Not all parts of the build respect --disable-werror.
--- a/Makefile.am
+++ b/Makefile.am
@@ -8,7 +8,7 @@ INCLUDE = -I$(abs_top_builddir)/include \
 		  -I$(abs_top_builddir)/include/xor_codes
 
 AM_CPPFLAGS = $(CPPFLAGS) $(INCLUDE)
-AM_CPPFLAGS += -Werror -Wall
+AM_CPPFLAGS += -Wall
 
 AM_CFLAGS = -fPIC $(AM_CPPFLAGS) @GCOV_FLAGS@ -L/usr/local/lib
 
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -32,7 +32,7 @@ liberasurecode_la_SOURCES = \
 		backends/shss/shss.c \
 		backends/phazrio/libphazr.c
 
-liberasurecode_la_CPPFLAGS = -Werror @GCOV_FLAGS@
+liberasurecode_la_CPPFLAGS = @GCOV_FLAGS@
 liberasurecode_la_LIBADD = \
 		builtin/null_code/libnullcode.la \
 		builtin/xor_codes/libXorcode.la \