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COPASI / data /CMakeModules /FindEXPAT.cmake

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# Copyright (C) 2019 - 2022 by Pedro Mendes, Rector and Visitors of the 
# University of Virginia, University of Heidelberg, and University 
# of Connecticut School of Medicine. 
# All rights reserved. 

# Copyright (C) 2017 - 2018 by Pedro Mendes, Virginia Tech Intellectual 
# Properties, Inc., University of Heidelberg, and University of 
# of Connecticut School of Medicine. 
# All rights reserved. 

# Copyright (C) 2013 - 2016 by Pedro Mendes, Virginia Tech Intellectual 
# Properties, Inc., University of Heidelberg, and The University 
# of Manchester. 
# All rights reserved. 

# - Try to find the Expat XML parsing library 

# Once done this will define
#
#  EXPAT_FOUND       - system has Expat
#  EXPAT_LIBRARY   - Link these to use Expat
#  EXPAT_INCLUDE_DIR - Include directory for using Expat
#  EXPAT_DEFINITIONS - Compiler switches required for using Expat
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

include(CheckCSourceCompiles)

string(TOUPPER ${PROJECT_NAME} _UPPER_PROJECT_NAME)
set(_PROJECT_DEPENDENCY_DIR ${_UPPER_PROJECT_NAME}_DEPENDENCY_DIR)

find_path(EXPAT_INCLUDE_DIR expat.h
    PATHS $ENV{EXPAT_DIR}/include
            $ENV{EXPAT_DIR}
            ${${_PROJECT_DEPENDENCY_DIR}}/include
            CMAKE_FIND_ROOT_PATH_BOTH
            NO_DEFAULT_PATH)

if (NOT EXPAT_INCLUDE_DIR)
find_path(EXPAT_INCLUDE_DIR expat.h
    PATHS $ENV{EXPAT_DIR}/include
          $ENV{EXPAT_DIR}
          ${${_PROJECT_DEPENDENCY_DIR}}/include
          ~/Library/Frameworks
          /Library/Frameworks
          /sw/include        # Fink
          /opt/local/include # MacPorts
          /opt/csw/include   # Blastwave
          /opt/include
          /usr/freeware/include
          CMAKE_FIND_ROOT_PATH_BOTH
          NO_DEFAULT_PATH)
endif ()

if (NOT EXPAT_INCLUDE_DIR)
    find_path(EXPAT_INCLUDE_DIR expat.h)
endif ()

find_library(EXPAT_LIBRARY 
    NAMES libexpat expat
    PATHS $ENV{EXPAT_DIR}/${CMAKE_INSTALL_LIBDIR}
          $ENV{EXPAT_DIR}/lib-dbg
          $ENV{EXPAT_DIR}
          ${${_PROJECT_DEPENDENCY_DIR}}/${CMAKE_INSTALL_LIBDIR}
          ${${_PROJECT_DEPENDENCY_DIR}}/lib64
          ${${_PROJECT_DEPENDENCY_DIR}}/lib
          ${${_PROJECT_DEPENDENCY_DIR}}
          CMAKE_FIND_ROOT_PATH_BOTH
          NO_DEFAULT_PATH)

if (NOT EXPAT_LIBRARY)
find_library(EXPAT_LIBRARY 
    NAMES libexpat expat
    PATHS $ENV{EXPAT_DIR}/${CMAKE_INSTALL_LIBDIR}
          $ENV{EXPAT_DIR}/lib-dbg
          $ENV{EXPAT_DIR}
          ${${_PROJECT_DEPENDENCY_DIR}}/${CMAKE_INSTALL_LIBDIR}
          ${${_PROJECT_DEPENDENCY_DIR}}
          ~/Library/Frameworks
          /Library/Frameworks
          /sw/lib        # Fink
          /opt/local/lib # MacPorts
          /opt/csw/lib   # Blastwave
          /opt/lib
          /usr/freeware/lib64
          CMAKE_FIND_ROOT_PATH_BOTH
          NO_DEFAULT_PATH)
endif()

if (NOT EXPAT_LIBRARY)
    find_library(EXPAT_LIBRARY NAMES libexpat expat)
endif ()

mark_as_advanced(EXPAT_INCLUDE_DIR EXPAT_LIBRARY)


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 CACHE)
set(_STARTED FALSE)
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(_STARTED)
                string(APPEND EXPAT_VERSION ".${EXPAT_VERSION_PART}")
            else()
                set(EXPAT_VERSION "${EXPAT_VERSION_PART}")
                set(_STARTED TRUE)
            endif()
        endif()
    endforeach()
endforeach()
unset(_STARTED)
endif ()


# create an expat target to link against
if(NOT TARGET EXPAT::EXPAT)
  add_library(EXPAT::EXPAT UNKNOWN IMPORTED)
  set_target_properties(EXPAT::EXPAT PROPERTIES
    IMPORTED_LINK_INTERFACE_LANGUAGES "C"
    IMPORTED_LOCATION "${EXPAT_LIBRARY}"
    INTERFACE_INCLUDE_DIRECTORIES "${EXPAT_INCLUDE_DIR}")
endif()

