Makefile.rules

#
# Makefile for libphoenix - pattern rules for compiling and linking
#
# Copyright 2012-2018 Phoenix Systems
#

ifeq (,$(TOPDIR))
$(error Only main Makefile can be used for compilation)
endif

CURR_SUFFIX := $(patsubst $(TOPDIR)/%,%,$(abspath $(CURDIR))/)
PREFIX_O := $(BUILD_DIR)/$(CURR_SUFFIX)
PREFIX_A := $(BUILD_DIR)/$(CURR_SUFFIX)

# target install paths, can be provided exterally
PREFIX_PROG ?= $(PREFIX_BUILD)/prog/
PREFIX_PROG_STRIPPED ?= $(BUILD_DIR)/prog.stripped/

ARCH_OBJS := $(patsubst  %,$(PREFIX_O)%,$(ARCH_SRCS:.c=.o)) $(patsubst %,$(PREFIX_O)%,$(ARCH_ASMS:.S=.o))

# building programs
PROGS_UNSTRIPPED := $(patsubst %,$(PREFIX_PROG)%,$(PROGS))
PROGS_STRIPPED   := $(patsubst %,$(PREFIX_PROG_STRIPPED)%,$(PROGS))
PROGS_BASE_OBJS  := $(patsubst %,$(PREFIX_O)%,$(PROGS:=.o))
PROGS_OBJS       := $(patsubst %,$(PREFIX_O)%,$(PROGS_SRCS:.c=.o))

# suppress 'nothing to be done', prevent to delete intermediate files
all: $(ARCH) $(PROGS_UNSTRIPPED) $(PROGS_STRIPPED) $(PROGS_BASE_OBJS) $(PROGS_OBJS)
	@echo >/dev/null;

# add include path for auto-generated files
CFLAGS += -I"$(BUILD_DIR)/$(CURR_SUFFIX)"

# try to find LDLIBS in toolchain/provided search paths to add dependencies
PSMK_LDPATH := $(subst ",,$(patsubst -L%,%,$(filter -L%,$(LDFLAGS)))) $(shell $(CC) $(CFLAGS) -print-search-dirs |grep "libraries: " |tr : " ")
PSMK_RESOLVED_LDLIBS := $(filter-out -l%,$(LDLIBS)) $(foreach lib,$(patsubst -l%,lib%.a,$(LDLIBS)),$(foreach ldpath,$(PSMK_LDPATH),$(wildcard $(ldpath)/$(lib))))


$(PREFIX_O)%.o: %.c
	@mkdir -p $(@D)
	$(SIL)(printf "CC  %s/%-24s\n" "$(notdir $(@D))" "$<")
	$(SIL)$(CC) -c $(CFLAGS) "$<" -o "$@"
	$(SIL)$(CC) -M  -MD -MP -MF $(PREFIX_O)$*.c.d -MT "$@" $(CFLAGS) $<


$(PREFIX_O)%.o: %.S
	@mkdir -p $(@D)
	$(SIL)(printf "ASM %-24s\n" "$<")
	$(SIL)$(CC) -c $(CFLAGS) "$<" -o "$@"
	$(SIL)$(CC) -M  -MD -MP -MF $(PREFIX_O)$*.S.d -MT "$@" $(CFLAGS) $<


$(PREFIX_A)%.a:
	@mkdir -p $(@D),
	@(printf "AR  %s/%-24s  \n" "$(notdir $(@D))" "$(@F)")
	$(SIL)$(AR) $(ARFLAGS) $@ $^ 2>/dev/null


$(PREFIX_PROG)%: $(PREFIX_O)%.o $(PROGS_OBJS) $(PSMK_RESOLVED_LDLIBS) $(LIB)
	@mkdir -p $(@D)
	@(printf "LD  %s/%-24s\n" "$(notdir $(@D))" "$(@F)")
	$(SIL)$(LD) $(LDFLAGS) -o "$@" $(filter %.o,$^) $(LDLIBS) $(LIB) $(GCCLIB)


$(PREFIX_PROG_STRIPPED)%: $(PREFIX_PROG)%
	@mkdir -p $(@D)
	@(printf "STR %s/%-24s\n" "$(notdir $(@D))" "$(@F)")
	$(SIL)$(STRIP) -s -o "$@" "$<"


$(ARCH): $(ARCH_OBJS)


# include file dependencies
ALL_D := $(wildcard $(PREFIX_O)*.d)
-include $(ALL_D)

.PHONY: all clean