diff options
authorDarren Hart <>2012-04-16 18:06:12 -0700
committerRichard Purdie <>2012-04-17 09:04:53 +0100
commitcf05f09f9ffa28a7502ebb9bf1ab00420aee1449 (patch)
parentc936fca6e163bc19bc08cbd0036b31ca6f6c3ed6 (diff)
poky-tiny: Separate the libc features required for meta-toolchain
This fixes bug [YOCTO #2295] eglibc needs libc-posix-regexp-glibc & libc-libm-big enabled in its configuration to avoid following eglibc build issue. Thanks to Nitin for identifying the required features. ... | In file included from xregex.c:634:0: | xregex.c: In function 'byte_regex_compile': | xregex.c:3395:8: error: too few arguments to function 'findidx' | ../locale/weight.h:23:1: note: declared here ... The libc features added to support building meta-toolchain add 461KB to the C libraries. 320KB directly to libc (a 32% increase in size). If not building meta-toolchain, the user should be able to easily configure these out. Create a new variable to capture these dependencies, DISTRO_FEATURES_LIBC_TOOLCHAIN, keeping them separate from the core tiny requirements. Make it clear how to disable these if meta-toolchain is not needed. This patch has been tested by running the following for the qemux86 machine with DISTRO=poky-tiny: $ bitbake -c cleansstate eglibc $ bitbake meta-toolchain $ bitbake core-image-minimal The libc comparisons were made from core-image-minimal ext2 filesystems build before and after the applicaiton of this patch and Nitin's previous poky-tiny libc features patch in support of meta-toolchain: commit 8c48ab6183934fd32600997cc33e0cd3bf63139b Author: Nitin A Kamble <> Date: Mon Apr 9 15:15:01 2012 -0700 poky-tiny.conf: adjust eglibc options for poky-tiny Signed-off-by: Darren Hart <> CC: Nitin A. Kamble <> CC: Saul Wold <> CC: Richard Purdie <> Signed-off-by: Richard Purdie <>
1 files changed, 12 insertions, 6 deletions
diff --git a/meta-yocto/conf/distro/poky-tiny.conf b/meta-yocto/conf/distro/poky-tiny.conf
index 58d64ece35..327cc1ee2c 100644
--- a/meta-yocto/conf/distro/poky-tiny.conf
+++ b/meta-yocto/conf/distro/poky-tiny.conf
@@ -63,12 +63,17 @@ ASSUME_PROVIDED += "pkgconfig$"
# Reconfigure eglibc for a smaller installation
# Comment out any of the lines below to disable them in the build
DISTRO_FEATURES_LIBC_TINY = "libc-libm libc-crypt"
-# for gettext
-DISTRO_FEATURES_LIBC_TINY += "libc-posix-clang-wchar"
-# for m4
-DISTRO_FEATURES_LIBC_TINY += "libc-spawn libc-locale-code"
-# for elfutils
-DISTRO_FEATURES_LIBC_TINY += "libc-ftraverse"
+# Building meta-toolchain currently imposes some additional requirements:
+# If you do not plan to build meta-toolchain, you can save ~461KB by
+# commenting out the DISTRO_FEATURES_LIBC_TOOLCHAIN assignment
+# gettext needs wchar, m4 needs spawn and locale, elfutils needs ftraverse
+DISTRO_FEATURES_LIBC_TOOLCHAIN = "libc-posix-clang-wchar \
+ libc-spawn libc-locale-code \
+ libc-ftraverse libc-libm-big \
+ libc-posix-regexp-glibc \
+ "
# Required for "who"
DISTRO_FEATURES_LIBC_MINIMAL = "libc-utmp libc-getlogin"
DISTRO_FEATURES_LIBC_REGEX = "libc-posix-regexp"
# Comment out any of the lines below to disable them in the build