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build system: FEATURE_LIBBUSYBOX_STATIC - try to pull libc/libm into libbusybox

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It variously fails with different toolchains I tried...

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2017-07-15 14:52:26 +02:00
parent 8ea061eac3
commit 367a55c7d7
2 changed files with 31 additions and 28 deletions
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41
Config.in
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@@ -386,29 +386,26 @@ config BUILD_LIBBUSYBOX
Build a shared library libbusybox.so.N.N.N which contains all
busybox code.
This feature allows every applet to be built as a tiny
separate executable. Enabling it for "one big busybox binary"
approach serves no purpose and increases code size.
You should almost certainly say "no" to this.
This feature allows every applet to be built as a really tiny
separate executable linked against the library:
### config FEATURE_FULL_LIBBUSYBOX
### bool "Feature-complete libbusybox"
### default n if !FEATURE_SHARED_BUSYBOX
### depends on BUILD_LIBBUSYBOX
### help
### Build a libbusybox with the complete feature-set, disregarding
### the actually selected config.
###
### Normally, libbusybox will only contain the features which are
### used by busybox itself. If you plan to write a separate
### standalone application which uses libbusybox say 'Y'.
###
### Note: libbusybox is GPL, not LGPL, and exports no stable API that
### might act as a copyright barrier. We can and will modify the
### exported function set between releases (even minor version number
### changes), and happily break out-of-tree features.
###
### Say 'N' if in doubt.
$ size 0_lib/l*
text data bss dec hex filename
939 212 28 1179 49b 0_lib/last
939 212 28 1179 49b 0_lib/less
919138 8328 1556 929022 e2cfe 0_lib/libbusybox.so.1.N.M
This is useful on NOMMU systems which are not capable
of sharing executables, but are capable of sharing code
in dynamic libraries.
config FEATURE_LIBBUSYBOX_STATIC
bool "Pull in all external references into libbusybox"
default n
depends on BUILD_LIBBUSYBOX
help
Make libbusybox library independent, not using or requiring
any other shared libraries.
config FEATURE_INDIVIDUAL
bool "Produce a binary for each applet, linked against libbusybox"