[yocto] [PATCH 1/1] poky-tiny: Separate the libc features required for meta-toolchain
Darren Hart
dvhart at linux.intel.com
Mon Apr 16 18:06:12 PDT 2012
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 <nitin.a.kamble at intel.com>
Date: Mon Apr 9 15:15:01 2012 -0700
poky-tiny.conf: adjust eglibc options for poky-tiny
Signed-off-by: Darren Hart <dvhart at linux.intel.com>
CC: Nitin A. Kamble <nitin.a.kamble at intel.com>
CC: Saul Wold <sgw at linux.intel.com>
CC: Richard Purdie <richard.purdie at linuxfoundation.org>
---
meta-yocto/conf/distro/poky-tiny.conf | 18 ++++++++++++------
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 58d64ec..327cc1e 100644
--- a/meta-yocto/conf/distro/poky-tiny.conf
+++ b/meta-yocto/conf/distro/poky-tiny.conf
@@ -63,12 +63,17 @@ ASSUME_PROVIDED += "pkgconfig$"
# Reconfigure eglibc for a smaller installation
# Comment out any of the lines below to disable them in the build
DISTRO_FEATURES_LIBC_TINY = "libc-libm libc-crypt"
-# for gettext
-DISTRO_FEATURES_LIBC_TINY += "libc-posix-clang-wchar"
-# for m4
-DISTRO_FEATURES_LIBC_TINY += "libc-spawn libc-locale-code"
-# for elfutils
-DISTRO_FEATURES_LIBC_TINY += "libc-ftraverse"
+
+# Building meta-toolchain currently imposes some additional requirements:
+# If you do not plan to build meta-toolchain, you can save ~461KB by
+# commenting out the DISTRO_FEATURES_LIBC_TOOLCHAIN assignment
+# gettext needs wchar, m4 needs spawn and locale, elfutils needs ftraverse
+DISTRO_FEATURES_LIBC_TOOLCHAIN = "libc-posix-clang-wchar \
+ libc-spawn libc-locale-code \
+ libc-ftraverse libc-libm-big \
+ libc-posix-regexp-glibc \
+ "
+
# Required for "who"
DISTRO_FEATURES_LIBC_MINIMAL = "libc-utmp libc-getlogin"
DISTRO_FEATURES_LIBC_REGEX = "libc-posix-regexp"
@@ -78,6 +83,7 @@ DISTRO_FEATURES_LIBC = "${DISTRO_FEATURES_LIBC_TINY} \
${DISTRO_FEATURES_LIBC_MINIMAL} \
${DISTRO_FEATURES_LIBC_REGEX} \
${DISTRO_FEATURES_LIBC_NET} \
+ ${DISTRO_FEATURES_LIBC_TOOLCHAIN} \
"
# Comment out any of the lines below to disable them in the build
--
1.7.5.4
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