From e5a10ba0c5252b61a43886c47b70bbbf06cb15af Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Sun, 1 Apr 2012 12:33:00 +0000
Subject: Fixed bug 3513897.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4068 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 demos/ARMCM4-STM32F407-DISCOVERY/Makefile | 15 ++++++++++++++-
 demos/ARMCM4-STM32F407-DISCOVERY/chconf.h |  2 --
 2 files changed, 14 insertions(+), 3 deletions(-)

(limited to 'demos')

diff --git a/demos/ARMCM4-STM32F407-DISCOVERY/Makefile b/demos/ARMCM4-STM32F407-DISCOVERY/Makefile
index 975e5f999..0f32eeceb 100644
--- a/demos/ARMCM4-STM32F407-DISCOVERY/Makefile
+++ b/demos/ARMCM4-STM32F407-DISCOVERY/Makefile
@@ -5,7 +5,7 @@
 
 # Compiler options here.
 ifeq ($(USE_OPT),)
-  USE_OPT = -O2 -ggdb -fomit-frame-pointer -falign-functions=16 -mhard-float -mfpu=fpv4-sp-d16 -fsingle-precision-constant
+  USE_OPT = -O2 -ggdb -fomit-frame-pointer -falign-functions=16
 endif
 
 # C specific options here (added to USE_OPT).
@@ -41,6 +41,12 @@ endif
 # Architecture or project specific options
 #
 
+# Enables the use of FPU on Cortex-M4.
+# Enable this if you really want to use the STM FWLib.
+ifeq ($(USE_FPU),)
+  USE_FPU = no
+endif
+
 # Enable this if you really want to use the STM FWLib.
 ifeq ($(USE_FWLIB),)
   USE_FWLIB = no
@@ -200,6 +206,13 @@ ULIBS =
 # End of user defines
 ##############################################################################
 
+ifeq ($(USE_FPU),yes)
+  USE_OPT += -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -fsingle-precision-constant
+  DDEFS += -DCORTEX_USE_FPU=TRUE
+else
+  DDEFS += -DCORTEX_USE_FPU=FALSE
+endif
+
 ifeq ($(USE_FWLIB),yes)
   include $(CHIBIOS)/ext/stm32lib/stm32lib.mk
   CSRC += $(STM32SRC)
diff --git a/demos/ARMCM4-STM32F407-DISCOVERY/chconf.h b/demos/ARMCM4-STM32F407-DISCOVERY/chconf.h
index 3c69cee76..b1f2cd62c 100644
--- a/demos/ARMCM4-STM32F407-DISCOVERY/chconf.h
+++ b/demos/ARMCM4-STM32F407-DISCOVERY/chconf.h
@@ -530,8 +530,6 @@
 /* Port-specific settings (override port settings defaulted in chcore.h).    */
 /*===========================================================================*/
 
-#define CORTEX_USE_FPU                  FALSE
-
 #endif  /* _CHCONF_H_ */
 
 /** @} */
-- 
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