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Only re-compile version.c as often as necessary

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Make bootrom version information pointer a proper symbol (with hacky ld strangeness workaround)
This commit is contained in:
henryk@ploetzli.ch 2009-08-29 06:14:28 +00:00
commit 4271e82d56
7 changed files with 33 additions and 21 deletions
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14
common/Makefile.common
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@ -58,6 +58,7 @@ CFLAGS = -c $(INCLUDE) -Wall $(APP_CFLAGS)
THUMBOBJ = $(patsubst %.c,$(OBJDIR)/%.o,$(THUMBSRC))
ARMOBJ = $(patsubst %.c,$(OBJDIR)/%.o,$(ARMSRC))
ASMOBJ = $(patsubst %.s,$(OBJDIR)/%.o,$(ASMSRC))
VERSIONOBJ = $(OBJDIR)/version.o
$(THUMBOBJ): $(OBJDIR)/%.o: %.c $(INCLUDES)
$(CC) $(CFLAGS) -mthumb -mthumb-interwork -o $@ $<
@ -68,13 +69,16 @@ $(ARMOBJ): $(OBJDIR)/%.o: %.c $(INCLUDES)
$(ASMOBJ): $(OBJDIR)/%.o: %.s
$(CC) $(CFLAGS) -mthumb-interwork -o $@ $<
$(VERSIONOBJ): $(OBJDIR)/%.o: %.c $(INCLUDES)
$(CC) $(CFLAGS) -mthumb -mthumb-interwork -o $@ $<
# This objcopy call translates physical flash addresses to logical addresses
# See ldscript.common. -- Henryk Plötz <henryk@ploetzli.ch> 2009-08-27
$(OBJDIR)/%.s19: $(OBJDIR)/%.elf
$(OBJCOPY) -Osrec --srec-forceS3 --no-change-warnings \
--change-section-address bootphase1-0x100000 \
--change-section-address bootphase2-0x100000 \
--change-section-address fpgaimage-0x100000 \
--change-section-address .bootphase1-0x100000 \
--change-section-address .bootphase2-0x100000 \
--change-section-address .fpgaimage-0x100000 \
--change-section-address .start-0x100000 \
--change-section-address .text-0x100000 \
--change-section-address .rodata-0x100000 $^ $@
@ -90,9 +94,9 @@ DEPENDENCY_FILES = $(patsubst %.c,$(OBJDIR)/%.d,$(notdir $(THUMBSRC))) \
$(patsubst %.s,$(OBJDIR)/%.d,$(notdir $(ASMSRC)))
$(DEPENDENCY_FILES): Makefile ../common/Makefile.common
$(OBJDIR)/%.d: %.c
$(patsubst %.o,%.d,$(THUMBOBJ) $(ARMOBJ)): $(OBJDIR)/%.d: %.c
@$(CC) -MM -MT "$(@) $(@:.d=.o)" $(CFLAGS) $< > $@
$(OBJDIR)/%.d: %.s
$(patsubst %.o,%.d,$(ASMOBJ)):$(OBJDIR)/%.d: %.s
@$(CC) -MM -MT "$(@) $(@:.d=.o)" $(CFLAGS) $< > $@
-include $(DEPENDENCY_FILES)