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From: "ibuclaw at gdcproject dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug d/103528] [12 regression] d21 doesn't build on Solaris
Date: Wed, 15 Dec 2021 22:20:23 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103528

--- Comment #5 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Rainer Orth from comment #0)
> * toplevel configure needs to make certain that the bootstrap gdc can com=
pile
>   *and link* some trivial D program.  Letting the build proceed otherwise
> leads
>   to confusing link errors as seen here.  gnat can do away without such a
> test
>   because there are no gnat without libgnat configurations (either you ha=
ve a
>   fully working GNAT or you have none), while the gdc without libphobos=20
>   situation is quite common in GCC.
I'm on the side-line with that observation though, gdc without libphobos has
been defaulted in configure.tgt more because I lack the means for testing s=
uch
a broad amount of targets (such as non-x86 BSDs).  When someone does test it
(powerpc64le-freebsd) the report I get back is usually that it works fine.

Rather gdc without libphobos is more of an exception, because the compiler
heavily depends on it existing anyway, with many high-level features lowered
into calls of core druntime helper functions.  Without a runtime, this seve=
rely
limits what you can do in the language to a strict subset (that might as we=
ll
be C).

To pick a similar example, is this a bug?  Or can it be explained away with
documentation?
---
checking for long long... yes
checking size of long long... configure: error: in `/work/gcc/build/gcc':
configure: error: cannot compute sizeof (long long)
See `config.log' for more details
make[1]: *** [Makefile:4511: configure-gcc] Error 1
make[1]: Leaving directory '/work/gcc/build'
make: *** [Makefile:985: all] Error 2
---
(config.log)
configure:6450: checking size of long long
configure:6455: g++ -o conftest -g     conftest.cpp  >&5
/usr/bin/ld: cannot find -lstdc++
collect2: error: ld returned 1 exit status
configure:6455: $? =3D 1
configure: program exited with status 1
---=