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#[=======================================================================[.rst:
FindNettle
----------
Find the Nettle library.
Imported targets
^^^^^^^^^^^^^^^^
This module defines the following :prop_tgt:`IMPORTED` targets:
``Nettle::Nettle``
The Nettle library, if found.
``Nettle::Hogweed``
The Hogweed library, if found.
Result variables
^^^^^^^^^^^^^^^^
This module will set the following variables in your project:
``Nettle_FOUND``
If false, do not try to use Nettle.
``NETTLE_INCLUDE_DIR``
where to find Nettle headers.
``NETTLE_LIBRARIES``
the libraries needed to use Nettle.
``NETTLE_VERSION``
the version of the Nettle library found
#]=======================================================================]
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
pkg_check_modules(PkgNettle IMPORTED_TARGET GLOBAL nettle)
pkg_check_modules(PkgHogweed IMPORTED_TARGET GLOBAL QUIET hogweed)
endif()
if(PkgNettle_FOUND AND PkHogweed_FOUND)
set(NETTLE_INCLUDE_DIR ${PkgNettle_INCLUDE_DIRS} ${PkgHogweed_INCLUDE_DIRS} CACHE FILEPATH "Nettle include path")
set(NETTLE_LIBRARIES ${PkgNettle_LIBRARIES} ${PkgHogweed_LIBRARIES} CACHE STRING "Nettle libraries")
set(NETTLE_VERSION ${PkgNettle_VERSION})
add_library(Nettle::Nettle ALIAS PkgConfig::PkgNettle)
add_library(Nettle::Hogweed ALIAS PkgConfig::PkgHogweed)
set(Nettle_FOUND ON)
else()
find_path(NETTLE_INCLUDE_DIR nettle/version.h
HINTS
"${NETTLE_DIR}"
"${NETTLE_DIR}/include"
)
find_library(NETTLE_LIBRARY NAMES nettle libnettle
HINTS
"${NETTLE_DIR}"
"${NETTLE_DIR}/lib"
)
find_library(HOGWEED_LIBRARY NAMES hogweed libhogweed
HINTS
"${NETTLE_DIR}"
"${NETTLE_DIR}/lib"
)
set(_NETTLE_LIBRARIES ${NETTLE_LIBRARY} ${HOGWEED_LIBRARY})
# May need gmp library on Unix.
if (UNIX)
find_library(NETTLE_GMP_LIBRARY gmp)
endif ()
if (NETTLE_GMP_LIBRARY)
list(APPEND _NETTLE_LIBRARIES "${NETTLE_GMP_LIBRARY}")
endif ()
set(NETTLE_LIBRARIES ${_NETTLE_LIBRARIES} CACHE STRING "nettle libraries")
if (NETTLE_INCLUDE_DIR AND NETTLE_LIBRARY AND HOGWEED_LIBRARY)
if (NOT TARGET Nettle::Nettle)
add_library(Nettle::Nettle UNKNOWN IMPORTED)
set_target_properties(Nettle::Nettle PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${NETTLE_INCLUDE_DIR}"
INTERFACE_LINK_LIBRARIES "${NETTLE_LIBRARIES}"
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${NETTLE_LIBRARY}"
)
endif ()
if (NOT TARGET Nettle::Hogweed)
add_library(Nettle::Hogweed UNKNOWN IMPORTED)
set_target_properties(Nettle::Hogweed PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${NETTLE_INCLUDE_DIR}"
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${HOGWEED_LIBRARY}"
)
endif ()
if (NOT NETTLE_VERSION AND NETTLE_INCLUDE_DIR)
file(STRINGS "${NETTLE_INCLUDE_DIR}/nettle/version.h" NETTLE_VER_H REGEX "^#define NETTLE_VERSION_(MAJOR|MINOR) ")
string(REGEX REPLACE "^.*_MAJOR ([0-9]+).*_MINOR ([0-9]+).*$" "\\1.\\2" NETTLE_VERSION "${NETTLE_VER_H}")
endif ()
endif()
list(APPEND NETTLE_LIBRARIES "${NETTLE_LIBRARY}" "${HOGWEED_LIBRARY}")
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Nettle
REQUIRED_VARS NETTLE_LIBRARIES NETTLE_INCLUDE_DIR
VERSION_VAR NETTLE_VERSION
)
endif()
mark_as_advanced(NETTLE_INCLUDE_DIR NETTLE_LIBRARIES NETTLE_LIBRARY HOGWEED_LIBRARY NETTLE_GMP_LIBRARY)
|
