Author: Florian Weimer <fweimer@redhat.com>

Date:   Wed Jul 4 16:16:57 2018 +0200

    Makeconfig (ASFLAGS): Always append required assembler flags.

Submitted upstream here:

  https://sourceware.org/ml/libc-alpha/2018-07/msg00077.html

Otherwise, we lose essential flags such as -Wa,--noexecstack due to

the way += works in make due to the ASFLAGS command line override.

diff --git a/Makeconfig b/Makeconfig

index b0b27f0113ac18b8..92e76d6200bbcd5b 100644

--- a/Makeconfig

+++ b/Makeconfig

@@ -1047,7 +1047,7 @@ endif

 ifndef ASFLAGS

 ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))

 endif

-ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)

+override ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)

 ifndef BUILD_CC

 BUILD_CC = $(CC)