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added embedded repo pycmake.

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Steinar Foss
2019-06-14 14:45:08 +02:00
parent 8d2398612b
commit 141aa41e30
7 changed files with 1853 additions and 0 deletions
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python/pycmake/.travis.yml Normal file
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dist: trusty
language: python
script:
- git clone https://github.com/statoil/segyio
- git clone https://github.com/statoil/libecl
- mkdir segyio-build libecl-build
- pushd segyio-build
- cmake $TRAVIS_BUILD_DIR/segyio
-DBUILD_PYTHON=ON
-DCMAKE_MODULE_PATH=$TRAVIS_BUILD_DIR
-DCMAKE_INSTALL_PREFIX=`pwd`
- make -j2 install
- popd
- pushd libecl-build
- cmake $TRAVIS_BUILD_DIR/libecl
-DBUILD_PYTHON=ON
-DCMAKE_MODULE_PATH=$TRAVIS_BUILD_DIR
-DCMAKE_INSTALL_PREFIX=`pwd`
- make -j2 install
- popd

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python/pycmake/CMakeLists.txt Normal file
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cmake_minimum_required( VERSION 2.0 )
project( pycmake )
if(PYCMAKE_ENABLE_TESTING)
add_subdirectory(test)
endif()
install(FILES FindPythonModule.cmake
PythonPackage.cmake
DESTINATION share/cmake/Modules)

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python/pycmake/FindPythonModule.cmake Normal file
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# Copyright (C) 2016 Statoil ASA, Norway.
#
# This file is part of ERT - Ensemble based Reservoir Tool.
#
# ERT 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 of the License, or (at your option) any later
# version.
#
# ERT 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 at <http://www.gnu.org/licenses/gpl.html>
# for more details
# The basic assumption of this package is PEP 396 -- Module Version Numbers as
# layed out in https://www.python.org/dev/peps/pep-0396/
# Unfortunately, not all Python modules expose a version number, like inspect.
# Other Python modules expose several version numbers, e.g. one for the
# underlying software and one for the python packaging, like SQLite and PyQt.
cmake_minimum_required (VERSION 2.8.1)
# try import python module, if success, check its version, store as PY_module.
# the module is imported as-is, hence the case (e.g. PyQt4) must be correct.
#
# if given a second argument, the accessor, we call accessor on the module
# instead of the default __version__.
#
# (Yes, accessor could potentially be a function like "os.delete_everything()".)
macro(python_module_version module)
set(PY_VERSION_ACCESSOR "__version__")
set(PY_module_name ${module})
if(${PY_module_name} STREQUAL "PyQt4")
set(PY_module_name "PyQt4.Qt")
endif()
if(${PY_module_name} STREQUAL "PyQt4.Qt")
set(PY_VERSION_ACCESSOR "PYQT_VERSION_STR")
endif()
if(${PY_module_name} STREQUAL "serial")
set(PY_VERSION_ACCESSOR "VERSION")
endif()
if(${PY_module_name} STREQUAL "sqlite")
set(PY_VERSION_ACCESSOR "version")
endif()
# ARGUMENTS: module accessor
set (extra_macro_args ${ARGN})
list(LENGTH extra_macro_args num_extra_args)
if (${num_extra_args} GREATER 0)
list(GET extra_macro_args 0 accessor)
set(PY_VERSION_ACCESSOR ${accessor})
endif()
execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"
"# set module's version to py_mv and print it
import ${PY_module_name} as py_m
py_mv = '0.0.0' # output if no accessor is found
if hasattr(py_m, '${PY_VERSION_ACCESSOR}'):
py_mv = py_m.${PY_VERSION_ACCESSOR}
print(py_mv)
"
RESULT_VARIABLE _${module}_fail # error code 0 if module is importable
OUTPUT_VARIABLE _${module}_version # module.accessor or "0.0.0" if no such
ERROR_VARIABLE stderr_output
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT _${module}_fail)
set(PY_${module} ${_${module}_version})
endif()
# clean up
unset(PY_VERSION_ACCESSOR)
unset(PY_module_name)
unset(extra_macro_args)
endmacro()
# If we find the correct module and new enough version, set PY_package, where
# "package" is the given argument to the version we found else, display warning
# and do not set any variables.
macro(python_module package)
# ARGUMENTS: package package_req module_version version_req accessor
set (extra_macro_args ${ARGN})
