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software: dependencies the Werner way

This commit is contained in:
Sebastien Bourdeauducq 2012-02-03 12:25:55 +01:00
parent 1a4a6eb445
commit 1ad44b6571
2 changed files with 20 additions and 5 deletions
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20
software/include.mak
View File

@ -7,14 +7,14 @@ AR_normal := $(CROSS_COMPILER)ar
AS_normal := $(CROSS_COMPILER)as
LD_normal := $(CROSS_COMPILER)ld
OBJCOPY_normal := $(CROSS_COMPILER)objcopy
RANLIB_normal := $(CROSS_COMPILER)ranlib
RANLIB_normal := $(CROSS_COMPILER)ranlib
CC_quiet = @echo " CC " $@ && $(CROSS_COMPILER)gcc
AR_quiet = @echo " AR " $@ && $(CROSS_COMPILER)ar
AS_quiet = @echo " AS " $@ && $(CROSS_COMPILER)as
LD_quiet = @echo " LD " $@ && $(CROSS_COMPILER)ld
OBJCOPY_quiet = @echo " OBJCOPY " $@ && $(CROSS_COMPILER)objcopy
RANLIB_quiet = @echo " RANLIB " $@ && $(CROSS_COMPILER)ranlib
RANLIB_quiet = @echo " RANLIB " $@ && $(CROSS_COMPILER)ranlib
ifeq ($(V),1)
CC = $(CC_normal)
@ -22,14 +22,14 @@ ifeq ($(V),1)
AS = $(AS_normal)
LD = $(LD_normal)
OBJCOPY = $(OBJCOPY_normal)
RANLIB = $(RANLIB_normal)
RANLIB = $(RANLIB_normal)
else
CC = $(CC_quiet)
AR = $(AR_quiet)
AS = $(AS_quiet)
LD = $(LD_quiet)
OBJCOPY = $(OBJCOPY_quiet)
RANLIB = $(RANLIB_quiet)
RANLIB = $(RANLIB_quiet)
endif
# Toolchain options
@ -43,3 +43,15 @@ CFLAGS = -O9 -Wall -Wstrict-prototypes -Wold-style-definition -Wshadow \
-msign-extend-enabled -fno-builtin -fsigned-char \
-fsingle-precision-constant $(INCLUDES)
LDFLAGS = -nostdlib -nodefaultlibs
# compile and generate dependencies, based on
# http://scottmcpeak.com/autodepend/autodepend.html
%.o: %.c
$(CC) -c $(CFLAGS) $*.c -o $*.o
@$(CC_normal) -MM $(CFLAGS) $*.c > $*.d
@mv -f $*.d $*.d.tmp
@sed -e 's|.*:|$*.o:|' < $*.d.tmp > $*.d
@sed -e 's/.*://' -e 's/\\$$//' < $*.d.tmp | fmt -1 | \
sed -e 's/^ *//' -e 's/$$/:/' >> $*.d
@rm -f $*.d.tmp

5
software/libbase/Makefile
View File

@ -3,6 +3,9 @@ include $(MMDIR)/software/include.mak
OBJECTS=divsi3.o libc.o console.o system.o board.o uart.o softfloat.o softfloat-glue.o vsnprintf.o atof.o
# pull in dependency info for *existing* .o files
-include $(OBJECTS:.o=.d)
all: libbase.a
libbase.a: $(OBJECTS)
@ -12,4 +15,4 @@ libbase.a: $(OBJECTS)
.PHONY: clean
clean:
rm -f *.o libbase.a .*~ *~ Makefile.bak
rm -f $(OBJECTS) $(OBJECTS:.o=.d) libbase.a .*~ *~ Makefile.bak