From: Tobias Burnus <tobias@codesourcery.com>
To: Gerald Pfeifer <gerald@pfeifer.com>,
Sandra Loosemore <sandra@codesourcery.com>,
Andreas Tobler <andreast@FreeBSD.org>
Cc: <fortran@gcc.gnu.org>, <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH, Fortran] Revert to non-multilib-specific ISO_Fortran_binding.h
Date: Mon, 13 Sep 2021 18:32:56 +0200 [thread overview]
Message-ID: <b7b5e145-f4ae-5529-b1b1-149eeb65f11f@codesourcery.com> (raw)
In-Reply-To: <4c32e0e7-7156-835a-30b-ada8c4b4482d@pfeifer.com>
Hi Gerald,
On 13.09.21 17:56, Gerald Pfeifer wrote:
> This broke bootstrap on i586-unknown-freebsd11:
>
> In file included from .../GCC-HEAD/libgfortran/runtime/ISO_Fortran_binding.c:30:
> .../GCC-HEAD/libgfortran/ISO_Fortran_binding.h:255:2:
> error: #error "Can't determine kind of long double"
> 255 | #error "Can't determine kind of long double"
> | ^~~~~
>
> Does this work on i586-*-linux?
>
>
> % egrep -r '#define.*LDBL_(MANT_DIG|MIN_EXP|MAX_EXP)' /usr/include/
> /usr/include/x86/float.h:#define LDBL_MANT_DIG 64
> /usr/include/x86/float.h:#define LDBL_MIN_EXP (-16381)
> /usr/include/x86/float.h:#define LDBL_MAX_EXP 16384
>
> This looks like it matches existing Linux case already in place?
Can you run 'echo | cpp -E -g3|grep DBL' to (or in the build dir: echo |
./gcc/cc1 -E -g3 -dD|grep DBL) to check what's the output?
It might be that /usr/include/x86/float.h is not used; e.g. there is
$(gcc-src)/ginclude/float.h which undef's the LDBL_MAX_EXP to replace it
by a #define using __LDBL_MAX_EXP. Thus, if those are different from the
values under /usr/include, it might be the reason for the fail?
I think it works under Linux, at least the "x86-64 -m32"
libgfortran.{so,a} build and the -m32 testsuite runs do work.
Tobias
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next prev parent reply other threads:[~2021-09-13 16:33 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-19 2:57 Sandra Loosemore
2021-09-03 2:05 ` PING " Sandra Loosemore
2021-09-06 19:29 ` Tobias Burnus
2021-09-10 15:39 ` Andreas Schwab
2021-09-13 7:51 ` Tobias Burnus
2021-09-13 15:56 ` Gerald Pfeifer
2021-09-13 16:32 ` Tobias Burnus [this message]
2021-09-13 16:51 ` Jakub Jelinek
2021-09-13 16:59 ` Sandra Loosemore
2021-09-13 17:07 ` Tobias Burnus
2021-09-13 17:20 ` Jakub Jelinek
2021-09-14 3:39 ` Sandra Loosemore
2021-09-14 7:39 ` Tobias Burnus
2021-09-14 16:34 ` Gerald Pfeifer
2021-09-14 14:50 ` Gerald Pfeifer
2021-09-14 15:16 ` Tobias Burnus
2021-09-14 15:17 ` Andreas Schwab
2021-09-14 15:23 ` Jakub Jelinek
2021-09-14 15:30 ` Andreas Schwab
2021-09-15 1:05 ` Joseph Myers
2021-09-14 19:27 ` Gerald Pfeifer
2021-09-17 6:03 ` Gerald Pfeifer
2021-09-17 14:10 ` [committed] Fortran: Prefer GCC internal macros to float.h in ISO_Fortran_binding.h (was: [PATCH, Fortran] Revert to non-multilib-specific ISO_Fortran_binding.h) Tobias Burnus
2021-09-18 4:51 ` Gerald Pfeifer
2021-09-13 17:39 ` [PATCH, Fortran] Revert to non-multilib-specific ISO_Fortran_binding.h Andreas Schwab
2021-09-13 18:07 ` Jakub Jelinek
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