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UseJava: Add support for javah tool

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Add a `create_javah` API.
This commit is contained in:
Marc Chevrier
2015-08-05 07:46:02 +00:00
committed by Brad King
parent f9865743ed
commit 4476feac33
7 changed files with 244 additions and 0 deletions
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157
Modules/UseJava.cmake
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@@ -309,6 +309,65 @@
#
#
# if you don't set the INSTALLPATH.
#
# ::
#
# create_javah(TARGET <target>
# GENERATED_FILES <VAR>
# CLASSES <class>...
# [CLASSPATH <classpath>...]
# [DEPENDS <depend>...]
# [OUTPUT_NAME <path>|OUTPUT_DIR <path>]
# )
#
# Create C header files from java classes. These files provide the connective glue
# that allow your Java and C code to interact.
#
# There are two main signatures for create_javah. The first signature
# returns generated files throught variable specified by GENERATED_FILES option:
#
# ::
#
# Example:
# Create_javah(GENERATED_FILES files_headers
# CLASSES org.cmake.HelloWorld
# CLASSPATH hello.jar
# )
#
#
#
# The second signature for create_javah creates a target which encapsulates
# header files generation.
#
# ::
#
# Example:
# Create_javah(TARGET target_headers
# CLASSES org.cmake.HelloWorld
# CLASSPATH hello.jar
# )
#
#
#
# Both signatures share same options.
#
# ``CLASSES <class>...``
# Specifies Java classes used to generate headers.
#
# ``CLASSPATH <classpath>...``
# Specifies various paths to look up classes. Here .class files, jar files or targets
# created by command add_jar can be used.
#
# ``DEPENDS <depend>...``
# Targets on which the javah target depends
#
# ``OUTPUT_NAME <path>``
# Concatenates the resulting header files for all the classes listed by option CLASSES
# into <path>. Same behavior as option '-o' of javah tool.
#
# ``OUTPUT_DIR <path>``
# Sets the directory where the header files will be generated. Same behavior as option
# '-d' of javah tool. If not specified, ${CMAKE_CURRENT_BINARY_DIR} is used as output directory.
#=============================================================================
# Copyright 2013 OpenGamma Ltd. <graham@opengamma.com>
@@ -1131,3 +1190,101 @@ function(create_javadoc _target)
DESTINATION ${_javadoc_installpath}
)
endfunction()
function (create_javah)
cmake_parse_arguments(_create_javah
""
"TARGET;GENERATED_FILES;OUTPUT_NAME;OUTPUT_DIR"
"CLASSES;CLASSPATH;DEPENDS"
${ARGN})
# ckeck parameters
if (NOT _create_javah_TARGET AND NOT _create_javah_GENERATED_FILES)
message (FATAL_ERROR "create_javah: TARGET or GENERATED_FILES must be specified.")
endif()
if (_create_javah_OUTPUT_NAME AND _create_javah_OUTPUT_DIR)
message (FATAL_ERROR "create_javah: OUTPUT_NAME and OUTPUT_DIR are mutually exclusive.")
endif()
if (NOT _create_javah_CLASSES)
message (FATAL_ERROR "create_javah: CLASSES is a required parameter.")
endif()
set (_output_files)
if (WIN32 AND NOT CYGWIN AND CMAKE_HOST_SYSTEM_NAME MATCHES "Windows")
set(_classpath_sep ";")
else ()
set(_classpath_sep ":")
endif()
# handle javah options
set (_javah_options)
if (_create_javah_CLASSPATH)
# CLASSPATH can specify directories, jar files or targets created with add_jar command
set (_classpath)
foreach (_path IN LISTS _create_javah_CLASSPATH)
if (TARGET ${_path})
get_target_property (_jar_path ${_path} JAR_FILE)
if (_jar_path)
list (APPEND _classpath "${_jar_path}")
list (APPEND _create_javah_DEPENDS "${_path}")
else()
message(SEND_ERROR "create_javah: CLASSPATH target ${_path} is not a jar.")
endif()
elseif (EXISTS "${_path}")
list (APPEND _classpath "${_path}")
if (NOT IS_DIRECTORY "${_path}")
list (APPEND _create_javah_DEPENDS "${_path}")
endif()
else()
message(SEND_ERROR "create_javah: CLASSPATH entry ${_path} does not exist.")
endif()
endforeach()
string (REPLACE ";" "${_classpath_sep}" _classpath "${_classpath}")
list (APPEND _javah_options -classpath ${_classpath})
endif()
if (_create_javah_OUTPUT_DIR)
list (APPEND _javah_options -d "${_create_javah_OUTPUT_DIR}")
endif()
if (_create_javah_OUTPUT_NAME)
list (APPEND _javah_options -o "${_create_javah_OUTPUT_NAME}")
set (_output_files "${_create_javah_OUTPUT_NAME}")
get_filename_component (_create_javah_OUTPUT_DIR "${_create_javah_OUTPUT_NAME}" DIRECTORY)
get_filename_component (_create_javah_OUTPUT_DIR "${_create_javah_OUTPUT_DIR}" ABSOLUTE)
endif()
if (NOT _create_javah_OUTPUT_DIR)
set (_create_javah_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}")
endif()
if (NOT _create_javah_OUTPUT_NAME)
# compute output names
foreach (_class IN LISTS _create_javah_CLASSES)
string (REPLACE "." "_" _c_header "${_class}")
set (_c_header "${_create_javah_OUTPUT_DIR}/${_c_header}.h")
list (APPEND _output_files "${_c_header}")
endforeach()
endif()
# finalize custom command arguments
if (_create_javah_DEPENDS)
list (INSERT _create_javah_DEPENDS 0 DEPENDS)
endif()
add_custom_command (OUTPUT ${_output_files}
COMMAND "${Java_JAVAH_EXECUTABLE}" ${_javah_options} -jni ${_create_javah_CLASSES}
${_create_javah_DEPENDS}
WORKING_DIRECTORY ${_create_javah_OUTPUT_DIR}
COMMENT "Building C header files from classes...")
if (_create_javah_TARGET)
add_custom_target (${_create_javah_TARGET} ALL DEPENDS ${_output_files})
endif()
if (_create_javah_GENERATED_FILES)
set (${_create_javah_GENERATED_FILES} ${_output_files} PARENT_SCOPE)
endif()
endfunction()