Re: Compiling ncurses-6.1 on OpenBSD

[Thomas Dickey]

On Thu, Dec 26, 2019 at 05:12:56PM -0500, Thomas Dickey wrote:
> On Thu, Dec 26, 2019 at 01:13:11PM +0000, Stuart Henderson wrote:
> > On 2019/12/25 16:23, Thomas Dickey wrote:
> > > Since my message to address@hidden was ignored,
> > > I'll have to assume that they're not interested in discussing it,
> > > and will keep in mind to document it as a pitfall in upcoming releases.
> > 
> > The toolchain isn't my area, but I suspect there's little enthusiasm
> > for fixing a gcc-related problem especially one reported on amd64 - it's
> > pretty much only still built there so that developers have an easy way
> > to run it if they need to fix things in the base OS on the non-clang
> > platforms which many developers don't have direct access to.
> > 
> > If the problem remains with /usr/bin/cc (which is clang on
> > amd64/i386/arm/aarch64/mips64) then it would be useful to include the
> > full steps to repeat the problem - the script is mentioned but not
> > included in the address@hidden mail.
> 
> I took a quick look at the clang (cc) build, but don't see that problem.
> I haven't investigated the i386 configuration for a while - probably should...
> 
> > > > > > I revisited this, and can see half of the problem, which offers a 
> > > > > > different
> > > > > > workaround.  Comparing the specs files for the compiler in 6.2 and 
> > > > > > 6.5,
> > > > > > I see that someone added a fallback for -L/usr/lib, apparently to 
> > > > > > compensate
> > > > > > for some other change.
> > 
> > The commit log was "Pass -L/usr/lib to the linker in preparation for
> > switching to lld, which does not have a default search path."
> > 

Taking a look at the i386, I see that as you hinted  cc==clang.

That's okay.  But there's an error in OpenBSD's header files which
I'll have to work around for the time being.  It would be nice
if someone fixed it:

/usr/include/ctype.h has

#if __POSIX_VISIBLE >= 200809
#ifndef _LOCALE_T_DEFINED_
#define _LOCALE_T_DEFINED_
typedef void    *locale_t;
#endif
#endif

and (since ncurses uses no feature newer than this) my default build
does this:

        -D_BSD_SOURCE -D_XOPEN_SOURCE=600

which produces this error:

compiling cursesmain (obj_s)
In file included from ../c++/cursesmain.cc:39:
In file included from /usr/include/c++/v1/iostream:38:
In file included from /usr/include/c++/v1/ios:216:
In file included from /usr/include/c++/v1/__locale:32:
In file included from /usr/include/c++/v1/support/newlib/xlocale.h:26:
/usr/include/c++/v1/support/xlocale/__strtonum_fallback.h:24:64: error: unknown 
type name 'locale_t'
                                                char **endptr, locale_t) {
                                                               ^
because the locale_t use from iostream is improperly ifdef'd.

-- 
Thomas E. Dickey <address@hidden>
https://invisible-island.net
ftp://ftp.invisible-island.net

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