[Buildroot] depend or select in Config.in & Autotarget question

Hans-Christian Egtvedt hans-christian.egtvedt at atmel.com
Mon Mar 2 12:06:44 UTC 2009

On Mon, 2 Mar 2009 12:40:19 +0100
Olaf Rempel <razzor at kopf-tisch.de> wrote:

> Hi List,
> what is the preferred method to resolve package dependencies in
> Config.in? eg. when package-B needs package-A to build, should B
> "select" A or should B "depend" on A?

Packages can select other packages. For example if you application
depends on one or more libraries/software, then you should select these

Packages depends on toolchain options, so that you need to configure
your toolchain correct before you go out selecting packages.

Changing the toolchain after a first build will set you back all the
way to start.

> And when using "depend" should there be an info when A is not active
> (like ipsec-tools => openssl)?

Yes, but typically we make a comment which depends on the missing

I.e. "Qt - disabled (requires C++ support)", or I think something
similar is present in the kconfig menu.

> I've started with the Makefile.autotools.in conversion of some
> packages that I use. When should a AUTORECONF:=yes be used? So far it
> had no affect in my tests?

autoreconf may be needed for packages where mainline is shipping
outdated scripts which does not work anymore for up to date
distributions/new architectures.

If it's not needed for the package to compile, do not set it. It will
only slow down the build time.

Best regards,
Hans-Christian Egtvedt

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