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Ryan Pavlik September 13, 2013
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# - Create launchers to set working directory, env. vars, etc.
#
# include(CreateLaunchers) - to make these available
# guess_runtime_library_dirs(<outputvarname> [<extralibrary> ...])
# create_default_target_launcher(<targetname>
# [ARGS <args...>]
# [FORWARD_ARGS]
# [RUNTIME_LIBRARY_DIRS <dir...>]
# [WORKING_DIRECTORY <dir>]
# [ENVIRONMENT <VAR=value> [<VAR=value>...]])
#
# create_target_launcher(<targetname>
# [ARGS <args...>]
# [FORWARD_ARGS]
# [RUNTIME_LIBRARY_DIRS <dir...>]
# [WORKING_DIRECTORY <dir>]
# [ENVIRONMENT <VAR=value> [<VAR=value>...]])
#
# create_generic_launcher(<launchername>
# [RUNTIME_LIBRARY_DIRS <dir...>]
# [WORKING_DIRECTORY <dir>]
# [ENVIRONMENT <VAR=value> [<VAR=value>...]])
# - sets GENERIC_LAUNCHER_COMMAND and GENERIC_LAUNCHER_FAIL_REGULAR_EXPRESSION
#
# Requires these CMake modules:
# ListFilter
# ProgramFilesGlob
# CleanDirectoryList
#
# Requires CMake 2.6 or newer (uses the 'function' command)
#
# Original Author:
# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
# http://academic.cleardefinition.com
# Iowa State University HCI Graduate Program/VRAC
#
# Copyright Iowa State University 2009-2010.
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)

if(__create_launchers)
return()
endif()
set(__create_launchers YES)

include(CleanDirectoryList)

# We must run the following at "include" time, not at function call time,
# to find the path to this module rather than the path to a calling list file
get_filename_component(_launchermoddir
${CMAKE_CURRENT_LIST_FILE}
PATH)
set(_launchermoddir "${_launchermoddir}/launcher-templates")

macro(_launcher_system_settings)
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(BITS 64)
else()
set(BITS 32)
endif()

if(WIN32)
# Find user and system name
set(SYSTEM_NAME $ENV{USERDOMAIN})
set(USER_NAME $ENV{USERNAME})
set(VCPROJ_TYPE vcproj)
set(USERFILE_EXTENSION ${SYSTEM_NAME}.${USER_NAME}.user)
set(LAUNCHER_LINESEP "&#x0A;")
if(MSVC90)
set(USERFILE_VC_VERSION 9.00)
elseif(MSVC80)
set(USERFILE_VC_VERSION 8.00)
elseif(MSVC71)
set(USERFILE_VC_VERSION 7.10)
elseif(MSVC10 OR (MSVC AND MSVC_VERSION GREATER 1600)) # 2010 or newer
set(LAUNCHER_LINESEP "\n")
set(USERFILE_VC_VERSION 10.00)
set(USERFILE_EXTENSION user)
set(VCPROJ_TYPE vcxproj)
endif()
if(BITS EQUAL 64)
set(USERFILE_PLATFORM x64)
else()
set(USERFILE_PLATFORM Win${BITS})
endif()
set(_pathdelim ";")
set(_suffix "cmd")
else()
set(_pathdelim ":")
set(USERFILE_PLATFORM ${CMAKE_SYSTEM_NAME}${BITS})
set(_suffix "sh")
find_package(GDB QUIET)
if(GDB_FOUND)
set(LAUNCHERS_GOT_GDB YES)
if(GDB_HAS_RETURN_CHILD_RESULT)
set(LAUNCHERS_GDB_ARG --return-child-result)
endif()
else()
set(LAUNCHERS_GOT_GDB)
endif()
endif()

if(WIN32 AND NOT USERFILE_REMOTE_MACHINE)
site_name(USERFILE_REMOTE_MACHINE)
mark_as_advanced(USERFILE_REMOTE_MACHINE)
endif()
endmacro()

