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Generic makefile for C/C++ with automatic dependency generation, support for deep source file hierarchies and custom intermediate directories. In addition, a setup with multiple test files (e.g. boost test) and mutliple source files containing main() functions is possible.
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| # output binary | |
| TESTBIN := test1 test2 | |
| BIN := main | |
| # sourcefiles containing main() | |
| MAINSRCS := test/test1.cpp test/test2.cpp src/main.cpp | |
| # library source files | |
| LIBSRCS := src/file1.cpp src/file2.cpp ... | |
| #source files | |
| SRCS := $(MAINSRCS) $(LIBSRCS) | |
| # files included in the tarball generated by 'make dist' (e.g. add LICENSE file) | |
| DISTFILES := $(BIN) | |
| # filename of the tar archive generated by 'make dist' | |
| DISTOUTPUT := $(BIN).tar.gz | |
| # intermediate directory for generated object files | |
| OBJDIR := .o | |
| # intermediate directory for generated dependency files | |
| DEPDIR := .d | |
| # library object files, auto generated from source files | |
| LIBOBJS := $(patsubst %,$(OBJDIR)/%.o,$(basename $(LIBSRCS))) | |
| # object files, auto generated from source files | |
| OBJS := $(patsubst %,$(OBJDIR)/%.o,$(basename $(SRCS))) | |
| # dependency files, auto generated from source files | |
| DEPS := $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS))) | |
| # compilers (at least gcc and clang) don't create the subdirectories automatically | |
| $(shell mkdir -p $(dir $(OBJS)) >/dev/null) | |
| $(shell mkdir -p $(dir $(DEPS)) >/dev/null) | |
| # C compiler | |
| CC := gcc | |
| # C++ compiler | |
| CXX := g++ | |
| # linker | |
| LD := g++ | |
| # tar | |
| TAR := tar | |
| # C flags | |
| CFLAGS := -std=c14 | |
| # C++ flags | |
| CXXFLAGS := -std=c++14 | |
| # C/C++ flags | |
| CPPFLAGS := -g -Wall -Wextra -pedantic | |
| # linker flags | |
| LDFLAGS := | |
| # flags required for dependency generation; passed to compilers | |
| DEPFLAGS = -MT $@ -MD -MP -MF $(DEPDIR)/$*.Td | |
| # compile C source files | |
| COMPILE.c = $(CC) $(DEPFLAGS) $(CFLAGS) $(CPPFLAGS) -c -o $@ | |
| # compile C++ source files | |
| COMPILE.cc = $(CXX) $(DEPFLAGS) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ | |
| # link object files to binary | |
| LINK.o = $(LD) $(LDFLAGS) $(LDLIBS) -o $@ | |
| # precompile step | |
| PRECOMPILE = | |
| # postcompile step | |
| POSTCOMPILE = mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d | |
| all: $(BIN) | |
| dist: $(DISTFILES) | |
| $(TAR) -cvzf $(DISTOUTPUT) $^ | |
| .PHONY: clean | |
| clean: | |
| $(RM) -r $(OBJDIR) $(DEPDIR) | |
| .PHONY: distclean | |
| distclean: clean | |
| $(RM) $(BIN) $(DISTOUTPUT) | |
| .PHONY: install | |
| install: | |
| @echo no install tasks configured | |
| .PHONY: uninstall | |
| uninstall: | |
| @echo no uninstall tasks configured | |
| .PHONY: check | |
| check: | |
| @echo no tests configured | |
| .PHONY: help | |
| help: | |
| @echo available targets: all dist clean distclean install uninstall check | |
| $(TESTBIN): %: .o/test/%.o $(LIBOBJS) | |
| $(LINK.o) $^ | |
| $(BIN): %: .o/src/%.o $(LIBOBJS) | |
| $(LINK.o) $^ | |
| $(OBJDIR)/%.o: %.c | |
| $(OBJDIR)/%.o: %.c $(DEPDIR)/%.d | |
| $(PRECOMPILE) | |
| $(COMPILE.c) $< | |
| $(POSTCOMPILE) | |
| $(OBJDIR)/%.o: %.cpp | |
| $(OBJDIR)/%.o: %.cpp $(DEPDIR)/%.d | |
| $(PRECOMPILE) | |
| $(COMPILE.cc) $< | |
| $(POSTCOMPILE) | |
| $(OBJDIR)/%.o: %.cc | |
| $(OBJDIR)/%.o: %.cc $(DEPDIR)/%.d | |
| $(PRECOMPILE) | |
| $(COMPILE.cc) $< | |
| $(POSTCOMPILE) | |
| $(OBJDIR)/%.o: %.cxx | |
| $(OBJDIR)/%.o: %.cxx $(DEPDIR)/%.d | |
| $(PRECOMPILE) | |
| $(COMPILE.cc) $< | |
| $(POSTCOMPILE) | |
| .PRECIOUS = $(DEPDIR)/%.d | |
| $(DEPDIR)/%.d: ; | |
| -include $(DEPS) |
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| #include <iostream> | |
| int main() { | |
| std::cout << "Hello, World!\n"; | |
| return 0; | |
| } |
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