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# Copyright 2010-2011 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Radio; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
if(DEFINED __INCLUDED_GR_PYTHON_CMAKE)
return()
endif()
set(__INCLUDED_GR_PYTHON_CMAKE TRUE)
########################################################################
# Setup the python interpreter:
# This allows the user to specify a specific interpreter,
# or finds the interpreter via the built-in cmake module.
########################################################################
#this allows the user to override PYTHON_EXECUTABLE
if(PYTHON_EXECUTABLE)
set(PYTHONINTERP_FOUND TRUE)
#otherwise if not set, try to automatically find it
else(PYTHON_EXECUTABLE)
#use the built-in find script
find_package(PythonInterp)
#and if that fails use the find program routine
if(NOT PYTHONINTERP_FOUND)
find_program(PYTHON_EXECUTABLE NAMES python python2.7 python2.6 python2.5)
if(PYTHON_EXECUTABLE)
set(PYTHONINTERP_FOUND TRUE)
endif(PYTHON_EXECUTABLE)
endif(NOT PYTHONINTERP_FOUND)
endif(PYTHON_EXECUTABLE)
#make the path to the executable appear in the cmake gui
set(PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE} CACHE FILEPATH "python interpreter")
#make sure we can use -B with python (introduced in 2.6)
if(PYTHON_EXECUTABLE)
execute_process(
COMMAND ${PYTHON_EXECUTABLE} -B -c ""
OUTPUT_QUIET ERROR_QUIET
RESULT_VARIABLE PYTHON_HAS_DASH_B_RESULT
)
if(PYTHON_HAS_DASH_B_RESULT EQUAL 0)
set(PYTHON_DASH_B "-B")
endif()
endif(PYTHON_EXECUTABLE)
########################################################################
# Check for the existence of a python module:
# - desc a string description of the check
# - mod the name of the module to import
# - cmd an additional command to run
# - have the result variable to set
########################################################################
macro(GR_PYTHON_CHECK_MODULE desc mod cmd have)
message(STATUS "")
message(STATUS "Python checking for ${desc}")
execute_process(
COMMAND ${PYTHON_EXECUTABLE} -c "
#########################################
try: import ${mod}
except: exit(-1)
try: assert ${cmd}
except: exit(-1)
#########################################"
RESULT_VARIABLE ${have}
)
if(${have} EQUAL 0)
message(STATUS "Python checking for ${desc} - found")
set(${have} TRUE)
else(${have} EQUAL 0)
message(STATUS "Python checking for ${desc} - not found")
set(${have} FALSE)
endif(${have} EQUAL 0)
endmacro(GR_PYTHON_CHECK_MODULE)
########################################################################
# Sets the python installation directory GR_PYTHON_DIR
########################################################################
execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "
from distutils import sysconfig
print sysconfig.get_python_lib(plat_specific=True, prefix='')
" OUTPUT_VARIABLE GR_PYTHON_DIR OUTPUT_STRIP_TRAILING_WHITESPACE
)
file(TO_CMAKE_PATH ${GR_PYTHON_DIR} GR_PYTHON_DIR)
########################################################################
# Create an always-built target with a unique name
# Usage: GR_UNIQUE_TARGET(<description> <dependencies list>)
########################################################################
function(GR_UNIQUE_TARGET desc)
file(RELATIVE_PATH reldir ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_BINARY_DIR})
execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import re, hashlib
unique = hashlib.md5('${reldir}${ARGN}').hexdigest()[:5]
print(re.sub('\\W', '_', '${desc} ${reldir} ' + unique))"
OUTPUT_VARIABLE _target OUTPUT_STRIP_TRAILING_WHITESPACE)
add_custom_target(${_target} ALL DEPENDS ${ARGN})
endfunction(GR_UNIQUE_TARGET)
########################################################################
# Install python sources (also builds and installs byte-compiled python)
########################################################################
function(GR_PYTHON_INSTALL)
include(CMakeParseArgumentsCopy)
CMAKE_PARSE_ARGUMENTS(GR_PYTHON_INSTALL "" "DESTINATION;COMPONENT" "FILES;PROGRAMS" ${ARGN})
####################################################################
if(GR_PYTHON_INSTALL_FILES)
####################################################################
install(${ARGN}) #installs regular python files
foreach(pyfile ${GR_PYTHON_INSTALL_FILES})
get_filename_component(pyfile_name ${pyfile} NAME)
get_filename_component(pyfile ${pyfile} ABSOLUTE)
string(REPLACE "${CMAKE_SOURCE_DIR}" "${CMAKE_BINARY_DIR}" pycfile "${pyfile}c")
list(APPEND python_install_gen_targets ${pycfile})
get_filename_component(pycfile_path ${pycfile} PATH)
file(MAKE_DIRECTORY ${pycfile_path})
#create a command to generate the byte-compiled pyc file
add_custom_command(
OUTPUT ${pycfile} DEPENDS ${pyfile}
COMMAND ${PYTHON_EXECUTABLE} -c
\"import py_compile\; py_compile.compile(file='${pyfile}', cfile='${pycfile}', doraise=True)\"
COMMENT "Byte-compiling ${pyfile_name}"
)
install(FILES ${pycfile}
DESTINATION ${GR_PYTHON_INSTALL_DESTINATION}
COMPONENT ${GR_PYTHON_INSTALL_COMPONENT}
)
endforeach(pyfile)
####################################################################
elseif(GR_PYTHON_INSTALL_PROGRAMS)
####################################################################
file(TO_NATIVE_PATH ${PYTHON_EXECUTABLE} pyexe_native)
foreach(pyfile ${GR_PYTHON_INSTALL_PROGRAMS})
get_filename_component(pyfile_name ${pyfile} NAME)
get_filename_component(pyfile ${pyfile} ABSOLUTE)
string(REPLACE "${CMAKE_SOURCE_DIR}" "${CMAKE_BINARY_DIR}" pyexefile "${pyfile}.exe")
list(APPEND python_install_gen_targets ${pyexefile})
get_filename_component(pyexefile_path ${pyexefile} PATH)
file(MAKE_DIRECTORY ${pyexefile_path})
add_custom_command(
OUTPUT ${pyexefile} DEPENDS ${pyfile}
COMMAND ${PYTHON_EXECUTABLE} -c
\"open('${pyexefile}', 'w').write('\#!${pyexe_native}\\n'+open('${pyfile}').read())\"
COMMENT "Shebangin ${pyfile_name}"
)
#on windows, python files need an extension to execute
get_filename_component(pyfile_ext ${pyfile} EXT)
if(WIN32 AND NOT pyfile_ext)
set(pyfile_name "${pyfile_name}.py")
endif()
install(PROGRAMS ${pyexefile} RENAME ${pyfile_name}
DESTINATION ${GR_PYTHON_INSTALL_DESTINATION}
COMPONENT ${GR_PYTHON_INSTALL_COMPONENT}
)
endforeach(pyfile)
endif()
GR_UNIQUE_TARGET("pygen" ${python_install_gen_targets})
endfunction(GR_PYTHON_INSTALL)
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