NetCube-Systems-Austria/kumquat-buildroot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
31,113 Commits 5 Branches 387 Tags 141 MiB
Makefile 64%
Python 15.3%
C 9.2%
Shell 6%
PHP 2.8%
Other 2.4%
ce6536ae50
Go to file
Thomas Petazzoni ce6536ae50 libaio: work-around for PowerPC issue 
Both the blktrace and gadgetfs-test packages were failing to build on
PowerPC due to the mysterious:

  hidden symbol `_rest32gpr_30_x' in libgcc.a(e500crtresx32gpr.o) is referenced by DSO

Due to this error, we disabled blktrace on PowerPC in commit
0d8158fc61. However, gadgetfs-test
continued to fail with the same error. As Romain Naour pointed out, the
problem seems in fact to come from a common dependency of blktrace and
gadgetfs-test: libaio. As Romain investigated, the problem started
appearing after the last bump of libaio, from version 0.3.109 to
0.3.110.

A quick bisect through the libaio changes between 0.3.109 and 0.3.110
has revealed that the problematic change is one in the libaio build
system, which now obeys to the CFLAGS provided in the environment,
rather than overriding them. So the CFLAGS provided by Buildroot cause
this problem. It turns out that the problematic CFLAGS is -Os, which is
indeed known to cause issues on PowerPC in some corner cases.

Even though it would probably be a better long-term solution to switch
to -O2 by default, and mark -Os as not available on PowerPC, it is a too
radical change so close to 2016.08. So we simply adjust the libaio
package so that it uses -O2 instead of -Os.

Fixes:

  http://autobuild.buildroot.net/results/5e6cc4c432ce6c964ac285026978ad14d9eae97c/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-08-11 15:04:07 +02:00
arch arch: define dependencies for the binfmt flat formats 2016-07-05 09:48:19 +02:00
board configs/odroidc2: enable console display 2016-08-07 22:56:00 +02:00
boot grub2: fix build with BR2_STRIP_none 2016-07-31 20:19:40 +02:00
configs defconfigs/snps_axs_10*: uboot needs dtc 2016-08-07 22:52:20 +02:00
docs docs/manual: fix patch naming convention 2016-08-09 15:45:32 +02:00
fs fs/common: add option to execute custom scripts under fakeroot 2016-07-03 20:58:46 +02:00
linux linux: bump default to version 4.7 2016-07-25 22:14:06 +02:00
package
support size-stats: fix bug when parsing file names with comma 2016-08-09 12:25:11 +02:00
system system: zoneinfo usable by musl, too 2016-08-09 22:50:21 +02:00
toolchain system: move locale purging options to the "System configuration" menu 2016-08-03 21:17:21 +02:00
.defconfig arch/x86: remove support for i386 2016-04-18 23:38:34 +02:00
.gitignore update gitignore 2013-05-04 12:41:55 +02:00
CHANGES Update for 2016.08-rc1 2016-08-06 11:39:54 +02:00
Config.in Config.in: fix typo 2016-07-31 23:14:33 +02:00
Config.in.legacy legacy: properly handle systemd compatibility libs 2016-07-16 16:47:39 +02:00
COPYING COPYING: add exception about patch licensing 2016-02-26 19:50:13 +01:00
Makefile Update for 2016.08-rc1 2016-08-06 11:39:54 +02:00
Makefile.legacy Makefile.legacy: fix recursive invocation with BUILDROOT_DL_DIR and _CONFIG 2014-02-11 08:14:57 +01:00
README README: add reference to submitting-patches 2016-02-01 19:16:08 +01:00

README 

Buildroot is a simple, efficient and easy-to-use tool to generate embedded
Linux systems through cross-compilation.

The documentation can be found in docs/manual. You can generate a text
document with 'make manual-text' and read output/docs/manual/manual.text.
Online documentation can be found at http://buildroot.org/docs.html

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the target architecture and the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) find the kernel, bootloader, root filesystem, etc. in output/images

You do not need to be root to build or run buildroot.  Have fun!

Buildroot comes with a basic configuration for a number of boards. Run
'make list-defconfigs' to view the list of provided configurations.

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: buildroot@buildroot.org
You can also find us on #buildroot on Freenode IRC.

If you would like to contribute patches, please read
https://buildroot.org/manual.html#submitting-patches