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curl/CMake/curl-config.in.cmake
Viktor Szakats 89043ba906
cmake: drop support for CMake 3.17 and older 
Require CMake 3.18 (2020-07-15) or newer, up from 3.7 (2016-11-11)
prior to this patch.

This requirement also applies to the distributed `curl-config.cmake`.

To allow dropping compatibility code maintained for old versions, and to
use features which were unpractical in separate code paths. Also to make
testing, documentation and development easier, CI builds faster due to
CMake performance improvements over time. (e.g. integration tests on
macOS run 8x faster (10 minutes is now under 1.5m) in CI, 2.5x faster on
Windows.)

CMake offers pre-built binaries for major platforms. They work without
an install step, just by unpacking and pointing the cmake command to
them. Making upgrades easy in many cases:
https://cmake.org/download/
https://cmake.org/files/
https://github.com/Kitware/CMake/releases

CMake 3.18 brings these feature as generally available when building or
consuming curl/libcurl:

LTO support, improved performance, `pkg-config` and interface target
support, `OBJECT` target (for faster libcurl builds), modern invocation
with `-S`/`-B` options, better support for custom linker options,
FetchContent, `GnuTLS::GnuTLS` target, `--verbose` and `--install`
options, `CMAKE_GENERATOR` env, last but not least unity mode and Ninja
generator.

For maximum build speed, use:
`-DCMAKE_UNITY_BUILD=ON -DCURL_DROP_UNUSED=ON`

As for deprecations, C++11 is required to build CMake itself, which may
be a limit on some platforms. autotools continues to cover them.

Follow-up to 9bcdfb3809 #20408
Follow-up to a7c974e038 #19902
Follow-up to dfbe035c8b #10161
Discussion: https://github.com/curl/curl/discussions/18704

