build-sys: Build atomic-test only if pthread_setaffinity_np() is available

The function seems to be essential to the test, so the test has to be
disabled entirely if pthread_setaffinity_np() is not available.

Fixes: #850

configure.ac

@@ -561,10 +561,12 @@ AC_FUNC_GETGROUPS
 AC_CHECK_FUNCS_ONCE([chmod chown fstat fchown fchmod clock_gettime getaddrinfo getgrgid_r getgrnam_r \
     getpwnam_r getpwuid_r gettimeofday getuid mlock nanosleep \
     pipe posix_fadvise posix_madvise posix_memalign setpgid setsid shm_open \
-    sigaction sleep symlink sysconf uname pthread_setaffinity_np pthread_getname_np pthread_setname_np])
+    sigaction sleep symlink sysconf uname pthread_getname_np pthread_setname_np])
 AC_CHECK_FUNCS([mkfifo], [HAVE_MKFIFO=1], [HAVE_MKFIFO=0])
 AC_SUBST(HAVE_MKFIFO)
 AM_CONDITIONAL(HAVE_MKFIFO, test "x$HAVE_MKFIFO" = "x1")
+AC_CHECK_FUNCS([pthread_setaffinity_np], [HAVE_PTHREAD_SETAFFINITY_NP=1], [HAVE_PTHREAD_SETAFFINITY_NP=0])
+AM_CONDITIONAL(HAVE_PTHREAD_SETAFFINITY_NP, test "x$HAVE_PTHREAD_SETAFFINITY_NP" = "x1")
 
 # X/OPEN
 AC_CHECK_FUNCS_ONCE([readlink])

src/Makefile.am

@@ -296,8 +296,7 @@ TESTS_norun = \
 		sig2str-test \
 		stripnul \
 		echo-cancel-test \
-		lo-latency-test \
-		atomic-test
+		lo-latency-test
 
 # These tests need a running pulseaudio daemon
 TESTS_daemon = \
@@ -316,6 +315,11 @@ TESTS_default += \
 		usergroup-test
 endif
 
+if HAVE_PTHREAD_SETAFFINITY_NP
+TESTS_norun += \
+		atomic-test
+endif
+
 if HAVE_SYS_EVENTFD_H
 TESTS_default += \
 		srbchannel-test