From 655c5d2c1124182ba336db368474cf4de0b9ce9d Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Thu, 21 Feb 2019 19:28:14 -0800
Subject: [PATCH] altos: Allow applications to override newlib printf selection

Re-defining NEWLIB_PRINTF_CFLAGS will allow applications to select
printf with floating point support if desired.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 src/Makefile.defs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Makefile.defs b/src/Makefile.defs
index 6df0c3fe..d52cc706 100644
--- a/src/Makefile.defs
+++ b/src/Makefile.defs
@@ -20,10 +20,12 @@ WARN_FLAGS=-Wall -Wextra -Werror -Wcast-align \
 
 OPT=-Os
 
+NEWLIB_PRINTF_CFLAGS = 	-DNEWLIB_INTEGER_PRINTF_SCANF
+
 NEWLIB_CFLAGS= \
 	-ffreestanding -nostdlib \
-	-DNEWLIB_INTEGER_PRINTF_SCANF \
-	-isystem $(NEWLIB_NANO)/arm-none-eabi/include
+	-isystem $(NEWLIB_NANO)/arm-none-eabi/include \
+	$(NEWLIB_PRINTF_CFLAGS)
 
 AO_CFLAGS=\
 	-std=gnu99 \
-- 
2.30.2