Win32 Install Error

[philipathomas]

Hi All,

Stumbled on a install problem on windows 7 which I'm guessing has something to do with the native windows compiler but google search does not seem to have a fix. Install output bellow, any suggestions on how to fix this is appreciated. Thanks, Phil

C:\scripts\GIT\easysnmp>python setup.py install
'net-snmp-config' is not recognized as an internal or external command,
operable program or batch file.
C:\Python34\lib\site-packages\setuptools-18.2-py3.4.egg\setuptools\dist.py:285: UserWarning: Normalizing '0.2.5-dev' to '0.2.5.dev
0'
running install
running bdist_egg
running egg_info
creating easysnmp.egg-info
writing dependency_links to easysnmp.egg-info\dependency_links.txt
writing top-level names to easysnmp.egg-info\top_level.txt
writing easysnmp.egg-info\PKG-INFO
writing manifest file 'easysnmp.egg-info\SOURCES.txt'
reading manifest file 'easysnmp.egg-info\SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'easysnmp.egg-info\SOURCES.txt'
installing library code to build\bdist.win32\egg
running install_lib
running build_py
creating build
creating build\lib.win32-3.4
creating build\lib.win32-3.4\easysnmp
copying easysnmp\compat.py -> build\lib.win32-3.4\easysnmp
copying easysnmp\easy.py -> build\lib.win32-3.4\easysnmp
copying easysnmp\exceptions.py -> build\lib.win32-3.4\easysnmp
copying easysnmp\helpers.py -> build\lib.win32-3.4\easysnmp
copying easysnmp\session.py -> build\lib.win32-3.4\easysnmp
copying easysnmp\utils.py -> build\lib.win32-3.4\easysnmp
copying easysnmp\variables.py -> build\lib.win32-3.4\easysnmp
copying easysnmp__init__.py -> build\lib.win32-3.4\easysnmp
running build_ext
building 'easysnmp.interface' extension
creating build\temp.win32-3.4
creating build\temp.win32-3.4\Release
creating build\temp.win32-3.4\Release\easysnmp
C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -IC:\Python34\include -IC:
Python34\include /Tceasysnmp/interface.c /Fobuild\temp.win32-3.4\Release\easysnmp/interface.obj -Wno-unused-function
cl : Command line error D8021 : invalid numeric argument '/Wno-unused-function'
error: command 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\cl.exe' failed with exit status 2

C:\scripts\GIT\easysnmp>python setup.py build
'net-snmp-config' is not recognized as an internal or external command,
operable program or batch file.
C:\Python34\lib\site-packages\setuptools-18.2-py3.4.egg\setuptools\dist.py:285: UserWarning: Normalizing '0.2.5-dev' to '0.2.5.dev
0'
running build
running build_py
running build_ext
building 'easysnmp.interface' extension
C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -IC:\Python34\include -IC:
Python34\include /Tceasysnmp/interface.c /Fobuild\temp.win32-3.4\Release\easysnmp/interface.obj -Wno-unused-function
cl : Command line error D8021 : invalid numeric argument '/Wno-unused-function'
error: command 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\cl.exe' failed with exit status 2

[nnathan]

I've never tried to compile in Win32, but I think this is an obvious incompatibility in the arguments passed to the compiler. I think this can be rectified in the setup.py by changing this line to read compiler_args=[].

If you manage to get it to work in Win32, I'll be happy to patch the setup.py to add Win32 conditionals.

Furthermore, I notice 'net-snmp-config' is not recognized as an internal or external command,. I don't know how well net-snmp compiles or plays nicely in Windows.

[fgimian]

Yep, as Naveen mentioned, I really don't think we can target Windows as a compatible platform for this library. It really was designed and tested on Linux only.

As such, I will be closing this case.

Cheers
Fotis

[kamakazikamikaze]

I've actually been playing around with trying to make this compile on Windows today. I've made a little (if truly any) progress. I didn't realize how truly terrible/rusty I am with C/C++ until I spent the last few hours working with errors.

Thus far I have:

• Omit '-Wno-unused-function' if the platform is win32
• Converted GCC flags for --debug to potentially Windows-equivalent ones
  • -Wall => /Wall
  • -O0 => /Od
  • -g => /Zi
• Browse the registry for the Net-SNMP key to retrieve the base directory
• Potentially identified the correct libs values to pass

This, of course, opened up a whole can of worms with cross-platform compatibility. So in interfaces.c I've had to add:

#ifdef _MSC_VER

typedef __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
typedef int mode_t;

#else
#include <stdint.h>
#endif
// I could probably merge these two, but I can clean that up later
#ifdef _WIN32
#include <winsock2.h>
#else
#include <arpa/inet.h>
#include <netdb.h>
#endif

Now I'm just encountering an issue with some enumerators, specifically:
. . .\easysnmp\easysnmp\interface.c(107) : error C2059: syntax error : 'constant'
which points to:
enum { INFO, WARNING, ERROR, DEBUG, EXCEPTION };

I don't see any of these being predefined macros in VS 2010. I suppose it could be ERROR because I later see:
\easysnmp\easysnmp\interface.c(2789) : error C2065: 'DEBUG' : undeclared identifier
\easysnmp\easysnmp\interface.c(3624) : error C2065: 'EXCEPTION' : undeclared identifier

I guess I should open this up as a Visual Studio project to get more details,

[kamakazikamikaze]

Ok, it's definitely ERROR. I'm assuming that it's supposed to work since it's coming from net-snmp/net-snmp-includes.h?

EDIT

Just to invite a little humor, I felt like I was taking a 100-level CS course all over again by cutting and pasting this block around to figure out where the issue was.

#ifdef ERROR
#error Error is defined
#elif defined DEBUG
#error Debug is defined
#elif defined WARNING
#error Warning is defined
#elif defined INFO
#error Info is defined
#elif defined EXCEPTION
#error Exception is defined
#endif