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-rw-r--r--examples/stm32/f2/Makefile.include6
1 files changed, 5 insertions, 1 deletions
diff --git a/examples/stm32/f2/Makefile.include b/examples/stm32/f2/Makefile.include
index 690f8c4..10eed79 100644
--- a/examples/stm32/f2/Makefile.include
+++ b/examples/stm32/f2/Makefile.include
@@ -26,14 +26,18 @@ LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
GDB = $(PREFIX)-gdb
+
+TOOLCHAIN_DIR ?= ../../../../..
ifeq ($(wildcard ../../../../../lib/libopencm3_stm32f2.a),)
+ifneq ($(strip $(shell which $(CC))),)
TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
+endif
else
ifeq ($(V),1)
$(info We seem to be building the example in the source directory. Using local library!)
endif
-TOOLCHAIN_DIR := ../../../../..
endif
+
CFLAGS += -Os -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include \
-fno-common -mcpu=cortex-m3 -mthumb -msoft-float -MD -DSTM32F2
LDSCRIPT ?= $(BINARY).ld