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# - Try to find libssh
# Once done this will define
#
# LIBSSH_FOUND - system has libssh
# LIBSSH_INCLUDE_DIR - the libssh include directory
# LIBSSH_LIBRARIES - Link these to use libssh
# LIBSSH_DEFINITIONS - Compiler switches required for using libssh
# SPDX-License-Identifier: BSD-3-Clause
# SPDX-FileCopyrightText: 2009-2014 Andreas Schneider <asn@cryptomilk.org>
# SPDX-FileCopyrightText: 2018 Harald Sitter <sitter@kde.org>
# Define an imported target to have compatibility with newer libssh and so
# we have a single target to use regardless of the code path taken in the
# finder and the actual libssh version defining the target.
macro(libssh_ensure_imported_target)
if(NOT TARGET ssh)
add_library(ssh SHARED IMPORTED)
set_target_properties(ssh PROPERTIES
IMPORTED_LOCATION "${LIBSSH_LIBRARIES}"
INTERFACE_INCLUDE_DIRECTORIES "${LIBSSH_INCLUDE_DIR}"
)
endif()
endmacro()
# We prefer the config, but on Ubuntu 18.04 LTS (and to some extent later
# versions it seems) they've not packaged the config properly. So, go for the
# config by default and fall back to manual lookup iff the config was not found.
# https://bugs.kde.org/show_bug.cgi?id=400291
# https://bugs.launchpad.net/ubuntu/+source/libssh/+bug/1800135
find_package(libssh ${libssh_FIND_VERSION} NO_MODULE QUIET)
if(libssh_FOUND)
# Certain versions with config may not have the target, so make sure it's
# defined.
libssh_ensure_imported_target()
return()
endif()
find_path(LIBSSH_INCLUDE_DIR
NAMES
libssh/libssh.h
PATHS
/usr/include
/usr/local/include
/opt/local/include
/sw/include
${CMAKE_INCLUDE_PATH}
${CMAKE_INSTALL_PREFIX}/include
)
find_library(SSH_LIBRARY
NAMES
ssh
libssh
PATHS
/usr/lib
/usr/local/lib
/opt/local/lib
/sw/lib
${CMAKE_LIBRARY_PATH}
${CMAKE_INSTALL_PREFIX}/lib
)
set(LIBSSH_LIBRARIES
${LIBSSH_LIBRARIES}
${SSH_LIBRARY}
)
message("LIB: ${LIBSSH_LIBRARIES}; INC: ${LIBSSH_INCLUDE_DIR};")
if (LIBSSH_INCLUDE_DIR AND libssh_FIND_VERSION)
file(STRINGS ${LIBSSH_INCLUDE_DIR}/libssh/libssh.h LIBSSH_VERSION_MAJOR
REGEX "#define[ ]+LIBSSH_VERSION_MAJOR[ ]+[0-9]+")
# Older versions of libssh like libssh-0.2 have LIBSSH_VERSION but not LIBSSH_VERSION_MAJOR
if (LIBSSH_VERSION_MAJOR)
string(REGEX MATCH "[0-9]+" LIBSSH_VERSION_MAJOR ${LIBSSH_VERSION_MAJOR})
file(STRINGS ${LIBSSH_INCLUDE_DIR}/libssh/libssh.h LIBSSH_VERSION_MINOR
REGEX "#define[ ]+LIBSSH_VERSION_MINOR[ ]+[0-9]+")
string(REGEX MATCH "[0-9]+" LIBSSH_VERSION_MINOR ${LIBSSH_VERSION_MINOR})
file(STRINGS ${LIBSSH_INCLUDE_DIR}/libssh/libssh.h LIBSSH_VERSION_PATCH
REGEX "#define[ ]+LIBSSH_VERSION_MICRO[ ]+[0-9]+")
string(REGEX MATCH "[0-9]+" LIBSSH_VERSION_PATCH ${LIBSSH_VERSION_PATCH})
set(LIBSSH_VERSION ${LIBSSH_VERSION_MAJOR}.${LIBSSH_VERSION_MINOR}.${LIBSSH_VERSION_PATCH})
else (LIBSSH_VERSION_MAJOR)
message(STATUS "LIBSSH_VERSION_MAJOR not found in ${LIBSSH_INCLUDE_DIR}/libssh/libssh.h, assuming libssh is too old")
set(LIBSSH_FOUND FALSE)
endif (LIBSSH_VERSION_MAJOR)
endif (LIBSSH_INCLUDE_DIR AND libssh_FIND_VERSION)
# If the version is too old, but libs and includes are set,
# find_package_handle_standard_args will set LIBSSH_FOUND to TRUE again,
# so we need this if() here.
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(libssh
FOUND_VAR
LIBSSH_FOUND
REQUIRED_VARS
LIBSSH_LIBRARIES
LIBSSH_INCLUDE_DIR
VERSION_VAR
LIBSSH_VERSION)
libssh_ensure_imported_target()
# show the LIBSSH_INCLUDE_DIR and LIBSSH_LIBRARIES variables only in the advanced view
mark_as_advanced(LIBSSH_INCLUDE_DIR LIBSSH_LIBRARIES)
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