diff --git a/tools/Makefile.am b/tools/Makefile.am
index 5fe169cd..60a68c6b 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -5,17 +5,19 @@ noinst_LTLIBRARIES = libshared.la
 AM_CPPFLAGS = -I$(top_srcdir)/include \
               -I$(top_srcdir)/src \
               -I$(top_builddir)/src  # for libinput-version.h
+AM_CFLAGS = $(GCC_CFLAGS)
+AM_CXXFLAGS = $(GCC_CXXFLAGS)
 
 libshared_la_SOURCES = \
 		       shared.c \
 		       shared.h
-libshared_la_CFLAGS = $(LIBEVDEV_CFLAGS)
+libshared_la_CFLAGS = $(AM_CFLAGS) $(LIBEVDEV_CFLAGS)
 libshared_la_LIBADD = $(LIBEVDEV_LIBS)
 
 event_debug_SOURCES = event-debug.c
 event_debug_LDADD = ../src/libinput.la libshared.la $(LIBUDEV_LIBS) $(LIBEVDEV_LIBS)
 event_debug_LDFLAGS = -no-install
-event_debug_CFLAGS = $(LIBUDEV_CFLAGS) $(LIBEVDEV_CFLAGS)
+event_debug_CFLAGS = $(AM_CFLAGS) $(LIBUDEV_CFLAGS) $(LIBEVDEV_CFLAGS)
 
 ptraccel_debug_SOURCES = ptraccel-debug.c
 ptraccel_debug_LDADD = ../src/libfilter.la ../src/libinput.la
@@ -23,12 +25,12 @@ ptraccel_debug_LDFLAGS = -no-install
 
 libinput_list_devices_SOURCES = libinput-list-devices.c
 libinput_list_devices_LDADD = ../src/libinput.la libshared.la $(LIBUDEV_LIBS)
-libinput_list_devices_CFLAGS = $(LIBUDEV_CFLAGS)
+libinput_list_devices_CFLAGS = $(AM_CFLAGS) $(LIBUDEV_CFLAGS)
 dist_man1_MANS = libinput-list-devices.man
 
 libinput_debug_events_SOURCES = $(event_debug_SOURCES)
 libinput_debug_events_LDADD = $(event_debug_LDADD)
-libinput_debug_events_CFLAGS = $(event_debug_CFLAGS)
+libinput_debug_events_CFLAGS = $(AM_CFLAGS) $(event_debug_CFLAGS)
 dist_man1_MANS += libinput-debug-events.man
 
 if BUILD_EVENTGUI
@@ -36,7 +38,7 @@ noinst_PROGRAMS += event-gui
 
 event_gui_SOURCES = event-gui.c
 event_gui_LDADD = ../src/libinput.la libshared.la $(CAIRO_LIBS) $(GTK_LIBS) $(LIBUDEV_LIBS)
-event_gui_CFLAGS = $(CAIRO_CFLAGS) $(GTK_CFLAGS) $(LIBUDEV_CFLAGS)
+event_gui_CFLAGS = $(CAIRO_CFLAGS) $(GTK_CFLAGS) $(LIBUDEV_CFLAGS) $(AM_CFLAGS)
 event_gui_LDFLAGS = -no-install
 endif