORK "CoreFoundation")
if(NOT COREFOUNDATION_FRAMEWORK)
message(FATAL_ERROR "CoreFoundation framework not found")
endif()
list(APPEND CURL_LIBS "-framework CoreFoundation")
endif()
# Keep compression lib detection before TLS detection, which
# might depend on it.
set(HAVE_LIBZ OFF)
set(USE_ZLIB OFF)
optional_dependency(ZLIB)
if(ZLIB_FOUND)
set(HAVE_LIBZ ON)
set(USE_ZLIB ON)
# Depend on ZLIB via imported targets if supported by the running
# version of CMake. This allows our dependents to get our dependencies
# transitively.
if(NOT CMAKE_VERSION VERSION_LESS 3.4)
list(APPEND CURL_LIBS ZLIB::ZLIB)
else()
list(APPEND CURL_LIBS ${ZLIB_LIBRARIES})
include_directories(${ZLIB_INCLUDE_DIRS})
endif()
list(APPEND CMAKE_REQUIRED_INCLUDES ${ZLIB_INCLUDE_DIRS})
endif()
option(CURL_BROTLI "Set to ON to enable building curl with brotli support." OFF)
set(HAVE_BROTLI OFF)
if(CURL_BROTLI)
find_package(Brotli QUIET)
if(BROTLI_FOUND)
set(HAVE_BROTLI ON)
list(APPEND CURL_LIBS ${BROTLI_LIBRARIES})
include_directories(${BROTLI_INCLUDE_DIRS})
list(APPEND CMAKE_REQUIRED_INCLUDES ${BROTLI_INCLUDE_DIRS})
endif()
endif()
option(CURL_ZSTD "Set to ON to enable building curl with zstd support." OFF)
set(HAVE_ZSTD OFF)
if(CURL_ZSTD)
find_package(Zstd REQUIRED)
if (NOT DEFINED HAVE_ZSTD_CREATEDSTREAM)
cmake_push_check_state()
set(CMAKE_REQUIRED_INCLUDES ${Zstd_INCLUDE_DIRS})
set(CMAKE_REQUIRED_LIBRARIES ${Zstd_LIBRARIES})
check_symbol_exists(ZSTD_createDStream "zstd.h" HAVE_ZSTD_CREATEDSTREAM)
cmake_pop_check_state()
endif()
if(Zstd_FOUND AND HAVE_ZSTD_CREATEDSTREAM)
set(HAVE_ZSTD ON)
list(APPEND CURL_LIBS ${Zstd_LIBRARIES})
include_directories(${Zstd_INCLUDE_DIRS})
endif()
endif()
if(CURL_USE_OPENSSL)
find_package(OpenSSL REQUIRED)
set(SSL_ENABLED ON)
set(USE_OPENSSL ON)
