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Yann E. MORIN c72be5dd2f package/libopenssl does not support riscv32 
riscv32 is (surprise!) a 32-bit architecture. But it has been Y2038-safe
from its inception. As such, there are no legacy binaries that may use
the 32-bit time syscalls, and thus they are not available on riscv32.

Code that directly calls to the syscalls without using the C libraries
wrappers thus need to handle this case by themselves. That's what
upstream tried to do with:
    5b5e2985f3

We initially carried that patch with 2bb26c1a1d (package/libopenssl:
fix build on riscv32).

However, as Arnd Bergmann puts it [0]:

    The patch looks wrong to me: __NR_io_pgetevents_time64 must be used
    whenever time_t is 64-bit wide on a 32-bit architecture, while
    __NR_io_getevents/__NR_io_pgetevents must be used when time_t is the
    same width as 'long'.

    Checking whether __NR_io_getevents is defined is wrong for all
    architectures other than riscv

And Arnd agrees that patch should be reverted [1] [2] (there are further
comments in that stream, that are worth reading).

As such, we've reverted 2bb26c1a1d with 6cfb4ad7f7.

This means we have no working solution to enable openssl on riscv32 for
now. So, rather than fail the build, or backport a dysfunctional patch,
let's just forbid openssl on riscv32.

Drop the default from the choice selection; it was anyway superfluous:
the default of a choice, if left unspecified, is the first entry of the
choice. Also, having a default means we'd have to also propagate the
dependencies of the defaulted-to symbol, which is yet a little bit more
maintenance. Since the chances we get a third implementation of openssl
are pretty slim (very, very slim), reasoning about what is the default
is still very easy.

When propagating dependencies to tpm2-tss' users, we've tried to keep
the architecture dependency toward the top when possible, and otherwise
we've added it together with existing arch dependencies (MMU).

While at it, drop a useless redundant comment in ibm-sw-tpm2: if we
select FORCE_LIBOPENSSL, it is obvious that's because libressl is not
supported... Besides none of the other users of FORCE_LIBOPENSSL have
such a comment.

Fixes:
    http://autobuild.buildroot.org/results/eb9/eb9a64d4ffae8569b5225083f282cf87ffa7c681/
    ...
    http://autobuild.buildroot.org/results/07e/07e413b24ba8adc9558c80267ce16dda339bf032/

[0] 5b5e2985f3 (commitcomment-44782859)
[1] 5b5e2985f3 (commitcomment-47826509)
[2] 5b5e2985f3 (commitcomment-47830530)

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Matthew Weber <matthew.weber@rockwellcollins.com>
Cc: Mark Corbin <mark@dibsco.co.uk>
2021-03-04 22:53:08 +01:00
arch ARC: Add support for generic HS48 processor 2021-01-16 09:58:26 +01:00
board configs: rename a bunch of friendlyarm boards 2021-03-01 22:53:35 +01:00
boot uboot: fix binman with a new dependency 2021-02-12 09:46:27 +01:00
configs configs: rename a bunch of friendlyarm boards 2021-03-01 22:53:35 +01:00
docs Update for 2021.02-rc3 2021-02-27 18:34:56 +01:00
fs fs/cpio: add zstd as compression option 2021-01-16 22:45:34 +01:00
linux {linux, linux-headers}: bump 4.{4, 9, 14, 19}.x / 5.{4, 10}.x series 2021-03-02 08:54:44 +01:00
package package/libopenssl does not support riscv32 2021-03-04 22:53:08 +01:00
support support/scripts/gen-bootlin-toolchains: correct xtensa-lx60 toolchain dependencies 2021-03-02 23:52:49 +01:00
system system: support br2-external init systems 2020-10-14 22:48:42 +02:00
toolchain support/scripts/gen-bootlin-toolchains: correct xtensa-lx60 toolchain dependencies 2021-03-02 23:52:49 +01:00
utils utils/scanpypi: use python3 explicitly 2021-02-20 17:42:46 +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: update the image version 2020-08-15 09:47:00 +02:00
CHANGES Update for 2021.02-rc3 2021-02-27 18:34:56 +01:00
Config.in Config.in: update BR2_OPTIMIZE_FAST prompt and help text 2020-07-18 16:05:01 +02:00
Config.in.legacy package/audiofile: drop package 2021-02-08 16:18:42 +01:00
COPYING
DEVELOPERS configs: rename a bunch of friendlyarm boards 2021-03-01 22:53:35 +01:00
Makefile Update for 2021.02-rc3 2021-02-27 18:34:56 +01:00
Makefile.legacy Remove BR2_DEPRECATED 2016-10-15 23:14:45 +02:00
README

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