[Xen-devel] [PATCH] xen: arm: prevent building with CONFIG_EARLY_PRINTK if not a debug build

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

early printk on ARM is tied to debug being enabled, so error out instead of 
silently and unexpectedly building without early printk when asked.

Signed-off-by: Ian Campbell <ijc@xxxxxxxxxxxxxx>
---
 xen/arch/arm/Rules.mk | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/xen/arch/arm/Rules.mk b/xen/arch/arm/Rules.mk
index aaa203e..aa2e79f 100644
--- a/xen/arch/arm/Rules.mk
+++ b/xen/arch/arm/Rules.mk
@@ -99,4 +99,12 @@ CFLAGS-$(EARLY_PRINTK) += 
-DEARLY_PRINTK_INC=\"debug-$(EARLY_PRINTK_INC).inc\"
 CFLAGS-$(EARLY_PRINTK) += -DEARLY_PRINTK_BAUD=$(EARLY_PRINTK_BAUD)
 CFLAGS-$(EARLY_PRINTK) += -DEARLY_UART_BASE_ADDRESS=$(EARLY_UART_BASE_ADDRESS)
 CFLAGS-$(EARLY_PRINTK) += -DEARLY_UART_REG_SHIFT=$(EARLY_UART_REG_SHIFT)
+
+else # !debug
+
+ifneq ($(CONFIG_EARLY_PRINTK),)
+# Early printk is dependant on a debug build.
+$(error CONFIG_EARLY_PRINTK enabled for non-debug build)
+endif
+
 endif
-- 
1.8.5.3


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