Modify slightly cmake scripts to be able to generate doxygen API doc on Windows.

CMake/findPython.cmake

@@ -58,6 +58,7 @@ if(UNIX OR WIN32)
 		#message(STATUS $ENV{PYTHON2_PATH})
 		set(PYTHON_EXES $ENV{PYTHON2_PATH};$ENV{PYTHON3_PATH})
 		#message(STATUS "PYTHON_EXES=${PYTHON_EXES} set from environment.")
+		set(PYTHON_EXECUTABLE $ENV{PYTHON2_PATH}) # necessary for doxypypy
 	elseif ("$ENV{PYTHON_PATH}" MATCHES python)
 		set(PYTHON_EXE $ENV{PYTHON_PATH})
 		message(STATUS "PYTHON_EXE=$ENV{PYTHON_PATH} defined from environment variable")

gen_doc/CMakeLists.txt

@@ -16,10 +16,10 @@ if(BUILD_DOCUMENTATION)
 		# ./gen_doc/images/* files is duplicated in doc/html/ to call images documentation in the source code with relative path of image's files, from build directory.     
 		if(UNIX)
 			configure_file(${FAUST_DOC_SRC_DIR}/py_filter.sh.in ${PROJECT_BINARY_DIR}/doc/py_filter @ONLY)
-			configure_file(${FAUST_DOC_SRC_DIR}/doxymatlab/m2cpp.pl ${PROJECT_BINARY_DIR}/doc/m2cpp @ONLY)
 		elseif(WIN32)
 			configure_file(${FAUST_DOC_SRC_DIR}/py_filter.bat.in ${PROJECT_BINARY_DIR}/doc/py_filter.bat @ONLY)
-			file(COPY ${FAUST_DOC_SRC_DIR}/doxymatlab/m2cpp.bat ${PROJECT_BINARY_DIR}/doc/)
+			configure_file(${FAUST_DOC_SRC_DIR}/doxymatlab/m2cpp.bat ${PROJECT_BINARY_DIR}/doc/m2cpp.bat @ONLY)
+			configure_file(${FAUST_DOC_SRC_DIR}/doxymatlab/m2cpp.pl ${PROJECT_BINARY_DIR}/doc/m2cpp.pl @ONLY)
 		endif()
 		file(COPY ${FAUST_DOC_SRC_DIR}/images/ DESTINATION ${PROJECT_BINARY_DIR}/doc/html/ )
 		add_custom_target(doc ALL ${DOXYGEN_EXECUTABLE} ${PROJECT_BINARY_DIR}/doc/Doxyfile WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/doc COMMENT "Generating API documentation with Doxygen" VERBATIM)