complibs/ppl: build only C and C++ interfaces for PPL
By default, PPL wants to build interfaces for any of a variety of
langauges it finds on the local host (python, java, possibly perl, also
more esoteric languages such as ocaml and prolog).
These extra interfaces can double the compile time for the library. For
single-process builds, I found a savings of more than 40%:
default / j1: 716s total, 143.2s avg, 0.52s stdev
just_c / j1: 406s total, 81.2s avg, 0.33s stdev
just_c_cpp / j1: 413s total, 82.6s avg, 0.22s stdev
And for multi-process builds, it approached 50%:
default / j4: 625s total, 125.0s avg, 0.57s stdev
just_c / j4: 338s total, 67.6s avg, 1.25s stdev
just_c_cpp / j4: 327s total, 65.4s avg, 0.36s stdev
Since the PPL we build within ct-ng is only used by GCC, we only need to
build the C and C++ interfaces.
Signed-Off-By: Anthony Foiani <anthony.foiani@gmail.com>
1 Original patch from: gentoo/src/patchsets/glibc/2.9/1080_all_glibc-no-inline-gmon.patch
3 -= BEGIN original header =-
4 http://bugs.gentoo.org/196245
5 http://sourceware.org/ml/libc-alpha/2006-05/msg00017.html
7 Attached is a patch to add __attribute__ ((noinline)) to
10 Without this patch, the sec script that processed initfini.s removes a
11 part of inlined call_gmon_start, causing undefined label errors.
13 This patch solves the problem by forcing gcc not to inline
14 call_gmon_start with __attribute__ ((noinline)).
16 Tested by building for arm-none-lixux-gnueabi. OK to apply?
20 2006-05-07 Kazu Hirata <kazu@codesourcery.com>
22 * sysdeps/generic/initfini.c (call_gmon_start): Add
23 __attribute__ ((noinline)).
25 -= END original header =-
27 diff -durN glibc-2_9.orig/sysdeps/generic/initfini.c glibc-2_9/sysdeps/generic/initfini.c
28 --- glibc-2_9.orig/sysdeps/generic/initfini.c 2007-06-17 20:02:40.000000000 +0200
29 +++ glibc-2_9/sysdeps/generic/initfini.c 2009-02-02 22:01:01.000000000 +0100
31 /* The beginning of _init: */
32 asm ("\n/*@_init_PROLOG_BEGINS*/");
35 +static void __attribute__ ((noinline))
38 extern void __gmon_start__ (void) __attribute__ ((weak)); /*weak_extern (__gmon_start__);*/