Makefile

   1 #PLATFORM ?= x86_64-linux-gnu
   2 PLATFORM ?= x86_64-w64-mingw32
   3
   4 CC ::= x86_64-w64-mingw32-cc
   5
   6 BUILDDIR ?= target/$(PLATFORM)
   7 SRCDIR ?= src
   8
   9 CPPFLAGS ::= -iquotesrc/ $(CPPFLAGS)
  10 CFLAGS ::= -g -std=c99 -Wall -Wextra -Wpedantic -Werror \
  11            -Wno-error=unused-function -Wno-error=unused-parameter $(CFLAGS)
  12 LDFLAGS ::= $(LDFLAGS)
  13 LDLIBS ::= -L/usr/x86_64-w64-mingw32/bin -lm -lopengl32 -lglew32 -lglfw3 -lassimp $(LDLIBS)
  14
  15 # ######
  16 # Paths
  17 # ######
  18
  19 sources ::= main.c \
  20             engine/asset.c \
  21             engine/engine.c \
  22             engine/geometry.c \
  23             engine/input.c \
  24             engine/logger.c \
  25             engine/performance.c \
  26             engine/render.c \
  27             engine/scene.c \
  28             engine/string.c \
  29             engine/tga.c \
  30             engine/ui.c \
  31             game/game.c \
  32             game/input.c \
  33             game/level.c \
  34             game/player.c
  35
  36 srcfiles ::= $(addprefix $(SRCDIR)/, $(sources))
  37
  38 objects ::= $(addprefix $(BUILDDIR)/, $(addsuffix .o, $(srcfiles)))
  39 depfiles ::= $(addprefix $(BUILDDIR)/, $(addsuffix .mk, $(srcfiles)))
  40
  41 # Set executable name for the platform
  42 # TODO Base this on target platform instead of host OS
  43 #ifeq ($(OS),Windows_NT)
  44 #       binext ::= .exe
  45 #else
  46 #       binext ::=
  47 #endif
  48 binary ::= $(BUILDDIR)/shadowclad.exe
  49 #binary ::= $(BUILDDIR)/shadowclad #$(binext)
  50
  51 # ######
  52 # Main build rules
  53 # ######
  54
  55 # Default rule: build executable
  56 $(binary): $(objects)
  57         @mkdir -p $(@D)
  58         @echo "Linking executable"
  59         $(CC) $(LDFLAGS) -o $(binary) $^ $(LOADLIBES) $(LDLIBS)
  60
  61 # Build C translation units
  62 $(objects): $(BUILDDIR)/%.c.o: %.c $(BUILDDIR)/%.c.mk
  63         @mkdir -p $(@D)
  64         @echo "Building $@"
  65         @$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
  66
  67 # ######
  68 # Setup
  69 # ######
  70
  71 # Initialise build environment
  72 init:
  73         @echo "Creating build directory $(BUILDDIR)"
  74         @mkdir -p $(BUILDDIR)
  75 .PHONY: init
  76
  77 # ######
  78 # Aliases
  79 # ######
  80
  81 # Build and run
  82 run: $(binary)
  83         @echo
  84         @$(binary)
  85 .PHONY: run
  86
  87 # Build executable
  88 shadowclad: $(binary)
  89 .PHONY: shadowclad
  90
  91 # ######
  92 # Prerequisites
  93 # ######
  94
  95 # Generate C prerequisite makefiles
  96 $(depfiles): $(BUILDDIR)/%.c.mk: %.c Makefile
  97         @mkdir -p $(@D)
  98         @echo "Generating prerequisites for $<"
  99         @$(CPP) -MM -MT $(BUILDDIR)/$*.c.o -MF $@ $(CPPFLAGS) $<
 100 # Give the same prerequisites to the prerequisite makefile,
 101 # so that it is regenerated whenever any of said prerequisites change
 102         @sed -E -i 's|^([^\s:]+)([ :])|\1 $@\2|' $@
 103
 104 # Include generated C prerequisites
 105 include $(foreach depfile, $(depfiles), $(shell [ -r "$(depfile)" ] && echo "$(depfile)"))
 106
 107 # Do not automatically delete generated prerequisites
 108 .SECONDARY: $(depfiles)
 109
 110 # ######
 111 # Cleanup rules
 112 # ######
 113
 114 clean:
 115         @echo "Removing $(BUILDDIR)"
 116         @rm -rf $(BUILDDIR)
 117 .PHONY: clean