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# Copyright 2014 Nicolás Alvarez <nicolas.alvarez@gmail.com>
# Copyright 2016, 2021 Igalia S.L
#
# 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.
#[=======================================================================[.rst:
FindGcrypt
----------
Find libgcrypt headers and libraries.
Imported Targets
^^^^^^^^^^^^^^^^
``LibGcrypt::LibGcrypt``
The libgcrypt library, if found.
#]=======================================================================]
find_package(PkgConfig QUIET)
find_program(LIBGCRYPTCONFIG_SCRIPT NAMES libgcrypt-config)
if (PkgConfig_FOUND)
# XXX: The libgcrypt.pc file does not list gpg-error as a dependency,
# resulting in linking errors; search for the latter as well.
pkg_check_modules(PC_GCRYPT QUIET libgcrypt)
pkg_check_modules(PC_GPGERROR QUIET gpg-error)
set(LibGcrypt_COMPILE_OPTIONS ${PC_GCRYPT_CFLAGS_OTHER} ${PC_GPGERROR_CFLAGS_OTHER})
set(LibGcrypt_VERSION ${PC_GCRYPT_VERSION})
endif ()
if (LIBGCRYPTCONFIG_SCRIPT AND NOT PC_GCRYPT_FOUND)
execute_process(
COMMAND "${LIBGCRYPTCONFIG_SCRIPT}" --prefix
RESULT_VARIABLE CONFIGSCRIPT_RESULT
OUTPUT_VARIABLE LIBGCRYPT_PREFIX
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if (CONFIGSCRIPT_RESULT EQUAL 0)
set(LIBGCRYPT_SCRIPT_LIB_HINT "${LIBGCRYPT_PREFIX}/lib")
set(LIBGCRYPT_SCRIPT_INCLUDE_HINT "${LIBGCRYPT_PREFIX}/include")
endif ()
execute_process(
COMMAND "${LIBGCRYPTCONFIG_SCRIPT}" --cflags
RESULT_VARIABLE CONFIGSCRIPT_RESULT
OUTPUT_VARIABLE CONFIGSCRIPT_VALUE
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if (CONFIGSCRIPT_RESULT EQUAL 0)
set(LibGcrypt_COMPILE_OPTIONS ${CONFIGSCRIPT_VALUE})
endif ()
execute_process(
COMMAND "${LIBGCRYPTCONFIG_SCRIPT}" --version
RESULT_VARIABLE CONFIGSCRIPT_RESULT
OUTPUT_VARIABLE CONFIGSCRIPT_VALUE
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if (CONFIGSCRIPT_RESULT EQUAL 0)
string(REGEX MATCH "^([0-9]+\.[0-9]+\.[0-9]+)" LibGcrypt_VERSION "${CONFIGSCRIPT_VALUE}")
endif ()
endif ()
find_path(LibGcrypt_GpgError_INCLUDE_DIR
NAMES gpg-error.h
HINTS ${PC_GPGERROR_INCLUDEDIR} ${PC_GPGERROR_INCLUDE_DIRS}
${PC_GCRYPT_INCLUDEDIR} ${PC_GCRYPT_INCLUDE_DIRS}
${LIBGCRYPT_SCRIPT_INCLUDE_HINT} ${LibGcrypt_INCLUDE_DIR}
)
find_library(LibGcrypt_GpgError_LIBRARY
NAMES ${LibGcrypt_GpgError_NAMES} gpg-error libgpg-error
HINTS ${PC_GPGERROR_LIBDIR} ${PC_GPGERROR_LIBRARY_DIRS}
${PC_GCRYPT_LIBDIR} ${PC_GCRYPT_LIBRARY_DIRS} ${LIBGCRYPT_SCRIPT_LIB_HINT}
)
find_path(LibGcrypt_INCLUDE_DIR
NAMES gcrypt.h
HINTS ${PC_GCRYPT_INCLUDEDIR} ${PC_GCRYPT_INCLUDE_DIRS}
${LIBGCRYPT_SCRIPT_INCLUDE_HINT} ${LibGcrypt_INCLUDE_DIR}
)
find_library(LibGcrypt_LIBRARY
NAMES ${LibGcrypt_NAMES} gcrypt libgcrypt
HINTS ${PC_GCRYPT_LIBDIR} ${PC_GCRYPT_LIBRARY_DIRS} ${LIBGCRYPT_SCRIPT_LIB_HINT}
)
if (LibGcrypt_INCLUDE_DIR AND NOT LibGcrypt_VERSION)
file(STRINGS ${LibGcrypt_INCLUDE_DIR}/gcrypt.h GCRYPT_H REGEX "^#define GCRYPT_VERSION ")
string(REGEX REPLACE "^#define GCRYPT_VERSION \"([0-9.]\+)[^\"]*\".*$" "\\1" LibGcrypt_VERSION "${GCRYPT_H}")
endif ()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(LibGcrypt
FOUND_VAR LibGcrypt_FOUND
REQUIRED_VARS LibGcrypt_LIBRARY LibGcrypt_INCLUDE_DIR
LibGcrypt_GpgError_LIBRARY LibGcrypt_GpgError_INCLUDE_DIR
VERSION_VAR LibGcrypt_VERSION
)
if (LibGcrypt_GpgError_LIBRARY AND NOT TARGET LibGcrypt::GpgError)
add_library(LibGcrypt::GpgError UNKNOWN IMPORTED GLOBAL)
set_target_properties(LibGcrypt::GpgError PROPERTIES
IMPORTED_LOCATION "${LibGcrypt_GpgError_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${LibGcrypt_GpgError_INCLUDE_DIR}"
)
endif ()
if (LibGcrypt_LIBRARY AND NOT TARGET LibGcrypt::LibGcrypt)
add_library(LibGcrypt::LibGcrypt UNKNOWN IMPORTED GLOBAL)
set_target_properties(LibGcrypt::LibGcrypt PROPERTIES
IMPORTED_LOCATION "${LibGcrypt_LIBRARY}"
INTERFACE_COMPILE_OPTIONS "${LibGcrypt_COMPILE_OPTIONS}"
INTERFACE_INCLUDE_DIRECTORIES "${LibGcrypt_INCLUDE_DIR}"
)
target_link_libraries(LibGcrypt::LibGcrypt INTERFACE LibGcrypt::GpgError)
endif ()
mark_as_advanced(LibGcrypt_INCLUDE_DIR LibGcrypt_LIBRARY
LibGcrypt_GpgError_INCLUDE_DIR LibGcrypt_GpgError_LIBRARY)
if (LibGcrypt_FOUND)
set(LibGcrypt_LIBRARIES ${LibGcrypt_LIBRARY} ${LibGcrypt_GpgError_LIBRARY})
set(LibGcrypt_INCLUDE_DIRS ${LibGcrypt_INCLUDE_DIR} ${LibGcrypt_GpgError_INCLUDE_DIR})
endif ()
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