Re: [systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
For the reference, -flto option was preventing static linker from making the assignments. Could be very well something specific to our toolchain. On Fri, Dec 12, 2014 at 11:50 PM, Umut Tezduyar Lindskog wrote: > On Fri, Dec 12, 2014 at 4:46 PM, Lennart Poettering > wrote: >> On Fri, 12.12.14 10:10, Umut Tezduyar Lindskog (u...@tezduyar.com) wrote: >> >>> > >>> > https://sourceware.org/bugzilla/show_bug.cgi?id=11133 >>> > >>> > But that's 4y old... Or is your toolchain that old? >>> >>> Shouldn't be: >>> >>> mipsisa32r2el-axis-linux-gnu-gcc --version >>> mipsisa32r2el-axis-linux-gnu-gcc (GCC 4.7.2 Axis release R24/1.24) >>> 4.7.2 20120820 (prerelease) [gcc-4_7-branch revision 190527] >> >> That's the gcc version. And what binutils version is this? > > mipsisa32r2el-axis-linux-gnu-ld --version > GNU ld (GNU Binutils) 2.24.51.20131126 > Copyright 2013 Free Software Foundation, Inc. > This program is free software; you may redistribute it under the terms of > the GNU General Public License version 3 or (at your option) a later version. > This program has absolutely no warranty. > > I will double check things with our compiler tools group. > >> >> Lennart >> >> -- >> Lennart Poettering, Red Hat ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
On Fri, Dec 12, 2014 at 4:46 PM, Lennart Poettering wrote: > On Fri, 12.12.14 10:10, Umut Tezduyar Lindskog (u...@tezduyar.com) wrote: > >> > >> > https://sourceware.org/bugzilla/show_bug.cgi?id=11133 >> > >> > But that's 4y old... Or is your toolchain that old? >> >> Shouldn't be: >> >> mipsisa32r2el-axis-linux-gnu-gcc --version >> mipsisa32r2el-axis-linux-gnu-gcc (GCC 4.7.2 Axis release R24/1.24) >> 4.7.2 20120820 (prerelease) [gcc-4_7-branch revision 190527] > > That's the gcc version. And what binutils version is this? mipsisa32r2el-axis-linux-gnu-ld --version GNU ld (GNU Binutils) 2.24.51.20131126 Copyright 2013 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or (at your option) a later version. This program has absolutely no warranty. I will double check things with our compiler tools group. > > Lennart > > -- > Lennart Poettering, Red Hat ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
On Fri, 12.12.14 10:10, Umut Tezduyar Lindskog (u...@tezduyar.com) wrote: > > > > https://sourceware.org/bugzilla/show_bug.cgi?id=11133 > > > > But that's 4y old... Or is your toolchain that old? > > Shouldn't be: > > mipsisa32r2el-axis-linux-gnu-gcc --version > mipsisa32r2el-axis-linux-gnu-gcc (GCC 4.7.2 Axis release R24/1.24) > 4.7.2 20120820 (prerelease) [gcc-4_7-branch revision 190527] That's the gcc version. And what binutils version is this? Lennart -- Lennart Poettering, Red Hat ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
In case someone has an idea, here is the full linker command:
/bin/sh ./libtool --tag=CC --mode=link
mipsisa32r2el-axis-linux-gnu-gcc -isystem
/build/target/mipsisa32r2el-axis-linux-gnu/include -isystem
/build/target/mipsisa32r2el-axis-linux-gnu/usr/include -std=gnu99
-pipe -Wall -Wextra -Wno-inline -Wundef -Wformat=2 -Wformat-security
-Wformat-nonliteral -Wlogical-op -Wsign-compare -Wmissing-include-dirs
-Wold-style-definition -Wpointer-arith -Winit-self
-Wdeclaration-after-statement -Wfloat-equal
-Wsuggest-attribute=noreturn -Wmissing-prototypes -Wstrict-prototypes
-Wredundant-decls -Wmissing-declarations -Wmissing-noreturn -Wshadow
-Wendif-labels -Wstrict-aliasing=2 -Wwrite-strings -Wno-long-long
-Wno-overlength-strings -Wno-unused-parameter
