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UseJava: enable exportation of native headers target

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This commit is contained in:
Marc Chevrier
2020-12-29 17:13:15 +01:00
parent c2a8d9b94e
commit 53235626a2
5 changed files with 87 additions and 5 deletions
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55
Modules/UseJava.cmake
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@@ -23,7 +23,8 @@ Creating And Installing JARs
[VERSION <version>]
[OUTPUT_NAME <name>]
[OUTPUT_DIR <dir>]
[GENERATE_NATIVE_HEADERS <target> [DESTINATION <dir>]]
[GENERATE_NATIVE_HEADERS <target>
[DESTINATION (<dir>|INSTALL <dir> [BUILD <dir>])]]
)
This command creates a ``<target_name>.jar``. It compiles the given
@@ -37,7 +38,7 @@ For backwards compatibility, jar files listed as sources are ignored (as
they have been since the first version of this module).
.. versionadded:: 3.4
Support fot response files (prefixed by ``@``) in the ``SOURCES`` list.
Support for response files (prefixed by ``@``) in the ``SOURCES`` list.
The default ``OUTPUT_DIR`` can also be changed by setting the variable
``CMAKE_JAVA_TARGET_OUTPUT_DIR``.
@@ -52,6 +53,12 @@ The default ``OUTPUT_DIR`` can also be changed by setting the variable
``GENERATE_NATIVE_HEADERS`` option requires, at least, version 1.8 of the JDK.
.. versionadded:: 3.20
``DESTINATION`` sub-option now supports the possibility to specify different
output directories for ``BUILD`` and ``INSTALL`` steps. This is required to
export the interface target generated by ``GENERATE_NATIVE_HEADERS`` option.
If ``BUILD`` directory is not specified, a default directory will be used.
The ``add_jar()`` function sets the following target properties on
``<target_name>``:
@@ -66,6 +73,11 @@ The ``add_jar()`` function sets the following target properties on
The directory where the class files can be found. For example to use them
with ``javah``.
.. versionadded:: 3.20
The target generated by option ``GENERATE_NATIVE_HEADERS`` has the property
``NATIVE_HEADERS_DIRECTORY`` which specify the directory holding the native
headers.
.. code-block:: cmake
install_jar(<target_name> <destination>)
@@ -217,6 +229,18 @@ native headers can then be used to compile C/C++ sources with the
add_library(bar bar.cpp)
target_link_libraries(bar PRIVATE foo-native)
.. versionadded:: 3.20
It is now possible to export the target generated by
``GENERATE_NATIVE_HEADERS`` option.
.. code-block:: cmake
add_jar(foo foo.java GENERATE_NATIVE_HEADERS foo-native
DESTINATION INSTALL include)
install(TARGETS foo-native EXPORT native)
install(DIRECTORY "$<TARGET_PROPERTY:foo-native,NATIVE_HEADERS_DIRECTORY>/"
DESTINATION include)
install(EXPORT native DESTINATION /to/export NAMESPACE foo)
Finding JARs
^^^^^^^^^^^^
@@ -493,7 +517,10 @@ function(add_jar _TARGET_NAME)
if (Java_VERSION VERSION_LESS 1.8)
message (FATAL_ERROR "ADD_JAR: GENERATE_NATIVE_HEADERS is not supported with this version of Java.")
endif()
cmake_parse_arguments (_add_jar_GENERATE_NATIVE_HEADERS "" "DESTINATION" "" ${_add_jar_GENERATE_NATIVE_HEADERS})
unset (_GENERATE_NATIVE_HEADERS_OUTPUT_DESC)
cmake_parse_arguments (_add_jar_GENERATE_NATIVE_HEADERS "" "" "DESTINATION" ${_add_jar_GENERATE_NATIVE_HEADERS})
if (NOT _add_jar_GENERATE_NATIVE_HEADERS_UNPARSED_ARGUMENTS)
message (FATAL_ERROR "ADD_JAR: GENERATE_NATIVE_HEADERS: missing required argument.")
endif()
@@ -504,11 +531,30 @@ function(add_jar _TARGET_NAME)
endif()
if (NOT _add_jar_GENERATE_NATIVE_HEADERS_DESTINATION)
set (_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/${_TARGET_NAME}.dir/native_headers")
else()
list (LENGTH _add_jar_GENERATE_NATIVE_HEADERS_DESTINATION length)
if (NOT length EQUAL 1)
cmake_parse_arguments (_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION "" "BUILD;INSTALL" "" "${_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION}")
if (_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION_UNPARSED_ARGUMENTS)
message (FATAL_ERROR "ADD_JAR: GENERATE_NATIVE_HEADERS: DESTINATION: ${_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION_UNPARSED_ARGUMENTS}: unexpected argument(s).")
endif()
if (NOT _add_jar_GENERATE_NATIVE_HEADERS_DESTINATION_INSTALL)
message (FATAL_ERROR "ADD_JAR: GENERATE_NATIVE_HEADERS: DESTINATION: INSTALL sub-option is required.")
endif()
if (NOT _add_jar_GENERATE_NATIVE_HEADERS_DESTINATION_BUILD)
set(_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION_BUILD "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/${_TARGET_NAME}.dir/native_headers")
endif()
set(_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION "${_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION_BUILD}")
set(_GENERATE_NATIVE_HEADERS_OUTPUT_DESC "$<BUILD_INTERFACE:${_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION_BUILD}>" "$<INSTALL_INTERFACE:${_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION_INSTALL}>")
endif()
endif()
set (_GENERATE_NATIVE_HEADERS_TARGET ${_add_jar_GENERATE_NATIVE_HEADERS_UNPARSED_ARGUMENTS})
set (_GENERATE_NATIVE_HEADERS_OUTPUT_DIR "${_add_jar_GENERATE_NATIVE_HEADERS_DESTINATION}")
set (_GENERATE_NATIVE_HEADERS -h "${_GENERATE_NATIVE_HEADERS_OUTPUT_DIR}")
if(NOT _GENERATE_NATIVE_HEADERS_OUTPUT_DESC)
set(_GENERATE_NATIVE_HEADERS_OUTPUT_DESC "${_GENERATE_NATIVE_HEADERS_OUTPUT_DIR}")
endif()
endif()
if (LIBRARY_OUTPUT_PATH)
@@ -762,8 +808,9 @@ function(add_jar _TARGET_NAME)
# create an INTERFACE library encapsulating include directory for generated headers
add_library (${_GENERATE_NATIVE_HEADERS_TARGET} INTERFACE)
target_include_directories (${_GENERATE_NATIVE_HEADERS_TARGET} INTERFACE
"${_GENERATE_NATIVE_HEADERS_OUTPUT_DIR}"
"${_GENERATE_NATIVE_HEADERS_OUTPUT_DESC}"
${JNI_INCLUDE_DIRS})
set_property(TARGET ${_GENERATE_NATIVE_HEADERS_TARGET} PROPERTY NATIVE_HEADERS_DIRECTORY "${_GENERATE_NATIVE_HEADERS_OUTPUT_DIR}")
# this INTERFACE library depends on jar generation
add_dependencies (${_GENERATE_NATIVE_HEADERS_TARGET} ${_TARGET_NAME})