[Vm-dev] latest sources removal platforms/unix/vm/sunos.h

[stes@PANDORA.BE]

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After experimenting with lseek and lseek64, the following also could help:

bash-4.4$ cat fileoffsetbits.c 

#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>

int main(int argc,char *argv[])
{
  printf("_FILE_OFFSET_BITS is %i\n",_FILE_OFFSET_BITS);
}

bash-4.4$ cc -m64 fileoffsetbits.c 
bash-4.4$ ./a.out
_FILE_OFFSET_BITS is 64
bash-4.4$ cc -m32 fileoffsetbits.c 
bash-4.4$ ./a.out
_FILE_OFFSET_BITS is 32
bash-4.4$ cc -m32 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 fileoffsetbits.c 
bash-4.4$ ./a.out
_FILE_OFFSET_BITS is 64


The lfcompile manpage on Solaris says that one possibility is to compile with the above -D flags to support large files on 32bit executables.

This seems an issue that is also related to the configure.ac test
for AC_SYS_LARGEFILE

But that sets the _FILE_OFFSET_BITS in the "config.h".

So then it is an issue of having to #include config.h before the <sys/types.h>


Anyway, the SunOS 32bit VM used to work, but currently has this (minor) issue.

It is minor because it seems solvable by setting the -D options in the mvm script.

If I use the following patch it works:

- --- a/build.sunos32x86/squeak.stack.spur/build/mvm
+++ b/build.sunos32x86/squeak.stack.spur/build/mvm
@@ -10,7 +10,7 @@ esac
 # Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqstkspursunosht/usr
 # Some gcc versions create a broken VM using -O2
- -OPT="-g -DAIO_DEBUG -DNDEBUG -DDEBUGVM=0"
+OPT="-g -DAIO_DEBUG -DNDEBUG -DDEBUGVM=0 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"


That is probably the easiest way to get the old behavior back.


Regards,
David Stes



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