-Wno-missing-field-initializers -Wno-unused-result -Werror=overflow
-Wnested-externs -ffast-math -fno-common -fdiagnostics-show-option
-fno-strict-aliasing -fvisibility=hidden -ffunction-sections
-fdata-sections -fstack-protector -fPIE --param=ssp-buffer-size=4
-flto -ffat-lto-objects -Wall -Wshadow -O2 -g3 -D_FORTIFY_SOURCE=2
-fstack-protector -Wl,--as-needed -Wl,--no-undefined
-Wl,--gc-sections -Wl,-z,relro -Wl,-z,now -pie -Wl,-fuse-ld=gold
-module -export-dynamic -avoid-version -shared -shrext .so.2
-Wl,--version-script=/build/apps/systemd/systemd/src/nss-resolve/nss-resolve.sym
-L/build/target/mipsisa32r2el-axis-linux-gnu/lib
-L/build/target/mipsisa32r2el-axis-linux-gnu/usr/lib
-Wl,-rpath-link,/build/target/mipsisa32r2el-axis-linux-gnu/lib:/build/target/mipsisa32r2el-axis-linux-gnu/usr/lib
-o libnss_resolve.la -rpath /usr/lib src/nss-resolve/nss-resolve.lo
libsystemd-shared.la libsystemd-internal.la -lrt -ldl
On Fri, Dec 12, 2014 at 10:10 AM, Umut Tezduyar Lindskog
wrote:
> On Fri, Dec 12, 2014 at 12:24 AM, Lennart Poettering
> wrote:
>> On Thu, 11.12.14 23:01, Umut Tezduyar Lindskog (u...@tezduyar.com) wrote:
>>
>>> Trying to build 218 but I am getting undefined reference error. The
>>> source code of bus-error.c mentions that gcc magically maps these
>>> variables but not for me.
>>>
>>> What is doing the mapping? __attribute__ ((__section__("BUS_ERROR_MAP"))) ?
>>>
>>> Could it be that mentioned "gcc magic" is not supported on cross compiling?
>>>
>>> Also, why do we need to use elf section instead of iterating over
>>> bus_standard_errors[]?
>>
>> The idea is that any .c file linked into a binary can define
>> additional maps, and we collect them all simply by iterating through
>> __start_BUS_ERROR_MAP to __stop_BUS_ERROR_MAP.
>>
>> The __start_XYZ/__stop_XYZ magic is pretty old ld/gold stuff, support
>> since a long time.
>>
>> Is there something fishy with your toolchain? Any particular build
>> time options you turned on or off? Some really old ld
>> versions would end up dropping these sections a bit too eagerly:
>
> Maybe. I will ask this internally too.
>
>>
>> https://sourceware.org/bugzilla/show_bug.cgi?id=11133
>>
>> But that's 4y old... Or is your toolchain that old?
>
> Shouldn't be:
>
> mipsisa32r2el-axis-linux-gnu-gcc --version
> mipsisa32r2el-axis-linux-gnu-gcc (GCC 4.7.2 Axis release R24/1.24)
> 4.7.2 20120820 (prerelease) [gcc-4_7-branch revision 190527]
>
>
>>
>>> CCLD libnss_resolve.la
>>> libsystemd_shared_la-hashmap.o (symbol from plugin): warning: memset
>>> used with constant zero length parameter; this could be due to
>>> transposed parameters
>>> /tmp/ccHr0vVt.ltrans13.ltrans.o: In function
>>> `bus_error_name_to_errno.14134':
>>> ccHr0vVt.ltrans13.o:(.text+0x7b0): undefined reference to
>>> `__start_BUS_ERROR_MAP'
>>> ccHr0vVt.ltrans13.o:(.text+0x7b4): undefined reference to
>>> `__stop_BUS_ERROR_MAP'
>>> collect2: error: ld returned 1 exit status
>>>
>>> Umut
>>> ___
>>> systemd-devel mailing list
>>> systemd-devel@lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/systemd-devel
>>
>>
>> Lennart
>>
>> --
>> Lennart Poettering, Red Hat
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Re: [systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
On Fri, Dec 12, 2014 at 12:24 AM, Lennart Poettering
wrote:
> On Thu, 11.12.14 23:01, Umut Tezduyar Lindskog (u...@tezduyar.com) wrote:
>
>> Trying to build 218 but I am getting undefined reference error. The
>> source code of bus-error.c mentions that gcc magically maps these
>> variables but not for me.
