On 30 May 2018, at 04:29, Dan Allen <danalle...@gmail.com> wrote: > > I am building FreeBSD 11 stable i386 on an old Pentium 4 machine. The > clang/llvm build is just horrific in length, so I am substituting gcc by the > appropriate /etc/src.conf defines such as WITHOUT_CLANG, > WITHOUT_CLANG_BOOTSTRAP, WITH_GCC, WITH_GCC_BOOTSTRAP. > > After deleting clang via make delete-old in /usr/src, all of userland builds > fine, but the kernel will not build due to the aesni module.
Hmm, I wonder how you managed to build world, as my build ends with the
following errors:
In file included from /usr/obj/usr/src/tmp/usr/include/ieeefp.h:13,
from /usr/src/lib/msun/tests/exponential_test.c:41:
/usr/obj/usr/src/tmp/usr/include/machine/ieeefp.h:111:1: error: "__fldcw"
redefined
In file included from /usr/src/lib/msun/tests/exponential_test.c:35:
/usr/obj/usr/src/tmp/usr/include/fenv.h:98:1: error: this is the location of
the previous definition
In file included from /usr/obj/usr/src/tmp/usr/include/ieeefp.h:13,
from /usr/src/lib/msun/tests/exponential_test.c:41:
/usr/obj/usr/src/tmp/usr/include/machine/ieeefp.h:112:1: error: "__fldenv"
redefined
In file included from /usr/src/lib/msun/tests/exponential_test.c:35:
/usr/obj/usr/src/tmp/usr/include/fenv.h:99:1: error: this is the location of
the previous definition
In file included from /usr/obj/usr/src/tmp/usr/include/ieeefp.h:13,
from /usr/src/lib/msun/tests/exponential_test.c:41:
/usr/obj/usr/src/tmp/usr/include/machine/ieeefp.h:114:1: error: "__fnstcw"
redefined
In file included from /usr/src/lib/msun/tests/exponential_test.c:35:
/usr/obj/usr/src/tmp/usr/include/fenv.h:105:1: error: this is the location of
the previous definition
In file included from /usr/obj/usr/src/tmp/usr/include/ieeefp.h:13,
from /usr/src/lib/msun/tests/exponential_test.c:41:
/usr/obj/usr/src/tmp/usr/include/machine/ieeefp.h:115:1: error: "__fnstenv"
redefined
In file included from /usr/src/lib/msun/tests/exponential_test.c:35:
/usr/obj/usr/src/tmp/usr/include/fenv.h:104:1: error: this is the location of
the previous definition
In file included from /usr/obj/usr/src/tmp/usr/include/ieeefp.h:13,
from /usr/src/lib/msun/tests/exponential_test.c:41:
/usr/obj/usr/src/tmp/usr/include/machine/ieeefp.h:116:1: error: "__fnstsw"
redefined
In file included from /usr/src/lib/msun/tests/exponential_test.c:35:
/usr/obj/usr/src/tmp/usr/include/fenv.h:106:1: error: this is the location of
the previous definition
*** [exponential_test.o] Error code 1
make[6]: stopped in /usr/src/lib/msun/tests
1 error
This is on a cleanly installed 11.2-BETA2, with the following in
/etc/src.conf:
MK_CLANG=no
MK_CLANG_BOOTSTRAP=no
MK_CLANG_EXTRAS=no
MK_CLANG_FULL=no
MK_CLANG_IS_CC=no
MK_GCC=yes
MK_GCC_BOOTSTRAP=yes
MK_GNUCXX=yes
MK_LLD=no
MK_LLD_BOOTSTRAP=no
MK_LLD_IS_LD=no
MK_LLDB=no
It looks like the macros in fenv.h and ieeefp.h are clashing, and Ngie
Cooper worked around it in
https://svnweb.freebsd.org/changeset/base/321483, but for some reason
only for clang.
But even after I applied a band-aid for this, it dies on another part:
--- all_subdir_stand ---
cc1: warnings being treated as errors
/usr/src/stand/i386/gptboot/gptboot.c: In function 'main':
/usr/src/stand/i386/gptboot/gptboot.c:258: warning: declaration of 'autoboot'
shadows a global declaration
/usr/src/stand/common/bootstrap.h:64: warning: shadowed declaration is here
*** [gptboot.o] Error code 1
make[5]: stopped in /usr/src/stand/i386/gptboot
1 error
Here the warning is right, as 'autoboot' is indeed shadowed, though it
may not be problematic in practice.
> The build break is due to compiling /usr/src/sys/crypto/aesni/aesni_ghash.c,
> which in turn #includes wmmintrin.h, emmintrin.h, and smmintrin.h which are
> all clang-specific headers.
In this case, you cannot compile it with gcc-in-base, since it is too
old to have the right intrinsics headers.
> I am rebuilding with MK_CRYPT=no to see if this works around the problem, but
> it seems like perhaps just this one aesni module should not be built rather
> than all of CRYPT having to be disabled.
Probably only the module should be disabled, if the version of gcc is
too old. I have no idea where the needed intrinsics headers were added
upstream.
-Dimitry
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