# - Try to find GCrypt

# Once done this will define

#

#  GCRYPT_FOUND - system has GCrypt

#  GCRYPT_INCLUDE_DIRS - the GCrypt include directory

#  GCRYPT_LIBRARIES - Link these to use GCrypt

#  GCRYPT_DEFINITIONS - Compiler switches required for using GCrypt

#

#=============================================================================

#  Copyright (c) 2009-2012 Andreas Schneider <asn@cryptomilk.org>

#

#  Distributed under the OSI-approved BSD License (the "License");

#  see accompanying file Copyright.txt for details.

#

#  This software is distributed WITHOUT ANY WARRANTY; without even the

#  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

#  See the License for more information.

#=============================================================================

#

set(_GCRYPT_ROOT_HINTS

    $ENV{GCRYTPT_ROOT_DIR}

    ${GCRYPT_ROOT_DIR})

set(_GCRYPT_ROOT_PATHS

    "$ENV{PROGRAMFILES}/libgcrypt")

set(_GCRYPT_ROOT_HINTS_AND_PATHS

    HINTS ${_GCRYPT_ROOT_HINTS}

    PATHS ${_GCRYPT_ROOT_PATHS})

find_path(GCRYPT_INCLUDE_DIR

    NAMES

        gcrypt.h

    HINTS

        ${_GCRYPT_ROOT_HINTS_AND_PATHS}

    PATH_SUFFIXES

        include

)

find_library(GCRYPT_LIBRARY

    NAMES

        gcrypt

        gcrypt11

        libgcrypt-11

    HINTS

        ${_GCRYPT_ROOT_HINTS_AND_PATHS}

    PATH_SUFFIXES

        lib

)

find_library(GCRYPT_ERROR_LIBRARY

    NAMES

        gpg-error

        libgpg-error-0

        libgpg-error6-0

    HINTS

        ${_GCRYPT_ROOT_HINTS_AND_PATHS}

)

set(GCRYPT_LIBRARIES ${GCRYPT_LIBRARY}  ${GCRYPT_ERROR_LIBRARY})

if (GCRYPT_INCLUDE_DIR)

    file(STRINGS "${GCRYPT_INCLUDE_DIR}/gcrypt.h" _gcrypt_version_str REGEX "^#define GCRYPT_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]")

    string(REGEX REPLACE "^.*GCRYPT_VERSION.*([0-9]+\\.[0-9]+\\.[0-9]+).*" "\\1" GCRYPT_VERSION "${_gcrypt_version_str}")

endif (GCRYPT_INCLUDE_DIR)

include(FindPackageHandleStandardArgs)

if (GCRYPT_VERSION)

    find_package_handle_standard_args(GCrypt

        REQUIRED_VARS

            GCRYPT_INCLUDE_DIR

            GCRYPT_LIBRARIES

        VERSION_VAR

            GCRYPT_VERSION

        FAIL_MESSAGE

            "Could NOT find GCrypt, try to set the path to GCrypt root folder in the system variable GCRYPT_ROOT_DIR"

    )

else (GCRYPT_VERSION)

    find_package_handle_standard_args(GCrypt

        "Could NOT find GCrypt, try to set the path to GCrypt root folder in the system variable GCRYPT_ROOT_DIR"

        GCRYPT_INCLUDE_DIR

        GCRYPT_LIBRARIES)

endif (GCRYPT_VERSION)

# show the GCRYPT_INCLUDE_DIRS and GCRYPT_LIBRARIES variables only in the advanced view

mark_as_advanced(GCRYPT_INCLUDE_DIR GCRYPT_LIBRARIES)