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https://github.com/dgibson/dtc.git
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26d93f6c92
This patch adds some testcases for dtc's -Oasm mode. Specifically it checks that building the asm will result in the same device tree blob in memory as -Odtb mode would produce, for a variety of trees. This test uncovered two difficulties with our current -Oasm output, both of which are addressed in this patch as well. First, -Oasm output would only be correct if assembled for a big-endian target. Usually that would be the case, when building device trees into a firmware or similar. However this makes life inconvenient for testing on a little-endian target, and one can think up use cases where a program running on a little endian host might want to embed a device tree for a big-endian target. This patch therefore changes -Oasm output to use .byte directives instead of .long throughout in order to generate byte-for-byte identical trees regardless of the endianness of the assembler target. Second, -Oasm output emitted several #define statements which were then used in the innards of the output - i.e. it assumed the output would be processed by cpp before being assembled. That may not be convenient in all build environments, and in any case doesn't work well with the above fix. So, -Oasm output no longer needs to be preprocessed before assembling. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
235 lines
4.6 KiB
Makefile
235 lines
4.6 KiB
Makefile
#
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# Device Tree Compiler
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#
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#
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# Version information will be constructed in this order:
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# EXTRAVERSION might be "-rc", for example.
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# LOCAL_VERSION is likely from command line.
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# CONFIG_LOCALVERSION from some future config system.
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#
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VERSION = 1
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PATCHLEVEL = 2
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SUBLEVEL = 0
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EXTRAVERSION =
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LOCAL_VERSION =
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CONFIG_LOCALVERSION =
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CPPFLAGS = -I libfdt
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CFLAGS = -Wall -g -Os -fPIC -Wpointer-arith -Wcast-qual
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BISON = bison
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LEX = flex
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INSTALL = /usr/bin/install
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DESTDIR =
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PREFIX = $(HOME)
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BINDIR = $(PREFIX)/bin
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LIBDIR = $(PREFIX)/lib
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INCLUDEDIR = $(PREFIX)/include
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#
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# Overall rules
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#
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ifdef V
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VECHO = :
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else
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VECHO = echo " "
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ARFLAGS = rc
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.SILENT:
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endif
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NODEPTARGETS = clean
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ifeq ($(MAKECMDGOALS),)
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DEPTARGETS = all
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else
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DEPTARGETS = $(filter-out $(NODEPTARGETS),$(MAKECMDGOALS))
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endif
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#
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# Rules for versioning
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#
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DTC_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
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VERSION_FILE = version_gen.h
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CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
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else if [ -x /bin/bash ]; then echo /bin/bash; \
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else echo sh; fi ; fi)
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nullstring :=
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space := $(nullstring) # end of line
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localver_config = $(subst $(space),, $(string) \
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$(patsubst "%",%,$(CONFIG_LOCALVERSION)))
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localver_cmd = $(subst $(space),, $(string) \
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$(patsubst "%",%,$(LOCALVERSION)))
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localver_scm = $(shell $(CONFIG_SHELL) ./scripts/setlocalversion)
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localver_full = $(localver_config)$(localver_cmd)$(localver_scm)
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dtc_version = $(DTC_VERSION)$(localver_full)
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# Contents of the generated version file.
