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From: "Ozkan Sezer (sezeroz AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
Date: Thu, 14 Jan 2021 21:15:35 +0300
Message-ID: <CAA2C=vCabGVfBT83OAdV3qh+OKzaNynzRiwQGi4eFMHZ97sT+Q@mail.gmail.com>
Subject: Re: Difficulties compiling libc from repository using gcc 10.N.0
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On 1/13/21, Ozkan Sezer <sezeroz AT gmail DOT com> wrote:
> The v1.2 commit to machine/endian.h defined some macros which may be
> problematic, e.g. __BIG_ENDIAN__: notice the leading _and_ trailing
> double-underscores.
> http://www.delorie.com/bin/cvsweb.cgi/djgpp/include/machine/endian.h
>
> Gcc from big-endian targeting toolchains have a tendency for defining
> __BIG_ENDIAN__, e.g.:
>
> $ /opt/cross_osx-ppc/bin/powerpc-apple-darwin9-gcc -E -dD -xc /dev/null | \
>   grep ENDIAN
> #define __BIG_ENDIAN__ 1
> #define _BIG_ENDIAN 1
>
> $ /gg/bin/ppc-morphos-gcc -E -dD -xc /dev/null | grep ENDIAN
> #define __BIG_ENDIAN__ 1
> #define _BIG_ENDIAN 1
>
> $ /opt/cross_amigaos4/bin/ppc-amigaos-gcc -E -dD -xc /dev/null | \
>   grep ENDIAN
> #define __BIG_ENDIAN__ 1
> #define _BIG_ENDIAN 1
>
> I suggest removing the additional macros with both leading and trailing
> double-underscores, i.e. like the following patch:
>
> Index: include/machine/endian.h
> ===================================================================
> RCS file: /cvs/djgpp/djgpp/include/machine/endian.h,v
> retrieving revision 1.2
> diff -u -r1.2 endian.h
> --- include/machine/endian.h	6 Jan 2021 14:55:05 -0000	1.2
> +++ include/machine/endian.h	13 Jan 2021 16:23:19 -0000
> @@ -54,11 +54,6 @@
>  #define __PDP_ENDIAN       PDP_ENDIAN
>  #define __BYTE_ORDER       LITTLE_ENDIAN
>
> -#define __LITTLE_ENDIAN__  LITTLE_ENDIAN
> -#define __BIG_ENDIAN__     BIG_ENDIAN
> -#define __PDP_ENDIAN__     PDP_ENDIAN
> -#define __BYTE_ORDER__     LITTLE_ENDIAN
> -
>
>  #include <sys/cdefs.h>
>

Applied the patch above to cvs.