# Did we get any optional args?
list(LENGTH extra_macro_args num_extra_args)
if (${num_extra_args} GREATER 0)
list(GET extra_macro_args 0 package_req)
else()
set(package_req "REQUIRED") # requirement not set, is required
endif ()
if (${num_extra_args} GREATER 1)
list(GET extra_macro_args 1 module_version)
else()
set(module_version "0.0.0") # module_version not set, 0.0.0 is ok
endif ()
if (${num_extra_args} GREATER 2)
list(GET extra_macro_args 2 version_req)
else()
set(version_req "MINIMUM") # version requirement not set, is minimum
endif ()
if (${num_extra_args} GREATER 3)
list(GET extra_macro_args 3 accessor)
endif ()
# Setting warning/error output level
set(PY_MSG_ERR SEND_ERROR)
set(PY_MSG_WARN WARNING)
if(${package_req} STREQUAL "QUIET")
set(PY_MSG_ERR STATUS)
set(PY_MSG_WARN STATUS)
endif()
# We are done expanding the optional arguments
python_module_version(${package} ${accessor})
# package not found in system
if(NOT DEFINED PY_${package})
if(${package_req} STREQUAL "OPTIONAL")
message(${PY_MSG_WARN} "Could not find Python module " ${package})
else()
message(${PY_MSG_ERR} "Could not find Python module " ${package})
endif()
else()
# package found in system
if (${version_req} STREQUAL "EXACT" AND NOT ${PY_${package}} VERSION_EQUAL ${module_version})
message(${PY_MSG_ERR} "Python module ${package} not exact. "
"Wanted EXACT ${module_version}, found ${PY_${package}}")
elseif (${version_req} STREQUAL "OPTIONAL" AND ${PY_${package}} VERSION_LESS ${module_version})
message(${PY_MSG_WARN} "Python module ${package} too old. "
"Wanted ${module_version}, found ${PY_${package}}")
elseif (${version_req} STREQUAL "MINIMUM" AND ${PY_${package}} VERSION_LESS ${module_version})
message(${PY_MSG_ERR} "Python module ${package} too old. "
"Wanted MINIMUM ${module_version}, found ${PY_${package}}")
else()
if(NOT DEFINED accessor)
message(STATUS "Found ${package}. "
"${PY_${package}} >= ${module_version}")
else()
message(STATUS "Found ${package}. "
"${PY_${package}} >= ${module_version} (" ${accessor} ")")
endif()
endif()
endif()
# clean up
unset(package_req)
unset(module_version)
unset(version_req)
unset(accessor)
unset(extra_macro_args)
set(PY_MSG_ERR)
set(PY_MSG_WARN)
endmacro()

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How to Apply These Terms to Your New Programs
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possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
{project} Copyright (C) {year} {fullname}
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
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might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

817
python/pycmake/PythonPackage.cmake Normal file
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@@ -0,0 +1,817 @@
# Copyright (C) 2016 Statoil ASA, Norway.
#
# pymake 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 of the License, or (at your option) any later
# version.
#
# pymake 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 at <http://www.gnu.org/licenses/gpl.html>
# for more details
# This module exports the following functions:
# * python_library(<target> [REQUIRE_LIBS] [EXACT] [VERSION <ver>]
# Create a new interface library <target> that works well with
# target_link_libraries. If the python interpreter and/or libraries are not
# found before this function is called, it will find and configure them for you.
#
# When the REQUIRE_LIBS option is used, this function will fail if the python
# libraries cannot be found. Otherwise the libraries are considered optional.
#
# When EXACT is specified and VERSION is not used, this option is ignored.
# When exact is used with a version string, this function will fail in case a
# different python version than <ver> is found. Python the X.Y and X.Y.Z
# formats are supported.
#
# When VERSION <ver> is used (without exact), this specifies the minimum
# python version.
#
# This function requires cmake3
#
# * add_python_package(<target> <name>
# [APPEND] [VERSION__INIT__]
# [TARGET_COPYONLY] [NO_LINK_FLAGS]
# [SUBDIR <dir>] [PATH <path>]
# [VERSION <version>]
# [TARGETS <tgt>...] [SOURCES <src>...]
# [DEPEND_DIRS <tgt1> <dir1> [<tgt2> <dir2>]...]
# Create a new target <target>, analogous to add_library. Creates a python
# package <name>, optionally at the path specified with PATH. If SUBDIR <dir>
# is used, then the files will be copied to $root/dir/*, in order to create
# python sub namespaces - if subdir is not used then all files will be put in
# $root/*. SOURCES <src> is the python files to be copied to the directory in
# question, and <tgt> are regular cmake libraries (targets created by
# add_library).
#
# When the APPEND option is used, the files and targets given will be added
# onto the same target package - it is necessary to use APPEND when you want
# sub modules. Consider the package foo, with the sub module bar. In python,
# you'd do: `from foo.bar import baz`. This means the directory structure is
# `foo/bar/baz.py` in the package. This is accomplished with:
# add_python_package(mypackage mypackage SOURCES __init__.py)
# add_python_package(mypackage mypackage APPEND SOURCES baz.py)
#
# When VERSION__INIT__ is used, the pycmake will inject __version__ = '$ver'
# in the __init__.py file. This version is read from PROJECT_VERSION unless
# VERSION argument is used. If VERSION is used, this version is used instead.
# If neither PROJECT_VERSION or VERSION is used, the string "0.0.0" is used
# as a fallback. The same version number will be used for the add_setup_py
# pip package.
#
# Without TARGET_COPYONLY, add_python_package will by default assume that the
# targets are python extension added in the same CMakeLists.txt file that
# invokes the function, and will modify some output properties of the targets
# accordingly. Some python modules are meant to be used with raw dlopen and
# only copied as-is into the python directory, and this option is intended
# for such packages. TARGET_COPYONLY implies NO_LINK_FLAGS
#
# NO_LINK_FLAGS stops add_python_package from adding linker flags such as
# export-dynamic, which is often expected by python extensions to keep them
# independent of a very specific interpreter+library version.
#
# DEPEND_DIRS is needed by add_setup_py if sources for the target is set with
# relative paths. These paths can be set later in order to be less intrusive
# on non-python aspects of the cmake file. Still, this information is
# necessary to accurately find and move source files to the build directory,
# so that setup.py can find them, and might need to be added later.
#
# To override the version number used for this package, pass the VERSION
# argument with a complete string. If this option is not used and
# PROJECT_VERSION is set (CMake 3.x+), PROJECT_VERSION is used.
#
# This command provides install targets, but no exports.
#
# * add_setup_py(<target> <template>
# [MANIFEST <manifest>]
# [OUTPUT <output>])
#
# Create a setuptools package that is capable of building (for sdist+bdist)
# and uploading packages to pypi and similar.
#
# The target *must* be a target created by add_python_package. The template
# is any setup.py that works with cmake's configure_file.
#
# A manifest will be created and project-provided header files will be
# included, suitable for source distribution. If you want to include other
# things in the package that isn't suitable to add to the setup.py template,
# point the MANIFEST argument to your base file.
#
# This command outputs setup.py by default, but if OUTPUT is specified, the
# generated file is <output> instead
#
# * add_python_test(testname python_test_file)
# which sets up a test target (using pycmake_test_runner.py, distributed
# with this module) and registeres it with ctest.
#
# * add_python_example(package example testname test_file [args...])
# which sets up an example program which will be run with the arguments
# [args...] (can be empty) Useful to make sure some program runs
# correctly with the given arguments, and which will report as a unit
# test failure.
include(CMakeParseArguments)
function(pycmake_to_path_list var path1)
if("${CMAKE_HOST_SYSTEM}" MATCHES ".*Windows.*")
set(sep "\\;")
else()
set(sep ":")
endif()
set(result "${path1}") # First element doesn't require separator at all...