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define filechk_version
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(echo "#define DTC_VERSION \"DTC $(dtc_version)\""; )
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endef
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define filechk
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set -e; \
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echo ' CHK $@'; \
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mkdir -p $(dir $@); \
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$(filechk_$(1)) < $< > $@.tmp; \
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if [ -r $@ ] && cmp -s $@ $@.tmp; then \
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rm -f $@.tmp; \
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else \
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echo ' UPD $@'; \
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mv -f $@.tmp $@; \
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fi;
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endef
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include Makefile.convert-dtsv0
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include Makefile.dtc
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include Makefile.ftdump
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BIN += convert-dtsv0
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BIN += dtc
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BIN += ftdump
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all: $(BIN) libfdt
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ifneq ($(DEPTARGETS),)
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-include $(DTC_OBJS:%.o=%.d)
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-include $(CONVERT_OBJS:%.o=%.d)
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-include $(FTDUMP_OBJS:%.o=%.d)
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endif
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#
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# Rules for libfdt
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#
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LIBFDT_objdir = libfdt
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LIBFDT_srcdir = libfdt
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LIBFDT_archive = $(LIBFDT_objdir)/libfdt.a
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LIBFDT_lib = $(LIBFDT_objdir)/libfdt.so
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LIBFDT_include = $(addprefix $(LIBFDT_srcdir)/,$(LIBFDT_INCLUDES))
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LIBFDT_version = $(addprefix $(LIBFDT_srcdir)/,$(LIBFDT_VERSION))
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include $(LIBFDT_srcdir)/Makefile.libfdt
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.PHONY: libfdt
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libfdt: $(LIBFDT_archive) $(LIBFDT_lib)
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$(LIBFDT_archive): $(addprefix $(LIBFDT_objdir)/,$(LIBFDT_OBJS))
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$(LIBFDT_lib): $(addprefix $(LIBFDT_objdir)/,$(LIBFDT_OBJS))
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libfdt_clean:
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@$(VECHO) CLEAN "(libfdt)"
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rm -f $(addprefix $(LIBFDT_objdir)/,$(STD_CLEANFILES))
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rm -f $(LIBFDT_objdir)/*.so
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ifneq ($(DEPTARGETS),)
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-include $(LIBFDT_OBJS:%.o=$(LIBFDT_objdir)/%.d)
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endif
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# This stops make from generating the lex and bison output during
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# auto-dependency computation, but throwing them away as an
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# intermediate target and building them again "for real"
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.SECONDARY: $(DTC_GEN_SRCS) $(CONVERT_GEN_SRCS)
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install: all
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@$(VECHO) INSTALL
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$(INSTALL) -d $(DESTDIR)$(BINDIR)
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$(INSTALL) -m 755 $(BIN) $(DESTDIR)$(BINDIR)
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$(INSTALL) -d $(DESTDIR)$(LIBDIR)
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$(INSTALL) -m 644 $(LIBFDT_lib) $(DESTDIR)$(LIBDIR)
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$(INSTALL) -d $(DESTDIR)$(INCLUDEDIR)
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$(INSTALL) -m 644 $(LIBFDT_include) $(DESTDIR)$(INCLUDEDIR)
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$(VERSION_FILE): Makefile FORCE
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$(call filechk,version)
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dtc: $(DTC_OBJS)
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convert-dtsv0: $(CONVERT_OBJS)
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@$(VECHO) LD $@
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$(LINK.c) -o $@ $^
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ftdump: $(FTDUMP_OBJS)
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#
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# Testsuite rules
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#
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TESTS_PREFIX=tests/
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include tests/Makefile.tests
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#
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# Clean rules
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#
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STD_CLEANFILES = *~ *.o *.so *.d *.a *.i *.s core a.out vgcore.* \
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*.tab.[ch] *.lex.c *.output
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clean: libfdt_clean tests_clean
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@$(VECHO) CLEAN
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rm -f $(STD_CLEANFILES)
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rm -f $(VERSION_FILE)
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rm -f $(BIN)
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#
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# Generic compile rules
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#
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%: %.o
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@$(VECHO) LD $@
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$(LINK.c) -o $@ $^
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%.o: %.c
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@$(VECHO) CC $@
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$(CC) $(CPPFLAGS) $(CFLAGS) -o $@ -c $<
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%.o: %.S
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@$(VECHO) AS $@
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$(CC) $(CPPFLAGS) $(AFLAGS) -D__ASSEMBLY__ -o $@ -c $<
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%.d: %.c
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@$(VECHO) DEP $<
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$(CC) $(CPPFLAGS) -MM -MG -MT "$*.o $@" $< > $@
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%.d: %.S
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@$(VECHO) DEP $<
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$(CC) $(CPPFLAGS) -MM -MG -MT "$*.o $@" $< > $@
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%.i: %.c
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@$(VECHO) CPP $@
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$(CC) $(CPPFLAGS) -E $< > $@
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%.s: %.c
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@$(VECHO) CC -S $@
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$(CC) $(CPPFLAGS) $(CFLAGS) -o $@ -S $<
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%.a:
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@$(VECHO) AR $@
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$(AR) $(ARFLAGS) $@ $^
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$(LIBFDT_lib):
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@$(VECHO) LD $@
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$(CC) $(LDFLAGS) -fPIC -Wl,--version-script=$(LIBFDT_version) -Wl,-soname,$(notdir $@) -shared -o $(LIBFDT_objdir)/libfdt-$(DTC_VERSION).so $^
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ln -s libfdt-$(DTC_VERSION).so $(LIBFDT_objdir)/libfdt.so
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%.lex.c: %.l
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@$(VECHO) LEX $@
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$(LEX) -o$@ $<
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%.tab.c %.tab.h %.output: %.y
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@$(VECHO) BISON $@
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$(BISON) -d $<
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FORCE:
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