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### Environment constants
LGW_PATH ?= ../libloragw
ARCH ?=
CROSS_COMPILE ?=
### External constant definitions
include $(LGW_PATH)/library.cfg
### Constant symbols
CC = $(CROSS_COMPILE)gcc
AR = $(CROSS_COMPILE)ar
CFLAGS = -O2 -Wall -Wextra -std=c99 -I inc
OBJDIR = obj
INCLUDES = $(wildcard inc/*.h)
### Constants for LoRa concentrator HAL library
# List the library sub-modules that are used by the application
LGW_INC = $(LGW_PATH)/inc/config.h
LGW_INC += $(LGW_PATH)/inc/loragw_hal.h
### Linking options
LIBS := -lloragw -lrt
### General build targets
all: util_spectral_scan
clean:
rm -f $(OBJDIR)/*.o
rm -f util_spectral_scan
### HAL library (do no force multiple library rebuild even with 'make -B')
$(LGW_PATH)/inc/config.h:
@if test ! -f $@; then \
$(MAKE) all -C $(LGW_PATH); \
fi
$(LGW_PATH)/libloragw.a: $(LGW_INC)
@if test ! -f $@; then \
$(MAKE) all -C $(LGW_PATH); \
fi
### Sub-modules compilation
$(OBJDIR):
mkdir -p $(OBJDIR)
$(OBJDIR)/%.o: src/%.c $(INCLUDES) | $(OBJDIR)
$(CC) -c $(CFLAGS) -I$(LGW_PATH)/inc $< -o $@
### Main program assembly
util_spectral_scan: $(OBJDIR)/util_spectral_scan.o
$(CC) -L$(LGW_PATH) $^ $(LIBS) -o $@
### EOF
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