Makefile v0.1

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+################################################################################
+# Desc:   APC make script
+# Author: kgr
+# Date:   2016
+################################################################################
+# This makefile builds APC, the Asset Package Compiler for Henge, on the system.
+################################################################################
+# Directories (can override with env vars)
+APC_ROOTDIR := $(if $(APC_ROOTDIR),$(APC_ROOTDIR),.)
+APC_SRCDIR  := $(if $(APC_SRCDIR),$(APC_SRCDIR),$(APC_ROOTDIR)/src)
+
+# APC is built from Ragel, Bison and C source code only.
+ySRC  := $(shell find $(APC_SRCDIR) -type f -name '*.y')
+rlSRC := $(shell find $(APC_SRCDIR) -type f -name '*.rl')
+cSRC  := $(shell find $(APC_SRCDIR) -type f -name '*.c')
+
+# Specify the linker (allow env var override)
+LD    := $(if $(LD),$(LD),ld)
+
+# Generated files from Yacc/Bison and Ragel
+hGEN  := $(ySRC:%.y=%.tab.h)
+cGEN  := $(strip $(ySRC:%.y=%.tab.c) $(rlSRC:%.rl=%.c))
+
+# Rules
+apc-d: $(patsubst %.c,%-d.o,$(cSRC) $(cGEN)) | $(hGEN)
+       $(LD) $(LDFLAGS) $(LDLIBS) $<
+
+apc: $(patsubst %.c,%.o,$(cSRC) $(cGEN)) | $(hGEN)
+       $(LD) $(LDFLAGS) $(LDLIBS) $<
+
+%.tab.h %.tab.c: %.y
+       bison -d $(YFLAGS) $<
+
+cFLAGS = $(strip $(CFLAGS) $(CPPFLAGS) $1 $2 $3 $4 $5 $6 $7 $8 $9)
+GENDEP = $(filter-out $1 \ %:,$(shell $(CC) -MM -MG $1))
+.SECONDEXPANSION:
+%.o: %.c $$(info $$(call GENDEP,$$(dir $$@)%.c))
+       $(CC) $(call cFLAGS,-c,-o $@) $<
+
+%-d.o: %.c $$(info $$@DEPS- $$(call GENDEP,$$(dir $$@)%.c)) $$(call GENDEP,$$(dir $$@)%.c)
+       $(CC) $(call cFLAGS,-c,-Og,-ggdb,-o $@) $<