ptsname_r: Work around bug on Android 4.3. * m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is correct. * lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R is defined, just fix the return value. * doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword: The behaviour of musl libc is nothing to be "fixed", since it is compliant with the next POSIX standard.

Description:
Try to use system libunistring for Unicode string functions.

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

Depends-on:
havelib
iconv

configure.ac:
gl_LIBUNISTRING_OPTIONAL

Makefile.am:

Include:

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

License:
LGPLv3+ or GPLv2

Maintainer:
Paolo Bonzini, Daiki Ueno