Files:
tests/test-asyncsafe-spin1.c
tests/test-asyncsafe-spin2.c
tests/atomic-int-gnulib.h
m4/semaphore.m4

Depends-on:
thread
lock
yield

configure.ac:
AC_CHECK_HEADERS_ONCE([semaphore.h])
AC_CHECK_DECLS_ONCE([alarm])
AC_REQUIRE([gl_SEMAPHORE])

Makefile.am:
TESTS += test-asyncsafe-spin1 test-asyncsafe-spin2
check_PROGRAMS += test-asyncsafe-spin1 test-asyncsafe-spin2
test_asyncsafe_spin2_LDADD = $(LDADD) @LIBMULTITHREAD@ @YIELD_LIB@ @LIB_SEMAPHORE@