foreach(path ${ARGN})
set(result "${result}${sep}${path}") # .. but other elements do.
endforeach()
set(${var} "${result}" PARENT_SCOPE)
endfunction()
function(pycmake_init)
if (NOT PYTHON_EXECUTABLE OR NOT PYTHON_VERSION_STRING)
find_package(PythonInterp REQUIRED)
set(PYTHON_VERSION_MAJOR ${PYTHON_VERSION_MAJOR} CACHE INTERNAL "")
set(PYTHON_VERSION_MINOR ${PYTHON_VERSION_MINOR} CACHE INTERNAL "")
set(PYTHON_VERSION_STRING ${PYTHON_VERSION_STRING} CACHE INTERNAL "")
set(PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE} CACHE INTERNAL "")
endif ()
set(pyver ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR})
if (EXISTS "/etc/debian_version")
set(PYTHON_PACKAGE_PATH "dist-packages")
else()
set(PYTHON_PACKAGE_PATH "site-packages")
endif()
set(PYTHON_INSTALL_PREFIX "lib/python${pyver}/${PYTHON_PACKAGE_PATH}"
CACHE STRING "Subdirectory to install Python modules in")
endfunction()
function(pycmake_list_concat out)
foreach (arg ${ARGN})
list(APPEND l ${arg})
endforeach ()
set(${out} ${l} PARENT_SCOPE)
endfunction ()
function(pycmake_is_system_path out path)
string(FIND ${path} ${CMAKE_SOURCE_DIR} ${out})
if (${out} EQUAL -1)
set(${out} TRUE PARENT_SCOPE)
else ()
set(${out} FALSE PARENT_SCOPE)
endif ()
endfunction ()
# internal. Traverse the tree of dependencies (linked targets) that are actual
# cmake targets and add to a list
function(pycmake_target_dependencies dependencies links target)
get_target_property(deps ${target} INTERFACE_LINK_LIBRARIES)
if (NOT deps)
get_target_property(deps ${target} LINK_LIBRARIES)
endif ()
# LINK_LIBRARIES could be not-found, in which we make it an empty list
if (NOT deps)
set(deps "")
endif ()
set(_links "")
list(APPEND _dependencies ${target})
foreach (dep ${deps})
if (TARGET ${dep})
pycmake_target_dependencies(trans_tgt trans_link ${dep})
foreach (link ${trans_tgt})
list(APPEND _dependencies ${link})
endforeach ()
pycmake_list_concat(_links ${_links} ${trans_link})
else ()
list(APPEND _links ${dep})
endif ()
endforeach ()
if ( _dependencies )
list(REMOVE_DUPLICATES _dependencies)
endif ()
if (_links)
list(REMOVE_DUPLICATES _links)
endif ()
set(${dependencies} "${_dependencies}" PARENT_SCOPE)
set(${links} "${_links}" PARENT_SCOPE)
endfunction ()
# internal. Traverse the set of dependencies (linked targets) to some parent
# and create a list of its source files, preprocessor definitions, include
# directories and custom compiler options, and write these as properties on the
# the target.
#
# In effect, these properties are set on the python package target (created
# with add_python_package):
#
# PYCMAKE_EXTENSIONS - a list of extensions (C/C++ targets) for the package
# For each extension in this list, these variables are set on the package:
# PYCMAKE_<ext>_INCLUDE_DIRECTORIES
# PYCMAKE_<ext>_SOURCES
# PYCMAKE_<ext>_COMPILE_DEFINITIONS
# PYCMAKE_<ext>_COMPILE_OPTIONS
# PYCMAKE_<ext>_LINK_LIBRARIES
#
# All properties are lists, and the content correspond to the non-namespaced
# properties (includes, sources etc.)
function(pycmake_include_target_deps pkg tgt depend_dirs)
pycmake_target_dependencies(deps links ${tgt})
set(includes "")
set(defines "")
set(sources "")
set(flags "")
if (NOT links)
set(links "")
endif ()
foreach (dep ${deps})
# If this is an interface library then most of these are probably empty
# *and* cmake will crash if we look up any non-INTERFACE_ properties,
# so prepend INTERFACE_ on interface targets
unset(INTERFACE_)
get_target_property(type ${dep} TYPE)
if (type STREQUAL INTERFACE_LIBRARY)
set(INTERFACE_ INTERFACE_)
endif ()
get_target_property(incdir ${dep} ${INTERFACE_}INCLUDE_DIRECTORIES)
get_target_property(srcs ${dep} ${INTERFACE_}SOURCES)
get_target_property(defs ${dep} ${INTERFACE_}COMPILE_DEFINITIONS)
get_target_property(flgs ${dep} ${INTERFACE_}COMPILE_OPTIONS)
# prune -NOTFOUND props
foreach (var incdir srcs defs flgs)
if(NOT ${var})
set(${var} "")
endif ()
endforeach ()
# If sources files were registered with absolute path (prefix'd with
# ${CMAKE_SOURCE_DIR}) we can just use this absolute path and
# be fine. If not, we assume that if the source file is *not* relative
# but below the current dir if it's NOT in the depend_dir list, in
# which case we make it absolute. This ends up in the sources argument
# to Extensions in setup.py
list(FIND depend_dirs ${dep} index)
if (NOT ${index} EQUAL -1)
math(EXPR index "${index} + 1")
list(GET depend_dirs ${index} prefix)
else ()
set(prefix ${CMAKE_CURRENT_SOURCE_DIR})
endif ()
unset(_srcs)
foreach (src ${srcs})
string(FIND ${src} ${CMAKE_SOURCE_DIR} x)
if(${x} EQUAL 0)
list(APPEND _srcs ${src})
else()
list(APPEND _srcs ${prefix}/${src})
endif()
endforeach ()
unset(prefix)
list(APPEND includes ${incdir})
list(APPEND sources ${_srcs})
list(APPEND defines ${defs})
list(APPEND flags ${flgs})
endforeach()
get_target_property(extensions ${pkg} PYCMAKE_EXTENSIONS)
list(APPEND extensions ${tgt})
# properties may contain generator expressions, which we filter out
string(REGEX REPLACE "\\$<[^>]+>;?" "" includes "${includes}")
string(REGEX REPLACE "\\$<[^>]+>;?" "" sources "${sources}")
string(REGEX REPLACE "\\$<[^>]+>;?" "" defines "${defines}")
string(REGEX REPLACE "\\$<[^>]+>;?" "" flags "${flags}")
