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: ../4.3.2/110-trampolinewarn.patch
3 -= BEGIN original header =-
4 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-trampolinewarn.patch
5 This trivial patch causes gcc to emit a warning whenever
6 it generates a trampoline. These are otherwise hard to
7 locate. It is rigged to default ON - to have it default
8 to OFF remove the text 'Init(1)' from the common.opt
9 patch, leaving just 'Common Var(warn_trampolines)'.
10 Kevin F. Quinn <kevquinn@gentoo.org> 17 Jan 2006
12 -= END original header =-
14 diff -durN gcc-4.3.3.orig/gcc/builtins.c gcc-4.3.3/gcc/builtins.c
15 --- gcc-4.3.3.orig/gcc/builtins.c 2008-08-19 18:37:13.000000000 +0200
16 +++ gcc-4.3.3/gcc/builtins.c 2009-01-27 22:19:12.000000000 +0100
18 trampolines_created = 1;
19 INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
21 + if (warn_trampolines)
22 + warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
27 diff -durN gcc-4.3.3.orig/gcc/common.opt gcc-4.3.3/gcc/common.opt
28 --- gcc-4.3.3.orig/gcc/common.opt 2008-01-22 15:11:44.000000000 +0100
29 +++ gcc-4.3.3/gcc/common.opt 2009-01-27 22:19:12.000000000 +0100
31 Common Var(warn_system_headers) Warning
32 Do not suppress warnings from system headers
35 +Common Var(warn_trampolines) Init(1)
36 +Warn whenever a trampoline is generated
39 Common Var(warn_uninitialized) Warning
40 Warn about uninitialized automatic variables