Date: Tue, 22 Jan 2019 15:07:52 -0800 From: John Baldwin <jhb@FreeBSD.org> To: Mark Millard <marklmi@yahoo.com> Cc: "freebsd-ppc@freebsd.org" <freebsd-ppc@FreeBSD.org> Subject: Re: GDB TLS testing Message-ID: <a1da2471-535d-1497-ddf3-93aa0d29df59@FreeBSD.org> In-Reply-To: <D0B83B01-5428-42F0-B785-221826AF7EC4@yahoo.com> References: <b0f5b62f-54fb-309f-a578-7b4d9e340a55@FreeBSD.org> <19343397-859C-4629-A4A5-B0DCDE25957B@yahoo.com> <AB56B3D1-1762-4115-B7B4-91D4B997F1C4@yahoo.com> <eff896f3-e385-9a12-5132-3884e69689ca@FreeBSD.org> <D0B83B01-5428-42F0-B785-221826AF7EC4@yahoo.com>
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On 1/22/19 2:56 PM, Mark Millard wrote:
>
>
> On 2019-Jan-22, at 09:50, John Baldwin <jhb at freebsd.org> wrote:
>
>> On 1/21/19 7:02 PM, Mark Millard wrote:
>>>
>>>
>>> On 2019-Jan-21, at 18:24, Mark Millard <marklmi at yahoo.com> wrote:
>>>
>>>
>>>
>>>> On 2019-Jan-21, at 12:58, John Baldwin <jh at freebsd.org> wrote:
>>>>
>>>>> . . .
>>>>>
>>>>> Would someone with a working ppc system be willing to help test the GDB bits
>>>>> for me? You can grab the 'fbsd_tls' branch from github/bsdjhb/gdb.git to
>>>>> build a GDB. For testing purposes, just generating a core from the test
>>>>> programs I'm using and looking at that core on a non-ppc host would also
>>>>> work fine. For example, in my case where I have the ppc system installed to
>>>>> /qemu/ppc64/rootfs, I would do 'set sysroot /qemu/ppc64/rootfs' at the GDB
>>>>> prompt to point GDB at the ppc64 libraries, etc. Note that modern GDB is
>>>>> written in C++11, so you can't build it with gcc4.2.
>>>>>
>>>>> The first test program I am using is below and should generate a core when
>>>>> run. To test the TLS functionality you would want to make sure 'p id'
>>>>> reports the proper value (PID from the program's output), and also that
>>>>> 'p &id' also reports an address matching the program's output:
>>>>>
>>>>> #include <stdio.h>
>>>>> #include <unistd.h>
>>>>>
>>>>> static __thread int id;
>>>>>
>>>>> int
>>>>> main(int ac, char **av)
>>>>> {
>>>>>
>>>>> printf("main: PID %d\n", getpid());
>>>>> id = getpid();
>>>>> printf("id = %d (%p)\n", id, &id);
>>>>> (void)getchar();
>>>>> #if 1
>>>>> #if defined(__powerpc__)
>>>>> *(char *)NULL = 1;
>>>>> #else
>>>>> __builtin_trap();
>>>>> #endif
>>>>> #endif
>>>>> return (0);
>>>>> }
>>>>
>>>> Note: This is from my odd devel/pwoerpc64-xtoolchain-gcc based buildworld
>>>> based environment with cc being system clang:
>>>>
>>>> # uname -apKU
>>>> FreeBSD FBSDG5L 13.0-CURRENT FreeBSD 13.0-CURRENT #5 r341836M: Tue Dec 11 20:11:21 PST 2018 markmi@FBSDFSSD:/usr/obj/powerpc64vtsc_xtoolchain-gcc/powerpc.powerpc64/usr/src/powerpc.powerpc64/sys/GENERIC64vtsc-NODBG powerpc powerpc64 1300005 1300005
>>>>
>>>>
>>>> Absent makeinfo the make failed to complete. (I've no clue if there are
>>>> more dependencies required.)
>>>>
>>>> # ./configure
>>>> checking build system type... powerpc64-unknown-freebsd13.0
>>>> checking host system type... powerpc64-unknown-freebsd13.0
>>>> checking target system type... powerpc64-unknown-freebsd13.0
>>>> checking for a BSD-compatible install... /usr/bin/install -c
>>>> . . .
>>>> checking for makeinfo... no
>>>> /root/c_tests/ppc64_tls_git/missing: makeinfo: not found
>>>> checking for expect... no
>>>> . . .
>>>> # make
>>>> Configuring in ./libiberty
>>>> configure: creating cache ./config.cache
>>>> checking whether to enable maintainer-specific portions of Makefiles... no
>>>> checking for makeinfo... /root/c_tests/ppc64_tls_git/missing makeinfo --split-size=5000000
>>>> configure: WARNING:
>>>> *** Makeinfo is missing. Info documentation will not be built.
>>>> checking for perl... perl
>>>> . . .
