When I try to use "/opt/lo/bin/make vs2013-ide-integration" to generate files for Visual Studio development, it print out thousands of lines saying that 

"XXX.cxx in project XXX does not exist". 

Then I open the .sln files in the source directory, nothing is included in the project. But I am quite sure that libreoffce was built within my source directory.
After some investigation, I found something weird. At the "GbuildParser" class in the script "bin/vs2013-ide-integration", it seems to uses a set of regex to match some basic information of the project, such as 

class GbuildParser:

...
    srcdirpattern = re.compile('^SRCDIR = (.*)')
    builddirpattern = re.compile('^BUILDDIR = (.*)')
    instdirpattern = re.compile('^INSTDIR = (.*)')
...

which matches source directory and build directory in makefiles. What make me confused is that it will also include some characters invalid in a path, such as '\n' and '\r' on my computer, so the file searching will fail with these characters in next steps. For example, there is a variable recording the actual source directory called "GbuildParser.srcdir", and it will end up with the charater '\r' on my computer and it will return a invalid path. When I modify the line in "bin/gbuild-to-ide" from 

     self.srcdir = srcdirmatch.group(1)

to

     self.srcdir = srcdirmatch.group(1).strip()

Things get better and all the files are included in the VS project file.

Since I am not familiar with libreoffice source code, I don't know if I am doing the right thing. Could anyone take a look at this? Appreciate your help!