# sources (on shared windows build) can contain .def files for exporting
# symbols. These are filtered out too, as exporting non-python symbols is
# uninteresting from a pip setting.
string(REGEX REPLACE "[^;]*[.]def;?" "" sources "${sources}")
set_target_properties(${pkg} PROPERTIES
PYCMAKE_EXTENSIONS "${extensions}"
PYCMAKE_${tgt}_INCLUDE_DIRECTORIES "${includes}"
PYCMAKE_${tgt}_SOURCES "${sources}"
PYCMAKE_${tgt}_LINK_LIBRARIES "${links}"
PYCMAKE_${tgt}_COMPILE_DEFINITIONS "${defines}"
PYCMAKE_${tgt}_COMPILE_OPTIONS "${flags}")
endfunction()
function(python_library target)
pycmake_init()
set(options EXACT REQUIRE_LIBS)
set(unary VERSION)
set(nary)
cmake_parse_arguments(PP "${options}" "${unary}" "${nary}" "${ARGN}")
if (PP_VERSION)
string(REGEX MATCH "[0-9][.][0-9]+" xy "${PP_VERSION}")
if (NOT xy)
set(problem "Unexpected format for VERSION argument")
set(solution "Was ${PP_VERSION}, expected X.Y (e.g. 3.5)")
message(SEND_ERROR "${problem}. ${solution}")
endif ()
endif ()
if (PP_EXACT AND NOT PP_VERSION)
unset(PP_EXACT)
endif ()
set(xyver ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR})
if (PP_EXACT AND ("${PYTHON_VERSION_STRING}" VERSION_EQUAL "${PP_VERSION}"
OR ${xyver} VERSION_EQUAL "${PP_VERSION}"))
set(problem "Wrong Python version")
set(solution "${PP_VERSION} requested, got ${PYTHON_VERSION_STRING}")
message(SEND_ERROR "${problem}: ${solution}.")
endif ()
if (PP_VERSION AND "${PYTHON_VERSION_STRING}" VERSION_LESS "${PP_VERSION}")
set(found "Found Python ${PYTHON_VERSION_STRING}")
set(requested "Python >= ${PP_VERSION} requested")
message(SEND_ERROR "${found}, but ${requested}.")
endif ()
add_library(${target} INTERFACE)
if (PP_REQUIRE_LIBS)
set(req REQUIRED)
endif ()
if (NOT PYTHONLIBS_FOUND)
find_package(PythonLibs ${req})
if (NOT PYTHONLIBS_FOUND)
return ()
endif ()
set(PYTHONLIBS_FOUND ${PYTHONLIBS_FOUND} CACHE INTERNAL "")
set(PYTHON_LIBRARIES ${PYTHON_LIBRARIES} CACHE INTERNAL "")
set(PYTHON_INCLUDE_DIRS ${PYTHON_INCLUDE_DIRS} CACHE INTERNAL "")
endif ()
target_link_libraries(${target} INTERFACE ${PYTHON_LIBRARIES})
target_include_directories(${target} SYSTEM INTERFACE ${PYTHON_INCLUDE_DIRS})
endfunction()
function(add_python_package pkg NAME)
set(options APPEND VERSION__INIT__ TARGET_COPYONLY NO_LINK_FLAGS)
set(unary PATH SUBDIR VERSION)
set(nary TARGETS SOURCES DEPEND_DIRS)
cmake_parse_arguments(PP "${options}" "${unary}" "${nary}" "${ARGN}")
if (TARGET_COPYONLY)
set(PP_NO_LINK_FLAGS TRUE)
endif ()
pycmake_init()
set(installpath ${CMAKE_INSTALL_PREFIX}/${PYTHON_INSTALL_PREFIX})
if (PP_PATH)
# obey an optional path to install into - but prefer the reasonable
# default of currentdir/name
set(dstpath ${PP_PATH})
else ()
set(dstpath ${NAME})
endif()
# if APPEND is passed, we *add* files/directories instead of creating it.
# this can be used to add sub directories to a package. If append is passed
# and the target does not exist - create it
if (TARGET ${pkg} AND NOT PP_APPEND)
set(problem "Target '${pkg}' already exists")
set(descr "To add more files to this package")
set(solution "${descr}, use add_python_package(<target> <name> APPEND)")
message(SEND_ERROR "${problem}. ${solution}.")