>>>> creating bfdver.texi
>>>> restore=: && backupdir=".am$$" && rm -rf $backupdir && mkdir $backupdir && if (/root/c_tests/ppc64_tls_git/missing makeinfo --split-size=5000000 --split-size=5000000 --version) >/dev/null 2>&1; then for f in bfd.info bfd.info-[0-9] bfd.info-[0-9][0-9] bfd.i[0-9] bfd.i[0-9][0-9]; do if test -f $f; then mv $f $backupdir; restore=mv; else :; fi; done; else :; fi && if /root/c_tests/ppc64_tls_git/missing makeinfo --split-size=5000000 --split-size=5000000 -I . -o bfd.info `test -f 'bfd.texi' || echo './'`bfd.texi; then rc=0; else rc=$?; $restore $backupdir/* `echo "./bfd.info" | sed 's|[^/]*$||'`; fi; rm -rf $backupdir; exit $rc
>>>> /root/c_tests/ppc64_tls_git/missing: makeinfo: not found
>>>> WARNING: 'makeinfo' is missing on your system.
>>>> You should only need it if you modified a '.texi' file, or
>>>> any other file indirectly affecting the aspect of the manual.
>>>> You might want to install the Texinfo package:
>>>> <http://www.gnu.org/software/texinfo/>;
>>>> The spurious makeinfo call might also be the consequence of
>>>> using a buggy 'make' (AIX, DU, IRIX), in which case you might
>>>> want to install GNU make:
>>>> <http://www.gnu.org/software/make/>;
>>>> *** Error code 127
>>>>
>>>> Stop.
>>>> make[3]: stopped in /root/c_tests/ppc64_tls_git/bfd/doc
>>>> *** Error code 1
>>>>
>>>> Stop.
>>>> make[2]: stopped in /root/c_tests/ppc64_tls_git/bfd
>>>> *** Error code 1
>>>>
>>>> Stop.
>>>> make[1]: stopped in /root/c_tests/ppc64_tls_git
>>>> *** Error code 1
>>>>
>>>> Stop.
>>>> make: stopped in /root/c_tests/ppc64_tls_git
>>>
>>>
>>> After installing print/texinfo to get makeinfo , the
>>> next problem for me is libintl.h not being found
>>> despite its existence in /usr/local/include/ :
>>>
>>> # make
>>> . . .
>>> libtool: compile: cc -DHAVE_CONFIG_H -I. -DBINDIR=\"/usr/local/bin\" -I. -I. -I./../include -DHAVE_powerpc_elf64_fbsd_vec -DHAVE_powerpc_elf64_vec -DHAVE_powerpc_elf32_vec -DHAVE_powerpc_elf32_fbsd_vec -DHAVE_powerpc_elf32_le_vec -DHAVE_rs6000_xcoff_vec -DHAVE_rs6000_xcoff64_vec -DHAVE_rs6000_xcoff64_aix_vec -DHAVE_elf64_le_vec -DHAVE_elf64_be_vec -DHAVE_elf32_le_vec -DHAVE_elf32_be_vec -DHAVE_plugin_vec -W -Wall -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Werror -I./../zlib -g -O2 -MT archive.lo -MD -MP -MF .deps/archive.Tpo -c archive.c -o archive.o
>>> In file included from archive.c:134:
>>> ./sysdep.h:185:11: fatal error: 'libintl.h' file not found
>>> # include <libintl.h>
>>> ^~~~~~~~~~~
>>> 1 error generated.
>>> *** Error code 1
>>>
>>> Stop.
>>> make[4]: stopped in /root/c_tests/ppc64_tls_git/bfd
>>> *** Error code 1
>>>
>>> Stop.
>>> make[3]: stopped in /root/c_tests/ppc64_tls_git/bfd
>>> *** Error code 1
>>>
>>> Stop.
>>> make[2]: stopped in /root/c_tests/ppc64_tls_git/bfd
>>> *** Error code 1
>>>
>>> Stop.
>>> make[1]: stopped in /root/c_tests/ppc64_tls_git
>>> *** Error code 1
>>>
>>> Stop.
>>> make: stopped in /root/c_tests/ppc64_tls_git
>>>
>>>
>>>
>>> # find /usr/local/include/ -name libintl.h -print
>>> /usr/local/include/libintl.h
>>
>> This is an issue with GDB's configure that I haven't not been able to fix.
>> I usually use a wrapper script, but it should be sufficient to set CFLAGS
>> to "-I/usr/local/include" in the environment when invoking ./configure.
>
> I did that without forcing a clean-out first to see what it would report
> in the make attempt:
>
> # make
> Configuring in ./libiberty
> configure: loading cache ./config.cache
> configure: error: `CFLAGS' has changed since the previous run:
> configure: former value: `-g -O2'
> configure: current value: `-I/usr/local/include'
> configure: error: in `/root/c_tests/ppc64_tls_git/libiberty':
> configure: error: changes in the environment can compromise the build
> configure: error: run `make distclean' and/or `rm ./config.cache' and start over
> *** Error code 1
>
> Stop.
> make[1]: stopped in /root/c_tests/ppc64_tls_git
> *** Error code 1
>
> Stop.
> make: stopped in /root/c_tests/ppc64_tls_git
>
> So I'm trying:
>
> # env CFLAGS="-g -O2 -I/usr/local/include" ./configure
> . . .
> # rm */config.cache
> # make
Eh, try gmake instead of make. I'm pretty sure the GDB repository requires
GNU make.
--
John Baldwin
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