mirror of
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109 lines
2.9 KiB
Makefile
109 lines
2.9 KiB
Makefile
# Makefile for building a single configuration of Wren. It allows the
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# following variables to be passed to it:
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#
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# MODE - The build mode, "debug" or "release".
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# If omitted, defaults to "release".
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# LANG - The language, "c" or "cpp".
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# If omitted, defaults to "c".
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# ARCH - The processor architecture, "32", "64", or nothing, which indicates
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# the compiler's default.
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# If omitted, defaults to the compiler's default.
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#
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# It builds a static library, shared library, and command-line interpreter for
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# the given configuration. Libraries are built to "lib", and the interpreter
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# is built to "bin".
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#
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# The output file is initially "wren". If in debug mode, "d" is appended to it.
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# If the language is "cpp", then "-cpp" is appended to that. If the
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# architecture is not the default then "-32" or "-64" is appended to that.
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# Then, for the libraries, the correct extension is added.
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# Files.
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HEADERS := include/wren.h $(wildcard src/*.h)
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SOURCES := $(wildcard src/*.c)
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BUILD_DIR := build
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CFLAGS := -Wall -Werror -Wsign-compare -Wtype-limits -Wuninitialized
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# TODO: Add -Wextra.
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# Mode configuration.
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ifeq ($(MODE),debug)
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WREN := wrend
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CFLAGS += -O0 -DDEBUG -g
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BUILD_DIR := $(BUILD_DIR)/debug
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else
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WREN += wren
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CFLAGS += -Os
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BUILD_DIR := $(BUILD_DIR)/release
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endif
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# Language configuration.
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ifeq ($(LANG),cpp)
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WREN := $(WREN)-cpp
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CFLAGS += -std=c++98
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FILE_FLAG := -x c++
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BUILD_DIR := $(BUILD_DIR)-cpp
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else
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CFLAGS += -std=c99
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endif
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# Architecture configuration.
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ifeq ($(ARCH),32)
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CFLAGS += -m32
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WREN := $(WREN)-32
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BUILD_DIR := $(BUILD_DIR)-32
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endif
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ifeq ($(ARCH),64)
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CFLAGS += -m64
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WREN := $(WREN)-64
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BUILD_DIR := $(BUILD_DIR)-64
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endif
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# Don't add -fPIC on Windows since it generates a warning which gets promoted
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# to an error by -Werror.
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OS := $(lastword $(subst -, ,$(shell $(CC) -dumpmachine)))
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ifeq ($(OS),mingw32)
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else ifeq ($(OS),cygwin)
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# Do nothing.
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else
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CFLAGS += -fPIC
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endif
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# Clang on Mac OS X has different flags and a different extension to build a
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# shared library.
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ifneq (,$(findstring darwin,$(OS)))
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SHARED_EXT := dylib
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else
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SHARED_LIB_FLAGS := -Wl,-soname,$@.so
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SHARED_EXT := so
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endif
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# TODO: Simplify this if we mode main.c to a different directory.
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OBJECTS := $(addprefix $(BUILD_DIR)/, $(notdir $(SOURCES:.c=.o)))
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# Don't include main.c in the libraries.
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LIB_OBJECTS := $(subst $(BUILD_DIR)/main.o,,$(OBJECTS))
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# Targets ---------------------------------------------------------------------
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all: prep bin/$(WREN) lib/lib$(WREN).a lib/lib$(WREN).$(SHARED_EXT)
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prep:
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@mkdir -p bin lib $(BUILD_DIR)
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# Command-line interpreter.
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bin/$(WREN): $(OBJECTS)
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$(CC) $(CFLAGS) -Iinclude -o $@ $^ -lm
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# Static library.
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lib/lib$(WREN).a: $(LIB_OBJECTS)
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$(AR) rcu $@ $^
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# Shared library.
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lib/lib$(WREN).$(SHARED_EXT): $(LIB_OBJECTS)
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$(CC) $(CFLAGS) -shared $(SHARED_LIB_FLAGS) -o $@ $^
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# Object files.
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$(BUILD_DIR)/%.o: src/%.c $(HEADERS)
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$(CC) -c $(CFLAGS) -Iinclude -o $@ $(FILE_FLAG) $<
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