#[=======================================================================[.rst
FindMbedTLS
-----------
FindModule for MbedTLS and associated libraries
Components
^^^^^^^^^^
This module contains provides several components:
``MbedCrypto``
``MbedTLS``
``MbedX509``
Import targets exist for each component.
Imported Targets
^^^^^^^^^^^^^^^^
This module defines the :prop_tgt:`IMPORTED` targets:
``MbedTLS::MbedCrypto``
Crypto component
``MbedTLS::MbedTLS``
TLS component
``MbedTLS::MbedX509``
X509 component
Result Variables
^^^^^^^^^^^^^^^^
This module sets the following variables:
``MbedTLS_FOUND``
True, if all required components and the core library were found.
``MbedTLS_VERSION``
Detected version of found MbedTLS libraries.
``MbedTLS_<COMPONENT>_VERSION``
Detected version of found MbedTLS component library.
Cache variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``MbedTLS_<COMPONENT>_LIBRARY``
Path to the library component of MbedTLS.
``MbedTLS_<COMPONENT>_INCLUDE_DIR``
Directory containing ``<COMPONENT>.h``.
Distributed under the MIT License, see accompanying LICENSE file or
https://github.com/PatTheMav/cmake-finders/blob/master/LICENSE for details.
(c) 2023 Patrick Heyer
#]=======================================================================]
# cmake-format: off
# cmake-lint: disable=C0103
# cmake-lint: disable=C0301
# cmake-lint: disable=C0307
# cmake-format: on
include(FindPackageHandleStandardArgs)
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
pkg_check_modules(PC_MbedTLS QUIET mbedtls mbedcrypto mbedx509)
endif()
# MbedTLS_set_soname: Set SONAME on imported library targets
macro(MbedTLS_set_soname component)
if(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin")
execute_process(
COMMAND sh -c "otool -D '${Mbed${component}_LIBRARY}' | grep -v '${Mbed${component}_LIBRARY}'"
OUTPUT_VARIABLE _output
RESULT_VARIABLE _result)
if(_result EQUAL 0 AND _output MATCHES "^@rpath/")
set_property(TARGET MbedTLS::Mbed${component} PROPERTY IMPORTED_SONAME "${_output}")
endif()
elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|FreeBSD")
execute_process(
COMMAND sh -c "${CMAKE_OBJDUMP} -p '${Mbed${component}_LIBRARY}' | grep SONAME"
OUTPUT_VARIABLE _output
RESULT_VARIABLE _result)
if(_result EQUAL 0)
string(REGEX REPLACE "[ \t]+SONAME[ \t]+([^ \t]+)" "\\1" _soname "${_output}")
set_property(TARGET MbedTLS::Mbed${component} PROPERTY IMPORTED_SONAME "${_soname}")
unset(_soname)
endif()
endif()
unset(_output)
unset(_result)
endmacro()
find_path(
MbedTLS_INCLUDE_DIR
NAMES mbedtls/ssl.h
HINTS "${PC_MbedTLS_INCLUDE_DIRS}"
PATHS /usr/include /usr/local/include
DOC "MbedTLS include directory")
if(PC_MbedTLS_VERSION VERSION_GREATER 0)
set(MbedTLS_VERSION ${PC_MbedTLS_VERSION})
elseif(EXISTS "${MbedTLS_INCLUDE_DIR}/mbedtls/build_info.h")
file(STRINGS "${MbedTLS_INCLUDE_DIR}/mbedtls/build_info.h" _VERSION_STRING
REGEX "#define[ \t]+MBEDTLS_VERSION_STRING[ \t]+.+")
string(REGEX REPLACE ".*#define[ \t]+MBEDTLS_VERSION_STRING[ \t]+\"(.+)\".*" "\\1" MbedTLS_VERSION
"${_VERSION_STRING}")
else()
if(NOT MbedTLS_FIND_QUIETLY)
message(AUTHOR_WARNING "Failed to find MbedTLS version.")
