CMake/Modules/FindJava.cmake

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# - Find Java
# This module finds if Java is installed and determines where the
# include files and libraries are. This code sets the following
# variables:
#
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# Java_JAVA_EXECUTABLE = the full path to the Java runtime
# Java_JAVAC_EXECUTABLE = the full path to the Java compiler
# Java_JAR_EXECUTABLE = the full path to the Java archiver
# Java_VERSION_STRING = Version of the package found (java version), eg. 1.6.0_12
# Java_VERSION_MAJOR = The major version of the package found.
# Java_VERSION_MINOR = The minor version of the package found.
# Java_VERSION_PATCH = The patch version of the package found.
# Java_VERSION_TWEAK = The tweak version of the package found (after '_')
# Java_VERSION = This is set to: $major.$minor.$patch(.$tweak)
#
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# NOTE: ${Java_VERSION} and ${Java_VERSION_STRING} are not guaranteed to be
# identical. For example some java version may return:
# Java_VERSION_STRING = 1.5.0_17
# and
# Java_VERSION = 1.5.0.17
#
# another example is the Java OEM, with:
# Java_VERSION_STRING = 1.6.0-oem
# and
# Java_VERSION = 1.6.0
#
# NOTE: At the moment this script will look for javac and jar component,
# which means it will fail if javac or jar is not found.:w
# See Bug #9840
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#=============================================================================
# Copyright 2002-2009 Kitware, Inc.
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# Copyright 2009 Mathieu Malaterre <mathieu.malaterre@gmail.com>
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#
# 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 distributed this file outside of CMake, substitute the full
# License text for the above reference.)
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# The HINTS option should only be used for values computed from the system.
SET(_JAVA_HINTS
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\2.0;JavaHome]/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\1.9;JavaHome]/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\1.8;JavaHome]/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\1.7;JavaHome]/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\1.6;JavaHome]/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\1.5;JavaHome]/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\1.4;JavaHome]/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\1.3;JavaHome]/bin"
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$ENV{JAVA_HOME}/bin
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)
# Hard-coded guesses should still go in PATHS. This ensures that the user
# environment can always override hard guesses.
SET(_JAVA_PATHS
/usr/lib/java/bin
/usr/share/java/bin
/usr/local/java/bin
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/usr/local/java/share/bin
/usr/java/j2sdk1.4.2_04
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/usr/lib/j2sdk1.4-sun/bin
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/usr/java/j2sdk1.4.2_09/bin
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/usr/lib/j2sdk1.5-sun/bin
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/opt/sun-jdk-1.5.0.04/bin
)
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FIND_PROGRAM(Java_JAVA_EXECUTABLE
NAMES java
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HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
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IF(Java_JAVA_EXECUTABLE)
set(_java_version_acceptable TRUE)
EXECUTE_PROCESS(COMMAND ${Java_JAVA_EXECUTABLE} -version
RESULT_VARIABLE res
OUTPUT_VARIABLE var
ERROR_VARIABLE var # sun-java output to stderr
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE)
IF( res )
MESSAGE( FATAL_ERROR "Error executing java -version" )
ELSE()
# extract major/minor version and patch level from "java -version" output
# Tested on linux using
# 1. Sun / Sun OEM
# 2. OpenJDK 1.6
# 3. GCJ 1.5
# 4. Kaffe 1.4.2
IF(var MATCHES "java version \"[0-9]+\\.[0-9]+\\.[0-9_]+[oem-]*\".*")
# This is most likely Sun / OpenJDK, or maybe GCJ-java compat layer
STRING( REGEX REPLACE ".* version \"([0-9]+\\.[0-9]+\\.[0-9_]+)[oem-]*\".*"
"\\1" Java_VERSION_STRING "${var}" )
ELSEIF(var MATCHES "java full version \"kaffe-[0-9]+\\.[0-9]+\\.[0-9_]+\".*")
# Kaffe style
STRING( REGEX REPLACE "java full version \"kaffe-([0-9]+\\.[0-9]+\\.[0-9_]+).*"
"\\1" Java_VERSION_STRING "${var}" )
ELSE()
IF(NOT Java_FIND_QUIETLY)
message(WARNING "regex not supported: ${var}. Please report")
set(_java_version_acceptable FALSE)
ENDIF(NOT Java_FIND_QUIETLY)
ENDIF()
STRING( REGEX REPLACE "([0-9]+).*" "\\1" Java_VERSION_MAJOR "${Java_VERSION_STRING}" )
STRING( REGEX REPLACE "[0-9]+\\.([0-9]+).*" "\\1" Java_VERSION_MINOR "${Java_VERSION_STRING}" )
STRING( REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" Java_VERSION_PATCH "${Java_VERSION_STRING}" )
# warning tweak version can be empty:
STRING( REGEX REPLACE "[0-9]+\\.[0-9]+\\.[0-9]+\\_?([0-9]*)$" "\\1" Java_VERSION_TWEAK "${Java_VERSION_STRING}" )
if( Java_VERSION_TWEAK STREQUAL "" ) # check case where tweak is not defined
set(Java_VERSION ${Java_VERSION_MAJOR}.${Java_VERSION_MINOR}.${Java_VERSION_PATCH})
else( )
set(Java_VERSION ${Java_VERSION_MAJOR}.${Java_VERSION_MINOR}.${Java_VERSION_PATCH}.${Java_VERSION_TWEAK})
endif( )
# display info
#MESSAGE( STATUS "Java version ${Java_VERSION_STRING} configured successfully!" ) # keep me, used for debug
IF(NOT Java_FIND_QUIETLY)
MESSAGE( STATUS "Java version ${Java_VERSION} configured successfully!" )
ENDIF(NOT Java_FIND_QUIETLY)
ENDIF()
# check version if requested:
if( Java_FIND_VERSION )
if("${Java_VERSION}" VERSION_LESS "${Java_FIND_VERSION}")
set(_java_version_acceptable FALSE)
endif("${Java_VERSION}" VERSION_LESS "${Java_FIND_VERSION}")
if( Java_FIND_VERSION_EXACT )
if("${Java_VERSION}" VERSION_GREATER "${Java_FIND_VERSION}")
set(_java_version_acceptable FALSE)
endif("${Java_VERSION}" VERSION_GREATER "${Java_FIND_VERSION}")
endif( Java_FIND_VERSION_EXACT )
endif( Java_FIND_VERSION )
ENDIF(Java_JAVA_EXECUTABLE)
FIND_PROGRAM(Java_JAR_EXECUTABLE
NAMES jar
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HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
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FIND_PROGRAM(Java_JAVAC_EXECUTABLE
NAMES javac
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HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
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include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Java DEFAULT_MSG
Java_JAVA_EXECUTABLE
Java_JAR_EXECUTABLE
Java_JAVAC_EXECUTABLE
_java_version_acceptable
)
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MARK_AS_ADVANCED(
Java_JAVA_EXECUTABLE
Java_JAR_EXECUTABLE
Java_JAVAC_EXECUTABLE
)
# LEGACY
SET(JAVA_RUNTIME ${Java_JAVA_EXECUTABLE})
SET(JAVA_ARCHIVE ${Java_JAR_EXECUTABLE})
SET(JAVA_COMPILE ${Java_JAVAC_EXECUTABLE})