Examples: Fix compiler warning

[platform/upstream/libusb.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index ac41218..ec07937 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -219,6 +219,7 @@ AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"])
 # headers not available on all platforms but required on others
 AC_CHECK_HEADERS([sys/time.h])
 AC_CHECK_FUNCS(gettimeofday)
+AC_CHECK_HEADERS([signal.h])
 
 AM_CFLAGS="${AM_CFLAGS} -std=gnu99 -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow ${THREAD_CFLAGS} ${VISIBILITY_CFLAGS}"