crosstool-ng: patches/glibc/ports-2.12.1/440-alpha-cache-shape.patch@424fa2092ace

scripts/libc: do not build add-ons by default

Currently, no --enable-add-ons option is passed to libc configure when
"$(do_libc_add_ons_list ,)" is empty, which makes configure automatically search
for present add-ons. In that case, all present add-ons are built, although
no add-on was selected by the user in the config. Moreover, this can make the
configure fail if some non-standard add-ons like eglibc-localedef are present.

This behavior also leads to an inconsistency from a user point of view between
the following cases:
- LIBC_ADDONS_LIST="", LIBC_GLIBC_USE_PORTS=n and THREADS="none" in the config,
which makes "$(do_libc_add_ons_list ,)" return "", so all present add-ons
are built.
- LIBC_ADDONS_LIST="", LIBC_GLIBC_USE_PORTS=n and THREADS!="none" in the
config, which makes "$(do_libc_add_ons_list ,)" return the add-on supporting
the chosen threading implementation, e.g. "nptl", so only this add-on is
built.

This patch disables the building of all add-ons in that case.

It is still possible to build all present add-ons by adding --enable-add-ons to
LIBC_GLIBC_EXTRA_CONFIG_ARRAY.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>

     1 older verisons of glibc would build dl-sysdep as shared-only and dl-support as

     2 static-only.  alpha hooks in a cache variable via dl-auxv.h.  newer versions of

     3 glibc build dl-sysdep as both shared and static which means we now have symbol

     4 duplication for static builds with dl-sysdep and dl-support.  since dl-sysdep

     5 is both shared/static, there is no point in hooking dl-support anymore, so we

     6 can punt it.

     8 diff -durN glibc-2.12.1.orig/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/dl-support.c glibc-2.12.1/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/dl-support.c

     9 --- glibc-2.12.1.orig/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/dl-support.c	2009-05-16 10:36:20.000000000 +0200

    10 +++ glibc-2.12.1/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/dl-support.c	2009-11-13 00:50:53.000000000 +0100

    11 @@ -1,2 +1,1 @@

    12 -#include "dl-auxv.h"

    13  #include <elf/dl-support.c>

author	"Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
	Thu Jul 28 22:09:31 2011 +0200 (2011-07-28)
changeset 2573	424fa2092ace
permissions	-rw-r--r--