crosstool-ng: patches/gcc/4.2.4/260-flatten-switch-stmt-00.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 diff -durN gcc-4.2.1.orig/gcc/stmt.c gcc-4.2.1/gcc/stmt.c

     2 --- gcc-4.2.1.orig/gcc/stmt.c	2007-07-19 05:25:32.000000000 +0200

     3 +++ gcc-4.2.1/gcc/stmt.c	2007-08-03 20:37:19.000000000 +0200

     4 @@ -2512,7 +2512,11 @@

     5  	  use_cost_table

     6  	    = (TREE_CODE (orig_type) != ENUMERAL_TYPE

     7  	       && estimate_case_costs (case_list));

     8 -	  balance_case_nodes (&case_list, NULL);

     9 +	  /* When optimizing for size, we want a straight list to avoid

    10 +	     jumps as much as possible. This basically creates an if-else

    11 +	     chain.  */

    12 +	  if (!optimize_size)

    13 +	    balance_case_nodes (&case_list, NULL);

    14  	  emit_case_nodes (index, case_list, default_label, index_type);

    15  	  emit_jump (default_label);

    16  	}

    17 @@ -3070,6 +3074,7 @@

    18  	    {

    19  	      if (!node_has_low_bound (node, index_type))

    20  		{

    21 +		  if (!optimize_size) /* don't jl to the .default_label. */

    22  		  emit_cmp_and_jump_insns (index,

    23  					   convert_modes

    24  					   (mode, imode,

author	"Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
	Thu Jul 28 22:09:31 2011 +0200 (2011-07-28)
changeset 2573	424fa2092ace
parent 687	b2b6b1d46aa1
permissions	-rw-r--r--