>>
>> What is doing the mapping? __attribute__ ((__section__("BUS_ERROR_MAP"))) ?
>>
>> Could it be that mentioned "gcc magic" is not supported on cross compiling?
>>
>> Also, why do we need to use elf section instead of iterating over
>> bus_standard_errors[]?
>
> The idea is that any .c file linked into a binary can define
> additional maps, and we collect them all simply by iterating through
> __start_BUS_ERROR_MAP to __stop_BUS_ERROR_MAP.
>
> The __start_XYZ/__stop_XYZ magic is pretty old ld/gold stuff, support
> since a long time.
>
> Is there something fishy with your toolchain? Any particular build
> time options you turned on or off? Some really old ld
> versions would end up dropping these sections a bit too eagerly:
Maybe. I will ask this internally too.
>
> https://sourceware.org/bugzilla/show_bug.cgi?id=11133
>
> But that's 4y old... Or is your toolchain that old?
Shouldn't be:
mipsisa32r2el-axis-linux-gnu-gcc --version
mipsisa32r2el-axis-linux-gnu-gcc (GCC 4.7.2 Axis release R24/1.24)
4.7.2 20120820 (prerelease) [gcc-4_7-branch revision 190527]
>
>> CCLD libnss_resolve.la
>> libsystemd_shared_la-hashmap.o (symbol from plugin): warning: memset
>> used with constant zero length parameter; this could be due to
>> transposed parameters
>> /tmp/ccHr0vVt.ltrans13.ltrans.o: In function `bus_error_name_to_errno.14134':
>> ccHr0vVt.ltrans13.o:(.text+0x7b0): undefined reference to
>> `__start_BUS_ERROR_MAP'
>> ccHr0vVt.ltrans13.o:(.text+0x7b4): undefined reference to
>> `__stop_BUS_ERROR_MAP'
>> collect2: error: ld returned 1 exit status
>>
>> Umut
>> ___
>> systemd-devel mailing list
>> systemd-devel@lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/systemd-devel
>
>
> Lennart
>
> --
> Lennart Poettering, Red Hat
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Re: [systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
Hi,
On Fri, Dec 12, 2014 at 7:56 AM, Matthias Urlichs wrote:
> Hi,
>
> Lennart:
>>
>> The idea is that any .c file linked into a binary can define
>> additional maps, and we collect them all simply by iterating through
>> __start_BUS_ERROR_MAP to __stop_BUS_ERROR_MAP.
>>
> Unless there are none of these entries.
>
> Umut: Does the cross compiling somehow not include any
> data that are in section BUS_ERROR_MAP?
This doesn't seem to be the case. I looked at the
libsystemd_la-bus-error.o and I have the BUS_ERROR_MAP section with
size 0x118 which matches with source code 32bit mips [1].
The __start_BUS_ERROR_MAP, __stop_BUS_ERROR_MAP symbols are in the
object file too as unresolved [2]. Somehow static linker doesn't
resolve the symbols to section begin/end.
Any other suggestions?
