GNU bug report logs - #26735
Unable to build emacs with Intel compilers

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#26735: closed (Unable to build emacs with Intel compilers)
Date: Mon, 29 May 2017 20:51:01 +0000

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Your message dated Mon, 29 May 2017 13:50:09 -0700
with message-id <4cb611cf-d8f7-5689-164f-7bd48569f486 <at> cs.ucla.edu>
and subject line Re: Unable to build emacs with Intel compilers
has caused the debbugs.gnu.org bug report #26735,
regarding Unable to build emacs with Intel compilers
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
26735: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=26735
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Contact help-debbugs <at> gnu.org with problems

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From: "Stewart, Adam James" <ajstewart <at> anl.gov>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: Unable to build emacs with Intel compilers
Date: Mon, 1 May 2017 15:45:07 +0000

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Hi,

I'm trying to build emacs 25.2 with Intel 17.0.2 on CentOS 7.3, but the build is crashing with the following error message:


alloc.c(1383): error: identifier "max_align_t" is undefined
    return (MALLOC_IS_GC_ALIGNED || (intptr_t) p % GCALIGNMENT == 0
            ^

alloc.c(1407): error: identifier "max_align_t" is undefined
    if (! MALLOC_IS_GC_ALIGNED)
          ^


Do you have any idea what might be causing this? I can send you the full build log if it will help.

Adam J. Stewart
Assistant Systems Administrator
Laboratory Computing Resource Center
Computing, Environment and Life Sciences
Argonne National Laboratory

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: "Stewart, Adam James" <ajstewart <at> anl.gov>
Cc: 26735-done <at> debbugs.gnu.org
Subject: Re: Unable to build emacs with Intel compilers
Date: Mon, 29 May 2017 13:50:09 -0700

I managed to obtain a copy of icc (ICC) 17.0.2 20170213, the same version in the 
original bug report, and could not reproduce the bug when building Emacs 25.2 on 
Ubuntu 16.04.2 LTS x86-65.

icc's stddef.h defines max_align_t inside this nested #if:

#if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
#if !defined(__CLANG_MAX_ALIGN_T_DEFINED) /* || __has_feature(modules) */
#ifndef _MSC_VER

Possibly the original bug occurred when configuring with __STDC_VERSION__ equal 
to 201112, and building with __STDC_VERSION__ equal to some lower value, which 
is not something that is supposed to work in general. Or possibly there was a 
file lib/stddef.h left over from a previous build with some other compiler. 
Anyway, as this bug report looks like a false alarm and is not being followed up 
on, I'm taking the liberty of closing it. We can reopen it later if I was too hasty.

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