Makefile

   1 PLATFORM ?= x86_64-linux-gnu
   2
   3 BUILDDIR ?= target/$(PLATFORM)
   4 SRCDIR ?= src
   5
   6 CPPFLAGS ::= -iquotesrc/ $(CPPFLAGS)
   7 CFLAGS ::= -g -std=c99 -Wall -Wextra -Wpedantic -Werror \
   8            -Wno-error=unused-function -Wno-error=unused-parameter $(CFLAGS)
   9 LDFLAGS ::= $(LDFLAGS)
  10 LDLIBS ::= -lm -lGL -lGLEW -lglfw -lassimp $(LDLIBS)
  11
  12 # ######
  13 # Paths
  14 # ######
  15
  16 sources ::= main.c \
  17             engine/asset.c \
  18             engine/engine.c \
  19             engine/geometry.c \
  20             engine/input.c \
  21             engine/logger.c \
  22             engine/performance.c \
  23             engine/render.c \
  24             engine/scene.c \
  25             engine/string.c \
  26             engine/tga.c \
  27             engine/ui.c \
  28             game/game.c \
  29             game/input.c \
  30             game/level.c \
  31             game/player.c
  32
  33 srcfiles ::= $(addprefix $(SRCDIR)/, $(sources))
  34
  35 objects ::= $(addprefix $(BUILDDIR)/, $(addsuffix .o, $(srcfiles)))
  36 depfiles ::= $(addprefix $(BUILDDIR)/, $(addsuffix .mk, $(srcfiles)))
  37
  38 # Set executable name for the platform
  39 # TODO Base this on target platform instead of host OS
  40 #ifeq ($(OS),Windows_NT)
  41 #       binext ::= .exe
  42 #else
  43 #       binext ::=
  44 #endif
  45 binary ::= $(BUILDDIR)/shadowclad #$(binext)
  46
  47 # ######
  48 # Main build rules
  49 # ######
  50
  51 # Default rule: build executable
  52 $(binary): $(objects)
  53         @mkdir -p $(@D)
  54         @echo "Linking executable"
  55         @$(CC) $(LDFLAGS) -o $(binary) $^ $(LOADLIBES) $(LDLIBS)
  56
  57 # Build C translation units
  58 $(objects): $(BUILDDIR)/%.c.o: %.c $(BUILDDIR)/%.c.mk
  59         @mkdir -p $(@D)
  60         @echo "Building $@"
  61         @$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
  62
  63 # ######
  64 # Setup
  65 # ######
  66
  67 # Initialise build environment
  68 init:
  69         @echo "Creating build directory $(BUILDDIR)"
  70         @mkdir -p $(BUILDDIR)
  71 .PHONY: init
  72
  73 # ######
  74 # Aliases
  75 # ######
  76
  77 # Build and run
  78 run: $(binary)
  79         @echo
  80         @$(binary)
  81 .PHONY: run
  82
  83 # Build executable
  84 shadowclad: $(binary)
  85 .PHONY: shadowclad
  86
  87 # ######
  88 # Prerequisites
  89 # ######
  90
  91 # Generate C prerequisite makefiles
  92 $(depfiles): $(BUILDDIR)/%.c.mk: %.c Makefile
  93         @mkdir -p $(@D)
  94         @echo "Generating prerequisites for $<"
  95         @$(CPP) -MM -MT $(BUILDDIR)/$*.c.o -MF $@ $(CPPFLAGS) $<
  96 # Give the same prerequisites to the prerequisite makefile,
  97 # so that it is regenerated whenever any of said prerequisites change
  98         @sed -E -i 's|^([^\s:]+)([ :])|\1 $@\2|' $@
  99
 100 # Include generated C prerequisites
 101 include $(foreach depfile, $(depfiles), $(shell [ -r "$(depfile)" ] && echo "$(depfile)"))
 102
 103 # Do not automatically delete generated prerequisites
 104 .SECONDARY: $(depfiles)
 105
 106 # ######
 107 # Cleanup rules
 108 # ######
 109
 110 clean:
 111         @echo "Removing $(BUILDDIR)"
 112         @rm -rf $(BUILDDIR)
 113 .PHONY: clean