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 diff -durN gcc-4.4.0.orig/gcc/builtins.c gcc-4.4.0/gcc/builtins.c
2 --- gcc-4.4.0.orig/gcc/builtins.c 2009-03-30 19:42:27.000000000 +0200
3 +++ gcc-4.4.0/gcc/builtins.c 2009-05-27 21:38:01.000000000 +0200
5 trampolines_created = 1;
6 INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
8 + if (warn_trampolines)
9 + warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
14 diff -durN gcc-4.4.0.orig/gcc/common.opt gcc-4.4.0/gcc/common.opt
15 --- gcc-4.4.0.orig/gcc/common.opt 2009-03-28 18:28:45.000000000 +0100
16 +++ gcc-4.4.0/gcc/common.opt 2009-05-27 21:38:01.000000000 +0200
18 Common Var(warn_type_limits) Init(-1) Warning
19 Warn if a comparison is always true or always false due to the limited range of the data type
22 +Common Var(warn_trampolines) Init(1)
23 +Warn whenever a trampoline is generated
26 Common Var(warn_uninitialized) Warning
27 Warn about uninitialized automatic variables