build system

.gitignore

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+# Build files
+build/
+libprof.a

Makefile

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+#! /usr/bin/make -f
+# libprof Makefile
+
+cflags := -m3 -mb -ffreestanding -nostdlib -fstrict-volatile-bitfields -Wall \
+          -Wextra -Os -std=c11
+target := sh3eb-elf
+lib    := libprof.a
+
+prefix := $(shell $(target)-gcc -print-search-dirs | grep install \
+                  | sed 's/install: //')
+
+ifeq "$(prefix)" ""
+$(error "Cannot determine compiler install path")
+endif
+
+src := $(wildcard *.c)
+obj := $(src:%=build/%.o)
+
+# Rules
+
+all: $(lib)
+
+$(lib): $(obj)
+	ar rcs $@ $^
+
+build/%.c.o: %.c | build/
+	$(target)-gcc -c $< -o $@ $(cflags)
+
+# Misc rules
+
+clean:
+	@ rm -rf build
+distclean: clean
+	@ rm -f $(lib)
+
+%/:
+	mkdir -p $@
+
+.PRECIOUS: %/
+
+# Install
+
+install:
+	cp $(lib) $(prefix)

libprof.c

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+#include <gint/timer.h>
+#include <gint/mpu/tmu.h>