[ds6-devel] _PATH_BSHELL broken?

[Chris Leishman]

On Tuesday, January 21, 2003, at 03:08 PM, Mauro Tortonesi wrote:
<snip>
> misc.c:129: `_PATH_DEVNULL' undeclared (first use in this function)
> misc.c:129: (Each undeclared identifier is reported only once
> misc.c:129: for each function it appears in.)
> misc.c:183: `_PATH_BSHELL' undeclared (first use in this function)
> make[2]: *** [misc.o] Error 1
> make[2]: Leaving directory `/home/mauro/code/cvs/nc6/src'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/home/mauro/code/cvs/nc6'
> make: *** [all] Error 2
>
> this should be due to the fact that the macros in config/paths.m4 do 
> not
> define _PATH_DEVNULL and _PATH_BSHELL in config.h.

Ok...more info required - because this just shouldn't happen.

First off, the HEADER_PATHS macro checks for the existence of the 
'paths.h' header, and sets HAVE_PATHS_H if it finds it.

The paths.h header, on many systems, defines _PATH_BSHELL and 
_PATH_DEVNULL as appropriate.  However, to compensate for the headers 
that don't have paths.h or it doesn't contain these, the PATH_BSHELL 
and PATH_DEVNULL macros do the following:

- Call HEADER_PATHS if it hasn't already been called (uses AC_REQUIRE). 
  This means that HEADER_PATHS doesn't need to be specifically mentioned 
in configure.ac.

- If the paths.h header is available (HEADER_PATHS set 
ds6_have_paths_h=yes), then it looks for the definition of _PATH_BSHELL 
in the header file.

- If it doesn't find it, then it searches for an appropriate 
replacement (/bin/sh) and calls AC_DEFINE_UNQUOTED to add this to the 
config.h file.  If it can't find a replacement, then AC_MSG_ERROR is 
called.

So if this is working properly there should be no way that _PATH_BSHELL 
isn't defined in either paths.h or config.h and configure still 
succeeds.

Can you check the configure output?  Perhaps send me the config.log if 
you want?

Regards,
Chris