external-toolchain: BR2_TOOLCHAIN_EXTERNAL_GLIBC includes eglibc

Dear Baruch Siach,

toolchain/toolchain-external/Config.in config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC · line 672

Quoted 3 lines · Baruch Siach

toolchain/toolchain-external/Config.in +3 -0

+	  Note: eglibc is a variant of glibc that (among other things) can be
+	  configured to exclude parts of its features. This capability is 
+	  currently not supported.

This note makes no sense in the context of external toolchains: the C library is already compiled into the external toolchain, so it's the responsibility of the person building the external toolchain to know how to configure eglibc. The fact that we don't support eglibc configuration in Buildroot doesn't make much sense.

Or, if you want to mean that we don't support eglibc toolchains that have been configured to leave out certain features (such as IPv6 support for example), then it should be said in a different way, such
as: "We only support eglibc toolchains providing this, that and this other feature".

This is exactly what I meant to say, but the text surely needs to be clearer as you suggest. What feature do you think we need to mention as minimal requirements in the help text?

Dear Baruch Siach,

On Tue, 25 Sep 2012 10:33:30 +0200, Baruch Siach wrote:

Quoted 3 lines

This is exactly what I meant to say, but the text surely needs to be clearer as you suggest. What feature do you think we need to mention as minimal requirements in the help text?

I have no idea, since I have never looked at what eglibc provides in terms of configurability :) I guess Yann can give details on this, he is quite certainly a lot more aware than I am about what the eglibc options are.