diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2b637958..92db188c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -98,12 +98,12 @@ ENDIF ()
 
 ADD_CUSTOM_COMMAND(
     OUTPUT embedded-probes.h
-    COMMAND ${PROJECT_SOURCE_DIR}/misc/probe2trace.pl -a embedded < ${PROJECT_SOURCE_DIR}/quicly-probes.d > ${CMAKE_CURRENT_BINARY_DIR}/embedded-probes.h
+    COMMAND perl ${PROJECT_SOURCE_DIR}/misc/probe2trace.pl -a embedded < ${PROJECT_SOURCE_DIR}/quicly-probes.d > ${CMAKE_CURRENT_BINARY_DIR}/embedded-probes.h
     DEPENDS quicly-probes.d misc/probe2trace.pl
     VERBATIM)
 ADD_CUSTOM_COMMAND(
     OUTPUT quicly-tracer.h
-    COMMAND ${PROJECT_SOURCE_DIR}/misc/probe2trace.pl -a tracer < ${PROJECT_SOURCE_DIR}/quicly-probes.d > ${CMAKE_CURRENT_BINARY_DIR}/quicly-tracer.h
+    COMMAND perl ${PROJECT_SOURCE_DIR}/misc/probe2trace.pl -a tracer < ${PROJECT_SOURCE_DIR}/quicly-probes.d > ${CMAKE_CURRENT_BINARY_DIR}/quicly-tracer.h
     DEPENDS quicly-probes.d misc/probe2trace.pl
     VERBATIM)
 
diff --git a/src/cli.c b/src/cli.c
index d738156f..3b4192c3 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -38,6 +38,7 @@
 #include "quicly/defaults.h"
 #include "quicly/streambuf.h"
 #include "../deps/picotls/t/util.h"
+#include <signal.h>
 
 #define MAX_BURST_PACKETS 10