# figure out if we need XML_STATIC flag
if (EXPAT_INCLUDE_DIR AND EXPAT_LIBRARY)
  enable_language(C)  
  set(EXPAT_EXPAT_CODE
"
#include <expat.h>
#include <stdio.h>
int 
main(void)
{
    printf(\"%s\", XML_ExpatVersion());
    return 0;
}
" 
)

set(CMAKE_REQUIRED_LIBRARIES_CACHE ${CMAKE_REQUIRED_LIBRARIES})
set(CMAKE_REQUIRED_INCLUDES_CACHE ${CMAKE_REQUIRED_INCLUDES})
set(CMAKE_REQUIRED_DEFINITIONS_CACHE ${CMAKE_REQUIRED_DEFINITIONS})

set(EXPAT_EXPAT_TEST)
set(CMAKE_REQUIRED_LIBRARIES "${EXPAT_LIBRARY}")
set(CMAKE_REQUIRED_INCLUDES "${EXPAT_INCLUDE_DIR}")
CHECK_C_SOURCE_COMPILES("${EXPAT_EXPAT_CODE}" EXPAT_EXPAT_TEST)

if (NOT EXPAT_EXPAT_TEST)
set(CMAKE_REQUIRED_LIBRARIES "${EXPAT_LIBRARY}")
set(CMAKE_REQUIRED_INCLUDES "${EXPAT_INCLUDE_DIR}")
set(CMAKE_REQUIRED_DEFINITIONS "-DXML_STATIC=1")

CHECK_C_SOURCE_COMPILES("${EXPAT_EXPAT_CODE}" EXPAT_EXPAT_TEST2)
if (EXPAT_EXPAT_TEST2)
  set_target_properties(EXPAT::EXPAT PROPERTIES
    INTERFACE_COMPILE_DEFINITIONS "XML_STATIC=1"
    )
else()
  message(FATAL_ERROR "Unable to compile a test executable against expat with
  
  EXPAT_INCLUDE_DIR = ${EXPAT_INCLUDE_DIR}
  EXPAT_LIBRARY     = ${EXPAT_LIBRARY}
  ")
endif()

endif()

set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_CACHE})
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_CACHE})
set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS_CACHE})
endif()

include(FindPackageHandleStandardArgs)

find_package_handle_standard_args(
    EXPAT
    VERSION_VAR   EXPAT_VERSION
    REQUIRED_VARS EXPAT_LIBRARY EXPAT_INCLUDE_DIR)

mark_as_advanced(EXPAT_VERSION)

	# Copyright (C) 2019 - 2022 by Pedro Mendes, Rector and Visitors of the
	# University of Virginia, University of Heidelberg, and University
	# of Connecticut School of Medicine.
	# All rights reserved.

	# Copyright (C) 2017 - 2018 by Pedro Mendes, Virginia Tech Intellectual
	# Properties, Inc., University of Heidelberg, and University of
	# of Connecticut School of Medicine.
	# All rights reserved.

	# Copyright (C) 2013 - 2016 by Pedro Mendes, Virginia Tech Intellectual
	# Properties, Inc., University of Heidelberg, and The University
	# of Manchester.
	# All rights reserved.

	# - Try to find the Expat XML parsing library

	# Once done this will define
	#
	# EXPAT_FOUND - system has Expat
	# EXPAT_LIBRARY - Link these to use Expat
	# EXPAT_INCLUDE_DIR - Include directory for using Expat
	# EXPAT_DEFINITIONS - Compiler switches required for using Expat
	#
	# Redistribution and use is allowed according to the terms of the BSD license.
	# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

	include(CheckCSourceCompiles)

	string(TOUPPER ${PROJECT_NAME} _UPPER_PROJECT_NAME)
	set(_PROJECT_DEPENDENCY_DIR ${_UPPER_PROJECT_NAME}_DEPENDENCY_DIR)

	find_path(EXPAT_INCLUDE_DIR expat.h
	PATHS $ENV{EXPAT_DIR}/include
	$ENV{EXPAT_DIR}
	${${_PROJECT_DEPENDENCY_DIR}}/include
	CMAKE_FIND_ROOT_PATH_BOTH
	NO_DEFAULT_PATH)

	if (NOT EXPAT_INCLUDE_DIR)
	find_path(EXPAT_INCLUDE_DIR expat.h
	PATHS $ENV{EXPAT_DIR}/include
	$ENV{EXPAT_DIR}
	${${_PROJECT_DEPENDENCY_DIR}}/include
	~/Library/Frameworks
	/Library/Frameworks
	/sw/include # Fink
	/opt/local/include # MacPorts
	/opt/csw/include # Blastwave
	/opt/include
	/usr/freeware/include
	CMAKE_FIND_ROOT_PATH_BOTH
	NO_DEFAULT_PATH)
	endif ()

	if (NOT EXPAT_INCLUDE_DIR)
	find_path(EXPAT_INCLUDE_DIR expat.h)
	endif ()

