Disable -fno-strict-overflow and enable some -Werror=

configure.ac

@@ -142,7 +142,7 @@ dnl No -fstack-protector-all because it doesn't work on all platforms or archite
 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
 AS_IF([test "x$enable_hardening" != "xno"],
   [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
-   AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"])
+dnl   AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"])
    AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"])
    case $host_os in
      *mingw*)

src/Makefile.am

@@ -198,5 +198,19 @@ if TUNEMU
 LIBS += -lpcap
 endif
 
-AM_CFLAGS = -DCONFDIR=\"$(sysconfdir)\" -DLOCALSTATEDIR=\"$(localstatedir)\" -DSBINDIR=\"$(sbindir)\" -iquote.
+AM_CFLAGS = -DCONFDIR=\"$(sysconfdir)\" -DLOCALSTATEDIR=\"$(localstatedir)\" -DSBINDIR=\"$(sbindir)\" -iquote. \
+	-Weverything -Wno-reserved-id-macro -Wno-padded -Wno-disabled-macro-expansion -Wno-shorten-64-to-32 -Wno-format-nonliteral \
+	-Werror=conditional-uninitialized \
+	-Werror=uninitialized \
+	-Werror=missing-field-initializers \
+	-Werror=unused-parameter \
+	-Werror=missing-variable-declarations \
+	-Wno-conversion \
+	-Wno-date-time \
+	-Wno-shadow \
+	-Wno-vla \
+	-Wno-unused-macros \
+	-Wno-cast-qual \
+	-ferror-limit=10
+#	-Werror \
 #-fsanitize=address