GMSHPY_INSTALL_DIRECTORY, ENABLE_GMSHPY_SOURCE_PACKAGE

wrappers/gmshpy/CMakeLists.txt

@@ -11,6 +11,10 @@ set(SWIG_MODULES
   gmshSolver
   gmshMesh
 )
+if (NOT GMSHPY_INSTALL_DIRECTORY)
+  execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "from distutils import sysconfig; print (sysconfig.get_python_lib(1,0,prefix='${CMAKE_INSTALL_PREFIX}'))" OUTPUT_VARIABLE PYTHON_MODULE_PATH OUTPUT_STRIP_TRAILING_WHITESPACE)
+  set(GMSHPY_INSTALL_DIRECTORY ${PYTHON_MODULE_PATH}/gmshpy CACHE STRING "python wrappers installation directory")
+endif (NOT GMSHPY_INSTALL_DIRECTORY)
 
 # code backported from CMake git version, see CMake bug 4147
 MACRO(SWIG_GET_WRAPPER_DEPENDENCIES swigFile genWrapper language DEST_VARIABLE)
@@ -60,18 +64,10 @@ MACRO(SWIG_GET_WRAPPER_DEPENDENCIES swigFile genWrapper language DEST_VARIABLE)
   ENDIF(NOT ${swig_getdeps_error} EQUAL 0)
 ENDMACRO(SWIG_GET_WRAPPER_DEPENDENCIES)
 
-option(ENABLE_PYTHON_LIB_API "Export all C header files needed to build the python library" OFF)
-if(ENABLE_PYTHON_LIB_API)
-  set(GMSH_API ${GMSH_API} Geo/Curvature.h Mesh/Generator.h 
-      Mesh/meshGFaceLloyd.h Numeric/DivideAndConquer.h Post/PViewFactory.h
-      Solver/linearSystemPETSc.h Fltk/FlGui.h Solver/functionSpace.h
-      Solver/STensor43.h Solver/sparsityPattern.h Solver/SElement.h
-      Solver/groupOfElements.h PARENT_SCOPE)
-endif(ENABLE_PYTHON_LIB_API)
-
 include(${SWIG_USE_FILE})
 include_directories(${PYTHON_INCLUDE_PATH})
 
+option(ENABLE_GMSHPY_SOURCE_PACKAGE "Instead of generating the python bindings for the current python executable, generate a source package that can be used to generate the bindings without requiring the gmsh source code" OFF)
 set(GMSH_PYTHON_MODULES_INCLUDE_CODE "")
 foreach(module ${SWIG_MODULES})
   set_source_files_properties(${module}.i PROPERTIES CPLUSPLUS ON)
@@ -91,12 +87,17 @@ foreach(module ${SWIG_MODULES})
   set(GMSH_PYTHON_MODULES_INCLUDE_CODE 
       "${GMSH_PYTHON_MODULES_INCLUDE_CODE}from gmshpy.${module} import *\n")
   list(APPEND GMSHPY_DEPENDS "${module}PYTHON_wrap.cxx")
+
+  if (NOT ENABLE_GMSHPY_SOURCE_PACKAGE)
+    install(TARGETS ${SWIG_MODULE_${module}_REAL_NAME} DESTINATION ${GMSHPY_INSTALL_DIRECTORY})
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${module}.py DESTINATION ${GMSHPY_INSTALL_DIRECTORY})
+  endif (NOT ENABLE_GMSHPY_SOURCE_PACKAGE)
   if(APPLE)
     set_target_properties("_${module}" PROPERTIES LINK_FLAGS "-undefined suppress -flat_namespace")
   endif(APPLE)
 endforeach(module)
 
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/__init__.py.in ${CMAKE_CURRENT_BINARY_DIR}/__init__.py.orig)
+if (NOT ENABLE_GMSHPY_SOURCE_PACKAGE)
   IF(HAVE_MPI)
     # this hack is only required for openmpi compiled with dynamic modules
     # unfortunately I do not know how to detect this situation => I always enable it
@@ -108,7 +109,19 @@ IF(HAVE_MPI)
       ENDIF (${lib} MATCHES ".*libmpi.*")
     ENDFOREACH (lib)
   ENDIF(HAVE_MPI)
+endif (NOT ENABLE_GMSHPY_SOURCE_PACKAGE)
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/__init__.py.in ${CMAKE_CURRENT_BINARY_DIR}/__init__.py)
+if (NOT ENABLE_GMSHPY_SOURCE_PACKAGE)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/__init__.py DESTINATION ${GMSHPY_INSTALL_DIRECTORY})
+endif (NOT ENABLE_GMSHPY_SOURCE_PACKAGE)
+
+if(ENABLE_GMSHPY_SOURCE_PACKAGE)
+  set(GMSH_API ${GMSH_API} Geo/Curvature.h Mesh/Generator.h 
+      Mesh/meshGFaceLloyd.h Numeric/DivideAndConquer.h Post/PViewFactory.h
+      Solver/linearSystemPETSc.h Fltk/FlGui.h Solver/functionSpace.h
+      Solver/STensor43.h Solver/sparsityPattern.h Solver/SElement.h
+      Solver/groupOfElements.h PARENT_SCOPE)
+
 
   string(REPLACE ";" "\", \"" GMSH_PYTHON_MODULES "${SWIG_MODULES}")
   set(GMSH_PYTHON_MODULES "\"${GMSH_PYTHON_MODULES}\"")
@@ -162,3 +175,4 @@ set (GMSH_PYTHON_EXTRA_INCLUDE
   foreach (file ${GMSH_PYTHON_EXTRA_INCLUDE})
     install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/../../${file} DESTINATION gmshpy/extra_include)
   endforeach(file)
+endif(ENABLE_GMSHPY_SOURCE_PACKAGE)