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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Fri, 25 Nov 2022 11:29:17 +0000
Message-ID: <CAH6eHdRfJ3agcMPn+_67vgcpMZ198mB-b3V0rLsTZoCWffzvYA@mail.gmail.com>
Subject: Re: Configuring GCC 10.3 on PPC Mac OS X 10.4.11/Tiger for build
 reveals flaws in configure scripts
To: Peter Dyballa <Peter_Dyballa@web.de>
Cc: gcc-help@gcc.gnu.org
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On Fri, 25 Nov 2022 at 11:22, Jonathan Wakely wrote:
>
> On Fri, 25 Nov 2022 at 10:20, Peter Dyballa via Gcc-help
> <gcc-help@gcc.gnu.org> wrote:
> > Configuring stage 2 in ./gcc
> >
> > checking linker --sysroot support... no
> > checking __stack_chk_fail in target C library... checking for __stack_chk_fail... no
> > no __stack_chk_fail on this target
> > no
> > checking sys/sdt.h in the target C library... no
>
>
> I'll see if I can find this one too. Also harmless though.

gcc/configure.ac has:

# Test for stack protector support in target C library.
AC_CACHE_CHECK(__stack_chk_fail in target C library,
...
       *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
     AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
           [echo "no __stack_chk_fail on this target"])
        ;;

That AC_CHECK_FUNC comes after the earlier message which hasn't
printed its result yet, so the output of the two gets muddled. Then
the echo makes it even worse, by adding a third message inside the
other two.