Re: patch for gettextP.h, hppa2.0w-hp-hpux11.00, SWAP

[Bruno Haible]

Michael Elizabeth Chastain wrote:
> Here is what's going on:
>
>   gdb 6.0 has an old copy of intl/
>   gdb 6.0 also has libiberty/ that was autoconf'ed with autoconf 2.13.
>   libiberty/configure is the first configure script to run,
>     so it checks for 'inline' and caches the result
>   libiberty/configure checks for 'inline'
>   libiberty/configure does not check for 'static inline'
>   libiberty/configure decides that 'inline' is supported
>   later on, intl/gettextP.h uses 'static inline'

... and gdb uses a config.cache file across all directories (whereas the
default in recent autoconfs is to not create a config.cache file; although
it admittedly is slower to check for things several times, it's the only
choice if different subdirectories have configure scripts made with different
versions of autoconf or libtool).

> gcc -std=iso9899:1990 does not allow 'static inline',
> so I think that 'static inline' is not in the standard.

gcc supports either both "inline" and "static inline" or neither:

$ gcc -c -std=iso9899:1990 normal-inline.c static-inline.c
normal-inline.c:1: syntax error before "int"
static-inline.c:1: syntax error before "int"
$ gcc -c -std=iso9899:199409 normal-inline.c static-inline.c
normal-inline.c:1: syntax error before "int"
static-inline.c:1: syntax error before "int"
$ gcc -c -std=iso9899:1999 normal-inline.c static-inline.c

> gdb 6.1 is going to have a new libiberty/configure that checks
> for both 'inline' and 'static inline'.  This ought to disallow
> 'inline' on hpux 11.00 with the particular ansi c compiler that
> you have.

See also the autoconf ChangeLog:

2002-03-28  Kevin Ryde  <address@hidden>

        * lib/autoconf/c.m4 (AC_C_INLINE): Test with a typedef return value,
        to avoid versions of HP C which don't allow that.

2001-02-19  Paul Eggert  <address@hidden>

        * aclang.m4 (AC_C_INLINE): Define "inline" to empty if the
        compiler doesn't support 'static inline'.  This is needed for
        Encore Umax-3.0.9.16b.

So you see, the difference that matters is the "typedef int foo_t;" in
the newer autoconf.

Bruno