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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#.rst:
# FindJava
# --------
#
# Find Java
#
# This module finds if Java is installed and determines where the
# include files and libraries are. The caller may set variable JAVA_HOME
# to specify a Java installation prefix explicitly.
#
# See also the :module:`FindJNI` module to find Java development tools.
#
# Specify one or more of the following components as you call this find module. See example below.
#
# ::
#
# Runtime = User just want to execute some Java byte-compiled
# Development = Development tools (java, javac, javah and javadoc), includes Runtime component
# IdlJ = idl compiler for Java
# JarSigner = signer tool for jar
#
#
# This module sets the following result variables:
#
# ::
#
# Java_JAVA_EXECUTABLE = the full path to the Java runtime
# Java_JAVAC_EXECUTABLE = the full path to the Java compiler
# Java_JAVAH_EXECUTABLE = the full path to the Java header generator
# Java_JAVADOC_EXECUTABLE = the full path to the Java documentation generator
# Java_IDLJ_EXECUTABLE = the full path to the Java idl compiler
# Java_JAR_EXECUTABLE = the full path to the Java archiver
# Java_JARSIGNER_EXECUTABLE = the full path to the Java jar signer
# Java_VERSION_STRING = Version of java found, 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)
#
#
#
# The minimum required version of Java can be specified using the
# standard CMake syntax, e.g. find_package(Java 1.5)
#
# NOTE: ${Java_VERSION} and ${Java_VERSION_STRING} are not guaranteed to
# be identical. For example some java version may return:
# Java_VERSION_STRING = 1.5.0_17 and Java_VERSION = 1.5.0.17
#
# another example is the Java OEM, with: Java_VERSION_STRING = 1.6.0-oem
# and Java_VERSION = 1.6.0
#
# For these components the following variables are set:
#
# ::
#
# Java_FOUND - TRUE if all components are found.
# Java_<component>_FOUND - TRUE if <component> is found.
#
#
#
# Example Usages:
#
# ::
#
# find_package(Java)
# find_package(Java COMPONENTS Runtime)
# find_package(Java COMPONENTS Development)
include(${CMAKE_CURRENT_LIST_DIR}/CMakeFindJavaCommon.cmake)
# The HINTS option should only be used for values computed from the system.
set(_JAVA_HINTS)
if(_JAVA_HOME)
list(APPEND _JAVA_HINTS ${_JAVA_HOME}/bin)
endif()
list(APPEND _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"
)
# 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
/usr/local/java/share/bin
/usr/java/j2sdk1.4.2_04
/usr/lib/j2sdk1.4-sun/bin
/usr/java/j2sdk1.4.2_09/bin
/usr/lib/j2sdk1.5-sun/bin
/opt/sun-jdk-1.5.0.04/bin
/usr/local/jdk-1.7.0/bin
/usr/local/jdk-1.6.0/bin
)
find_program(Java_JAVA_EXECUTABLE
NAMES java
HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
if(Java_JAVA_EXECUTABLE)
execute_process(COMMAND ${Java_JAVA_EXECUTABLE} -version
RESULT_VARIABLE res
OUTPUT_VARIABLE var
ERROR_VARIABLE var # sun-java output to stderr
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE)
if( res )
if(var MATCHES "No Java runtime present, requesting install")
set_property(CACHE Java_JAVA_EXECUTABLE
PROPERTY VALUE "Java_JAVA_EXECUTABLE-NOTFOUND")
elseif(${Java_FIND_REQUIRED})
message( FATAL_ERROR "Error executing java -version" )
else()
message( STATUS "Warning, could not run java -version")
endif()
