GNAT 5.1.0 for Mac illegal instructions

GNAT 5.1.0 for Mac illegal instructions

[David Botton]

I tried today to install gnat 5.1.0 on a fresh El Capitan install and doing a make on a fresh git clone of Gnoga I received the following errors. Any ideas?

/var/folders/42/lql9f6rs1n599ymxts7qzv_c0000gn/T//cc3KBvnz.s:64136:2: error: ambiguous instructions require an explicit suffix (could be 'filds', or 'fildl')
        fild    -464(%rbp)
        ^
/var/folders/42/lql9f6rs1n599ymxts7qzv_c0000gn/T//cc3KBvnz.s:67685:2: error: ambiguous instructions require an explicit suffix (could be 'fisttps', or 'fisttpl')
        fisttp  -90(%rbp)
        ^
/var/folders/42/lql9f6rs1n599ymxts7qzv_c0000gn/T//cc3KBvnz.s:67691:2: error: ambiguous instructions require an explicit suffix (could be 'fisttps', or 'fisttpl')
        fisttp  -90(%rbp)
        ^
/var/folders/42/lql9f6rs1n599ymxts7qzv_c0000gn/T//cc3KBvnz.s:67859:2: error: ambiguous instructions require an explicit suffix (could be 'fisttps', or 'fisttpl')
        fisttp  -2(%rbp)
        ^
/var/folders/42/lql9f6rs1n599ymxts7qzv_c0000gn/T//cc3KBvnz.s:67865:2: error: ambiguous instructions require an explicit suffix (could be 'fisttps', or 'fisttpl')
        fisttp  -2(%rbp)
        ^
gprbuild: *** compilation phase failed

Re: GNAT 5.1.0 for Mac illegal instructions

[Simon Wright]

David Botton <david@botton.com> writes:

> I tried today to install gnat 5.1.0 on a fresh El Capitan install and
> doing a make on a fresh git clone of Gnoga I received the following
> errors. Any ideas?
>
> /var/folders/42/lql9f6rs1n599ymxts7qzv_c0000gn/T//cc3KBvnz.s:64136:2:
> error: ambiguous instructions require an explicit suffix (could be
> 'filds', or 'fildl')
>         fild    -464(%rbp)
>         ^

I got this while rebuilding GNAT GPL 2015; I think it's a change to the
behaviour of Apple's assembler in the latest command line tools.

The file I got the problem with was g-alleve.adb, part of the Altivec
extensions.

AdaCore are aware of the problem, and have a fix, but I don't know when
we will see it.

The Altivec extensions are probably of little interest unless you want
to be portable to Power computers (unlikely); so I disabled the
GNAT.Altivec tree by nulling out GNATRTL_ALTIVEC_OBJS in
gcc/ada/Makefile.rtl.

Re: GNAT 5.1.0 for Mac illegal instructions

[Simon Wright]

David Botton <david@botton.com> writes:

> I tried today to install gnat 5.1.0 on a fresh El Capitan install and
> doing a make on a fresh git clone of Gnoga I received the following
> errors. Any ideas?

This is PR66509, which says it's fixed in 5.1.1 (??) and 6.0. I can
confirm the latter; not sure about 5.2.0, it was checked in to the 5
branch on 3 July, so it'll have missed 4.9.3 but may be in 5.2.0 (it's
not listed). In any case, the patch could be applied .. will work on it,
but things are a bit busy at the moment.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66509