# Depend on OpenSSL via imported targets if supported by the running
# version of CMake. This allows our dependents to get our dependencies
# transitively.
if(NOT CMAKE_VERSION VERSION_LESS 3.4)
list(APPEND CURL_LIBS OpenSSL::SSL OpenSSL::Crypto)
else()
list(APPEND CURL_LIBS ${OPENSSL_LIBRARIES})
include_directories(${OPENSSL_INCLUDE_DIR})
endif()
set(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
if(NOT DEFINED HAVE_RAND_EGD)
check_symbol_exists(RAND_egd "${CURL_INCLUDES}" HAVE_RAND_EGD)
endif()
if(NOT DEFINED HAVE_BORINGSSL)
check_symbol_exists(OPENSSL_IS_BORINGSSL "openssl/base.h" HAVE_BORINGSSL)
endif()
endif()
if(CURL_USE_MBEDTLS)
find_package(MbedTLS REQUIRED)
set(SSL_ENABLED ON)
set(USE_MBEDTLS ON)
list(APPEND CURL_LIBS ${MBEDTLS_LIBRARIES})
include_directories(${MBEDTLS_INCLUDE_DIRS})
endif()
if(CURL_USE_BEARSSL)
find_package(BearSSL REQUIRED)
set(SSL_ENABLED ON)
set(USE_BEARSSL ON)
list(APPEND CURL_LIBS ${BEARSSL_LIBRARY})
include_directories(${BEARSSL_INCLUDE_DIRS})
endif()
if(CURL_USE_WOLFSSL)
find_package(WolfSSL REQUIRED)
set(SSL_ENABLED ON)
set(USE_WOLFSSL ON)
list(APPEND CURL_LIBS ${WolfSSL_LIBRARIES})
include_directories(${WolfSSL_INCLUDE_DIRS})
endif()
if(CURL_USE_NSS)
find_package(NSS REQUIRED)
include_directories(${NSS_INCLUDE_DIRS})
list(APPEND CURL_LIBS ${NSS_LIBRARIES})
set(SSL_ENABLED ON)
set(USE_NSS ON)
if(NOT DEFINED HAVE_PK11_CREATEMANAGEDGENERICOBJECT)
cmake_push_check_state()
set(CMAKE_REQUIRED_INCLUDES ${NSS_INCLUDE_DIRS})
set(CMAKE_REQUIRED_LIBRARIES ${NSS_LIBRARIES})
check_symbol_exists(PK11_CreateManagedGenericObject "pk11pub.h" HAVE_PK11_CREATEMANAGEDGENERICOBJECT)
cmake_pop_check_state()
endif()
endif()
option(USE_NGHTTP2 "Use Nghttp2 library" OFF)
if(USE_NGHTTP2)
find_package(NGHTTP2 REQUIRED)
include_directories(${NGHTTP2_INCLUDE_DIRS})
list(APPEND CURL_LIBS ${NGHTTP2_LIBRARIES})
endif()
function(CheckQuicSupportInOpenSSL)
# Be sure that the OpenSSL/wolfSSL library actually supports QUIC.
if(NOT DEFINED HAVE_SSL_CTX_SET_QUIC_METHOD)
cmake_push_check_state()
if(USE_WOLFSSL)
set(CMAKE_REQUIRED_INCLUDES "${WolfSSL_INCLUDE_DIRS}")
set(CMAKE_REQUIRED_LIBRARIES "${WolfSSL_LIBRARIES}")
if(HAVE_LIBZ)
list(APPEND CMAKE_REQUIRED_INCLUDES "${ZLIB_INCLUDE_DIRS}")
list(APPEND CMAKE_REQUIRED_LIBRARIES "${ZLIB_LIBRARIES}")
endif()
if(WIN32)
list(APPEND CMAKE_REQUIRED_LIBRARIES "crypt32")
endif()
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_UINTPTR_T) # to pull in stdint.h (as of wolfSSL v5.5.4)
check_symbol_exists(wolfSSL_set_quic_method "wolfssl/options.h;wolfssl/openssl/ssl.h" HAVE_SSL_CTX_SET_QUIC_METHOD)
else()
set(CMAKE_REQUIRED_INCLUDES "${OPENSSL_INCLUDE_DIR}")
set(CMAKE_REQUIRED_LIBRARIES "${OPENSSL_LIBRARIES}")
check_symbol_exists(SSL_CTX_set_quic_method "openssl/ssl.h" HAVE_SSL_CTX_SET_QUIC_METHOD)
endif()
cmake_pop_check_state()
endif()
if(NOT HAVE_SSL_CTX_SET_QUIC_METHOD)
message(FATAL_ERROR "QUIC support is missing in OpenSSL/BoringSSL/wolfSSL. Try setting -DOPENSSL_ROOT_DIR")
endif()
endfunction()
option(USE_NGTCP2 "Use ngtcp2 and nghttp3 libraries for HTTP/3 support" OFF)
if(USE_NGTCP2)
if(USE_OPENSSL OR USE_WOLFSSL)
if(USE_WOLFSSL)
find_package(NGTCP2 REQUIRED wolfSSL)
elseif(HAVE_BORINGSSL)
find_package(NGTCP2 REQUIRED BoringSSL)
else()
find_package(NGTCP2 REQUIRED OpenSSL)
endif()
CheckQuicSupportInOpenSSL()
elseif(USE_GNUTLS)
