Commit Graph

5 Commits

Author SHA1 Message Date
Max Filippov
b5423c2c3f uclibc: enable UCLIBC_HAS_GNU_GETSUBOPT in all configs
This fixes build for applications that use getsubopt unconditionally.
Code addition to getopt is negligible.

Fixes:
  http://autobuild.buildroot.net/results/90c318e3a9ef5e626d0a80e36695d34eda21f97e/
  http://autobuild.buildroot.net/results/cd8e9d9a5f454c321071c21192958aeee9c39e73/

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-03-20 23:44:23 +01:00
Alexey Brodkin
826f315d5f uclibc: enable UCLIBC_HAS_STRING_GENERIC_OPT in all configs
Description in uClibc for this optoin is:
--->---
bool "Use faster (but larger) generic string functions"
	default y
	help
	  Answer Y to use the (tweaked) glibc generic string functions.

	  In general, they are faster (but 3-5K larger) than the base
	  uClibc string functions which are optimized solely for size.

	  Many people will answer Y.
--->---

Additional 3-5K of size is not that important if resulting libuClibc.so is
of size about 300k.

But benefits in terms of performance could be pretty significant.

For example on ARC in LMbench we see more than 3 times bump in some tests
--->---
libc bcopy unaligned
...
8.39 - 6.76  (UCLIBC_HAS_STRING_GENERIC_OPT=no)
8.39 - 23.86 (UCLIBC_HAS_STRING_GENERIC_OPT=yes)
--->---

Also since the option in question is default in uClibc I don't expect if
enabled back (it was silently disabled in http://git.buildroot.net/buildroot/commit/?id=cfbf8abc33d86a0cf5c1bb3e0817a22009b7f301 on introduction of NPTL in uClibc
by Khem Raj) it to introduce problems.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Anton Kolesov <anton.kolesov@synopsys.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-12-10 00:00:01 +01:00
Alexey Brodkin
66f4814676 uclibc: explicitly set HAVE_SHARED depending on BR2_PREFER_STATIC_LIB
Now with change of BR2_PREFER_STATIC_LIB meaning to "do not build dynamic libs
and build statically linked applications" it's possible to disable support of
shared libs in uClibc as well as builting of shared libc libs.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gustavo Zacarias <gustavo@zacarias.com.ar>
Cc: Peter Korsgaard <peter@korsgaard.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-10-13 00:24:08 +02:00
Alexey Brodkin
420ccbabee uclibc: build uclibc unstripped by default
uClibc can be built stripped (implemented as link-time option in uClibc).
This could be useful for those who build root fs manually.

In Buildroot there is a global strip stage wich strips most of shared libs
in "target" folder (wexcept kernel modules known to not work properly being
stripped and libpthread required to be non-stripped for correct debugging with
gdb of multi-threaded apps).

So there're few problems with current implementation:
 1. uClibc is being stripped 2 times (first on its build stage, second on
    global Buildroot strip stage)
 2. uClibc libs in "staging" folder are also always stripped except if
    "no strip" (BR2_STRIP_none) is explicitly is selected in Buildroot config.
    That makes it possible to remote debug uClibc libs on target only if target
    rootfs was not stripped (which might not be possible due to huge libs
    like Qt)

This patch disables embedded strip in uClibc (still users may modify uClibc
config and explicitly set "DOSTRIP=yes" if really needed).

Interesting that DOSTRIP was not only selected in uClibc config but also was
force set with Buildroot on uClibc configuration step with UCLIBC_STRIP_CONFIG.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Gustavo Zacarias <gustavo@zacarias.com.ar>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Waldemar Brodkorb <wbx@openadk.org>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-10-12 16:14:17 +02:00
Thomas Petazzoni
a5e92d92e7 uclibc: convert to the package infrastructure
[Peter: update manual to match]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-07-04 00:13:23 +02:00