On 4/6/2016 1:14 PM, Mark Millard wrote:
> The below forwards an example of a possibly more general issue not
> necessarily limited to arm context of the example: in a cross compile context
> the host CPP is in use via Makefile.libcompat not involving "${XCPP}" and so
> various macro checks for the target context fail to work.
>
> [The below and the material leading up to it was originally posted to
> freebsd-arm.]
>
> ===
> Mark Millard
> markmi at dsl-only.net
>
> On 2016-Apr-4, at 2:02 PM, Mark Millard <markmi at dsl-only.net> wrote:
>
> As a fix for
>
>>> --- all_subdir_lib/libsysdecode ---
>>> In file included from <stdin>:17:
>>> In file included from
>>> /usr/obj/clang/arm.armv6/usr/src/libsoft/usr/include/dev/nvme/nvme.h:36:
>>> In file included from
>>> /usr/obj/clang/arm.armv6/usr/src/libsoft/usr/include/sys/param.h:135:
>>> In file included from
>>> /usr/obj/clang/arm.armv6/usr/src/libsoft/usr/include/machine/param.h:49:
>>> /usr/obj/clang/arm.armv6/usr/src/libsoft/usr/include/machine/acle-compat.h:182:4:
>>> error: Unable to determine architecture version.
>>> # error Unable to determine architecture version.
>>> ^
>
> I tested building an amd64 -> arm cross-build based on
>
>> # svnlite diff Makefile.libcompat
>> Index: Makefile.libcompat
>> ===================================================================
>> --- Makefile.libcompat (revision 297514)
>> +++ Makefile.libcompat (working copy)
>> @@ -90,6 +90,7 @@
>> DTRACE="${LIB$COMPATDTRACE:U${DTRACE}}"
>> LIBCOMPATWMAKEFLAGS+= CC="${XCC} ${LIBCOMPATCFLAGS}" \
>> CXX="${XCXX} ${LIBCOMPATCFLAGS} ${LIBCOMPATCXXFLAGS}" \
>> + CPP="${XCPP}" \
>> DESTDIR=${LIBCOMPATTMP} \
>> -DNO_CPU_CFLAGS \
>> MK_CTF=no \
>
> and it completed without getting an "error:". So this addition to
> Makefile.libcompat may be one option for a fix.
> Yes this is needed. Please try this patch though: https://people.freebsd.org/~bdrewery/patches/libcompat-xcpp.diff -- Regards, Bryan Drewery
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