diff --git a/lib/gssapi/Makefile.am b/lib/gssapi/Makefile.am
index 5e3174cd5..1e0a1136d 100644
--- a/lib/gssapi/Makefile.am
+++ b/lib/gssapi/Makefile.am
@@ -2,6 +2,8 @@
 
 AUTOMAKE_OPTIONS = no-dependencies foreign
 
+CFLAGS = @CFLAGS@ $(WFLAGS)
+
 INCLUDES = -I$(top_builddir)/include -I$(srcdir)/../krb5
 
 lib_LIBRARIES = libgssapi.a
diff --git a/lib/gssapi/krb5/Makefile.am b/lib/gssapi/krb5/Makefile.am
index 5e3174cd5..1e0a1136d 100644
--- a/lib/gssapi/krb5/Makefile.am
+++ b/lib/gssapi/krb5/Makefile.am
@@ -2,6 +2,8 @@
 
 AUTOMAKE_OPTIONS = no-dependencies foreign
 
+CFLAGS = @CFLAGS@ $(WFLAGS)
+
 INCLUDES = -I$(top_builddir)/include -I$(srcdir)/../krb5
 
 lib_LIBRARIES = libgssapi.a