CMake/Modules/CMakeFindJavaCommon.cmake

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#=============================================================================
# Copyright 2013-2014 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# Do not include this module directly from code outside CMake!
set(_JAVA_HOME "")
if(JAVA_HOME AND IS_DIRECTORY "${JAVA_HOME}")
set(_JAVA_HOME "${JAVA_HOME}")
set(_JAVA_HOME_EXPLICIT 1)
else()
set(_ENV_JAVA_HOME "")
if(DEFINED ENV{JAVA_HOME})
file(TO_CMAKE_PATH "$ENV{JAVA_HOME}" _ENV_JAVA_HOME)
endif()
if(_ENV_JAVA_HOME AND IS_DIRECTORY "${_ENV_JAVA_HOME}")
set(_JAVA_HOME "${_ENV_JAVA_HOME}")
set(_JAVA_HOME_EXPLICIT 1)
else()
set(_CMD_JAVA_HOME "")
if(APPLE AND EXISTS /usr/libexec/java_home)
execute_process(COMMAND /usr/libexec/java_home
OUTPUT_VARIABLE _CMD_JAVA_HOME OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
if(_CMD_JAVA_HOME AND IS_DIRECTORY "${_CMD_JAVA_HOME}")
set(_JAVA_HOME "${_CMD_JAVA_HOME}")
set(_JAVA_HOME_EXPLICIT 0)
endif()
unset(_CMD_JAVA_HOME)
endif()
unset(_ENV_JAVA_HOME)
endif()