# Copyright (C) 2020 Dieter Baron and Thomas Klausner
#
# The authors can be contacted at <[email protected]>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# 3. The names of the authors may not be used to endorse or promote
# products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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#[=======================================================================[.rst:
FindMbedTLS
-------
Finds the Mbed TLS library.
Imported Targets
^^^^^^^^^^^^^^^^
This module provides the following imported targets, if found:
``MbedTLS::MbedTLS``
The Mbed TLS library
Result Variables
^^^^^^^^^^^^^^^^
This will define the following variables:
``MbedTLS_FOUND``
True if the system has the Mbed TLS library.
``MbedTLS_VERSION``
The version of the Mbed TLS library which was found.
``MbedTLS_INCLUDE_DIRS``
Include directories needed to use Mbed TLS.
``MbedTLS_LIBRARIES``
Libraries needed to link to Mbed TLS.
Cache Variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``MbedTLS_INCLUDE_DIR``
The directory containing ``mbedtls/aes.h``.
``MbedTLS_LIBRARY``
The path to the Mbed TLS library.
#]=======================================================================]
# I'm not aware of a pkg-config file for mbedtls as of 2020/07/08.
#find_package(PkgConfig)
#pkg_check_modules(PC_MbedTLS QUIET mbedtls)
find_path(MbedTLS_INCLUDE_DIR
NAMES mbedtls/aes.h
# PATHS ${PC_MbedTLS_INCLUDE_DIRS}
)
find_library(MbedTLS_LIBRARY
NAMES mbedcrypto
# PATHS ${PC_MbedTLS_LIBRARY_DIRS}
)
# Extract version information from the header file
if(MbedTLS_INCLUDE_DIR)
if(EXISTS ${MbedTLS_INCLUDE_DIR}/mbedtls/version.h)
file(STRINGS ${MbedTLS_INCLUDE_DIR}/mbedtls/version.h _ver_line
REGEX "^#define MBEDTLS_VERSION_STRING *\"[0-9]+\\.[0-9]+\\.[0-9]+\""
LIMIT_COUNT 1)
string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+"
MbedTLS_VERSION "${_ver_line}")
unset(_ver_line)
else()
if(PC_MbedTLS_VERSION)
set(MbedTLS_VERSION ${PC_MbedTLS_VERSION})
else()
# version unknown
set(MbedTLS_VERSION "0.0")
endif()
endif()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(MbedTLS
FOUND_VAR MbedTLS_FOUND
REQUIRED_VARS
MbedTLS_LIBRARY
MbedTLS_INCLUDE_DIR
VERSION_VAR MbedTLS_VERSION
)
if(MbedTLS_FOUND)
set(MbedTLS_LIBRARIES ${MbedTLS_LIBRARY})
set(MbedTLS_INCLUDE_DIRS ${MbedTLS_INCLUDE_DIR})
# set(MbedTLS_DEFINITIONS ${PC_MbedTLS_CFLAGS_OTHER})
endif()
if(MbedTLS_FOUND AND NOT TARGET MbedTLS::MbedTLS)
add_library(MbedTLS::MbedTLS UNKNOWN IMPORTED)
set_target_properties(MbedTLS::MbedTLS PROPERTIES
IMPORTED_LOCATION "${MbedTLS_LIBRARY}"
# INTERFACE_COMPILE_OPTIONS "${PC_MbedTLS_CFLAGS_OTHER}"
INTERFACE_INCLUDE_DIRECTORIES "${MbedTLS_INCLUDE_DIR}"
)
endif()
mark_as_advanced(
MbedTLS_INCLUDE_DIR
MbedTLS_LIBRARY
)
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