# TODO add GnuTLS support as vtls library.
find_package(NGTCP2 REQUIRED GnuTLS)
else()
message(FATAL_ERROR "ngtcp2 requires OpenSSL, wolfSSL or GnuTLS")
endif()
set(USE_NGTCP2 ON)
include_directories(${NGTCP2_INCLUDE_DIRS})
list(APPEND CURL_LIBS ${NGTCP2_LIBRARIES})
find_package(NGHTTP3 REQUIRED)
set(USE_NGHTTP3 ON)
include_directories(${NGHTTP3_INCLUDE_DIRS})
list(APPEND CURL_LIBS ${NGHTTP3_LIBRARIES})
endif()
option(USE_QUICHE "Use quiche library for HTTP/3 support" OFF)
if(USE_QUICHE)
if(USE_NGTCP2)
message(FATAL_ERROR "Only one HTTP/3 backend can be selected!")
endif()
find_package(QUICHE REQUIRED)
CheckQuicSupportInOpenSSL()
set(USE_QUICHE ON)
include_directories(${QUICHE_INCLUDE_DIRS})
list(APPEND CURL_LIBS ${QUICHE_LIBRARIES})
if(NOT DEFINED HAVE_QUICHE_CONN_SET_QLOG_FD)
cmake_push_check_state()
set(CMAKE_REQUIRED_INCLUDES "${QUICHE_INCLUDE_DIRS}")
set(CMAKE_REQUIRED_LIBRARIES "${QUICHE_LIBRARIES}")
check_symbol_exists(quiche_conn_set_qlog_fd "quiche.h" HAVE_QUICHE_CONN_SET_QLOG_FD)
cmake_pop_check_state()
endif()
endif()
option(USE_MSH3 "Use msquic library for HTTP/3 support" OFF)
if(USE_MSH3)
if(USE_NGTCP2 OR USE_QUICHE)
message(FATAL_ERROR "Only one HTTP/3 backend can be selected!")
endif()
set(USE_MSH3 ON)
include_directories(${MSH3_INCLUDE_DIRS})
list(APPEND CURL_LIBS ${MSH3_LIBRARIES})
endif()
if(NOT CURL_DISABLE_LDAP)
if(WIN32)
option(USE_WIN32_LDAP "Use Windows LDAP implementation" ON)
if(USE_WIN32_LDAP)
check_library_exists_concat("wldap32" cldap_open HAVE_WLDAP32)
if(NOT HAVE_WLDAP32)
set(USE_WIN32_LDAP OFF)
elseif(NOT CURL_DISABLE_LDAPS)
set(HAVE_LDAP_SSL ON)
endif()
endif()
endif()
option(CURL_USE_OPENLDAP "Use OpenLDAP code." OFF)
mark_as_advanced(CURL_USE_OPENLDAP)
set(CMAKE_LDAP_LIB "ldap" CACHE STRING "Name or full path to ldap library")
set(CMAKE_LBER_LIB "lber" CACHE STRING "Name or full path to lber library")
if(CURL_USE_OPENLDAP AND USE_WIN32_LDAP)
message(FATAL_ERROR "Cannot use USE_WIN32_LDAP and CURL_USE_OPENLDAP at the same time")
endif()
