curl/CMake/FindMbedTLS.cmake
Viktor Szakats 26c39d8df1
cmke: add *_USE_STATIC_LIBS options for 9 dependencies
Via options:

- `BROTLI_USE_STATIC_LIBS`
- `CARES_USE_STATIC_LIBS`
- `LIBSSH_USE_STATIC_LIBS`
- `LIBSSH2_USE_STATIC_LIBS`
- `MBEDTLS_USE_STATIC_LIBS`
- `NGHTTP2_USE_STATIC_LIBS`
- `NGHTTP3_USE_STATIC_LIBS`
- `NGTCP2_USE_STATIC_LIBS`
- `ZSTD_USE_STATIC_LIBS`

When enabled, make a "best effort" finding static libs first and set
the "build static" macro (on Windows) as required by the dependency.

When doing `pkg-config`-based detections, make curl select the static
configuration, which shall set the "build static" macro also.

These options resemble CMake's `OPENSSL_USE_STATIC_LIBS` and
`ZLIB_USE_STATIC_LIBS` (the latter does not support `pkg-config` as of
CMake v4.2.2).

Shared/static library selection based on loose filename conventions is
fragile and prone to break if the non-static-suffixed library is found
and happens to be a shared library, or, if the linker decides to pick up
a shared copy (e.g. `.a.dll`) that shadows the static one. It may help
to provide either static or shared, but not both, on the disk, and match
that with this setting.

Experimental.

Ref: #20013
Closes #20015
2026-01-26 05:21:24 +01:00

125 lines
4.9 KiB
CMake

#***************************************************************************
# _ _ ____ _
# 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
#
###########################################################################
# Find the mbedTLS library
#
# Input variables:
#
# - `MBEDTLS_INCLUDE_DIR`: Absolute path to mbedTLS include directory.
# - `MBEDTLS_LIBRARY`: Absolute path to `mbedtls` library.
# - `MBEDX509_LIBRARY`: Absolute path to `mbedx509` library.
# - `MBEDCRYPTO_LIBRARY`: Absolute path to `mbedcrypto` library.
# - `MBEDTLS_USE_STATIC_LIBS`: Configure for static mbedTLS libraries.
#
# Defines:
#
# - `MBEDTLS_FOUND`: System has mbedTLS.
# - `MBEDTLS_VERSION`: Version of mbedTLS.
# - `CURL::mbedtls`: mbedTLS library target.
if(DEFINED MBEDTLS_INCLUDE_DIRS AND NOT DEFINED MBEDTLS_INCLUDE_DIR)
message(WARNING "MBEDTLS_INCLUDE_DIRS is deprecated, use MBEDTLS_INCLUDE_DIR instead.")
set(MBEDTLS_INCLUDE_DIR "${MBEDTLS_INCLUDE_DIRS}")
unset(MBEDTLS_INCLUDE_DIRS)
endif()
set(_mbedtls_pc_requires "mbedtls" "mbedx509" "mbedcrypto")
if(CURL_USE_PKGCONFIG AND
NOT DEFINED MBEDTLS_INCLUDE_DIR AND
NOT DEFINED MBEDTLS_LIBRARY AND
NOT DEFINED MBEDX509_LIBRARY AND
NOT DEFINED MBEDCRYPTO_LIBRARY)
find_package(PkgConfig QUIET)
pkg_check_modules(_mbedtls ${_mbedtls_pc_requires})
endif()
if(_mbedtls_FOUND)
set(MbedTLS_FOUND TRUE)
set(MBEDTLS_FOUND TRUE)
set(MBEDTLS_VERSION ${_mbedtls_mbedtls_VERSION})
if(MBEDTLS_USE_STATIC_LIBS)
set(_mbedtls_CFLAGS "${_mbedtls_STATIC_CFLAGS}")
set(_mbedtls_INCLUDE_DIRS "${_mbedtls_STATIC_INCLUDE_DIRS}")
set(_mbedtls_LIBRARY_DIRS "${_mbedtls_STATIC_LIBRARY_DIRS}")
set(_mbedtls_LIBRARIES "${_mbedtls_STATIC_LIBRARIES}")
endif()
message(STATUS "Found MbedTLS (via pkg-config): ${_mbedtls_INCLUDE_DIRS} (found version \"${MBEDTLS_VERSION}\")")
else()
set(_mbedtls_pc_requires "") # Depend on pkg-config only when found via pkg-config
find_path(MBEDTLS_INCLUDE_DIR NAMES "mbedtls/ssl.h")
if(MBEDTLS_USE_STATIC_LIBS)
find_library(MBEDTLS_LIBRARY NAMES "mbedtls_static" "libmbedtls_static" "mbedtls" "libmbedtls")
find_library(MBEDX509_LIBRARY NAMES "mbedx509_static" "libmbedx509_static" "mbedx509" "libmbedx509")
find_library(MBEDCRYPTO_LIBRARY NAMES "mbedcrypto_static" "libmbedcrypto_static" "mbedcrypto" "libmbedcrypto")
else()
find_library(MBEDTLS_LIBRARY NAMES "mbedtls" "libmbedtls")
find_library(MBEDX509_LIBRARY NAMES "mbedx509" "libmbedx509")
find_library(MBEDCRYPTO_LIBRARY NAMES "mbedcrypto" "libmbedcrypto")
endif()
unset(MBEDTLS_VERSION CACHE)
if(MBEDTLS_INCLUDE_DIR AND EXISTS "${MBEDTLS_INCLUDE_DIR}/mbedtls/build_info.h")
set(_version_regex "#[\t ]*define[\t ]+MBEDTLS_VERSION_STRING[\t ]+\"([0-9.]+)\"")
file(STRINGS "${MBEDTLS_INCLUDE_DIR}/mbedtls/build_info.h" _version_str REGEX "${_version_regex}")
string(REGEX REPLACE "${_version_regex}" "\\1" _version_str "${_version_str}")
set(MBEDTLS_VERSION "${_version_str}")
unset(_version_regex)
unset(_version_str)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(MbedTLS
REQUIRED_VARS
MBEDTLS_INCLUDE_DIR
MBEDTLS_LIBRARY
MBEDX509_LIBRARY
MBEDCRYPTO_LIBRARY
VERSION_VAR
MBEDTLS_VERSION
)
if(MBEDTLS_FOUND)
set(_mbedtls_INCLUDE_DIRS ${MBEDTLS_INCLUDE_DIR})
set(_mbedtls_LIBRARIES ${MBEDTLS_LIBRARY} ${MBEDX509_LIBRARY} ${MBEDCRYPTO_LIBRARY})
endif()
mark_as_advanced(MBEDTLS_INCLUDE_DIR MBEDTLS_LIBRARY MBEDX509_LIBRARY MBEDCRYPTO_LIBRARY)
endif()
if(MBEDTLS_FOUND)
if(CMAKE_VERSION VERSION_LESS 3.13)
link_directories(${_mbedtls_LIBRARY_DIRS})
endif()
if(NOT TARGET CURL::mbedtls)
add_library(CURL::mbedtls INTERFACE IMPORTED)
set_target_properties(CURL::mbedtls PROPERTIES
INTERFACE_LIBCURL_PC_MODULES "${_mbedtls_pc_requires}"
INTERFACE_COMPILE_OPTIONS "${_mbedtls_CFLAGS}"
INTERFACE_INCLUDE_DIRECTORIES "${_mbedtls_INCLUDE_DIRS}"
INTERFACE_LINK_DIRECTORIES "${_mbedtls_LIBRARY_DIRS}"
INTERFACE_LINK_LIBRARIES "${_mbedtls_LIBRARIES}")
endif()
endif()