Closes #20407
2026-03-21 13:24:47 +01:00

194 lines
6.1 KiB
CMake
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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
#
###########################################################################
@PACKAGE_INIT@
option(CURL_USE_PKGCONFIG "Enable pkg-config to detect @PROJECT_NAME@ dependencies. Default: @CURL_USE_PKGCONFIG@"
"@CURL_USE_PKGCONFIG@")
if(CMAKE_VERSION VERSION_LESS @CMAKE_MINIMUM_REQUIRED_VERSION@)
message(STATUS "@PROJECT_NAME@: @PROJECT_NAME@-specific Find modules require "
"CMake @CMAKE_MINIMUM_REQUIRED_VERSION@ or upper, found: ${CMAKE_VERSION}.")
endif()
include(CMakeFindDependencyMacro)
if("@USE_OPENSSL@")
if("@OPENSSL_VERSION_MAJOR@")
find_dependency(OpenSSL "@OPENSSL_VERSION_MAJOR@")
else()
find_dependency(OpenSSL)
endif()
# Define lib duplicate to fixup lib order for GCC binutils ld in static builds
if(TARGET OpenSSL::Crypto AND NOT TARGET CURL::OpenSSL_Crypto)
add_library(CURL::OpenSSL_Crypto INTERFACE IMPORTED)
set_target_properties(CURL::OpenSSL_Crypto PROPERTIES INTERFACE_LINK_LIBRARIES OpenSSL::Crypto)
endif()
endif()
if("@HAVE_LIBZ@")
find_dependency(ZLIB "@ZLIB_VERSION_MAJOR@")
# Define lib duplicate to fixup lib order for GCC binutils ld in static builds
if(TARGET ZLIB::ZLIB AND NOT TARGET CURL::ZLIB)
add_library(CURL::ZLIB INTERFACE IMPORTED)
set_target_properties(CURL::ZLIB PROPERTIES INTERFACE_LINK_LIBRARIES ZLIB::ZLIB)
endif()
endif()
set(_curl_cmake_module_path_save ${CMAKE_MODULE_PATH})
list(PREPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
set(_curl_libs "")
if("@HAVE_BROTLI@")
find_dependency(Brotli MODULE)
list(APPEND _curl_libs CURL::brotli)
endif()
if("@USE_ARES@")
find_dependency(Cares MODULE)
list(APPEND _curl_libs CURL::cares)
endif()
if("@HAVE_GSSAPI@")
find_dependency(GSS MODULE)
list(APPEND _curl_libs CURL::gss)
endif()
if("@USE_BACKTRACE@")
find_dependency(Libbacktrace MODULE)
list(APPEND _curl_libs CURL::libbacktrace)
endif()
if("@USE_GSASL@")
find_dependency(Libgsasl MODULE)
list(APPEND _curl_libs CURL::libgsasl)
endif()
if(NOT "@USE_WIN32_LDAP@" AND NOT "@CURL_DISABLE_LDAP@")
find_dependency(LDAP MODULE)
list(APPEND _curl_libs CURL::ldap)
endif()
if("@HAVE_LIBIDN2@")
find_dependency(Libidn2 MODULE)
list(APPEND _curl_libs CURL::libidn2)
endif()
if("@USE_LIBPSL@")
find_dependency(Libpsl MODULE)
list(APPEND _curl_libs CURL::libpsl)
endif()
if("@USE_LIBRTMP@")
find_dependency(Librtmp MODULE)
list(APPEND _curl_libs CURL::librtmp)
endif()
if("@USE_LIBSSH@")
find_dependency(Libssh MODULE)
list(APPEND _curl_libs CURL::libssh)
endif()
if("@USE_LIBSSH2@")
find_dependency(Libssh2 MODULE)
list(APPEND _curl_libs CURL::libssh2)
endif()
if("@USE_LIBUV@")
find_dependency(Libuv MODULE)
list(APPEND _curl_libs CURL::libuv)
endif()
if("@USE_MBEDTLS@")
find_dependency(MbedTLS MODULE)
list(APPEND _curl_libs CURL::mbedtls)
endif()
if("@USE_NGHTTP2@")
find_dependency(NGHTTP2 MODULE)
list(APPEND _curl_libs CURL::nghttp2)
endif()
if("@USE_NGHTTP3@")
find_dependency(NGHTTP3 MODULE)
list(APPEND _curl_libs CURL::nghttp3)
endif()
if("@USE_NGTCP2@")
find_dependency(NGTCP2 MODULE)
list(APPEND _curl_libs CURL::ngtcp2)
endif()
if("@USE_GNUTLS@")
find_dependency(GnuTLS MODULE)
list(APPEND _curl_libs CURL::gnutls)
find_dependency(Nettle MODULE)
list(APPEND _curl_libs CURL::nettle)
endif()
if("@USE_QUICHE@")
find_dependency(Quiche MODULE)
list(APPEND _curl_libs CURL::quiche)
endif()
if("@USE_RUSTLS@")
find_dependency(Rustls MODULE)
list(APPEND _curl_libs CURL::rustls)
endif()
if("@USE_WOLFSSL@")
find_dependency(WolfSSL MODULE)
list(APPEND _curl_libs CURL::wolfssl)
endif()
if("@HAVE_ZSTD@")
find_dependency(Zstd MODULE)
list(APPEND _curl_libs CURL::zstd)
endif()
set(CMAKE_MODULE_PATH ${_curl_cmake_module_path_save})
# Define lib duplicate to fixup lib order for GCC binutils ld in static builds
if(WIN32 AND NOT TARGET CURL::win32_winsock)
add_library(CURL::win32_winsock INTERFACE IMPORTED)
set_target_properties(CURL::win32_winsock PROPERTIES INTERFACE_LINK_LIBRARIES "ws2_32")
endif()
include("${CMAKE_CURRENT_LIST_DIR}/@TARGETS_EXPORT_NAME@.cmake")
# Alias for either shared or static library
if(NOT TARGET @PROJECT_NAME@::@LIB_NAME@)
add_library(@PROJECT_NAME@::@LIB_NAME@ ALIAS @PROJECT_NAME@::@LIB_SELECTED@)
endif()
# For compatibility with CMake's FindCURL.cmake
set(CURL_VERSION_STRING "@CURLVERSION@")
set(CURL_LIBRARIES @PROJECT_NAME@::@LIB_NAME@)
set(CURL_LIBRARIES_PRIVATE "@LIBCURL_PC_LIBS_PRIVATE_LIST@")
set_and_check(CURL_INCLUDE_DIRS "@PACKAGE_CMAKE_INSTALL_INCLUDEDIR@")
set(CURL_SUPPORTED_PROTOCOLS "@CURL_SUPPORTED_PROTOCOLS_LIST@")
set(CURL_SUPPORTED_FEATURES "@CURL_SUPPORTED_FEATURES_LIST@")
foreach(_curl_item IN LISTS CURL_SUPPORTED_PROTOCOLS CURL_SUPPORTED_FEATURES)
set(CURL_SUPPORTS_${_curl_item} TRUE)
endforeach()
set(_curl_missing_req "")
foreach(_curl_item IN LISTS CURL_FIND_COMPONENTS)
if(CURL_SUPPORTS_${_curl_item})
set(CURL_${_curl_item}_FOUND TRUE)
elseif(CURL_FIND_REQUIRED_${_curl_item})
list(APPEND _curl_missing_req ${_curl_item})
endif()
endforeach()
if(_curl_missing_req)
string(REPLACE ";" " " _curl_missing_req "${_curl_missing_req}")
if(CURL_FIND_REQUIRED)
message(FATAL_ERROR "@PROJECT_NAME@: missing required components: ${_curl_missing_req}")
endif()
unset(_curl_missing_req)
endif()
check_required_components("@PROJECT_NAME@")
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