Fix build error when building a shared libunistring on Android. * tests/uninorm/test-nfc.c (n): Don't define on Android. (main): Add 'volatile', to defeat a GCC optimization that would eliminate the reference. * tests/uninorm/test-nfd.c (n): Don't define on Android. (main): Add 'volatile', to defeat a GCC optimization that would eliminate the reference. * tests/uninorm/test-nfkc.c (n): Don't define on Android. (main): Add 'volatile', to defeat a GCC optimization that would eliminate the reference. * tests/uninorm/test-nfkd.c (n): Don't define on Android. (main): Add 'volatile', to defeat a GCC optimization that would eliminate the reference.

Description:
POSIX compatible signal blocking for threads.

Files:
lib/pthread_sigmask.c
m4/pthread_sigmask.m4

Depends-on:
signal-h
threadlib
sigprocmask     [test $HAVE_PTHREAD_SIGMASK = 0 || test $REPLACE_PTHREAD_SIGMASK = 1]

configure.ac:
gl_FUNC_PTHREAD_SIGMASK
if test $HAVE_PTHREAD_SIGMASK = 0 || test $REPLACE_PTHREAD_SIGMASK = 1; then
  AC_LIBOBJ([pthread_sigmask])
  gl_PREREQ_PTHREAD_SIGMASK
fi
gl_SIGNAL_MODULE_INDICATOR([pthread_sigmask])

Makefile.am:

Include:
<signal.h>

Link:
$(LIB_PTHREAD_SIGMASK)

License:
LGPLv2+

Maintainer:
Paul Eggert, Jim Meyering