[Crash-utility] [PATCH v3 1/1] Support cross-compilation

[lijiang]

在 2021年01月12日 16:24, crash-utility-request at redhat.com 写道:
> Date: Mon, 11 Jan 2021 18:47:41 +0100
> From: Alexander Egorenkov <egorenar at linux.ibm.com>
> To: lijiang <lijiang at redhat.com>, crash-utility at redhat.com,
> 	egorenar-dev at posteo.net
> Subject: Re: [Crash-utility] [PATCH v3 1/1] Support cross-compilation
> Message-ID: <87ft37tlfm.fsf at oc8242746057.ibm.com>
> Content-Type: text/plain
> 
> 
>> After applied this patch, the cross build failed in Fedora as below:
>>
>> [root at hpe-apollo-cn99xx-15-vm-21 crash]# make CROSS_COMPILE=s390x-linux-
>> ...
>> rm -f ./libiberty.a pic/./libiberty.a
>> s390x-linux-ar rc ./libiberty.a \
>>   ./regex.o ./cplus-dem.o ./cp-demangle.o ./md5.o ./sha1.o ./alloca.o ./argv.o ./choose-temp.o ./concat.o ./cp-demint.o ./crc32.o ./dwarfnames.o ./dyn-string.o ./fdmatch.o ./fibheap.o ./filename_cmp.o ./floatformat.o ./fnmatch.o ./fopen_unlocked.o ./getopt.o ./getopt1.o ./getpwd.o ./getruntime.o ./hashtab.o ./hex.o ./lbasename.o ./lrealpath.o ./make-relative-prefix.o ./make-temp-file.o ./mkstemps.o ./objalloc.o ./obstack.o ./partition.o ./pexecute.o ./physmem.o ./pex-common.o ./pex-one.o ./pex-unix.o ./safe-ctype.o ./simple-object.o ./simple-object-coff.o ./simple-object-elf.o ./simple-object-mach-o.o ./simple-object-xcoff.o ./sort.o ./spaces.o ./splay-tree.o ./stack-limit.o ./strerror.o ./strsignal.o ./timeval-utils.o ./unlink-if-ordinary.o ./xatexit.o ./xexit.o ./xmalloc.o ./xmemdup.o ./xstrdup.o ./xstrerror.o ./xstrndup.o  ./setproctitle.o
>> make[4]: s390x-linux-ar: Command not found
>> make[4]: *** [Makefile:247: libiberty.a] Error 127
>> make[3]: *** [Makefile:6996: all-libiberty] Error 2
>> make[2]: *** [Makefile:835: all] Error 2
>>
>> crash build failed
>>
>> make[1]: *** [Makefile:281: gdb_merge] Error 1
>> make: *** [Makefile:272: all] Error 2
>> [root at hpe-apollo-cn99xx-15-vm-21 crash]# 
>>
>>
>> Can you help to check this patch again and do some coverage testing?
>>
>> Thanks.
>> Lianbo
>>
> Hi Lianbo,
> 
> sorry for the late response, just came back from vacation.
> 
No worry.

> For testing i used buildroot because you not only need the whole
> cross-compilation toolchain with linker, ar etc but also some libraries
> compiled for the chosen target e.g. ncurses and zlib. buildroot
> provides it all already. And since November buildroot supports 390x arch.
> 
I have installed the whole cross-compilation toolchain in Fedora.

Or I missed something else? Could you please also verify this patch in Fedora?

> I also tried with Debian x86 which provides s390x cross-toolchain but it stopped with termcap library not
> found :( It is even wore for Fedora 32. I used buildroot because i do not want to build the whole cross
> toolchain and libraries.
> Some cross-toolchains are available in Fedora, for example:

On x86_64 machine:
[root at intel-s3ea2-09 crash]# rpm -qa|grep s390
binutils-s390x-linux-gnu-2.35.1-1.fc33.x86_64
gcc-s390x-linux-gnu-10.2.1-3.fc33.x86_64

And on other arches such as s390, ppc64le, Fedora has a similar cross-compilation

> I can provide the buildroot package for crash-utility if necessary.
> 
The buildroot is one of the scenarios for the cross-compilation. Maybe we could think more
about this. What's your opinion?

Thanks.
Lianbo

> Regards
> Alex