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CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
# XXX: Copied from CMake, but includes vtkDetectLibraryType.
# See https://gitlab.kitware.com/cmake/cmake/issues/18564
#[=======================================================================[.rst:
FindEXPAT
---------
Find the native Expat headers and library.
Imported Targets
^^^^^^^^^^^^^^^^
This module defines the following :prop_tgt:`IMPORTED` targets:
``EXPAT::EXPAT``
The Expat ``expat`` library, if found.
Result Variables
^^^^^^^^^^^^^^^^
This module will set the following variables in your project:
``EXPAT_INCLUDE_DIRS``
where to find expat.h, etc.
``EXPAT_LIBRARIES``
the libraries to link against to use Expat.
``EXPAT_FOUND``
true if the Expat headers and libraries were found.
#]=======================================================================]
find_package(PkgConfig QUIET)
pkg_check_modules(PC_EXPAT QUIET expat)
# Look for the header file.
find_path(EXPAT_INCLUDE_DIR NAMES expat.h HINTS ${PC_EXPAT_INCLUDE_DIRS})
# Look for the library.
find_library(EXPAT_LIBRARY NAMES expat libexpat HINTS ${PC_EXPAT_LIBRARY_DIRS})
if (EXPAT_INCLUDE_DIR AND EXISTS "${EXPAT_INCLUDE_DIR}/expat.h")
file(STRINGS "${EXPAT_INCLUDE_DIR}/expat.h" expat_version_str
REGEX "^#[\t ]*define[\t ]+XML_(MAJOR|MINOR|MICRO)_VERSION[\t ]+[0-9]+$")
unset(EXPAT_VERSION_STRING)
foreach(VPART MAJOR MINOR MICRO)
foreach(VLINE ${expat_version_str})
if(VLINE MATCHES "^#[\t ]*define[\t ]+XML_${VPART}_VERSION[\t ]+([0-9]+)$")
set(EXPAT_VERSION_PART "${CMAKE_MATCH_1}")
if(EXPAT_VERSION_STRING)
string(APPEND EXPAT_VERSION_STRING ".${EXPAT_VERSION_PART}")
else()
set(EXPAT_VERSION_STRING "${EXPAT_VERSION_PART}")
endif()
endif()
endforeach()
endforeach()
endif ()
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(EXPAT
REQUIRED_VARS EXPAT_LIBRARY EXPAT_INCLUDE_DIR
VERSION_VAR EXPAT_VERSION_STRING)
# Copy the results to the output variables and target.
if(EXPAT_FOUND)
set(EXPAT_LIBRARIES ${EXPAT_LIBRARY})
set(EXPAT_INCLUDE_DIRS ${EXPAT_INCLUDE_DIR})
if(NOT TARGET EXPAT::EXPAT)
include(vtkDetectLibraryType)
vtk_detect_library_type(expat_library_type
PATH "${EXPAT_LIBRARY}")
add_library(EXPAT::EXPAT "${expat_library_type}" IMPORTED)
unset(expat_library_type)
set_target_properties(EXPAT::EXPAT PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${EXPAT_LIBRARY}"
IMPORTED_IMPLIB "${EXPAT_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${EXPAT_INCLUDE_DIRS}")
endif()
endif()
mark_as_advanced(EXPAT_INCLUDE_DIR EXPAT_LIBRARY)