Add build system for linux

Makefile

@@ -0,0 +1,34 @@
+SRCS :=  AudioLib/main.c
+INCLUDES := -Iaudio/include
+
+BUILDDIR = .build
+TARGET := libaudio-test
+OBJS := $(addprefix $(BUILDDIR)/, $(patsubst %.c,%.o, $(SRCS)))
+
+CC = gcc
+AR = ar
+PKGCONFIG = pkg-config
+CFLAGS = --std=gnu99 -Wall
+
+all: $(TARGET)
+
+$(TARGET): $(OBJS) | audiolib
+	$(CC) `$(PKGCONFIG) --libs ao` -Laudio/.build/ -Laudio/.build/libmad -Laudio/.build/speexdsp -o $(TARGET) $(OBJS) -laudio -lmad -lspeexresampler -lm
+
+audiolib:
+	(cd audio; make)
+
+$(BUILDDIR)/%.o: %.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c $< -o $@
+
+$(OBJS): | $(BUILDDIR)
+
+$(BUILDDIR):
+	mkdir -p $(BUILDDIR)/AudioLib
+
+.PHONY: clean
+
+clean:
+	-rm $(OBJS)
+	-rm $(TARGET)
+	(cd audio; make clean)

audio/Makefile

@@ -0,0 +1,48 @@
+SRCS := \
+	audio.c \
+	audio_internal.c \
+	audio_source_file.c \
+	audio_source_testtone.c \
+	audio_demuxer_mp3.c \
+	audio_decoder_mp3.c \
+	audio_filter_param_eq.c \
+	audio_filter_resample.c \
+	audio_sink_file.c \
+	audio_sink_libao.c
+
+INCLUDES := -Iinclude
+
+BUILDDIR = .build
+TARGET := $(BUILDDIR)/libaudio.a
+OBJS := $(addprefix $(BUILDDIR)/, $(patsubst %.c,%.o, $(SRCS)))
+
+CC = gcc
+AR = ar
+CFLAGS = --std=gnu99 -Wall
+
+all: $(TARGET) $(BUILDDIR)/libmad/libmad.a $(BUILDDIR)/speexdsp/libspeexresampler.a
+
+$(TARGET): $(OBJS)
+	$(AR) -cr $(TARGET) $(OBJS)
+
+$(BUILDDIR)/libmad/libmad.a:
+	(cd deps/mp3; make BUILDDIR=$(abspath $(BUILDDIR)/libmad))
+
+$(BUILDDIR)/speexdsp/libspeexresampler.a:
+	(cd deps/resampler; make BUILDDIR=$(abspath $(BUILDDIR)/speexdsp))
+
+$(BUILDDIR)/%.o: %.c include/%.h
+	$(CC) $(INCLUDES) $(CFLAGS) -c $< -o $@
+
+$(OBJS): | $(BUILDDIR)
+
+$(BUILDDIR):
+	mkdir -p $(BUILDDIR)
+
+.PHONY: clean
+
+clean:
+	-rm $(OBJS)
+	-rm $(TARGET)
+	(cd deps/mp3; make BUILDDIR=$(abspath $(BUILDDIR)/libmad) clean)
+	(cd deps/resampler; make BUILDDIR=$(abspath $(BUILDDIR)/speexdsp) clean)

audio/deps/mp3/Makefile

@@ -0,0 +1,39 @@
+SRCS := \
+	bit.c \
+	fixed.c \
+	frame.c \
+	huffman.c \
+	layer3.c \
+	layer12.c \
+	stream.c \
+	synth.c \
+	timer.c \
+	version.c
+
+
+BUILDDIR = .build
+TARGET := $(BUILDDIR)/libmad.a
+OBJS := $(addprefix $(BUILDDIR)/, $(patsubst %.c,%.o, $(SRCS)))
+
+CC = gcc
+AR = ar
+CFLAGS = --std=gnu99 -Wall
+
+all: $(TARGET)
+
+$(TARGET): $(OBJS)
+	$(AR) -cr $(TARGET) $(OBJS)
+
+$(BUILDDIR)/%.o: %.c %.h config.h 
+	$(CC) $(CFLAGS) -c $< -o $@
+
+$(OBJS): | $(BUILDDIR)
+
+$(BUILDDIR):
+	mkdir -p $(BUILDDIR)
+
+.PHONY: clean
+
+clean:
+	-rm $(OBJS)
+	-rm $(TARGET)

audio/deps/resampler/Makefile

@@ -0,0 +1,28 @@
+SRCS := resample.c
+
+BUILDDIR = .build
+TARGET := $(BUILDDIR)/libspeexresampler.a
+OBJS := $(addprefix $(BUILDDIR)/, $(patsubst %.c,%.o, $(SRCS)))
+
+CC = gcc
+AR = ar
+CFLAGS = --std=gnu99 -Wall
+
+all: $(TARGET)
+
+$(TARGET): $(OBJS)
+	$(AR) -cr $(TARGET) $(OBJS)
+
+$(BUILDDIR)/%.o: %.c config.h 
+	$(CC) $(CFLAGS) -c $< -o $@
+
+$(OBJS): | $(BUILDDIR)
+
+$(BUILDDIR):
+	mkdir -p $(BUILDDIR)
+
+.PHONY: clean
+
+clean:
+	-rm $(OBJS)
+	-rm $(TARGET)

shell.nix

@@ -0,0 +1,11 @@
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.mkShell {
+    nativeBuildInputs = with pkgs.buildPackages; [
+      libao
+      pkg-config
+      gcc
+      file
+    ];
+    shellHook = ''
+    '';
+}