On Feb 12 11:10, Christian Franke via Cygwin wrote:
> This is not a binutils regression: A build from cygwin 3.5.0-1 src package
> or current newlib-cygwin git main (bfb68a9) with new binutils-2.42-1 fails
> with:
>
> "
> In file included from ../../../../winsup/utils/dumper.cc:23:
> /usr/include/bfd.h:2748:1: error: expected initializer before
> ‘ATTRIBUTE_WARN_UNUSED_RESULT’
> "
>
> Downgrading to binutils 2.41-3 fixes the problem.
>
> A diff of /usr/include/bsd.h shows that ATTRIBUTE_WARN_UNUSED_RESULT is a
> new addition in 2.42-1. This requires /usr/include/ansidecl.h. It is
> included by /usr/include/bsd.h but this has no effect because Cygwin source
> tree provides its own ansidecl.h which lacks ATTRIBUTE_WARN_UNUSED_RESULT:
>
> $ g++ ....MANY_OPTIONS... -E ../../../../winsup/utils/dumper.cc
> ...
> # 1 "../../../../winsup/utils/dumper.cc"
> ...
> # 1 "../../../../winsup/../include/ansidecl.h" 1 <== #define _ANSIDECL_H
> ...
> # 1 "/usr/include/bfd.h" 1 3 4
> ...
> # 1 "/usr/include/ansidecl.h" 1 3 4 <== #ifndef _ANSIDECL_H
Did you try to copy over include/ansidecl.h from binutils master
to newlib-cygwin's include/ansidecl.h?
It looks like this does the trick, together with changing
dumper.cc, because of:
winsup/utils/dumper.cc:145:48: error: ‘PTR’ has not been declared
145 | print_section_name (bfd* abfd, asection* sect, PTR obj)
| ^~~
Changing this to "void*" fixes the build for binutils 2.40 on Linux.
Corinna
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