libunwind does not compile

[Ronald Klop]

On Tue, 15 Mar 2016 16:10:10 +0100, Ian Lepore <ian at freebsd.org> wrote:

> On Mon, 2016-03-14 at 21:05 +0100, Ronald Klop wrote:
>> Hello,
>>
>> I'm cross compiling for Sheevaplug on a recent amd64/11-CURRENT with
>> clang
>> 3.8.0.
>> uname: FreeBSD sjakie.klop.ws 11.0-CURRENT FreeBSD 11.0-CURRENT #8
>> r296724M: Sun Mar 13 16:03:31 CET 2016
>> root at sjakie.klop.ws:/usr/obj/usr/src/sys/GENERIC-NODEBUG  amd64
>>
>> Using these settings:
>> export TARGET_ARCH=arm
>> export MAKEOBJDIRPREFIX=/usr/obj-arm
>> export KERNCONF=SHEEVAPLUG
>> export WITH_NAND=yes
>> export WITH_ARM_EABI=yes
>> export WITH_GCC=yes
>> export WITH_GNUCXX=yes
>> export WITHOUT_CLANG_IS_CC=yes
>> export NO_CLEAN=yes
>> export DESTDIR=/mnt/usbdisk
>>
>> I get the error below. Is this known/expected? What can I do to fix
>> it? I
>> build gcc because clang 3.7 did not work on arm (although it could
>> cross-compile to arm).
>>
>>
>> ===> gnu/lib/libgcc (obj,depend,all,install)
>> (cd /usr/src-arm/gnu/lib/libgcc; make -f
>> /usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile
>> MFILE=/usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile
>> GCCDIR=/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcc gthr
>> -default.h)
>> `gthr-default.h' is up to date.
>> (cd /usr/src-arm/gnu/lib/libgcc; make -f
>> /usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile
>> MFILE=/usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile
>> GCCDIR=/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcc unwind.h)
>> `unwind.h' is up to date.
>> cc -O -pipe   -DTARGET_ARM_EABI -DIN_GCC -DIN_LIBGCC2
>> -D__GCC_FLOAT_NOT_NEEDED  -DHAVE_GTHR_DEFAULT
>> -I/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcclibs/include
>> -I/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcc/config
>> -I/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcc -I.
>> -I/usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools
>> -Dinhibit_libc
>> -fno-inline -std=gnu99    -fheinous-gnu-extensions -Qunused-arguments
>>   -c
>> /usr/src
>> -arm/gnu/lib/libgcc/../../../contrib/gcc/config/arm/libunwind.S -o
>> libunwind.o
>> /usr/src
>> -arm/gnu/lib/libgcc/../../../contrib/gcc/config/arm/libunwind.S:29:10
>> :
>> fatal error: 'machine/acle-compat.h' file not found
>> #include <machine/acle-compat.h>
>>           ^
>> 1 error generated.
>> *** [libunwind.o] Error code 1
>
> When I crossbuild -current for dreamplug and I want gcc instead of
> clang, I use these settings:
>
>  WITH_GCC=yes
>  WITH_GNUCXX=yes
>  WITH_GCC_BOOTSTRAP=yes
>  WITHOUT_CLANG=yes
>  WITHOUT_CLANG_IS_CC=yes
>  WITHOUT_CLANG_BOOTSTRAP=yes
>
> That said, you may also be interested to hear that clang 3.8 runs fine
> on a *plug on -current.  I've been using clang 3.8 (from the project
> branch before the recent merge to current) and gcc on my dreamplug
> within the past month.
>
> -- Ian
>

Ah, ok.
I don't want to cross-build everything with gcc. I only had gcc installed  
as cc, because clang did not work on the arm machine. Does  
WITHOUT_CLANG_IS_CC does something more than 'man src.conf' mentions?
I just removed WITHOUT_CLANG_IS_CC=yes and now the build continues.

See what happens after a night sleep while clang compiles. :-)

Ronald.