diff --git a/clients/Makefile.am b/clients/Makefile.am
index 7bdc5c398..56b6a2b5c 100644
--- a/clients/Makefile.am
+++ b/clients/Makefile.am
@@ -10,6 +10,7 @@ LDADD = libtoytoolkit.la				\
 	$(top_builddir)/wayland/libwayland-client.la	\
 	$(CLIENT_LIBS) -lrt -lm
 
+AM_CFLAGS = $(GCC_CFLAGS)
 AM_CPPFLAGS = -DDATADIR='"$(datadir)"'
 
 libtoytoolkit_la_SOURCES =			\
diff --git a/compositor/Makefile.am b/compositor/Makefile.am
index 050061479..0b28cade6 100644
--- a/compositor/Makefile.am
+++ b/compositor/Makefile.am
@@ -5,6 +5,7 @@ INCLUDES =					\
 	-I$(top_builddir)/wayland		\
 	$(COMPOSITOR_CFLAGS)
 
+AM_CFLAGS = $(GCC_CFLAGS)
 AM_CPPFLAGS = -DDATADIR='"$(datadir)"'
 
 compositor_LDADD =					\
diff --git a/wayland/Makefile.am b/wayland/Makefile.am
index f778ea3ab..6e48eb841 100644
--- a/wayland/Makefile.am
+++ b/wayland/Makefile.am
@@ -27,6 +27,7 @@ libwayland_client_la_SOURCES =			\
 	wayland-client.c
 
 INCLUDES = $(FFI_CFLAGS)
+AM_CFLAGS = $(GCC_CFLAGS)
 
 include $(top_srcdir)/wayland/scanner.mk