Buildroot: Build only one package as both shared a

Question

buildroot offers to possibility to build

• only static,
• only shared,
• or both shared and static libs

of the selected packages.

The assigned configuration elements are BR2_STATIC_LIBS, BR2_STATIC_LIBS, and BR2_SHARED_STATIC_LIBS.

Question:

Is it possible to build both a shared and static lib for one package only, while building only shared libs for all the other packages?

The one project which I want a static lib of would be an autotools-based package.

My effort:

I did read the manual, but to no avail. I did come up with one idea though, but I think it won't work: I could have buildroot call the configure script with some arguments defined by me forcing the additional creation of a static lib. However, this would collide with the arguments buildroot is providing, which are forcing configure to do quite the opposite. (Create shared lib only.)

Thank you!

Unfortunately I can't even tell which version of buildroot I am using, as I did not find a way to get buildroots version number.

Answer 1

Buildroot does not directly support changing options for one package only. That would simply explode the number of options.

The easiest way to do this is to edit package/foo/foo.mk and add the following line to it:

FOO_CONF_OPTS += --enable-static

These options come after the default autoconfig options (which contain --enable-shared --disable-static) and will thus override them.

If you don't want to touch the Buildroot sources, you can also do this in your local.mk or in a BR2_EXTERNAL -- see the manual for how to set these up.

The Buildroot version number is encoded at the top of the Makefile (line 90 in current master) in the variable BR2_VERSION. You can also look at the top of the generated .config file, which contains the version extended with the git commit hash.