# Now that we know, we're not using windows LDAP...
if(USE_WIN32_LDAP)
check_include_file_concat("winldap.h" HAVE_WINLDAP_H)
else()
# Check for LDAP
set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES})
check_library_exists_concat(${CMAKE_LDAP_LIB} ldap_init HAVE_LIBLDAP)
check_library_exists_concat(${CMAKE_LBER_LIB} ber_init HAVE_LIBLBER)
set(CMAKE_REQUIRED_INCLUDES_BAK ${CMAKE_REQUIRED_INCLUDES})
set(CMAKE_LDAP_INCLUDE_DIR "" CACHE STRING "Path to LDAP include directory")
if(CMAKE_LDAP_INCLUDE_DIR)
list(APPEND CMAKE_REQUIRED_INCLUDES ${CMAKE_LDAP_INCLUDE_DIR})
endif()
check_include_file_concat("ldap.h" HAVE_LDAP_H)
check_include_file_concat("lber.h" HAVE_LBER_H)
if(NOT HAVE_LDAP_H)
message(STATUS "LDAP_H not found CURL_DISABLE_LDAP set ON")
set(CURL_DISABLE_LDAP ON CACHE BOOL "" FORCE)
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_BAK}) #LDAP includes won't be used
elseif(NOT HAVE_LIBLDAP)
message(STATUS "LDAP library '${CMAKE_LDAP_LIB}' not found CURL_DISABLE_LDAP set ON")
set(CURL_DISABLE_LDAP ON CACHE BOOL "" FORCE)
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_BAK}) #LDAP includes won't be used
else()
if(CURL_USE_OPENLDAP)
set(USE_OPENLDAP ON)
endif()
if(CMAKE_LDAP_INCLUDE_DIR)
include_directories(${CMAKE_LDAP_INCLUDE_DIR})
endif()
set(NEED_LBER_H ON)
set(_HEADER_LIST)
if(HAVE_WINDOWS_H)
list(APPEND _HEADER_LIST "windows.h")
endif()
if(HAVE_SYS_TYPES_H)
list(APPEND _HEADER_LIST "sys/types.h")
endif()
list(APPEND _HEADER_LIST "ldap.h")
set(_SRC_STRING "")
foreach(_HEADER ${_HEADER_LIST})
set(_INCLUDE_STRING "${_INCLUDE_STRING}#include <${_HEADER}>\n")
endforeach()
set(_SRC_STRING
"
${_INCLUDE_STRING}
int main(int argc, char ** argv)
{
BerValue *bvp = NULL;
BerElement *bep = ber_init(bvp);
ber_free(bep, 1);
return 0;
}"
)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DLDAP_DEPRECATED=1)
list(APPEND CMAKE_REQUIRED_LIBRARIES ${CMAKE_LDAP_LIB})
if(HAVE_LIBLBER)
list(APPEND CMAKE_REQUIRED_LIBRARIES ${CMAKE_LBER_LIB})
endif()
check_c_source_compiles("${_SRC_STRING}" NOT_NEED_LBER_H)
unset(CMAKE_REQUIRED_LIBRARIES)
if(NOT_NEED_LBER_H)
set(NEED_LBER_H OFF)
else()
set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -DNEED_LBER_H")
endif()
endif()
endif()
endif()
# No ldap, no ldaps.
if(CURL_DISABLE_LDAP)
if(NOT CURL_DISABLE_LDAPS)
message(STATUS "LDAP needs to be enabled to support LDAPS")
set(CURL_DISABLE_LDAPS ON CACHE BOOL "" FORCE)
endif()
endif()
if(NOT CURL_DISABLE_LDAPS)
check_include_file_concat("ldap_ssl.h" HAVE_LDAP_SSL_H)
endif()
# Check for idn2
option(USE_LIBIDN2 "Use libidn2 for IDN support" ON)
if(USE_LIBIDN2)
check_library_exists_concat("idn2" idn2_lookup_ul HAVE_LIBIDN2)
else()
set(HAVE_LIBIDN2 OFF)
endif()
if(WIN32)
option(USE_WIN32_IDN "Use WinIDN for IDN support" OFF)
if(USE_WIN32_IDN)
list(APPEND CURL_LIBS "normaliz")
endif()
endif()
#libpsl
option(CURL_USE_LIBPSL "Use libPSL" ON)
mark_as_advanced(CURL_USE_LIBPSL)
set(USE_LIBPSL OFF)
if(CURL_USE_LIBPSL)
find_package(LibPSL)
if(LIBPSL_FOUND)
list(APPEND CURL_LIBS ${LIBPSL_LIBRARY})
list(APPEND CMAKE_REQUIRED_INCLUDES "${LIBPSL_INCLUDE_DIR}")
include_directories("${LIBPSL_INCLUDE_DIR}")
set(USE_LIBPSL ON)
endif()
endif()
#libSSH2
option(CURL_USE_LIBSSH2 "Use libSSH2" ON)
mark_as_advanced(CURL_USE_LIBSSH2)
set(USE_LIBSSH2 OFF)
if(CURL_USE_LIBSSH2)
find_package(LibSSH2)
if(LIBSSH2_FOUND)
list(APPEND CURL_LIBS ${LIBSSH2_LIBRARY})
list(APPEND CMAKE_REQUIRED_INCLUDES "${LIBSSH2_INCLUDE_DIR}")
include_directories("${LIBSSH2_INCLUDE_DIR}")
set(USE_LIBSSH2 ON)
endif()
endif()
# libssh
option(CURL_USE_LIBSSH "Use libSSH" OFF)
mark_as_advanced(CURL_USE_LIBSSH)
if(NOT USE_LIBSSH2 AND CURL_USE_LIBSSH)
find_package(libssh CONFIG)
if(libssh_FOUND)
message(STATUS "Found libssh ${libssh_VERSION}")