macro(_launcher_process_args)
set(_nowhere)
set(_curdest _nowhere)
set(_val_args
ARGS
RUNTIME_LIBRARY_DIRS
WORKING_DIRECTORY
ENVIRONMENT)
set(_bool_args FORWARD_ARGS)
foreach(_arg ${_val_args} ${_bool_args})
set(${_arg})
endforeach()
foreach(_element ${ARGN})
list(FIND _val_args "${_element}" _val_arg_find)
list(FIND _bool_args "${_element}" _bool_arg_find)
if("${_val_arg_find}" GREATER "-1")
set(_curdest "${_element}")
elseif("${_bool_arg_find}" GREATER "-1")
set("${_element}" ON)
set(_curdest _nowhere)
else()
list(APPEND ${_curdest} "${_element}")
endif()
endforeach()

if(_nowhere)
message(FATAL_ERROR
"Syntax error in use of a function in CreateLaunchers!")
endif()

# Turn into a list of native paths
set(_runtime_lib_dirs)
foreach(_dlldir ${RUNTIME_LIBRARY_DIRS})
file(TO_NATIVE_PATH "${_dlldir}" _path)
set(_runtime_lib_dirs "${_runtime_lib_dirs}${_path}${_pathdelim}")
endforeach()

if(NOT WORKING_DIRECTORY)
set(WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}")
endif()

if(FORWARD_ARGS)
if(WIN32)
set(FWD_ARGS %*)
else()
set(FWD_ARGS $*)
endif()
else()
set(FWD_ARGS)
endif()

set(USERFILE_WORKING_DIRECTORY "${WORKING_DIRECTORY}")
set(USERFILE_COMMAND_ARGUMENTS "${ARGS}")
set(LAUNCHERSCRIPT_COMMAND_ARGUMENTS "${ARGS} ${FWD_ARGS}")

if(WIN32)
set(RUNTIME_LIBRARIES_ENVIRONMENT "PATH=${_runtime_lib_dirs};%PATH%")
file(READ
"${_launchermoddir}/launcher.env.cmd.in"
_cmdenv)
else()
if(APPLE)
set(RUNTIME_LIBRARIES_ENVIRONMENT
"DYLD_LIBRARY_PATH=${_runtime_lib_dirs}:$DYLD_LIBRARY_PATH")
else()
set(RUNTIME_LIBRARIES_ENVIRONMENT
"LD_LIBRARY_PATH=${_runtime_lib_dirs}:$LD_LIBRARY_PATH")
endif()
file(READ
"${_launchermoddir}/launcher.env.sh.in"
_cmdenv)
endif()
set(USERFILE_ENVIRONMENT "${RUNTIME_LIBRARIES_ENVIRONMENT}")

set(USERFILE_ENV_COMMANDS)
foreach(_arg "${RUNTIME_LIBRARIES_ENVIRONMENT}" ${ENVIRONMENT})
string(CONFIGURE
"@USERFILE_ENVIRONMENT@@LAUNCHER_LINESEP@@_arg@"
USERFILE_ENVIRONMENT
@ONLY)
string(CONFIGURE
"@USERFILE_ENV_COMMANDS@${_cmdenv}"
USERFILE_ENV_COMMANDS
@ONLY)
endforeach()
endmacro()

macro(_launcher_produce_vcproj_user)
if(MSVC)
file(READ
"${_launchermoddir}/perconfig.${VCPROJ_TYPE}.user.in"
_perconfig)
set(USERFILE_CONFIGSECTIONS)
foreach(USERFILE_CONFIGNAME ${CMAKE_CONFIGURATION_TYPES})
get_target_property(USERFILE_${USERFILE_CONFIGNAME}_COMMAND
${_targetname}
LOCATION_${USERFILE_CONFIGNAME})
file(TO_NATIVE_PATH
"${USERFILE_${USERFILE_CONFIGNAME}_COMMAND}"
USERFILE_${USERFILE_CONFIGNAME}_COMMAND)
string(CONFIGURE "${_perconfig}" _temp @ONLY ESCAPE_QUOTES)
string(CONFIGURE
"${USERFILE_CONFIGSECTIONS}${_temp}"
USERFILE_CONFIGSECTIONS
ESCAPE_QUOTES)
endforeach()


configure_file("${_launchermoddir}/${VCPROJ_TYPE}.user.in"
${VCPROJNAME}.${VCPROJ_TYPE}.${USERFILE_EXTENSION}
@ONLY)
endif()

