From d2366dfe1d1c0b760022a034ced944784156c9d4 Mon Sep 17 00:00:00 2001
From: Tom Rini <trini@konsulko.com>
Date: Mon, 17 Apr 2017 09:18:00 -0400
Subject: arm: Warn that starting with v2018.01 gcc-6 or later is required

There are more and more cases where if we do not use gcc-6.0 or later we
run into problems where our binaries are too large for the targets.
Given the prevalence of gcc-6.0 or later toolchains at this point in
time, we give notice now that starting with v2018.01 we will require
gcc-6 (or later) for ARM.

Signed-off-by: Tom Rini <trini@konsulko.com>

diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index 907c693..eb09b0e 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -45,7 +45,7 @@ endif
 
 # Only test once
 ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
-archprepare: checkthumb
+archprepare: checkthumb checkgcc6
 
 checkthumb:
 	@if test "$(call cc-name)" = "gcc" -a \
@@ -55,8 +55,18 @@ checkthumb:
 		echo '*** Your board is configured for THUMB mode.'; \
 		false; \
 	fi
+else
+archprepare: checkgcc6
 endif
 
+checkgcc6:
+	@if test "$(call cc-name)" = "gcc" -a \
+			"$(call cc-version)" -lt "0600"; then \
+		echo -n '*** Your GCC is older than 6.0 and will not be '; \
+		echo 'supported starting in v2018.01.'; \
+	fi
+
+
 # Try if EABI is supported, else fall back to old API,
 # i. e. for example:
 # - with ELDK 4.2 (EABI supported), use:
-- 
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