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[gdcm.git] / gdcmPython / CMakeLists.txt
1 # gdcm Python wrapping stuff:
2
3 INCLUDE_DIRECTORIES(
4   ${GDCM_SOURCE_DIR}/src
5   ${PYTHON_INCLUDE_PATH}
6   ${GDCM_BINARY_DIR}/
7 )
8
9 #-----------------------------------------------------------------------------
10 # SWIG Wrapping
11 #
12
13 # CMake 2.0 will fully support Swig wrapping so split based on cmake version:
14
15 IF(${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 1.9)
16
17   # We need to pass that to swig to be sure all modules are generated in the proper dir
18   SET(CMAKE_SWIG_FLAGS "-outdir ${GDCM_BINARY_DIR}/gdcmPython")
19   # Looks like a bug to me in cmake 2.0.x:
20   SEPARATE_ARGUMENTS(CMAKE_SWIG_FLAGS)
21
22   FIND_PACKAGE(SWIG REQUIRED)
23   INCLUDE(${SWIG_USE_FILE})
24
25   #SET_SOURCE_FILES_PROPERTIES(gdcm.i PROPERTIES PYTHON ON)
26   SET_SOURCE_FILES_PROPERTIES(gdcm.i PROPERTIES CPLUSPLUS ON)
27   # Setting SWIG_FLAGS to "-includeall" at the following line looks like
28   # a bad idea since swig tries to recursively include all the referenced
29   # files, "including" the C++ <sstream>, <list>, <map>... Of course swig
30   # has no way of finding the path to those files (unless it is told by
31   # cmake) since they are related to the compiler installation layout.
32   # Anyhow, since this inclusion recursion is not necessary, just don't
33   # do it.
34   # Note: apparently the line is required in order to avoid a NOTFOUND
35   #       as argument of swig on invocation of make.
36   SET_SOURCE_FILES_PROPERTIES(gdcm.i PROPERTIES SWIG_FLAGS "")
37   SWIG_ADD_MODULE(gdcm python gdcm.i)  #gdcm_wrap.cxx
38   SWIG_LINK_LIBRARIES(gdcm gdcm ${PYTHON_LIBRARIES})
39
40   SET(GDCM_CXX_FLAGS ${CMAKE_SWIG_FLAGS})
41   # Get rid of -Wall / -W / -pedantic if exist
42   SET(CMAKE_CXX_FLAGS "")
43   # I guess I need to put them back on the this file:
44   SET_SOURCE_FILES_PROPERTIES(${GDCM_BINARY_DIR}/gdcmPython/gdcm_wrap.cxx
45                               PROPERTIES COMPILE_FLAGS "")
46 #  SET_TARGET_PROPERTIES(${GDCM_BINARY_DIR}/gdcmPython/gdcm_wrap.cxx
47 #                        PROPERTIES CMAKE_CXX_FLAGS "-foo")
48   
49 ELSE(${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 1.9)   
50
51   # As of 09/10/2003 there was no FindSWIG.cmake
52   # later we should use SWIG instead of swig
53   FIND_PROGRAM(SWIG_EXECUTABLE
54     NAMES swig-1.3 swig
55   )
56   
57   IF(NOT SWIG_EXECUTABLE)
58     MESSAGE(FATAL_ERROR "Swig could not be found wrapping is impossible")
59   ENDIF(NOT SWIG_EXECUTABLE)
60
61   # Build our custom command :
62   ADD_CUSTOM_COMMAND(
63     OUTPUT    ${GDCM_BINARY_DIR}/gdcmPython/gdcm_wrap.cxx
64     COMMAND   ${SWIG_EXECUTABLE}
65     ARGS      -python -c++ -I${GDCM_SOURCE_DIR}/src -o 
66               ${GDCM_BINARY_DIR}/gdcmPython/gdcm_wrap.cxx 
67               ${GDCM_SOURCE_DIR}/gdcmPython/gdcm.i 
68     DEPENDS   ${GDCM_SOURCE_DIR}/gdcmPython/gdcm.i
69     COMMENT   "Generating gdcm_wrap.cxx/gdcm.py based on gdcm.i"
70   )
71   # Since the file gdcm_wrap.cxx does not exist, mark it as GENERATED:
72   SET_SOURCE_FILES_PROPERTIES(${GDCM_BINARY_DIR}/gdcmPython/gdcm_wrap.cxx GENERATED)
