[Sablevm-developer] SA_SIGINFO undefined

[Julio M. M. V. <jm...@me...>]

Hi again,

the last problem I found while building sablevm under NetBSD is that it didn't
find SA_SIGINFO defined.  Checked the sources, and <signal.h> is included
correctly, so the problem is coming from somewhere else.

Digging a bit in configure, I found that it defines _POSIX_C_SOURCE.  The
problem is that defining this disables SA_SIGINFO, because siginfo is not
POSIX compliant.  According to the siginfo(2) manpage:

STANDARDS
     The siginfo_t type conforms to X/Open System Interfaces and Headers
     Issue 5 (``XSH5'').

Removing that definition lets the code work (because, SA_SIGINFO is defined
if no _* macros are explicitly defined), but I don't think this is the
solution you want.

Instead, and according to the standards text I posted before, defining
_XOPEN_SOURCE to 500 lets it work fine.  This seems better, and is easy
to fix:

--- configure.ac.orig	2004-03-20 23:02:08.000000000 +0100
+++ configure.ac
@@ -21,6 +21,7 @@ AC_DEFINE_UNQUOTED(_SABLEVM_PACKAGE_VERS
 
 AC_DEFINE(_REENTRANT,1,link with reentrant library functions)
 AC_DEFINE(_POSIX_C_SOURCE,199506L,link with POSIX library functions)
+AC_DEFINE(_XOPEN_SOURCE,500,link with XOpen library functions)
 
 dnl *** uncomment if you want to insert a magic value in every object instance for debugging ***
 dnl AC_DEFINE(MAGIC,1,put "SableVM" in every instance)

Cheers

-- 
Julio M. Merino Vidal <jm...@me...>
The NetBSD Project - http://www.NetBSD.org/