	find_library(EXPAT_LIBRARY
	NAMES libexpat expat
	PATHS $ENV{EXPAT_DIR}/${CMAKE_INSTALL_LIBDIR}
	$ENV{EXPAT_DIR}/lib-dbg
	$ENV{EXPAT_DIR}
	${${_PROJECT_DEPENDENCY_DIR}}/${CMAKE_INSTALL_LIBDIR}
	${${_PROJECT_DEPENDENCY_DIR}}/lib64
	${${_PROJECT_DEPENDENCY_DIR}}/lib
	${${_PROJECT_DEPENDENCY_DIR}}
	CMAKE_FIND_ROOT_PATH_BOTH
	NO_DEFAULT_PATH)

	if (NOT EXPAT_LIBRARY)
	find_library(EXPAT_LIBRARY
	NAMES libexpat expat
	PATHS $ENV{EXPAT_DIR}/${CMAKE_INSTALL_LIBDIR}
	$ENV{EXPAT_DIR}/lib-dbg
	$ENV{EXPAT_DIR}
	${${_PROJECT_DEPENDENCY_DIR}}/${CMAKE_INSTALL_LIBDIR}
	${${_PROJECT_DEPENDENCY_DIR}}
	~/Library/Frameworks
	/Library/Frameworks
	/sw/lib # Fink
	/opt/local/lib # MacPorts
	/opt/csw/lib # Blastwave
	/opt/lib
	/usr/freeware/lib64
	CMAKE_FIND_ROOT_PATH_BOTH
	NO_DEFAULT_PATH)
	endif()

	if (NOT EXPAT_LIBRARY)
	find_library(EXPAT_LIBRARY NAMES libexpat expat)
	endif ()

	mark_as_advanced(EXPAT_INCLUDE_DIR EXPAT_LIBRARY)


	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 CACHE)
	set(_STARTED FALSE)
	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(_STARTED)
	string(APPEND EXPAT_VERSION ".${EXPAT_VERSION_PART}")
	else()
	set(EXPAT_VERSION "${EXPAT_VERSION_PART}")
	set(_STARTED TRUE)
	endif()
	endif()
	endforeach()
	endforeach()
	unset(_STARTED)
	endif ()


	# create an expat target to link against
	if(NOT TARGET EXPAT::EXPAT)
	add_library(EXPAT::EXPAT UNKNOWN IMPORTED)
	set_target_properties(EXPAT::EXPAT PROPERTIES
	IMPORTED_LINK_INTERFACE_LANGUAGES "C"
	IMPORTED_LOCATION "${EXPAT_LIBRARY}"
	INTERFACE_INCLUDE_DIRECTORIES "${EXPAT_INCLUDE_DIR}")
	endif()

	# figure out if we need XML_STATIC flag
	if (EXPAT_INCLUDE_DIR AND EXPAT_LIBRARY)
	enable_language(C)
	set(EXPAT_EXPAT_CODE
	"
	#include <expat.h>
	#include <stdio.h>

	int
	main(void)
	{
	printf(\"%s\", XML_ExpatVersion());
	return 0;
	}
	"
	)

	set(CMAKE_REQUIRED_LIBRARIES_CACHE ${CMAKE_REQUIRED_LIBRARIES})
	set(CMAKE_REQUIRED_INCLUDES_CACHE ${CMAKE_REQUIRED_INCLUDES})
	set(CMAKE_REQUIRED_DEFINITIONS_CACHE ${CMAKE_REQUIRED_DEFINITIONS})

	set(EXPAT_EXPAT_TEST)
	set(CMAKE_REQUIRED_LIBRARIES "${EXPAT_LIBRARY}")
	set(CMAKE_REQUIRED_INCLUDES "${EXPAT_INCLUDE_DIR}")
	CHECK_C_SOURCE_COMPILES("${EXPAT_EXPAT_CODE}" EXPAT_EXPAT_TEST)

	if (NOT EXPAT_EXPAT_TEST)
	set(CMAKE_REQUIRED_LIBRARIES "${EXPAT_LIBRARY}")
	set(CMAKE_REQUIRED_INCLUDES "${EXPAT_INCLUDE_DIR}")
	set(CMAKE_REQUIRED_DEFINITIONS "-DXML_STATIC=1")

	CHECK_C_SOURCE_COMPILES("${EXPAT_EXPAT_CODE}" EXPAT_EXPAT_TEST2)
	if (EXPAT_EXPAT_TEST2)
	set_target_properties(EXPAT::EXPAT PROPERTIES
	INTERFACE_COMPILE_DEFINITIONS "XML_STATIC=1"
	)
	else()
	message(FATAL_ERROR "Unable to compile a test executable against expat with

	EXPAT_INCLUDE_DIR = ${EXPAT_INCLUDE_DIR}
	EXPAT_LIBRARY = ${EXPAT_LIBRARY}
	")
	endif()

	endif()

	set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_CACHE})
	set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_CACHE})
	set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS_CACHE})
	endif()

	include(FindPackageHandleStandardArgs)

	find_package_handle_standard_args(
	EXPAT
	VERSION_VAR EXPAT_VERSION
	REQUIRED_VARS EXPAT_LIBRARY EXPAT_INCLUDE_DIR)

	mark_as_advanced(EXPAT_VERSION)