Re: [Dev-luatex] luatex not compiling

[Jjgod Jiang <gzjjgod@gmail.com>]

Hi Taco,

On Mon, 24 Dec 2007, Taco Hoekwater wrote:
> Perhaps not any more in 10.5? Something changed from 10.4 to 10.5 that
> broke luatex's build process. Just the building though, pre-compiled
> binaries work fine. What exactly has changed is a mystery so far.

You're right, I think it has been changed in 10.5, the following text
is copied from sigaltstack(2) in 10.5:

     LEGACY SYNOPSIS
          #include <sys/types.h>
          #include <signal.h>

          The include file <sys/types.h> is necessary.

          struct sigaltstack {
                  char   *ss_sp;
                  int     ss_size;
                  int     ss_flags;
          };

          int
          sigaltstack(const struct sigaltstack *ss,
                      struct sigaltstack *oss);

          The variable types have changed.  Specifically, the
          sigaltstack struct is no longer used.

     COMPATIBILITY
          Use of the (obsolete) sigaltstack struct will cause
          compiler diagnostics.  Use stack_t, defined in
          <signal.h>.

I just checked out the latest luatex source from svn, with
the following patch, luatex builds fine on 10.5:

Index: src/texk/web2c/lib/texmfmp.c
===================================================================
--- src/texk/web2c/lib/texmfmp.c	(revision 972)
+++ src/texk/web2c/lib/texmfmp.c	(working copy)
@@ -405,7 +405,11 @@
  #ifdef WIN32
      SetUnhandledExceptionFilter ((LPTOP_LEVEL_EXCEPTION_FILTER) 
&segv_handler_filter);
  #else
+#if __DARWIN_UNIX03
+    stack_t sigstk;
+#else
      struct sigaltstack sigstk;
+#endif
      struct sigaction segv_act;
      sigstk.ss_sp = xmalloc(SIGSTKSZ);
      sigstk.ss_size = SIGSTKSZ;

HTH.

- Jiang
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