elseif (NOT TARGET ${pkg})
add_custom_target(${pkg} ALL)
get_filename_component(abspath ${CMAKE_CURRENT_BINARY_DIR} ABSOLUTE)
set_target_properties(${pkg} PROPERTIES PACKAGE_INSTALL_PATH ${installpath})
set_target_properties(${pkg} PROPERTIES PACKAGE_BUILD_PATH ${abspath})
set_target_properties(${pkg} PROPERTIES PYCMAKE_PACKAGE_NAME ${NAME})
set_target_properties(${pkg} PROPERTIES PYCMAKE_PACKAGES ${NAME})
set(pkgver "0.0.0")
if (PROJECT_VERSION)
set(pkgver ${PROJECT_VERSION})
endif ()
if (PP_VERSION)
set(pkgver ${PP_VERSION})
endif ()
set_target_properties(${pkg} PROPERTIES PYCMAKE_PACKAGE_VERSION ${pkgver})
# set other properties we might populate later
set_target_properties(${pkg} PROPERTIES PYCMAKE_EXTENSIONS "")
endif ()
# append subdir if requested
if (PP_SUBDIR)
set(dstpath ${dstpath}/${PP_SUBDIR})
# save modules added with SUBDIR - setup.py will want them in packages
get_target_property(_packages ${pkg} PYCMAKE_PACKAGES)
get_target_property(_pkgname ${pkg} PYCMAKE_PACKAGE_NAME)
list(APPEND _packages ${_pkgname}/${PP_SUBDIR})
set_target_properties(${pkg} PROPERTIES PYCMAKE_PACKAGES "${_packages}")
unset(_packages)
unset(_pkgname)
endif ()
# this is pretty gritty, but cmake has no generate-time file append write a
# tiny cmake script that appends to some file and writes the version
# string, which hooks into add_custom_command, and append this command on
# the copy of the __init__ requested for versioning. This means writing
# __version__ is a part of the file copy itself and won't be considered a
# change to the file.
if (PP_VERSION__INIT__)
if (PP_SUBDIR)
set(f ${PP_SUBDIR})
else ()
set(f init)
endif ()
string(REGEX REPLACE "[:/\\]" "-" initscript "${pkg}.${f}.cmake")
unset(f)
set(initscript ${CMAKE_CURRENT_BINARY_DIR}/${initscript})
message(STATUS "Writing to " ${initscript})
file(WRITE ${initscript}
"file(APPEND \${PYCMAKE__INIT__} __version__='${pkgver}')"
)
endif ()
# copy all .py files into
foreach (file ${PP_SOURCES})
get_filename_component(absfile ${file} ABSOLUTE)
get_filename_component(fname ${file} NAME)
file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${dstpath})
add_custom_command(OUTPUT ${dstpath}/${fname}
COMMAND ${CMAKE_COMMAND} -E copy ${absfile} ${dstpath}/
DEPENDS ${absfile}
)
list(APPEND _files ${CMAKE_CURRENT_BINARY_DIR}/${dstpath}/${fname})
if ("${fname}" STREQUAL "__init__.py" AND PP_VERSION__INIT__)
message(STATUS "Writing __version__ ${pkgver} to package ${pkg}.")
add_custom_command(OUTPUT ${dstpath}/${fname}
COMMAND ${CMAKE_COMMAND} -DPYCMAKE__INIT__=${dstpath}/${fname}
-P ${initscript}
APPEND
)
unset(initpy)
unset(initscript)
endif ()
endforeach ()
# drive the copying of .py files and add the dependency on the python
# package target
get_target_property(_pkgname ${pkg} PYCMAKE_PACKAGE_NAME)
set(_id ${pkg}-${_pkgname})
string(REGEX REPLACE "[:/\\]" "-" _subdir "${PP_SUBDIR}-${_pkgname}")
# make target-names slightly nicer, i.e. use subdir as target names
if (NOT TARGET ${pkg}-${_subdir} AND PP_SUBDIR)
set(pycmake-${pkg}-${_subdir} 0 CACHE INTERNAL "")
set(_id ${pkg}-${_subdir})
elseif (PP_SUBDIR)
# The same SUBDIR has been used multiple times for this target Since
# it's not possible to append source files to custom targets, a new one
# is created with an enumerator, incremented for every extra use.
math(EXPR _id "${pycmake-${pkg}-${_subdir}} + 1")
set(pycmake-${pkg}-${_subdir} ${_id} CACHE INTERNAL "" FORCE)
set(_id ${pkg}-${_subdir}-${_id})
endif ()
add_custom_target(${_id} ALL SOURCES ${_files} DEPENDS ${_files})
add_dependencies(${pkg} ${_id})
unset(_id)
unset(_subdir)
# targets are compiled as regular C/C++ libraries (via add_library), before
# we add some python specific stuff for the linker here.
set(SUFFIX ".so")
if (WIN32 OR CYGWIN)
# on windows, .pyd is used as extension instead of DLL
set(SUFFIX ".pyd")
elseif (APPLE)
# the spaces in LINK_FLAGS are important; otherwise APPEND_STRING to
# set_property seem to combine it with previously-set options or
# mangles it in some other way
set(LINK_FLAGS " -undefined dynamic_lookup ")
else()
set(LINK_FLAGS " -Xlinker -export-dynamic ")
endif()
# register all targets as python extensions
foreach (tgt ${PP_TARGETS})
if (LINK_FLAGS AND NOT PP_NO_LINK_FLAGS)
set_property(TARGET ${tgt} APPEND_STRING PROPERTY LINK_FLAGS ${LINK_FLAGS})
endif()
if (PP_TARGET_COPYONLY)
