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October 07, 2004

Building OpenBabel under MinGW

1. gettimeofday()

This post on Building GNU Chess 5.07 on MinGW/gcc actually addresses a general problem with MinGW - it doesn't support the gettimeofday() call.

This fix from Anders Carlsson addresses that:

---- In common.h after #include <sys/time>, I added the following:


   /* These are winbase.h definitions, but to avoid including

      tons of Windows related stuff, it is reprinted here  */

   typedef struct _FILETIME {

        unsigned long dwLowDateTime;

        unsigned long dwHighDateTime;

   } FILETIME;

   void __stdcall GetSystemTimeAsFileTime(FILETIME*);

   

   void gettimeofday(struct timeval* p, void* tz /* IGNORED */);

---- and into main.c, I put the actual gettimeofday function:

   void gettimeofday(struct timeval* p, void* tz /* IGNORED */){

     union {

       long long ns100; /*time since 1 Jan 1601 in 100ns units */

       FILETIME ft;

     } _now;

     GetSystemTimeAsFileTime( &(_now.ft) );

     p->tv_usec=(long)((_now.ns100 / 10LL) % 1000000LL );

     p->tv_sec= (long)((_now.ns100-(116444736000000000LL))/10000000LL);

     return;

   }

----

Anders's original post was in the Redhat GDB mailing list.

2. rindex()

rindex() is unresolved ...

Danny Smith has this to say on the MinGW forum on SourceForge:

index, rindex are non-ANSI version of strchr. strrchr respectivley.
 msvcrt.dll exports only the ANSI names.  
   
 Change the references to the non-ANSI names to strchr and strrchr ... 

3. Still working on it ... currently having problems with resolving stdcall namemangled GetSystemTimeAsFileTime()

...

Posted by daen at October 7, 2004 01:17 AM