# Use imported target for include and library paths.
list(APPEND CURL_LIBS ssh)
set(USE_LIBSSH ON)
endif()
endif()
option(CURL_USE_GSSAPI "Use GSSAPI implementation (right now only Heimdal is supported with CMake build)" OFF)
mark_as_advanced(CURL_USE_GSSAPI)
if(CURL_USE_GSSAPI)
find_package(GSS)
set(HAVE_GSSAPI ${GSS_FOUND})
if(GSS_FOUND)
message(STATUS "Found ${GSS_FLAVOUR} GSSAPI version: \"${GSS_VERSION}\"")
list(APPEND CMAKE_REQUIRED_INCLUDES ${GSS_INCLUDE_DIR})
check_include_file_concat("gssapi/gssapi.h" HAVE_GSSAPI_GSSAPI_H)
check_include_file_concat("gssapi/gssapi_generic.h" HAVE_GSSAPI_GSSAPI_GENERIC_H)
check_include_file_concat("gssapi/gssapi_krb5.h" HAVE_GSSAPI_GSSAPI_KRB5_H)
if(GSS_FLAVOUR STREQUAL "Heimdal")
set(HAVE_GSSHEIMDAL ON)
else() # MIT
set(HAVE_GSSMIT ON)
set(_INCLUDE_LIST "")
if(HAVE_GSSAPI_GSSAPI_H)
list(APPEND _INCLUDE_LIST "gssapi/gssapi.h")
endif()
if(HAVE_GSSAPI_GSSAPI_GENERIC_H)
list(APPEND _INCLUDE_LIST "gssapi/gssapi_generic.h")
endif()
if(HAVE_GSSAPI_GSSAPI_KRB5_H)
list(APPEND _INCLUDE_LIST "gssapi/gssapi_krb5.h")
endif()
string(REPLACE ";" " " _COMPILER_FLAGS_STR "${GSS_COMPILER_FLAGS}")
string(REPLACE ";" " " _LINKER_FLAGS_STR "${GSS_LINKER_FLAGS}")
foreach(_dir ${GSS_LINK_DIRECTORIES})
set(_LINKER_FLAGS_STR "${_LINKER_FLAGS_STR} -L\"${_dir}\"")
endforeach()
if(NOT DEFINED HAVE_GSS_C_NT_HOSTBASED_SERVICE)
set(CMAKE_REQUIRED_FLAGS "${_COMPILER_FLAGS_STR} ${_LINKER_FLAGS_STR}")
set(CMAKE_REQUIRED_LIBRARIES ${GSS_LIBRARIES})
check_symbol_exists("GSS_C_NT_HOSTBASED_SERVICE" ${_INCLUDE_LIST} HAVE_GSS_C_NT_HOSTBASED_SERVICE)
unset(CMAKE_REQUIRED_LIBRARIES)
endif()
if(NOT HAVE_GSS_C_NT_HOSTBASED_SERVICE)
set(HAVE_OLD_GSSMIT ON)
endif()
endif()
include_directories(${GSS_INCLUDE_DIR})
link_directories(${GSS_LINK_DIRECTORIES})
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GSS_COMPILER_FLAGS}")
string(REPLACE ";" " " GSS_LINKER_FLAGS "${GSS_LINKER_FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
set(CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
list(APPEND CURL_LIBS ${GSS_LIBRARIES})
else()
message(WARNING "GSSAPI support has been requested but no supporting libraries found. Skipping.")