# ecl and other libraries relies on ctypes and dlopen. We want to
# copy a proper install'd target when we invoke make install, in
# particular because cmake then handles rpath stripping properly,
# so we do a dummy install into our build directory and then
# immediately install that. This does not modify the target in any
# way and does not require it to be in the same directory.
#
# for the build tree, the library is simply copied
# copy all targets into the package directory
get_target_property(_lib ${tgt} OUTPUT_NAME)
if (NOT _lib)
# if OUTPUT_NAME is not set, library base name is the same as the
# target name
set(_lib ${tgt})
endif ()
string(REGEX REPLACE "^lib" "" _lib ${_lib}${SUFFIX})
file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${dstpath})
add_custom_command(OUTPUT ${dstpath}/${_lib}
COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:${tgt}> ${dstpath}/${_lib}
DEPENDS ${tgt}
)
# Install the shared library as-is. Note that cmake typically
# strips build-time rpath on install, but this object is in fact
# never installed, so it possibly keeps rpaths to the build directory
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${dstpath}/${_lib}
DESTINATION ${installpath}/${dstpath}
)
add_custom_target(pycmake-ext-${pkg}-${_lib} ALL DEPENDS ${dstpath}/${_lib})
add_dependencies(${pkg} pycmake-ext-${pkg}-${_lib})
unset(_lib)
endif()
# traverse all dependencies and get their include dirs, link flags etc.
pycmake_include_target_deps(${pkg} ${tgt} "${PP_DEPEND_DIRS}")
endforeach ()
if (NOT PP_TARGET_COPYONLY AND PP_TARGETS)
install(TARGETS ${PP_TARGETS}
LIBRARY DESTINATION ${installpath}/${dstpath}
)
# proper python extensions - they're assumed to be created in the
# same dir as add_python_package is invoked and directly modify the
# target by changing output dir and setting suffix.
#
# The python package does not distinguish between debug/release
# builds, but this usually only matters for Windows.
#
# LIBRARY_OUTPUT_DIRECTORY only works with cmake3.0 - to support cmake
# 2.8.12, also copy the file.
set_target_properties(${PP_TARGETS} PROPERTIES
LIBRARY_OUTPUT_DIRECTORY ${dstpath}
LIBRARY_OUTPUT_DIRECTORY_DEBUG ${dstpath}
LIBRARY_OUTPUT_DIRECTORY_RELEASE ${dstpath}
RUNTIME_OUTPUT_DIRECTORY ${dstpath}
RUNTIME_OUTPUT_DIRECTORY_DEBUG ${dstpath}
RUNTIME_OUTPUT_DIRECTORY_RELEASE ${dstpath}
PREFIX ""
SUFFIX "${SUFFIX}"
)
if (${CMAKE_VERSION} VERSION_LESS 3.0)
foreach(tgt ${PP_TARGETS})
add_custom_command(TARGET ${tgt}
COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:${tgt}> ${dstpath}/
)
endforeach()
endif ()
endif ()
if (_files)
install(FILES ${_files} DESTINATION ${installpath}/${dstpath})
unset(_files)
endif ()
if (NOT PP_SOURCES AND NOT PP_TARGETS AND NOT PP_APPEND)
message(SEND_ERROR
"add_python_package called without .py files or C/C++ targets.")
endif()
endfunction()
function(add_setup_py target template)
set(options)
set(unary MANIFEST OUTPUT)
set(nary)
cmake_parse_arguments(PP "${options}" "${unary}" "${nary}" "${ARGN}")
string(TOUPPER "${CMAKE_BUILD_TYPE}" buildtype)
get_target_property(PYCMAKE_PACKAGE_NAME ${target} PYCMAKE_PACKAGE_NAME)
get_target_property(PYCMAKE_VERSION ${target} PYCMAKE_PACKAGE_VERSION)
get_target_property(extensions ${target} PYCMAKE_EXTENSIONS)
get_target_property(pkg ${target} PYCMAKE_PACKAGES)
get_directory_property(dir_inc INCLUDE_DIRECTORIES)
get_directory_property(dir_def COMPILE_DEFINITIONS)
get_directory_property(dir_opt COMPILE_OPTIONS)
string(REGEX REPLACE " " ";" dir_opt "${dir_opt}")
set(cflags ${CMAKE_C_FLAGS})
set(cxxflags ${CMAKE_CXX_FLAGS})
if (buildtype)
set(cflags ${cflags} ${CMAKE_C_FLAGS_${buildtype}})
set(cxxflags ${cxxflags} ${CMAKE_CXX_FLAGS_${buildtype}})
endif ()
string(REGEX REPLACE " " ";" cflags "${cflags}")
string(REGEX REPLACE " " ";" cxxflags "${cxxflags}")
set(flags ${cflags} ${cxxflags})
foreach (item ${pkg})
string(REGEX REPLACE "/" "." item ${item})
list(APPEND _pkg "'${item}'")
endforeach()
string(REGEX REPLACE ";" "," pkg "${_pkg}")
set(PYCMAKE_PACKAGES "${pkg}")
foreach (ext ${extensions})
get_target_property(inc ${target} PYCMAKE_${ext}_INCLUDE_DIRECTORIES)
get_target_property(src ${target} PYCMAKE_${ext}_SOURCES)
get_target_property(lnk ${target} PYCMAKE_${ext}_LINK_LIBRARIES)
get_target_property(def ${target} PYCMAKE_${ext}_COMPILE_DEFINITIONS)
get_target_property(opt ${target} PYCMAKE_${ext}_COMPILE_OPTIONS)
pycmake_list_concat(inc ${dir_inc} ${inc})
pycmake_list_concat(def ${dir_def} ${def})
pycmake_list_concat(opt ${flags} ${dir_opt} ${opt})
# remove the python include dir and lib (which is obviously unecessary)
if(inc AND PYTHON_INCLUDE_DIRS)
list(REMOVE_ITEM inc ${PYTHON_INCLUDE_DIRS})
endif()
if(lnk AND PYTHON_LIBRARIES)
list(REMOVE_ITEM lnk ${PYTHON_LIBRARIES})
endif()
# wrap every string in single quotes (because python expects this)
foreach (item ${inc})