endmacro()

macro(_launcher_configure_executable _src _tmp _target)
# get_filename_component(_targetname "${_target}" NAME)
    get_filename_component(_targetpath "${_target}" PATH)
configure_file("${_src}"
"${_tmp}"
@ONLY)
file(COPY "${_tmp}"
DESTINATION "${_targetpath}"
FILE_PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_WRITE GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
endmacro()

macro(_launcher_create_target_launcher)
if(CMAKE_CONFIGURATION_TYPES)
# Multi-config generator - multiple launchers
foreach(_config ${CMAKE_CONFIGURATION_TYPES})
get_target_property(USERFILE_${_config}_COMMAND
${_targetname}
LOCATION_${_config})
file(TO_NATIVE_PATH
"${USERFILE_${_config}_COMMAND}"
USERFILE_COMMAND)
set(_fn "launch-${_targetname}-${_config}.${_suffix}")
_launcher_configure_executable("${_launchermoddir}/targetlauncher.${_suffix}.in"
"${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${_fn}"
"${CMAKE_CURRENT_BINARY_DIR}/${_fn}")
endforeach()
else()
# Single-config generator - single launcher
get_target_property(USERFILE_COMMAND
${_targetname}
LOCATION)
file(TO_NATIVE_PATH
"${USERFILE_COMMAND}"
USERFILE_COMMAND)
_launcher_configure_executable("${_launchermoddir}/targetlauncher.${_suffix}.in"
"${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/launch-${_targetname}.${_suffix}"
"${CMAKE_CURRENT_BINARY_DIR}/launch-${_targetname}.${_suffix}"
@ONLY)
endif()
endmacro()

function(create_default_target_launcher _targetname)
_launcher_system_settings()
_launcher_process_args(${ARGN})

set(VCPROJNAME "${CMAKE_BINARY_DIR}/ALL_BUILD")
_launcher_produce_vcproj_user()

_launcher_create_target_launcher()
endfunction()

function(create_target_launcher _targetname)
_launcher_system_settings()
_launcher_process_args(${ARGN})

set(VCPROJNAME "${CMAKE_CURRENT_BINARY_DIR}/${_targetname}")
_launcher_produce_vcproj_user()

_launcher_create_target_launcher()
endfunction()

function(create_generic_launcher _launchername)
_launcher_system_settings()
_launcher_process_args(${ARGN})

if(NOT IS_ABSOLUTE _launchername)
set(_launchername
"${CMAKE_CURRENT_BINARY_DIR}/${_launchername}.${_suffix}")
else()
set(_launchername "${_launchername}.${_suffix}")
endif()
if(WIN32)
set(GENERIC_LAUNCHER_COMMAND "${_launchername}" PARENT_SCOPE)
set(GENERIC_LAUNCHER_FAIL_REGULAR_EXPRESSION)
else()
set(GENERIC_LAUNCHER_COMMAND sh "${_launchername}" PARENT_SCOPE)
set(GENERIC_LAUNCHER_FAIL_REGULAR_EXPRESSION
"Program terminated with signal")
endif()

_launcher_configure_executable("${_launchermoddir}/genericlauncher.${_suffix}.in"
"${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/genericlauncher.${_suffix}.in"
"${_launchername}")
endfunction()

function(guess_runtime_library_dirs _var)
# Start off with the link directories of the calling listfile's directory
get_directory_property(_libdirs LINK_DIRECTORIES)

# Add additional libraries passed to the function
foreach(_lib ${ARGN})
get_filename_component(_libdir "${_lib}" PATH)
list(APPEND _libdirs "${_libdir}")
endforeach()

# Now, build a list of potential dll directories
set(_dlldirs)
foreach(_libdir ${_libdirs})
# Add the libdir itself
list(APPEND _dlldirs "${_libdir}")

# Look also in libdir/../bin since the dll might not be with the lib
get_filename_component(_libdir "${_libdir}/../bin" ABSOLUTE)
list(APPEND _dlldirs "${_libdir}")
endforeach()

# Only keep the valid, unique directories
clean_directory_list(_dlldirs)

# Return _dlldirs
set(${_var} "${_dlldirs}" PARENT_SCOPE)
endfunction()
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