endif()
endif()
option(ENABLE_UNIX_SOCKETS "Define if you want Unix domain sockets support" ON)
if(ENABLE_UNIX_SOCKETS)
include(CheckStructHasMember)
if(WIN32)
set(USE_UNIX_SOCKETS ON)
else()
check_struct_has_member("struct sockaddr_un" sun_path "sys/un.h" USE_UNIX_SOCKETS)
endif()
else()
unset(USE_UNIX_SOCKETS CACHE)
endif()
#
# CA handling
#
set(CURL_CA_BUNDLE "auto" CACHE STRING
"Path to the CA bundle. Set 'none' to disable or 'auto' for auto-detection. Defaults to 'auto'.")
set(CURL_CA_FALLBACK OFF CACHE BOOL
"Set ON to use built-in CA store of TLS backend. Defaults to OFF")
set(CURL_CA_PATH "auto" CACHE STRING
"Location of default CA path. Set 'none' to disable or 'auto' for auto-detection. Defaults to 'auto'.")
if("${CURL_CA_BUNDLE}" STREQUAL "")
message(FATAL_ERROR "Invalid value of CURL_CA_BUNDLE. Use 'none', 'auto' or file path.")
elseif("${CURL_CA_BUNDLE}" STREQUAL "none")
unset(CURL_CA_BUNDLE CACHE)
elseif("${CURL_CA_BUNDLE}" STREQUAL "auto")
unset(CURL_CA_BUNDLE CACHE)
if(NOT CMAKE_CROSSCOMPILING)
set(CURL_CA_BUNDLE_AUTODETECT TRUE)
endif()
else()
set(CURL_CA_BUNDLE_SET TRUE)
endif()
if("${CURL_CA_PATH}" STREQUAL "")
message(FATAL_ERROR "Invalid value of CURL_CA_PATH. Use 'none', 'auto' or directory path.")
elseif("${CURL_CA_PATH}" STREQUAL "none")
unset(CURL_CA_PATH CACHE)
elseif("${CURL_CA_PATH}" STREQUAL "auto")
unset(CURL_CA_PATH CACHE)
if(NOT CMAKE_CROSSCOMPILING AND NOT USE_NSS)
set(CURL_CA_PATH_AUTODETECT TRUE)
endif()
else()
set(CURL_CA_PATH_SET TRUE)
endif()
if(CURL_CA_BUNDLE_SET AND CURL_CA_PATH_AUTODETECT)
# Skip autodetection of unset CA path because CA bundle is set explicitly
elseif(CURL_CA_PATH_SET AND CURL_CA_BUNDLE_AUTODETECT)
# Skip autodetection of unset CA bundle because CA path is set explicitly
elseif(CURL_CA_PATH_AUTODETECT OR CURL_CA_BUNDLE_AUTODETECT)
# first try autodetecting a CA bundle, then a CA path
if(CURL_CA_BUNDLE_AUTODETECT)
set(SEARCH_CA_BUNDLE_PATHS
/etc/ssl/certs/ca-certificates.crt
/etc/pki/tls/certs/ca-bundle.crt
/usr/share/ssl/certs/ca-bundle.crt
/usr/local/share/certs/ca-root-nss.crt
/etc/ssl/cert.pem)
foreach(SEARCH_CA_BUNDLE_PATH ${SEARCH_CA_BUNDLE_PATHS})
if(EXISTS "${SEARCH_CA_BUNDLE_PATH}")
message(STATUS "Found CA bundle: ${SEARCH_CA_BUNDLE_PATH}")
set(CURL_CA_BUNDLE "${SEARCH_CA_BUNDLE_PATH}" CACHE STRING
"Path to the CA bundle. Set 'none' to disable or 'auto' for auto-detection. Defaults to 'auto'.")
