getdns/cmake/modules/FindGnuTLS.cmake

86 lines
2.4 KiB
CMake

#[=======================================================================[.rst:
FindGnuTLS
----------
Find the GnuTLS library.
Imported targets
^^^^^^^^^^^^^^^^
This module defines the following :prop_tgt:`IMPORTED` targets:
``GnuTLS::GnuTLS``
The GnuTLS library, if found.
``GnuTLS::Dane``
The GnuTLS DANE library, if found.
Result variables
^^^^^^^^^^^^^^^^
This module will set the following variables in your project:
``GnuTLS_FOUND``
If false, do not try to use GnuTLS.
``GNUTLS_INCLUDE_DIR``
where to find GnuTLS headers.
``GNUTLS_LIBRARIES``
the libraries needed to use GnuTLS.
``GNUTLS_VERSION``
the version of the GnuTLS library found
#]=======================================================================]
find_path(GNUTLS_INCLUDE_DIR gnutls/gnutls.h
HINTS
"${GNUTLS_DIR}"
"${GNUTLS_DIR}/include"
)
find_library(GNUTLS_LIBRARY NAMES gnutls libgnutls
HINTS
"${GNUTLS_DIR}"
"${GNUTLS_DIR}/lib"
)
find_library(GNUTLS_DANE_LIBRARY NAMES gnutls-dane libgnutls-dane
HINTS
"${GNUTLS_DIR}"
"${GNUTLS_DIR}/lib"
)
set(GNUTLS_LIBRARIES "")
if (GNUTLS_INCLUDE_DIR AND GNUTLS_LIBRARY AND GNUTLS_DANE_LIBRARY)
if (NOT TARGET GnuTLS::GnuTLS)
add_library(GnuTLS::GnuTLS UNKNOWN IMPORTED)
set_target_properties(GnuTLS::GnuTLS PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${GNUTLS_INCLUDE_DIR}"
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${GNUTLS_LIBRARY}"
)
endif ()
if (NOT TARGET GnuTLS::Dane)
add_library(GnuTLS::Dane UNKNOWN IMPORTED)
set_target_properties(GnuTLS::Dane PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${GNUTLS_INCLUDE_DIR}"
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${GNUTLS_DANE_LIBRARY}"
)
endif ()
if (NOT GNUTLS_VERSION AND GNUTLS_INCLUDE_DIR)
file(STRINGS "${GNUTLS_INCLUDE_DIR}/gnutls/gnutls.h" GNUTLS_VER_H REGEX "^#define GNUTLS_VERSION_(MAJOR|MINOR|PATCH) ")
string(REGEX REPLACE "^.*_MAJOR ([0-9]+).*_MINOR ([0-9]+).*_PATCH ([0-9]+).*$" "\\1.\\2.\\3c" GNUTLS_VERSION "${GNUTLS_VER_H}")
endif ()
endif()
list(APPEND GNUTLS_LIBRARIES "${GNUTLS_LIBRARY}" "${GNUTLS_DANE_LIBRARY}")
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GnuTLS
REQUIRED_VARS GNUTLS_LIBRARIES GNUTLS_INCLUDE_DIR
VERSION_VAR GNUTLS_VERSION
)
mark_as_advanced(GNUTLS_INCLUDE_DIR GNUTLS_LIBRARIES GNUTLS_LIBRARY GNUTLS_DANE_LIBRARY)