GNUmakefile: Enable -Wextra

diff --git a/GNUmakefile b/GNUmakefile
index 4b24d68d199c466d6d7e1639b299810356c5fac1..9061ccf7c6bed1b51e602daa9d494217fc22e998 100644 (file)
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -19,6 +19,7 @@ ifdef CONFIG
        include $(CONFIG)
 
        CFLAGS += -Wall \
+               -Wextra \
                -pedantic \
                -DFACTOR_VERSION="$(VERSION)" \
                -DFACTOR_GIT_LABEL="$(GIT_LABEL)" \