set(CURL_CA_BUNDLE_SET TRUE CACHE BOOL "Path to the CA bundle has been set")
break()
endif()
endforeach()
endif()
if(CURL_CA_PATH_AUTODETECT AND (NOT CURL_CA_PATH_SET))
if(EXISTS "/etc/ssl/certs")
set(CURL_CA_PATH "/etc/ssl/certs" CACHE STRING
"Location of default CA path. Set 'none' to disable or 'auto' for auto-detection. Defaults to 'auto'.")
set(CURL_CA_PATH_SET TRUE CACHE BOOL "Path to the CA bundle has been set")
endif()
endif()
endif()
if(CURL_CA_PATH_SET AND NOT USE_OPENSSL AND NOT USE_MBEDTLS)
message(STATUS
"CA path only supported by OpenSSL, GnuTLS or mbed TLS. "
"Set CURL_CA_PATH=none or enable one of those TLS backends.")
endif()
# Check for header files
if(NOT UNIX)
check_include_file_concat("windows.h" HAVE_WINDOWS_H)
check_include_file_concat("ws2tcpip.h" HAVE_WS2TCPIP_H)
check_include_file_concat("winsock2.h" HAVE_WINSOCK2_H)
check_include_file_concat("wincrypt.h" HAVE_WINCRYPT_H)
endif()
check_include_file_concat("inttypes.h" HAVE_INTTYPES_H)
check_include_file_concat("sys/filio.h" HAVE_SYS_FILIO_H)
check_include_file_concat("sys/ioctl.h" HAVE_SYS_IOCTL_H)
check_include_file_concat("sys/param.h" HAVE_SYS_PARAM_H)
check_include_file_concat("sys/poll.h" HAVE_SYS_POLL_H)
check_include_file_concat("sys/resource.h" HAVE_SYS_RESOURCE_H)
check_include_file_concat("sys/select.h" HAVE_SYS_SELECT_H)
check_include_file_concat("sys/socket.h" HAVE_SYS_SOCKET_H)
check_include_file_concat("sys/sockio.h" HAVE_SYS_SOCKIO_H)
check_include_file_concat("sys/stat.h" HAVE_SYS_STAT_H)
check_include_file_concat("sys/time.h" HAVE_SYS_TIME_H)
check_include_file_concat("sys/types.h" HAVE_SYS_TYPES_H)
check_include_file_concat("sys/un.h" HAVE_SYS_UN_H)
check_include_file_concat("sys/utime.h" HAVE_SYS_UTIME_H)
check_include_file_concat("sys/xattr.h" HAVE_SYS_XATTR_H)
check_include_file_concat("arpa/inet.h" HAVE_ARPA_INET_H)
check_include_file_concat("arpa/tftp.h" HAVE_ARPA_TFTP_H)
check_include_file_concat("fcntl.h" HAVE_FCNTL_H)
check_include_file_concat("idn2.h" HAVE_IDN2_H)
check_include_file_concat("ifaddrs.h" HAVE_IFADDRS_H)
check_include_file_concat("io.h" HAVE_IO_H)
check_include_file_concat("libgen.h" HAVE_LIBGEN_H)
check_include_file_concat("locale.h" HAVE_LOCALE_H)
check_include_file_concat("net/if.h" HAVE_NET_IF_H)
check_include_file_concat("netdb.h" HAVE_NETDB_H)
check_include_file_concat("netinet/in.h" HAVE_NETINET_IN_H)
check_include_file_concat("netinet/tcp.h" HAVE_NETINET_TCP_H)
check_include_file("linux/tcp.h" HAVE_LINUX_TCP_H)
check_include_file_concat("poll.h" HAVE_POLL_H)
check_include_file_concat("pwd.h" HAVE_PWD_H)
check_include_file_concat("setjmp.h" HAVE_SETJMP_H)
check_include_file_concat("signal.h" HAVE_SIGNAL_H)