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21a1a59270
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Joseph Kogut 21a1a59270 package/alsa-lib: disable versioned symbols only when unsupported 
Back in commit e90a4bf4af ("alsa-lib:
don't use versioned symbols") from 2009, symbol versioning was
disabled in alsa-lib, because it was causing problems with C
libraries (such as uClibc) that doesn't support symbol versioning. The
thread at
http://mailman.alsa-project.org/pipermail/alsa-devel/2009-February/014999.html
has some background discussion about this.

Essentially, the issue was that alsa-lib in the new version of a given
symbol calls into an old version of the same symbol. If your C library
has symbol versioning, everything works fine. But if your C library
doesn't support symbol versioning, the call from the new symbol into
the old symbol will in fact end up in the new symbol, causing an
infinite recursion.

That problem was solved back then by unconditionally disabling symbol
versioning in alsa-lib.

However, some libraries such as CEF depend on versioned symbols from
alsa-lib, and the build fails during linking with versioning disabled.

This patch conditionally disables versioned symbols when unsupported
by the toolchain, leaving them enabled otherwise. We assume only glibc
has support for symbol versioning. uClibc has no support, and musl has
some limited support, so we take the safe route of only enabling
symbol versioning for glibc.

Signed-off-by: Joseph Kogut <joseph.kogut@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2022-01-08 10:58:58 +01:00
arch arch/config: Make RISC-V 64-bits MMU optional 2021-10-27 14:39:01 +02:00
board board/qemu/aarch64-sbsa: use partition-type-uuid for genimage-15 2022-01-03 21:41:50 +01:00
boot boot/barebox: bump version to 2021.12.0 2021-12-30 21:15:57 +01:00
configs configs/imx6-sabresd: bump U-Boot and kernel 2022-01-08 00:13:54 +01:00
docs package/sunxi-mali-utgard: rename from sunxi-mali-mainline 2022-01-06 19:01:51 +01:00
fs fs/ext2: fir (again) namespace for variables 2021-10-13 18:01:34 +02:00
linux linux: bump CIP RT kernel to version 5.10.83-cip1-rt1 2021-12-12 13:21:43 +01:00
package package/alsa-lib: disable versioned symbols only when unsupported 2022-01-08 10:58:58 +01:00
support support/testing: tyest_python_pybind.py: fix flake8 errors 2022-01-08 09:15:36 +01:00
system system/Config.in: introduce pre-build script 2022-01-06 11:43:40 +01:00
toolchain toolchain/toolchain-external/toolchain-external-bootlin: update openrisc toolchain 2022-01-07 21:30:39 +01:00
utils utils/diffconfig: use python3 explicitly 2021-12-29 10:07:59 +01:00
.clang-format .clang-format: initial import from Linux 5.15.6 2022-01-01 15:01:13 +01:00
.defconfig arch: remove support for sh64 2016-09-08 22:15:15 +02:00
.flake8 Revert ".flake8: fix check for 80/132 columns" 2021-01-02 17:38:20 +01:00
.gitignore
.gitlab-ci.yml .gitlab-ci.yml: update docker to 20220105.2314 2022-01-06 09:34:05 +01:00
CHANGES Update for 2021.02.8 2021-12-14 23:22:57 +01:00
Config.in support/download: Add SFTP support 2022-01-06 09:34:05 +01:00
Config.in.legacy package/sunxi-mali-utgard-driver: rename from sunxi-mali-mainline-driver 2022-01-06 19:02:09 +01:00
COPYING COPYING: add exception about patch licensing 2016-02-26 19:50:13 +01:00
DEVELOPERS package/libks: new package 2022-01-08 00:26:20 +01:00
Makefile system/Config.in: introduce pre-build script 2022-01-06 11:43:40 +01:00
Makefile.legacy Remove BR2_DEPRECATED 2016-10-15 23:14:45 +02:00
README docs: move the IRC channel away from Freenode 2021-05-29 22:16:23 +02:00

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 OFTC IRC.

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