endif()
set(MbedTLS_VERSION 0.0.0)
endif()
find_library(
MbedTLS_LIBRARY
NAMES libmbedtls mbedtls
HINTS "${PC_MbedTLS_LIBRARY_DIRS}"
PATHS /usr/lib /usr/local/lib
DOC "MbedTLS location")
find_library(
MbedCrypto_LIBRARY
NAMES libmbedcrypto mbedcrypto
HINTS "${PC_MbedTLS_LIBRARY_DIRS}"
PATHS /usr/lib /usr/local/lib
DOC "MbedCrypto location")
find_library(
MbedX509_LIBRARY
NAMES libmbedx509 mbedx509
HINTS "${PC_MbedTLS_LIBRARY_DIRS}"
PATHS /usr/lib /usr/local/lib
DOC "MbedX509 location")
if(MbedTLS_LIBRARY
AND NOT MbedCrypto_LIBRARY
AND NOT MbedX509_LIBRARY)
set(CMAKE_REQUIRED_LIBRARIES "${MbedTLS_LIBRARY}")
set(CMAKE_REQUIRED_INCLUDES "${MbedTLS_INCLUDE_DIR}")
check_symbol_exists(mbedtls_x509_crt_init "mbedtls/x590_crt.h" MbedTLS_INCLUDES_X509)
check_symbol_exists(mbedtls_sha256_init "mbedtls/sha256.h" MbedTLS_INCLUDES_CRYPTO)
unset(CMAKE_REQUIRED_LIBRARIES)
unset(CMAKE_REQUIRED_INCLUDES)
endif()
if(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin|Windows")
set(MbedTLS_ERROR_REASON "Ensure that an MbedTLS distribution is provided as part of CMAKE_PREFIX_PATH.")
elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|FreeBSD")
set(MbedTLS_ERROR_REASON "Ensure that MbedTLS is installed on the system.")
endif()
if(MbedTLS_INCLUDES_X509 AND MbedTLS_INCLUDES_CRYPTO)
find_package_handle_standard_args(
MbedTLS
REQUIRED_VARS MbedTLS_LIBRARY MbedTLS_INCLUDE_DIR
VERSION_VAR MbedTLS_VERSION REASON_FAILURE_MESSAGE "${MbedTLS_ERROR_REASON}")
mark_as_advanced(MbedTLS_LIBRARY MbedTLS_INCLUDE_DIR)
list(APPEND _COMPONENTS TLS)
else()
find_package_handle_standard_args(
MbedTLS
REQUIRED_VARS MbedTLS_LIBRARY MbedCrypto_LIBRARY MbedX509_LIBRARY MbedTLS_INCLUDE_DIR
VERSION_VAR MbedTLS_VERSION REASON_FAILURE_MESSAGE "${MbedTLS_ERROR_REASON}")
mark_as_advanced(MbedTLS_LIBRARY MbedCrypto_LIBRARY MbedX509_LIBRARY MbedTLS_INCLUDE_DIR)
list(APPEND _COMPONENTS TLS Crypto X509)
endif()
unset(MbedTLS_ERROR_REASON)
if(MbedTLS_FOUND)
foreach(component IN LISTS _COMPONENTS)
if(NOT TARGET MbedTLS::Mbed${component})
if(IS_ABSOLUTE "${Mbed${component}_LIBRARY}")
add_library(MbedTLS::Mbed${component} UNKNOWN IMPORTED)
set_property(TARGET MbedTLS::Mbed${component} PROPERTY IMPORTED_LOCATION "${Mbed${component}_LIBRARY}")
else()
add_library(MbedTLS::Mbed${component} INTERFACE IMPORTED)
set_property(TARGET MbedTLS::Mbed${component} PROPERTY IMPORTED_LIBNAME "${Mbed${component}_LIBRARY}")
endif()
mbedtls_set_soname(${component})
set_target_properties(
MbedTLS::MbedTLS
PROPERTIES INTERFACE_COMPILE_OPTIONS "${PC_MbedTLS_CFLAGS_OTHER}"
INTERFACE_INCLUDE_DIRECTORIES "${MbedTLS_INCLUDE_DIR}"
VERSION ${MbedTLS_VERSION})
endif()
endforeach()
if(MbedTLS_INCLUDES_X509 AND MbedTLS_INCLUDES_CRYPTO)
set(MbedTLS_LIBRARIES ${MbedTLS_LIBRARY})
set(MBEDTLS_INCLUDE_DIRS ${MbedTLS_INCLUDE_DIR})
else()
set(MbedTLS_LIBRARIES ${MbedTLS_LIBRARY} ${MbedCrypto_LIBRARY} ${MbedX509_LIBRARY})
set_property(TARGET MbedTLS::MbedTLS PROPERTY INTERFACE_LINK_LIBRARIES MbedTLS::MbedCrypto MbedTLS::MbedX509)
set(MBEDTLS_INCLUDE_DIRS ${MbedTLS_INCLUDE_DIR})
endif()
endif()
include(FeatureSummary)
set_package_properties(
MbedTLS PROPERTIES
URL "https://www.trustedfirmware.org/projects/mbed-tls"
DESCRIPTION
"A C library implementing cryptographic primitives, X.509 certificate manipulation, and the SSL/TLS and DTLS protocols."
)