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poky-tiny: Use musl for default system C library 

poky-tiny is reference for smallest footprint distro that can be
generated using yocto project infrastructure. Therefore switch to using
musl which gives the smallest footprint with a lot of extra stretching
for adding new package if needed, core-image-minimal for qemux86 comes
out to be 716K ( rootfs only ), boot tested on qemux86/poky-tiny

(From meta-yocto rev: e1b4918a4f3a19a125537a984ce4dadb79badcea)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khem Raj 2015-12-20 00:05:17 +00:00 committed by Richard Purdie
parent 6594bd543f
commit 1e95ebd4c3
1 changed files with 5 additions and 20 deletions
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25
meta-yocto/conf/distro/poky-tiny.conf
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@ -25,12 +25,12 @@
# [ ] Define linux-yocto-tiny configs for all supported BSPs
# [ ] Drop ldconfig from the installation
# [ ] Modify the runqemu scripts to work with ext2 parameter:
# runqemu qemux86 qemuparams="-nographic" bootparams="console=ttyS0,115200 root=0800"
# runqemu qemux86 qemuparams="-nographic" bootparams="console=ttyS0,115200 root=0800"
# [ ] Modify busybox to allow for DISTRO_FEATURES-like confiruration
require conf/distro/poky.conf
DISTRO = "poky-tiny"
TCLIBC = "musl"
# FIXME: consider adding a new "tiny" feature
#DISTRO_FEATURES_append = " tiny"
@ -57,27 +57,11 @@ ENABLE_WIDEC_class-native = "true"
# eglibc->bash->gettext->libc-posix-clang-wchar dependency.
USE_NLS="no"
# 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"
DISTRO_FEATURES_LIBC_TINY_append_x86-64 = " libc-libm-big"
# Required for "who"
DISTRO_FEATURES_LIBC_MINIMAL = "libc-utmp libc-utmpx libc-getlogin"
DISTRO_FEATURES_LIBC_REGEX = "libc-posix-regexp"
DISTRO_FEATURES_LIBC_NET = "libc-inet libc-nis"
DISTRO_FEATURES_LIBC = "${DISTRO_FEATURES_LIBC_TINY} \
${DISTRO_FEATURES_LIBC_MINIMAL} \
${DISTRO_FEATURES_LIBC_REGEX} \
${DISTRO_FEATURES_LIBC_NET} \
"
# Comment out any of the lines below to disable them in the build
# DISTRO_FEATURES options:
# alsa bluetooth ext2 irda pcmcia usbgadget usbhost wifi nfs zeroconf pci
DISTRO_FEATURES_TINY = "pci"
DISTRO_FEATURES_NET = "ipv4"
DISTRO_FEATURES_NET = "ipv4 ipv6"
DISTRO_FEATURES_USB = "usbhost"
#DISTRO_FEATURES_USBGADGET = "usbgadget"
#DISTRO_FEATURES_WIFI = "wifi"
@ -87,13 +71,14 @@ DISTRO_FEATURES = "${DISTRO_FEATURES_TINY} \
${DISTRO_FEATURES_USB} \
${DISTRO_FEATURES_USBGADGET} \
${DISTRO_FEATURES_WIFI} \
${DISTRO_FEATURES_LIBC} \
"
# Enable LFS - see bug YOCTO #5865
DISTRO_FEATURES_append_libc-uclibc = " largefile"
DISTRO_FEATURES_append_libc-musl = " largefile"
DISTRO_FEATURES_class-native = "${DISTRO_FEATURES_DEFAULT} ${DISTRO_FEATURES_LIBC} ${POKY_DEFAULT_DISTRO_FEATURES}"
DISTRO_FEATURES_class-nativesdk = "${DISTRO_FEATURES_DEFAULT} ${DISTRO_FEATURES_LIBC} ${POKY_DEFAULT_DISTRO_FEATURES}"
# Use tmpdevfs and the busybox runtime services
VIRTUAL-RUNTIME_dev_manager = ""