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CMake/Modules/CMakeFindJavaCommon.cmake

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Simplify CMake per-source license notices Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
2016-09-27 22:01:08 +03:00
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
Find{Java,JNI}: Consider JAVA_HOME before ENV{JAVA_HOME} Add a helper module CMakeFindJavaCommon shared between FindJava and FindJNI to select a JAVA_HOME value. Prefer a CMake variable or cache entry first, then an environment variable.
2014-01-29 22:47:51 +04:00
# 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 "${_ENV_JAVA_HOME}")
set(_JAVA_HOME_EXPLICIT 1)
Find{Java,JNI}: Use /usr/libexec/java_home on OS X If no JAVA_HOME or ENV{JAVA_HOME} is set then try running this tool to get the system default Java home. Suggested-by: Larry Shaffer <larrys@dakotacarto.com>
2014-01-29 22:51:32 +04:00
else()
set(_CMD_JAVA_HOME "")
if(APPLE AND EXISTS /usr/libexec/java_home)
execute_process(COMMAND /usr/libexec/java_home
OUTPUT_VARIABLE _CMD_JAVA_HOME OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
if(_CMD_JAVA_HOME AND IS_DIRECTORY "${_CMD_JAVA_HOME}")
set(_JAVA_HOME "${_CMD_JAVA_HOME}")
set(_JAVA_HOME_EXPLICIT 0)
endif()
unset(_CMD_JAVA_HOME)
Find{Java,JNI}: Consider JAVA_HOME before ENV{JAVA_HOME} Add a helper module CMakeFindJavaCommon shared between FindJava and FindJNI to select a JAVA_HOME value. Prefer a CMake variable or cache entry first, then an environment variable.
2014-01-29 22:47:51 +04:00
endif()
unset(_ENV_JAVA_HOME)
endif()