QGIS/python/CMakeLists.txt

IF (WIN32)
  SET(BINDINGS_CORE_LIB ${CMAKE_CURRENT_BINARY_DIR}/core/core.pyd)
  SET(BINDINGS_GUI_LIB  ${CMAKE_CURRENT_BINARY_DIR}/gui/gui.pyd)
  SET(QGIS_CORE_LIB     ${CMAKE_BINARY_DIR}/src/core/libqgis_core.dll)
  SET(QGIS_GUI_LIB      ${CMAKE_BINARY_DIR}/src/gui/libqgis_gui.dll)
ELSE (WIN32)
  SET(BINDINGS_CORE_LIB ${CMAKE_CURRENT_BINARY_DIR}/core/core.so)
  SET(BINDINGS_GUI_LIB  ${CMAKE_CURRENT_BINARY_DIR}/gui/gui.so)
  SET(QGIS_CORE_LIB     ${CMAKE_BINARY_DIR}/src/core/libqgis_core.so)
  SET(QGIS_GUI_LIB      ${CMAKE_BINARY_DIR}/src/gui/libqgis_gui.so)
ENDIF (WIN32)

SET (BINDINGS_LIBS ${BINDINGS_CORE_LIB} ${BINDINGS_GUI_LIB})

SET (BINDINGS_CORE_MAKEFILE ${CMAKE_CURRENT_BINARY_DIR}/core/Makefile)
SET (BINDINGS_GUI_MAKEFILE  ${CMAKE_CURRENT_BINARY_DIR}/gui/Makefile)


# 'python' target will force to build bindings libs for core and gui
ADD_CUSTOM_TARGET (python ALL DEPENDS ${BINDINGS_CORE_LIB} ${BINDINGS_GUI_LIB})

# don't run python before the libs are built
ADD_DEPENDENCIES (python qgis_core qgis_gui)


# Step 1: during configuration
# create file configure.py from configure.py.in
CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/configure.py.in
               ${CMAKE_CURRENT_BINARY_DIR}/configure.py)

# Step 2: during make
# run python configure.py
# it will run SIP utility to generate sources and will prepare makefiles
# should be run everytime core or gui library has been changed
ADD_CUSTOM_COMMAND(OUTPUT ${BINDINGS_CORE_MAKEFILE} ${BINDINGS_GUI_MAKEFILE} PRE_BUILD
                   COMMAND ${PYTHON_EXECUTABLE}
                   ARGS ${CMAKE_CURRENT_BINARY_DIR}/configure.py
		   DEPENDS ${QGIS_CORE_LIB} ${QGIS_GUI_LIB})

# Step 3: run make in core and gui subdirs
ADD_CUSTOM_COMMAND(OUTPUT ${BINDINGS_CORE_LIB} PRE_LINK
                   COMMAND ${CMAKE_MAKE_PROGRAM}
                   WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/core
                   DEPENDS ${BINDINGS_CORE_MAKEFILE})
ADD_CUSTOM_COMMAND(OUTPUT ${BINDINGS_GUI_LIB} PRE_LINK
                   COMMAND ${CMAKE_MAKE_PROGRAM}
                   WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/gui
                   DEPENDS ${BINDINGS_GUI_MAKEFILE})


# python's site-packages dir: bindings will be installed here
IF (UNIX)
  SET (CMD "
import sys
v = sys.version_info
print sys.exec_prefix + '/lib/python' + str(v[0]) + '.' + str(v[1]) + '/site-packages'
")
ELSE (UNIX)
  SET (CMD "
import sys
print sys.exec_prefix + '/lib/site-packages'
")
ENDIF (UNIX)

EXEC_PROGRAM(${PYTHON_EXECUTABLE} ARGS -c "\"${CMD}\"" OUTPUT_VARIABLE SITE_PKG_PATH)

# Step 4: install built libs to python's site packages
INSTALL(FILES __init__.py ${CMAKE_CURRENT_BINARY_DIR}/qgisconfig.py ${BINDINGS_LIBS} DESTINATION ${SITE_PKG_PATH}/qgis)