# project-provided headers must be bundled for sdist, so add them
# to the pycmake/include directory
get_filename_component(dstpath pycmake/include/${item} DIRECTORY)
string(REGEX REPLACE "${CMAKE_SOURCE_DIR}" "" dstpath "${dstpath}")
string(REGEX REPLACE "${CMAKE_BINARY_DIR}" "" dstpath "${dstpath}")
string(REGEX REPLACE "//" "/" dstpath "${dstpath}")
pycmake_is_system_path(syspath ${item})
if (NOT ${syspath})
file(COPY ${item} DESTINATION ${dstpath})
endif ()
get_filename_component(item ${item} NAME)
list(APPEND _inc "'${dstpath}/${item}'")
unset(dstpath)
endforeach ()
foreach (item ${src})
# setup.py is pretty grumpy and wants source files relative itself
# AND not upwards, so we must copy our entire source tree into the
# build dir
string(REGEX REPLACE "${CMAKE_SOURCE_DIR}" "" dstitem "pycmake/src/${item}")
string(REGEX REPLACE "${CMAKE_BINARY_DIR}" "" dstitem "${dstitem}")
string(REGEX REPLACE "//" "/" dstitem "${dstitem}")
configure_file(${item} ${CMAKE_CURRENT_BINARY_DIR}/${dstitem} COPYONLY)
list(APPEND _src "'${dstitem}'")
unset(dstitem)
endforeach ()
foreach (item ${opt})
list(APPEND _opt "'${item}'")
endforeach ()
set(_lnk "")
foreach (item ${lnk})
get_filename_component(_libdir ${item} DIRECTORY)
if (_libdir)
list(APPEND _dir '${_libdir}')
get_filename_component(item ${item} NAME_WE)
string(REGEX REPLACE "lib" "" item ${item})
endif ()
list(APPEND _lnk "'${item}'")
endforeach ()
# defines are a bit more work, because setup.py expects them as tuples
foreach (item ${def})
string(FIND ${item} "=" pos)
set(_val None)
string(SUBSTRING "${item}" 0 ${pos} _name)
if (NOT ${pos} EQUAL -1)
math(EXPR pos "${pos} + 1")
string(SUBSTRING "${item}" ${pos} -1 _val)
set(_val '${_val}')
endif ()
list(APPEND _def "('${_name}', ${_val})")
endforeach ()
if (_inc)
list(REMOVE_DUPLICATES _inc)
endif ()
if( _src)
list(REMOVE_DUPLICATES _src)
endif ()
if( _def)
list(REMOVE_DUPLICATES _def)
endif ()
if( _lnk)
list(REMOVE_DUPLICATES _lnk)
endif ()
# do not remote duplictes for compiler options, because some are
# legitemately passed multiple times, e.g. on clang for osx builds
# `-arch i386 -arch x86_64`
# then make the list comma-separated (for python)
string(REGEX REPLACE ";" "," inc "${_inc}")
string(REGEX REPLACE ";" "," src "${_src}")
string(REGEX REPLACE ";" "," def "${_def}")
string(REGEX REPLACE ";" "," opt "${_opt}")
string(REGEX REPLACE ";" "," lnk "${_lnk}")
string(REGEX REPLACE ";" "," dir "${_dir}")
# TODO: be able to set other name than ext
list(APPEND setup_extensions "Extension('${PYCMAKE_PACKAGE_NAME}.${ext}',
sources=[${src}],
include_dirs=[${inc}],
define_macros=[${def}],
library_dirs=[${dir}],
libraries=[${lnk}],
extra_compile_args=[${opt}])")
endforeach()
string(REGEX REPLACE ";" "," PYCMAKE_EXTENSIONS "${setup_extensions}")
# When extensions are built, headers aren't typically included for source
# dists, which are instead read from a manifest file. If a base is provided
# we copy that, then append. If no template is provided, overwrite so it's
# clean every time we append
if (PP_MANIFEST)
configure_file(${PP_MANIFEST} MANIFEST.in COPYONLY)
else ()
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/MANIFEST.in)
endif ()
# Make a best-effort guess finding header files, trying all common
# extensions
file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/MANIFEST.in
"recursive-include pycmake/include *.h *.hh *.H *.hpp *.hxx")
set(setup.py setup.py)
if (PP_OUTPUT)
set(setup.py ${PP_OUTPUT})
endif ()
configure_file(${template} ${setup.py})
endfunction ()
function(add_python_test TESTNAME PYTHON_TEST_FILE)
configure_file(${PYTHON_TEST_FILE} ${PYTHON_TEST_FILE} COPYONLY)
get_filename_component(name ${PYTHON_TEST_FILE} NAME)
get_filename_component(dir ${PYTHON_TEST_FILE} DIRECTORY)
add_test(NAME ${TESTNAME}
COMMAND ${PYTHON_EXECUTABLE} -m unittest discover -vs ${dir} -p ${name}
)
endfunction()
function(add_python_example pkg TESTNAME PYTHON_TEST_FILE)
configure_file(${PYTHON_TEST_FILE} ${PYTHON_TEST_FILE} COPYONLY)
add_test(NAME ${TESTNAME}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMAND ${PYTHON_EXECUTABLE} ${PYTHON_TEST_FILE} ${ARGN})
get_target_property(buildpath ${pkg} PACKAGE_BUILD_PATH)
pycmake_to_path_list(pythonpath "$ENV{PYTHONPATH}" ${buildpath})
set_tests_properties(${TESTNAME} PROPERTIES ENVIRONMENT "PYTHONPATH=${pythonpath}")
endfunction()

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# pycmake
**pycmake** is a CMake macro for testing that we have the necessary Python
modules in the necessary versions for our systems. The basic assumption of this
package is PEP 396 -- Module Version Numbers as layed out in
https://www.python.org/dev/peps/pep-0396/ . Here it says that a Python module
*should* expose a field `__version__`, that is, to obtain a module's version,
one may run
import module as m
print(m.__version__)
Unfortunately, not all Python modules expose a version number, like *inspect*.
