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# - Try to find LibSSH
# Once done this will define
#
# LIBSSH_FOUND - system has LibSSH
# LIBSSH_INCLUDE_DIRS - the LibSSH include directory
# LIBSSH_LIBRARIES - Link these to use LibSSH
# LIBSSH_DEFINITIONS - Compiler switches required for using LibSSH
#
# Copyright (c) 2009-2014 Andreas Schneider <asn@cryptomilk.org>
#
# 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. Neither the name of the University nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
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}
)
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)
# show the LIBSSH_INCLUDE_DIRS and LIBSSH_LIBRARIES variables only in the advanced view
mark_as_advanced(LIBSSH_INCLUDE_DIR LIBSSH_LIBRARIES)
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