regex: avoid glibc deadlock during configure glibc has a known bug where certain corruptions of the heap can cause malloc to default to printing a debug message that includes a backtrace, but the act of getting the backtrace uses dlopen which in turn calls into malloc, causing a recursive lock ending in deadlock. Thus, when configure is probing for a known glibc heap corruption bug, the overall configure would hang. The solution suggested by glibc developers is to force malloc to quit printing debug messages, which avoids recursive malloc. * m4/regex.m4 (gl_REGEX): Avoid recursive malloc deadlock when glibc bug 15078 in turn triggers bug 16159. Reported by Michal Privoznik. Signed-off-by: Eric Blake <eblake@redhat.com>

Description:
Unicode string functions.

Files:
m4/libunistring.m4
m4/absolute-header.m4
lib/libunistring.valgrind

Depends-on:
havelib
iconv

configure.ac:
gl_LIBUNISTRING

Makefile.am:

Include:
#if HAVE_LIBUNISTRING
# include <unitypes.h>
# include <unistr.h>
# include <uniconv.h>
# include <unistdio.h>
# include <uniname.h>
# include <unictype.h>
# include <uniwidth.h>
# include <uniwbrk.h>
# include <unilbrk.h>
# include <uninorm.h>
# include <unicase.h>
# include <uniregex.h>
# include <unistring/version.h>
#endif

Link:
$(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise

License:
LGPL

Maintainer:
Bruno Haible