73
74   ADD_LIBRARY(pygdcm gdcm_wrap.cxx)
75   TARGET_LINK_LIBRARIES(pygdcm
76     ${PYTHON_LIBRARY}
77     gdcm
78   )
79   # http://www.cmake.org/pipermail/cmake/2003-August/004190.html
80   #SET_TARGET_PROPERTIES(pygdcm PROPERTIES PREFIX "_")
81
82   # This swig command will also outputs gdcm.py :
83   SET_SOURCE_FILES_PROPERTIES(${GDCM_BINARY_DIR}/gdcmPython/gdcm.py GENERATED)
84
85   # Instead of a simple copy operation let create our own gdcm.py file:
86   # First read what swig dumped:
87   IF(EXISTS ${GDCM_BINARY_DIR}/gdcmPython/gdcm.py)
88     FILE(READ ${GDCM_BINARY_DIR}/gdcmPython/gdcm.py SWIG_GDCM_PY)
89   ENDIF(EXISTS ${GDCM_BINARY_DIR}/gdcmPython/gdcm.py)
90
91   # Then create the gdcm.py = gdcmVersion.py + gdcm.py (swig) file:
92   FILE(WRITE ${GDCM_BINARY_DIR}/bin/gdcmVersion.py
93     "import os\n"
94     "gdcmVERSION=\"${GDCM_VERSION}\"\n"
95     "GDCM_DATA_PATH=\"${GDCM_DATA_ROOT}\"\n\n"
96     ${SWIG_GDCM_PY}
97     )
98
99   # Seems like they want instead a file called gdcmPython.py
100   # Thus add the custom command to copy it to proper location:
101 #  ADD_CUSTOM_COMMAND(
102 #    TARGET pygdcm
103 #    POST_BUILD
104 #    COMMAND ${CMAKE_COMMAND}
105 #    ARGS -E copy 
106 #      ${GDCM_BINARY_DIR}/bin/gdcm.py 
107 #      ${GDCM_BINARY_DIR}/bin/gdcmPython.py
108 #  )
109
110   # Here comes the hack to rename the library to a more 'swig' compliant scheme"
111   SET(LIB_NAME ${CMAKE_SHARED_LIBRARY_PREFIX}pygdcm${CMAKE_SHARED_LIBRARY_SUFFIX})
112   SET(EXE_DIR ${GDCM_BINARY_DIR}/Executable)
113   IF(EXECUTABLE_OUTPUT_PATH)
114     SET(EXE_DIR ${EXECUTABLE_OUTPUT_PATH})
115   ENDIF(EXECUTABLE_OUTPUT_PATH)
116   SET(LIB_DIR ${GDCM_BINARY_DIR}/Library/Shared)
117   IF(LIBRARY_OUTPUT_PATH)
118     SET(LIB_DIR ${LIBRARY_OUTPUT_PATH})
119   ENDIF(LIBRARY_OUTPUT_PATH)
120
121   IF(WIN32 OR APPLE)
122     SET(SHARED_MUST_BE_IN_EXE_DIR 1)
123   ENDIF(WIN32 OR APPLE)
124
125   IF(NOT SHARED_MUST_BE_IN_EXE_DIR)
126     SET(EXE_DIR ${LIB_DIR}) 
127   ENDIF(NOT SHARED_MUST_BE_IN_EXE_DIR)
128
129   ADD_CUSTOM_COMMAND(
130     TARGET pygdcm
131     POST_BUILD 
132     COMMAND ${CMAKE_COMMAND} ARGS -E copy
133     ${LIB_DIR}/${CMAKE_CFG_INTDIR}/${LIB_NAME}
134     ${EXE_DIR}/${CMAKE_CFG_INTDIR}/_gdcm${CMAKE_SHARED_LIBRARY_SUFFIX}
135     )
136
137 ENDIF(${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 1.9)   
138
139
140 #-----------------------------------------------------------------------------
141 # VTK Wrapping
142
143 IF(GDCM_VTK)
144   # Include the VTK library
145   INCLUDE(${VTK_USE_FILE})
146
147   INCLUDE_DIRECTORIES(
148     ${GDCM_SOURCE_DIR}/vtk
149   )
150
151   SET(vtkgdcmPython_la_SOURCES
152       ${GDCM_SOURCE_DIR}/vtk/vtkGdcmReader.cxx
153   )
154   SET_SOURCE_FILES_PROPERTIES(vtkGdcmReaderPython.cxx GENERATED)
155   
156   # Configure Python module, which is the plugin itself
157   IF (GDCM_WRAP_PYTHON)
158     IF(NOT VTK_WRAP_PYTHON)
159       MESSAGE(FATAL_ERROR "Can't build gdcm python wrapping if VTK_WRAP_PYTHON is OFF" )
160     ENDIF(NOT VTK_WRAP_PYTHON)
161     VTK_WRAP_PYTHON2(vtkgdcmPython gdcmWrapSOURCES
162                    ${vtkgdcmPython_la_SOURCES})
