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# - Try to find the Gcrypt library
# Once run this will define
#
# LIBGCRYPT_FOUND - set if the system has the gcrypt library
# LIBGCRYPT_CFLAGS - the required gcrypt compilation flags
# LIBGCRYPT_LIBRARIES - the linker libraries needed to use the gcrypt library
# LIBGCRYPT_INCLUDE_DIR
#
# libgcrypt is moving to pkg-config, but earlier version don't have it
#
# Copyright (c) 2006 Brad Hards <bradh@kde.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 copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
if(NOT LibGcrypt_FIND_VERSION)
set(LibGcrypt_FIND_VERSION "1.6.1")
endif()
#search in typical paths for libgcrypt-config
FIND_PROGRAM(LIBGCRYPTCONFIG_EXECUTABLE NAMES libgcrypt-config)
#reset variables
set(LIBGCRYPT_LIBRARIES)
set(LIBGCRYPT_CFLAGS)
# if libgcrypt-config has been found
IF(LIBGCRYPTCONFIG_EXECUTABLE)
# workaround for MinGW/MSYS
# CMake can't starts shell scripts on windows so it need to use sh.exe
EXECUTE_PROCESS(COMMAND sh ${LIBGCRYPTCONFIG_EXECUTABLE} --libs RESULT_VARIABLE _return_VALUE OUTPUT_VARIABLE LIBGCRYPT_LIBRARIES OUTPUT_STRIP_TRAILING_WHITESPACE)
EXECUTE_PROCESS(COMMAND sh ${LIBGCRYPTCONFIG_EXECUTABLE} --cflags RESULT_VARIABLE _return_VALUE OUTPUT_VARIABLE LIBGCRYPT_CFLAGS OUTPUT_STRIP_TRAILING_WHITESPACE)
EXECUTE_PROCESS(COMMAND sh ${LIBGCRYPTCONFIG_EXECUTABLE} --version RESULT_VARIABLE _return_VALUEVersion OUTPUT_VARIABLE LIBGCRYPT_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
IF(NOT LIBGCRYPT_CFLAGS AND NOT _return_VALUE)
SET(LIBGCRYPT_CFLAGS " ")
ENDIF(NOT LIBGCRYPT_CFLAGS AND NOT _return_VALUE)
IF(LIBGCRYPT_LIBRARIES AND LIBGCRYPT_CFLAGS)
SET(LIBGCRYPT_FOUND TRUE)
ENDIF(LIBGCRYPT_LIBRARIES AND LIBGCRYPT_CFLAGS)
if(LIBGCRYPT_VERSION VERSION_LESS ${LibGcrypt_FIND_VERSION})
message(WARNING "libgcrypt found but version is less than required, Found ${LIBGCRYPT_VERSION} Required ${LibGcrypt_FIND_VERSION}")
SET(LIBGCRYPT_FOUND FALSE)
endif()
ENDIF(LIBGCRYPTCONFIG_EXECUTABLE)
FIND_PATH(LIBGCRYPT_INCLUDE_DIR gcrypt.h
HINTS
"${LIBGCRYPT_HINTS}"
PATH_SUFFIXES
include
)
if (LIBGCRYPT_FOUND)
if (NOT LibGcrypt_FIND_QUIETLY)
message(STATUS "Found libgcrypt: ${LIBGCRYPT_LIBRARIES}")
endif (NOT LibGcrypt_FIND_QUIETLY)
else (LIBGCRYPT_FOUND)
if (LibGcrypt_FIND_REQUIRED)
message(WARNING "Could not find libgcrypt libraries")
endif (LibGcrypt_FIND_REQUIRED)
endif (LIBGCRYPT_FOUND)
MARK_AS_ADVANCED(LIBGCRYPT_CFLAGS LIBGCRYPT_LIBRARIES LIBGCRYPT_INCLUDE_DIR)
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