From owner-help-octave at bevo dot che dot wisc dot edu  Tue Jan 21 10:25:11 1997
Subject: building 2.0.1 sunOS4.1.3
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Coco dot Djossou at emn dot fr, Philippe.Castagliola@emn.fr
Cc: help-octave at bevo dot che dot wisc dot edu
Date: Tue, 21 Jan 1997 10:23:37 -0600

On 21-Jan-1997, Djossou Coco <Coco dot Djossou at emn dot fr> wrote:

: c++ -c  -I. -I.. -I../liboctave -I../src -I../glob -I../libcruft/misc  -DHAVE_CONFIG_H  -fno-implicit-templates  -O sighandlers.cc
: sighandlers.cc: In function `void my_friendly_exit(const char *, int)':
: sighandlers.cc:128: passing `void (*)()' as argument 2 of `octave_set_signal_handler(int, void (*)(int))'
: sighandlers.cc: In function `void (* octave_set_signal_handler(int, void (*)(int)))(int)':
: sighandlers.cc:168: warning: ANSI C++ prohibits conversion from `(int)' to `(...)'

>From my current version of the INSTALL.OCTAVE file:

   * If you encounter errors like

          passing `void (*)()' as argument 2 of
            `octave_set_signal_handler(int, void (*)(int))'

     or

          warning: ANSI C++ prohibits conversion from `(int)' to `(...)'

     while compiling `sighandlers.cc', you may need to edit some files
     in the gcc include subdirectory to add proper prototypes for
     functions there.  For example, Ultrix 4.2 needs proper
     declarations for the `signal()' and the `SIG_IGN' macro in the
     file `signal.h'.

     On some systems the `SIG_IGN' macro is defined to be something like
     this:

          #define  SIG_IGN  (void (*)())1

     when it should really be something like:

          #define  SIG_IGN  (void (*)(int))1

     to match the prototype declaration for `signal()'.  This change
     should also be made for the `SIG_DFL' and `SIG_ERR' symbols.  It
     may be necessary to change the definitions in `sys/signal.h' as
     well.

     The gcc fixincludes/fixproto script should probably fix these
     problems when gcc installs its modified set of header files, but I
     don't think that's been done yet.


Thanks,

jwe