Generic [GNU] Makefile for C projects on OS X (or otherwise), using pkg-config

Makefile

# Output
TARGET   = my_binary

# OS X default is a GCC frontend to LLVM
# Real GCC can be installed via, e.g., Homebrew
CC       = gcc
LD       = ld

# List of library dependencies
# pkg-config can be installed via, e.g., Homebrew
LIBS     = libfoo \
           libbar

# Tweak compilation flags (e.g., remove -pthread) as required
# n.b., -Wgnu is LLVM-specific
CFLAGS  += -std=gnu11 -Wpedantic -Wall -Wextra -Werror -Wgnu
CFLAGS  += -O2 -g
CFLAGS  += -pthread
CFLAGS  += $(shell pkg-config --cflags $(LIBS))

# Tweak OS X linker flags as required
LDFLAGS += -arch x86_64 -macosx_version_min 10.9.0 -lSystem
LDFLAGS += $(shell pkg-config --libs $(LIBS))

# Every source file should compile into an object,
# which are ultimately all linked into the final binary
SOURCE   = $(wildcard *.c)
OBJECTS  = $(SOURCE:.c=.o)

$(TARGET): $(OBJECTS)
	$(LD) $(LDFLAGS) $+ -o $@

%.o: %.c
	$(CC) -c $(CFLAGS) $^

clean:
	rm -f $(TARGET)
	rm -f $(OBJECTS)

echo:
	@echo "TARGET:  $(TARGET)"
	@echo "SOURCE:  $(SOURCE)"
	@echo "OBJECTS: $(OBJECTS)"
	@echo "CFLAGS:  $(CFLAGS)"
	@echo "LDFLAGS: $(LDFLAGS)"

.PHONY: clean echo