source/signal: Implement
diff --git a/test/Makefile.am b/test/Makefile.am
index 3d51b65..5a6c1bb 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -47,6 +47,11 @@
 source_io_CPPFLAGS = $(gtest_cppflags)
 source_io_LDADD = $(gtest_ldadd)
 
+check_PROGRAMS += source_signal
+source_signal_SOURCES = source/signal.cpp
+source_signal_CPPFLAGS = $(gtest_cppflags)
+source_signal_LDADD = $(gtest_ldadd)
+
 check_PROGRAMS += source_time
 source_time_SOURCES = source/time.cpp
 source_time_CPPFLAGS = $(gtest_cppflags)