Index: src/libcfa/Makefile.am
===================================================================
--- src/libcfa/Makefile.am	(revision c315863ca6b244f425507450d481bda8f139eeee)
+++ src/libcfa/Makefile.am	(revision ddf8a291dbdd3e269386f62a01286c9afab0c65f)
@@ -36,5 +36,5 @@
 	 ${AM_V_GEN}@BACKEND_CC@ @CFA_FLAGS@ -D__CFA_DEBUG__ -O0 -c -o $@ $<
 
-EXTRA_FLAGS = -g -Wall -Wno-unused-function -imacros libcfa-prelude.c @CFA_FLAGS@
+EXTRA_FLAGS = -g -Wall -Werror -Wno-unused-function -imacros libcfa-prelude.c @CFA_FLAGS@
 
 AM_CCASFLAGS = @CFA_FLAGS@
Index: src/libcfa/Makefile.in
===================================================================
--- src/libcfa/Makefile.in	(revision c315863ca6b244f425507450d481bda8f139eeee)
+++ src/libcfa/Makefile.in	(revision ddf8a291dbdd3e269386f62a01286c9afab0c65f)
@@ -416,5 +416,5 @@
 ARFLAGS = cr
 lib_LIBRARIES = $(am__append_1) $(am__append_2)
-EXTRA_FLAGS = -g -Wall -Wno-unused-function -imacros libcfa-prelude.c @CFA_FLAGS@
+EXTRA_FLAGS = -g -Wall -Werror -Wno-unused-function -imacros libcfa-prelude.c @CFA_FLAGS@
 AM_CCASFLAGS = @CFA_FLAGS@
 headers = fstream iostream iterator limits rational stdlib \