92 lines
2.0 KiB
Makefile
92 lines
2.0 KiB
Makefile
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CC := $(CROSS)gcc
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AR := $(CROSS)ar
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RANLIB := $(CROSS)ranlib
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# Stolen from Linux build system
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comma = ,
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try-run = $(shell set -e; ($(1)) >/dev/null 2>&1 && echo "$(2)" || echo "$(3)")
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cc-option = $(call try-run, $(CC) $(1) -c -xc /dev/null -o /dev/null,$(1),$(2))
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CFLAGS ?= -O2 -g
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WFLAGS := -Wall \
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$(call cc-option,-Wextra) \
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$(call cc-option,-Wwrite-strings) \
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$(call cc-option,-Wno-sign-compare)
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CFLAGS += $(WFLAGS)
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SECTION_CFLAGS := $(call cc-option,-ffunction-sections -fdata-sections -Wl$(comma)--gc-sections)
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CFLAGS += $(SECTION_CFLAGS)
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ifneq ($(WITHOUT_LARGEFILE), 1)
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CPPFLAGS += -D_FILE_OFFSET_BITS=64
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endif
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DESTDIR?=
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PREFIX=/usr
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EXEC_PREFIX=$(PREFIX)
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SBINDIR=$(EXEC_PREFIX)/sbin
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MANDIR=$(PREFIX)/share/man
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INCLUDEDIR=$(PREFIX)/include
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ifndef BUILDDIR
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ifeq ($(origin CROSS),undefined)
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BUILDDIR := $(CURDIR)
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else
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# Remove the trailing slash to make the directory name
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BUILDDIR := $(CURDIR)/$(CROSS:-=)
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endif
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endif
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override BUILDDIR := $(patsubst %/,%,$(BUILDDIR))
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override TARGETS := $(addprefix $(BUILDDIR)/,$(TARGETS))
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ifeq ($(V),1)
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XECHO = @:
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XPRINTF = @:
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Q =
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else
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XECHO = @echo
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XPRINTF = @printf
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Q = @
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endif
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define BECHO
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$(XPRINTF) ' %-7s %s\n' "$1" "$(subst $(BUILDDIR)/,,$@)"
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endef
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all:: $(TARGETS)
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clean::
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rm -f $(BUILDDIR)/*.o $(TARGETS) $(BUILDDIR)/.*.c.dep
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install:: $(TARGETS)
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define _mkdep
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$(BUILDDIR)/$1$2: $(addprefix $(BUILDDIR)/$1,$(obj-$2) $3) $(addprefix $(BUILDDIR)/,$4)
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endef
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define mkdep
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$(call _mkdep,$1,$2,$3 $2.o,$4 lib/libmtd.a)
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endef
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%: %.o $(LDDEPS)
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$(call BECHO,LD)
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$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_$(notdir $@)) -g -o $@ $^ $(LDLIBS) $(LDLIBS_$(notdir $@))
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$(BUILDDIR)/%.a:
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$(call BECHO,AR)
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$(Q)$(AR) cr $@ $^
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$(Q)$(RANLIB) $@
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$(BUILDDIR)/%.o: %.c $(OBJDEPS)
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ifneq ($(BUILDDIR),$(CURDIR))
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$(Q)mkdir -p $(dir $@)
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endif
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$(call BECHO,CC)
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$(Q)$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $< -g -Wp,-MD,$(BUILDDIR)/.$(<F).dep
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.SUFFIXES:
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IGNORE=${wildcard $(BUILDDIR)/.*.c.dep}
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-include ${IGNORE}
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PHONY += all clean install
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.PHONY: $(PHONY)
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