Re: [PATCH 0/1] [1.2] poky-tiny: Separate the libc features required for meta-toolchain

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Mon, 2012-04-16 at 18:06 -0700, Darren Hart wrote:
> This addresses [YOCTO #2295], in which the meta-toolchain target would fail for
> the poky-tiny DISTRO definition due to its reduced libc feature set. This is not
> an optimal solution as it significantly increases the size of the C libraries
> (by 461KB). However, by making the features easily removed, those looking for
> truly tiny libc configurations can easily revert to the smaller set. Out of the
> box, we want poky-tiny to be able to build meta-toolchain.
> 
> In the future, we need to address WHY meta-toolchain cannot be built without
> these features and look at how to reduce the impact of meta-toolchain on the
> target eglibc build.

I had a thought about this:

diff --git a/meta/conf/distro/include/default-distrovars.inc b/meta/conf/distro/include/default-distrovars.inc
index 16b3108..f770919 100644
--- a/meta/conf/distro/include/default-distrovars.inc
+++ b/meta/conf/distro/include/default-distrovars.inc
@@ -10,12 +10,14 @@ LIMIT_BUILT_LOCALES ?= "POSIX en_US en_GB"
 ENABLE_BINARY_LOCALE_GENERATION ?= "1"
 LOCALE_UTF8_ONLY ?= "0"
 
-DISTRO_FEATURES_LIBC ?= "ipv4 ipv6 libc-backtrace libc-big-macros libc-bsd libc-cxx-tests libc-catgets libc-charsets libc-crypt \
+DISTRO_FEATURES_LIBC_DEFAULT ?= "ipv4 ipv6 libc-backtrace libc-big-macros libc-bsd libc-cxx-tests libc-catgets libc-charsets libc-crypt \
                                        libc-crypt-ufc libc-db-aliases libc-envz libc-fcvt libc-fmtmsg libc-fstab libc-ftraverse \
                                        libc-getlogin libc-idn libc-inet-anl libc-libm libc-libm-big libc-locales libc-locale-code \
                                        libc-memusage libc-nis libc-nsswitch libc-rcmd libc-rtld-debug libc-spawn libc-streams libc-sunrpc \
                                        libc-utmp libc-utmpx libc-wordexp libc-posix-clang-wchar libc-posix-regexp libc-posix-regexp-glibc \
                                        libc-posix-wchar-io"
+DISTRO_FEATURES_LIBC ?= "${DISTRO_FEATURES_LIBC_DEFAULT}"
+DISTRO_FEATURES_LIBC_virtclass-nativesdk = "${DISTRO_FEATURES_LIBC_DEFAULT}"
 DISTRO_FEATURES ?= "alsa argp bluetooth ext2 irda largefile pcmcia usbgadget usbhost wifi xattr nfs zeroconf pci 3g x11 ${DISTRO_FEATURES_LIBC}"
 
 IMAGE_FEATURES ?= ""

Probably not something for release at this point but maybe after it...

Cheers,

Richard