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/2.9/5021_all_2.9-fnmatch.patch
3 -= BEGIN original header =-
4 http://sourceware.org/ml/libc-hacker/2002-11/msg00071.html
6 When fnmatch detects an invalid multibyte character it should fall back to
7 single byte matching, so that "*" has a chance to match such a string.
11 2005-04-12 Andreas Schwab <schwab@suse.de>
13 * posix/fnmatch.c (fnmatch): If conversion to wide character
14 fails fall back to single byte matching.
16 -= END original header =-
18 diff -durN glibc-2_9.orig/posix/fnmatch.c glibc-2_9/posix/fnmatch.c
19 --- glibc-2_9.orig/posix/fnmatch.c 2007-07-28 22:35:00.000000000 +0200
20 +++ glibc-2_9/posix/fnmatch.c 2009-02-02 22:01:25.000000000 +0100
23 if (__builtin_expect (MB_CUR_MAX, 1) != 1)
25 + const char *orig_pattern = pattern;
30 wstring = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
31 n = mbsrtowcs (wstring, &p, n + 1, &ps);
32 if (__builtin_expect (n == (size_t) -1, 0))
34 - XXX Do we have to set `errno' to something which mbsrtows hasn't
37 + /* Something wrong. Fall back to single byte matching. */
38 + goto try_singlebyte;
41 memset (&ps, '\0', sizeof (ps));
44 n = mbsrtowcs (NULL, &string, 0, &ps);
45 if (__builtin_expect (n == (size_t) -1, 0))
47 - XXX Do we have to set `errno' to something which mbsrtows hasn't
50 + /* Something wrong. Fall back to single byte matching. */
51 + goto try_singlebyte;
52 wstring = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
53 assert (mbsinit (&ps));
54 (void) mbsrtowcs (wstring, &string, n + 1, &ps);
57 return internal_fnwmatch (wpattern, wstring, wstring + n,
58 flags & FNM_PERIOD, flags, NULL);
61 + pattern = orig_pattern;
63 # endif /* mbstate_t and mbsrtowcs or _LIBC. */