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-rw-r--r--examples/stm32/f1/Makefile.include8
1 files changed, 6 insertions, 2 deletions
diff --git a/examples/stm32/f1/Makefile.include b/examples/stm32/f1/Makefile.include
index 60f44e7..6b87b98 100644
--- a/examples/stm32/f1/Makefile.include
+++ b/examples/stm32/f1/Makefile.include
@@ -25,14 +25,18 @@ LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
GDB = $(PREFIX)-gdb
+
+TOOLCHAIN_DIR ?= ../../../../..
ifeq ($(wildcard ../../../../../lib/libopencm3_stm32f1.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!)
+$(info We seem to be building the example in the source directory. Using local library!)
endif
-TOOLCHAIN_DIR := ../../../../..
endif
+
ARCH_FLAGS = -mthumb -mcpu=cortex-m3 -msoft-float
CFLAGS += -Os -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include \
-fno-common $(ARCH_FLAGS) -MD -DSTM32F1