[1] - https://drive.google.com/open?id=0B_uiALgWpGXtSVpUR3pwcWNodGc&authuser=0
[2] - https://drive.google.com/open?id=0B_uiALgWpGXtNGFKSlR4VjN4MGM&authuser=0
Umut
>
> If that's actually intended, this should fix it:
>
> char dummy_bus_error_map[0] __attribute__ ((__section__("BUS_ERROR_MAP")));
>
> --
> -- Matthias Urlichs
>
> ___
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>
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Re: [systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
Hi,
Lennart:
>
> The idea is that any .c file linked into a binary can define
> additional maps, and we collect them all simply by iterating through
> __start_BUS_ERROR_MAP to __stop_BUS_ERROR_MAP.
>
Unless there are none of these entries.
Umut: Does the cross compiling somehow not include any
data that are in section BUS_ERROR_MAP?
If that's actually intended, this should fix it:
char dummy_bus_error_map[0] __attribute__ ((__section__("BUS_ERROR_MAP")));
--
-- Matthias Urlichs
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Re: [systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
On Thu, 11.12.14 23:01, Umut Tezduyar Lindskog (u...@tezduyar.com) wrote:
> Trying to build 218 but I am getting undefined reference error. The
> source code of bus-error.c mentions that gcc magically maps these
> variables but not for me.
>
> What is doing the mapping? __attribute__ ((__section__("BUS_ERROR_MAP"))) ?
>
> Could it be that mentioned "gcc magic" is not supported on cross compiling?
>
> Also, why do we need to use elf section instead of iterating over
> bus_standard_errors[]?
The idea is that any .c file linked into a binary can define
additional maps, and we collect them all simply by iterating through
__start_BUS_ERROR_MAP to __stop_BUS_ERROR_MAP.
The __start_XYZ/__stop_XYZ magic is pretty old ld/gold stuff, support
since a long time.
Is there something fishy with your toolchain? Any particular build
time options you turned on or off? Some really old ld
versions would end up dropping these sections a bit too eagerly:
https://sourceware.org/bugzilla/show_bug.cgi?id=11133
But that's 4y old... Or is your toolchain that old?
> CCLD libnss_resolve.la
> libsystemd_shared_la-hashmap.o (symbol from plugin): warning: memset
> used with constant zero length parameter; this could be due to
> transposed parameters
> /tmp/ccHr0vVt.ltrans13.ltrans.o: In function `bus_error_name_to_errno.14134':
> ccHr0vVt.ltrans13.o:(.text+0x7b0): undefined reference to
> `__start_BUS_ERROR_MAP'
> ccHr0vVt.ltrans13.o:(.text+0x7b4): undefined reference to
> `__stop_BUS_ERROR_MAP'
> collect2: error: ld returned 1 exit status
>
> Umut
> ___
> systemd-devel mailing list
> systemd-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Lennart
--
Lennart Poettering, Red Hat
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[systemd-devel] Build error with 218 - undefined reference to `__start_BUS_ERROR_MAP'
Trying to build 218 but I am getting undefined reference error. The
source code of bus-error.c mentions that gcc magically maps these
variables but not for me.
What is doing the mapping? __attribute__ ((__section__("BUS_ERROR_MAP"))) ?
Could it be that mentioned "gcc magic" is not supported on cross compiling?
Also, why do we need to use elf section instead of iterating over
bus_standard_errors[]?
CCLD libnss_resolve.la
libsystemd_shared_la-hashmap.o (symbol from plugin): warning: memset
used with constant zero length parameter; this could be due to
transposed parameters
/tmp/ccHr0vVt.ltrans13.ltrans.o: In function `bus_error_name_to_errno.14134':
ccHr0vVt.ltrans13.o:(.text+0x7b0): undefined reference to
`__start_BUS_ERROR_MAP'
ccHr0vVt.ltrans13.o:(.text+0x7b4): undefined reference to `__stop_BUS_ERROR_MAP'
collect2: error: ld returned 1 exit status
Umut
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