Matt Weber fdea09b831 package/proftpd: prevent openssl pthread detection
The proftpd configure script doesn't use pkg-config to detect openssl
libraries. Instead, it just adds -lcrypto. Since openssl may be linked
with pthread, it tries to detect that by calling 'openssl version -f',
which gives the arguments with which openssl was compiled.

Since the openssl executable used is either host-openssl or the system
installed openssl, the output of 'openssl version -f' is useless in
Buildroot context. If the target toolchain doesn't have threads support,
it will wrongly pick up -pthread from host-openssl.

Fortunately there is a simple workaround: --without-openssl-cmdline says
that there is no openssl executable and skips the test, so -pthread is
not added. It turns out -pthread is never needed, even in static linking
cases, because openssl/libressl puts the thread support in a separate
object file that only gets linked in if the program actually uses
threads (which proftpd doesn't).

Fixes:
http://autobuild.buildroot.net/results/9c25c3cb3cf93b76c0538c5376a803641bf6575b

Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
[Rewrite commit log, after additional analysis and testing]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

(cherry picked from commit 51bb23652f)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2019-02-22 13:33:43 +01:00
2016-09-08 22:15:15 +02:00
2019-01-31 17:37:58 +01:00
2016-10-15 23:14:45 +02:00

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.

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