Weirdly generated C code

Hi,

when trying to build M2Crypto with swig 3.0.12 and gcc 7.0.1 
20170327 on Fedora/Rawhide. Swig generates this C file
(plain C, not C++) 
https://mcepl.fedorapeople.org/tmp/_m2crypto_wrap.c.bz2

and when I try to build it with GCC I get the following errors 
(the full log is at 
https://mcepl.fedorapeople.org/tmp/python-clean-build-log.txt ).

Any ideas how to make it working? Another problem is that 
I would need a solution which works from swig 2.0.10 upwards as 
M2Crypto should be able to be build and maintained on RHEL-7 as 
well. Any help?

Best,

Matěj

-- 
https://matej.ceplovi.cz/blog/, Jabber: [email protected]
GPG Finger: 3C76 A027 CA45 AD70 98B5  BC1D 7920 5802 880B C9D8
  
Of course I'm respectable. I'm old. Politicians, ugly buildings,
and whores all get respectable if they last long enough.
       --John Huston in "Chinatown."

====================================================================
SWIG/_m2crypto_wrap.c: In function ‘init_m2crypto’:
SWIG/_m2crypto_wrap.c:33295:79: warning: implicit declaration of function ‘SWIG_From_wchar_t’; did you mean ‘SWIG_FromCharPtr’? [-Wimplicit-function-declaration]
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "__WCHAR_MAX",SWIG_From_wchar_t((wchar_t)((0x7fffffff+L\'\\0\'))));
                                                                                ^~~~~~~~~~~~~~~~~
                                                                                SWIG_FromCharPtr
SWIG/_m2crypto_wrap.c:33295:120: error: stray ‘\’ in program
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "__WCHAR_MAX",SWIG_From_wchar_t((wchar_t)((0x7fffffff+L\'\\0\'))));
                                                                                                                         ^
SWIG/_m2crypto_wrap.c:33295:121: warning: missing terminating ' character
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "__WCHAR_MAX",SWIG_From_wchar_t((wchar_t)((0x7fffffff+L\'\\0\'))));
                                                                                                                          ^
SWIG/_m2crypto_wrap.c:33295:121: error: missing terminating ' character
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "__WCHAR_MAX",SWIG_From_wchar_t((wchar_t)((0x7fffffff+L\'\\0\'))));
                                                                                                                          ^~~~~~~~~~~
SWIG/_m2crypto_wrap.c:33295:119: error: ‘L’ undeclared (first use in this function)
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "__WCHAR_MAX",SWIG_From_wchar_t((wchar_t)((0x7fffffff+L\'\\0\'))));
                                                                                                                        ^
SWIG/_m2crypto_wrap.c:33295:119: note: each undeclared identifier is reported only once for each function it appears in
SWIG/_m2crypto_wrap.c:33296:3: error: expected ‘)’ before ‘SWIG_Python_SetConstant’
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "__WCHAR_MIN",SWIG_From_int((int)((-(0x7fffffff+L'\0') -1))));
    ^~~~~~~~~~~~~~~~~~~~~~~
SWIG/_m2crypto_wrap.c:33345:118: error: stray ‘\’ in program
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "WCHAR_MAX",SWIG_From_wchar_t((wchar_t)((0x7fffffff+L\'\\0\'))));
                                                                                                                       ^
SWIG/_m2crypto_wrap.c:33345:119: warning: missing terminating ' character
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "WCHAR_MAX",SWIG_From_wchar_t((wchar_t)((0x7fffffff+L\'\\0\'))));
                                                                                                                        ^
SWIG/_m2crypto_wrap.c:33345:119: error: missing terminating ' character
    SWIG_Python_SetConstant(d, d == md ? public_interface : NULL, "WCHAR_MAX",SWIG_From_wchar_t((wchar_t)((0x7fffffff+L\'\\0\'))));
                                                                                                                        ^~~~~~~~~~~
SWIG/_m2crypto_wrap.c:33678:1: error: expected declaration or statement at end of input
  }

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