################################################################################
# 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)
+# Yacc
+YACC := bison
+YFLAGS ?= -v -d -Wall
+YCMD = $(YACC) $(YFLAGS) $<
-# 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')
+# Ragel
+RLC ?= ragel
+RLFALGS ?= -C
+RLCMD = $(RLC) $(RLFLAGS) -o $@ $<
+
+# C
+CC ?= gcc
+CFLAGS ?= -Wall
+CCMD = $(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<
-# Specify the linker (allow env var override)
-LD := $(if $(LD),$(LD),ld)
+# Linker
+LD ?= ld
+LDFLAGS ?=
+LDLIBS ?= -lunistring
+apcLIBS ?=
+apc-dLIBS ?=
+LDCMD = $(LD) $(LDFLAGS) $(LDLIBS) $($1LIBS) -o $@ $^
+
+# APC is built from Ragel, Bison and C source code only.
+ySRC := $(shell find ./src -type f -name '*.y')
+rlSRC := $(shell find ./src -type f -name '*.rl')
+cSRC := $(shell find ./src -type f -name '*.c')
# Generated files from Yacc/Bison and Ragel
hGEN := $(ySRC:%.y=%.tab.h)
cGEN := $(strip $(ySRC:%.y=%.tab.c) $(rlSRC:%.rl=%.c))
+# Deps generation function
+cGENDEP = $(if $(wildcard $1),$(subst $(dir $1),,$(filter-out $1 \ %:,$(shell $(CC) -MM -MG $1))),$(info <$1>))
+
+# Driver sources
+DRIVERS := apc testapc
+$(foreach drv,$(DRIVERS),\
+$(eval $(drv)SRC := $(patsubst %.c,%.o,$(filter-out $(patsubst %,src/%.c,$(filter-out $(drv),$(DRIVERS))),$(cSRC) $(cGEN))))\
+$(eval $(drv)-dSRC := $(patsubst %.o,%-d.o,$($(drv)SRC))))
+
# Rules
-apc-d: $(patsubst %.c,%-d.o,$(cSRC) $(cGEN)) | $(hGEN)
- $(LD) $(LDFLAGS) $(LDLIBS) $<
+.SECONDEXPANSION:
+$(DRIVERS:%=%-d) $(DRIVERS): $$($$@SRC) | $(hGEN)
+ $(strip $(call LDCMD,$@))
-apc: $(patsubst %.c,%.o,$(cSRC) $(cGEN)) | $(hGEN)
- $(LD) $(LDFLAGS) $(LDLIBS) $<
+%-d.o: CFLAGS+= -Og -ggdb
+%.o %-d.o: %.c $$(call cGENDEP,$$(dir $$@)%.c)
+ $(strip $(CCMD))
%.tab.h %.tab.c: %.y
- bison -d $(YFLAGS) $<
+ $(strip $(YCMD))
+ mv $(notdir $(<:%.y=%.tab.[ch])) $(dir $@)
-cFLAGS = $(strip $(CFLAGS) $(CPPFLAGS) $1 $2 $3 $4 $5 $6 $7 $8 $9)
-GENDEP = $(filter-out \ %:,$(shell $(CC) -MM -MG $1))
-.SECONDEXPANSION:
-%.o: %.c $$(call GENDEP,$$(dir $$@)%.c)
- $(CC) $(call cFLAGS,-c,-o $@) $<
+%.c: %.rl
+ $(strip $(RLCMD))
-%-d.o: $$(call GENDEP,$$(dir $$@)%.c) $$(info [DEPS|$$@] $$(call GENDEP,$$(dir $$@)%.c))
- $(CC) $(call cFLAGS,-c,-Og,-ggdb,-o $@) $<
+clean: $(wildcard $(cGEN) $(hGEN) $(apcSRC) $(apc-dSRC))
+ $(if $^,rm $^)