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
# 5. OpenJDK 1.7.x on OpenBSD
if(var MATCHES "java version \"([0-9]+\\.[0-9]+\\.[0-9_.]+.*)\"")
# This is most likely Sun / OpenJDK, or maybe GCJ-java compat layer
set(Java_VERSION_STRING "${CMAKE_MATCH_1}")
elseif(var MATCHES "java full version \"kaffe-([0-9]+\\.[0-9]+\\.[0-9_]+)\"")
# Kaffe style
set(Java_VERSION_STRING "${CMAKE_MATCH_1}")
elseif(var MATCHES "openjdk version \"([0-9]+\\.[0-9]+\\.[0-9_]+.*)\"")
# OpenJDK ver 1.7.x on OpenBSD
set(Java_VERSION_STRING "${CMAKE_MATCH_1}")
else()
if(NOT Java_FIND_QUIETLY)
message(WARNING "regex not supported: ${var}. Please report")
endif()
endif()
string( REGEX REPLACE "([0-9]+).*" "\\1" Java_VERSION_MAJOR "${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()
endif()
endif()
find_program(Java_JAR_EXECUTABLE
NAMES jar
HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
find_program(Java_JAVAC_EXECUTABLE
NAMES javac
HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
find_program(Java_JAVAH_EXECUTABLE
NAMES javah
HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
find_program(Java_JAVADOC_EXECUTABLE
NAMES javadoc
HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
find_program(Java_IDLJ_EXECUTABLE
NAMES idlj
HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
find_program(Java_JARSIGNER_EXECUTABLE
NAMES jarsigner
HINTS ${_JAVA_HINTS}
PATHS ${_JAVA_PATHS}
)
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
if(Java_FIND_COMPONENTS)
set(_JAVA_REQUIRED_VARS)
foreach(component ${Java_FIND_COMPONENTS})
# User just want to execute some Java byte-compiled
If(component STREQUAL "Runtime")
list(APPEND _JAVA_REQUIRED_VARS Java_JAVA_EXECUTABLE)
if(Java_JAVA_EXECUTABLE)
set(Java_Runtime_FOUND TRUE)
endif()
elseif(component STREQUAL "Development")
list(APPEND _JAVA_REQUIRED_VARS Java_JAVA_EXECUTABLE Java_JAVAC_EXECUTABLE
Java_JAVAH_EXECUTABLE Java_JAVADOC_EXECUTABLE)
if(Java_JAVA_EXECUTABLE AND Java_JAVAC_EXECUTABLE
AND Java_JAVAH_EXECUTABLE AND Java_JAVADOC_EXECUTABLE)
set(Java_Development_FOUND TRUE)
endif()
elseif(component STREQUAL "IdlJ")
list(APPEND _JAVA_REQUIRED_VARS Java_IDLJ_EXECUTABLE)
if(Java_IDLJ_EXECUTABLE)
set(Java_IdlJ_FOUND TRUE)
endif()
elseif(component STREQUAL "JarSigner")
list(APPEND _JAVA_REQUIRED_VARS Java_JARSIGNER_EXECUTABLE)
if(Java_JARSIGNER_EXECUTABLE)
set(Java_JarSigner_FOUND TRUE)
endif()
else()
message(FATAL_ERROR "Comp: ${component} is not handled")
endif()
endforeach()
list (REMOVE_DUPLICATES _JAVA_REQUIRED_VARS)
find_package_handle_standard_args(Java
REQUIRED_VARS ${_JAVA_REQUIRED_VARS} HANDLE_COMPONENTS
VERSION_VAR Java_VERSION
)
if(Java_FOUND)
foreach(component ${Java_FIND_COMPONENTS})
set(Java_${component}_FOUND TRUE)
endforeach()
endif()
else()
# Check for Development
find_package_handle_standard_args(Java
REQUIRED_VARS Java_JAVA_EXECUTABLE Java_JAR_EXECUTABLE Java_JAVAC_EXECUTABLE
Java_JAVAH_EXECUTABLE Java_JAVADOC_EXECUTABLE
VERSION_VAR Java_VERSION
)
endif()
mark_as_advanced(
Java_JAVA_EXECUTABLE
Java_JAR_EXECUTABLE
Java_JAVAC_EXECUTABLE
Java_JAVAH_EXECUTABLE
Java_JAVADOC_EXECUTABLE
Java_IDLJ_EXECUTABLE
Java_JARSIGNER_EXECUTABLE
)
# LEGACY
set(JAVA_RUNTIME ${Java_JAVA_EXECUTABLE})
set(JAVA_ARCHIVE ${Java_JAR_EXECUTABLE})
set(JAVA_COMPILE ${Java_JAVAC_EXECUTABLE})
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