163     # The C++ files must be made into a C++ library
164     ADD_LIBRARY(vtkgdcmPython SHARED ${gdcmWrapSOURCES})  #MODULE on apple ?
165     # set the libraries to link against
166     #SET_TARGET_PROPERTIES(${foobar} PROPERTIES PREFIX "")
167
168     #GET_TARGET_PROPERTY(swig_gdcm_fullpath "${SWIG_MODULE_gdcm_REAL_NAME}" LOCATION)
169     TARGET_LINK_LIBRARIES (vtkgdcmPython
170                            vtkgdcm
171                            vtkCommonPython
172                            vtkIOPython)
173   ENDIF (GDCM_WRAP_PYTHON)
174 ENDIF(GDCM_VTK)
175
176 # generate a setup.py according to VTK installation
177 # put it in subdir in order to not override old one
178
179 GET_FILENAME_COMPONENT(VTKPATH ${VTK_DIR}/../../ ABSOLUTE)
180 CONFIGURE_FILE(
181     ${GDCM_SOURCE_DIR}/gdcmPython/setup.py.in
182     ${GDCM_BINARY_DIR}/setup.py
183 )
184
185 #-----------------------------------------------------------------------------
186 # Install stuff:
187
188 # Cmake cannot handle installing since python wants stuff to be installed
189 # in /usr/lib/pythonx.x/site-package and not a a std /usr/lib
190 # Thus generate a setup.py file using distutils
191
192 # Create a gdcm.pth file:
193
194 FILE(WRITE ${GDCM_BINARY_DIR}/gdcmPython/gdcmVersion.py
195     "gdcmVERSION=\"${GDCM_VERSION}\"\n"
196     )
197
198 FILE(WRITE ${GDCM_BINARY_DIR}/gdcmPython/gdcm.pth
199     "gdcmPython\n"
200     )
201
202 FILE(WRITE ${GDCM_BINARY_DIR}/gdcmPython/__init__.py
203     "__all__ = [\"core\",\n"
204     "           \"vtk\",\n"
205     "          ]\n"
206     )
207
208 FILE(WRITE ${GDCM_BINARY_DIR}/gdcmPython/core.py
209     "import gdcm\n"
210     "GDCM_DATA_PATH     =\"${GDCM_DATA_ROOT}\"\n"
211     "GDCM_TEST_DATA_PATH=\"${GDCM_DATA_ROOT}\"\n"
212     )
213
214 IF(GDCM_VTK)
215   FILE(WRITE ${GDCM_BINARY_DIR}/gdcmPython/vtk.py
216     "import os\n"
217     "if os.name == 'posix':\n"
218     "  from libvtkgdcmPython import *\n"
219     "else:\n"
220     "  from vtkgdcmPython import *\n"
221     "GDCM_DATA_PATH     =\"${GDCM_DATA_ROOT}\"\n"
222     "GDCM_TEST_DATA_PATH=\"${GDCM_DATA_ROOT}\"\n"
223     )
224 ENDIF(GDCM_VTK)
225
226 #-----------------------------------------------------------------------------
227 # Add test from demo subdir:
228
229 SUBDIRS(demo)