Other Python modules expose several version numbers, e.g., one for the
underlying software and one for the python packaging, like *SQLite* and *PyQt*.
To handle the different ways of obtaining the version, one may explicitly state
the version *accessor* to use; `__version__` is the default.
For more information on module version numbers, see
[PEP 396](https://www.python.org/dev/peps/pep-0396/).
## Examples
The most vanilla example usage is the following, where we require *numpy*
version at least&nbsp;1.7.0, and any newer version is acceptable. Consider the
two CMake lines, whose behavior are identical:
python_module( numpy REQUIRED 1.7.0 )
python_module( numpy REQUIRED 1.7.0 MINIMUM )
However, sometimes we are phasing out an older Python module, in which case, we
can give the user a warning. By writing
python_module( scipy REQUIRED 1.5.1 OPTIONAL )
we are telling CMake to output a warning to the user if a *scipy* version
below&nbsp;1.5.1 is found, and to exit with an error if *scipy* is not found.
Yet other times, our systems do not work with newer versions than a certain
number. By writing
python_module( pandas REQUIRED 0.15.1 EXACT )
we ask CMake to fail if *pandas*&nbsp;0.15.1 is not installed, i.e., even if
*pandas*&nbsp;0.15.2 is installed.
More examples:
find_python_module( numpy REQUIRED 1.5.3 MINIMUM )
find_python_module( numpy REQUIRED 1.5.3 EXACT )
find_python_module( numpy REQUIRED 1.5.3 OPTIONAL )
find_python_module( numpy REQUIRED 1.5.3 )
find_python_module( numpy REQUIRED )
find_python_module( numpy OPTIONAL )
find_python_module( numpy REQUIRED 1.5.3 MINIMUM "__version__" )
Not every Python module exposes `__version__`, and some module exposes several
flags, like `version` and `apilevel`.
<!--
*SQLite2* users beware. They expose `sqlite_version_info`, `version`, and
`version_info`. There is a difference between the SQLite version (e.g.&nbsp;2
or&nbsp;3) and the *python-pysqlite* version, e.g.&nbsp;1.0.1. *SQLite2*
exposes `apilevel = '2.0'` and `version = '1.0.1'`. It is therefore possible to
get both `apilevel` and `version`, as well as `__version__` etc.
-->
Complex systems like SQLite and Qt exposes more than one version field. For
instance, SQLite&nbsp;2 vs *python-pysqlite1*. SQLite has version&nbsp;2.0,
whereas the Python package *python-pysqlite1* has version&nbsp;1.0.1. These are
accessible by calling
apilevel = '2.0'
version = '1.0.1'
It is possible to obtain these properties by invoking `python_module` providing
a fifth argument, the *version accessor* argument:
python_module( sqlite REQUIRED 2.0 MINIMUM "apilevel" )
python_module( sqlite REQUIRED 1.0.1 MINIMUM "version" )
python_module( numpy REQUIRED 1.7.1 MINIMUM "__version__" )
*PyQt4* does not export any version field. Importing *PyQt4.Qt* in Python
reveals fields
PYQT_VERSION_STR = '4.10.4'
QT_VERSION_STR = '4.8.6'
## Technicalities
This repo contains two files of interest. The `CMakeLists.txt` loads the more
interesting file `FindPythonModule.cmake`, and then provides some use cases.
`FindPythonModule.cmake` contains two macros, one main and one auxilliary:
* `macro( python_module_version module )`
* `macro( python_module module version )` &mdash; this is the interface
The first macro, `python_module_version`, checks if `module` is a Python
importable package, and if so, which version `module` has. The version is found
simply by the following Python program:
import package as py_m
print(py_m.__version__)
If this program fails, the status flag will be set to&nbsp;`1`, and the package
will be assumed to not exist. If the program succeeds, the output of the
program will be stored in the global cmake variable `PY_${package}` where
`${package}` is the name of the package given to the macro `python_module`.
The macro, `python_module(module version)` calls the function,
`python_module_version(module)` and checks if
1. The variable `PY_${module}` has been set. If the package is `REQUIRED`, then
the variable must have been set, otherwise we message a `SEND_ERROR`, and
CMake will fail. If the package is `OPTIONAL` and not found, we issue a
`WARNING`.
1. The we compare the version number found (the content of the variable
`PY_${module}`). The keywords `EXACT`, `MINIMUM` and `OPTIONAL` are
self-explanatory.

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# Test the module - assumes some packages are installed.
find_package( PythonInterp 2.6 REQUIRED )
include( ${CMAKE_SOURCE_DIR}/FindPythonModule.cmake )
python_module( ctypes )
python_module( numpy REQUIRED 1.8 )
python_module( pandas REQUIRED 0.18.1 EXACT )
python_module( matplotlib REQUIRED 1.2 MINIMUM )
python_module( PyQt4 REQUIRED 4.8 )
python_module( PyQt4.Qt REQUIRED 4.8 MINIMUM "QT_VERSION_STR" )
python_module( PyQt4.Qt REQUIRED 4.10 MINIMUM "PYQT_VERSION_STR" )
python_module( re REQUIRED 2.2.1 MINIMUM )
python_module( requests REQUIRED 2.2.1 EXACT )
python_module( inspect OPTIONAL )
#python_module( pandas REQUIRED 9.9.9 OPTIONAL ) # will warn but pass
python_module( cwrap QUIET )
python_module( cwrap QUIET 1.0)
python_module( no_such_module QUIET )
python_module( scipy QUIET 0.16.1 )
if (DEFINED PY_inspect)
# Here we can do stuff depending on having *inspect*
message(STATUS "We have inspect.")
else()
# And here we can do stuff when we do not have *inspect*
message(STATUS "We do not have inspect, ignoring ...")
endif()