rules.mk

   1 #
   2 # (C) Copyright 2006-2013
   3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 #
   5 # SPDX-License-Identifier:      GPL-2.0+
   6 #
   7 #########################################################################
   8
   9 _depend:        $(obj).depend
  10
  11 # Split the source files into two camps: those in the current directory, and
  12 # those somewhere else. For the first camp we want to support CPPFLAGS_<fname>
  13 # and for the second we don't / can't.
  14 PWD_SRCS := $(filter $(notdir $(SRCS)),$(SRCS))
  15 OTHER_SRCS := $(filter-out $(notdir $(SRCS)),$(SRCS))
  16
  17 # This is a list of dependency files to generate
  18 DEPS := $(basename $(patsubst %,$(obj).depend.%,$(PWD_SRCS)))
  19
  20 # Join all the dependencies into a single file, in three parts
  21 #       1 .Concatenate all the generated depend files together
  22 #       2. Add in the deps from OTHER_SRCS which we couldn't process
  23 #       3. Add in the HOSTSRCS
  24 $(obj).depend:  $(src)Makefile $(TOPDIR)/config.mk $(DEPS) $(OTHER_SRCS) \
  25                 $(HOSTSRCS)
  26         cat /dev/null $(DEPS) >$@
  27         @for f in $(OTHER_SRCS); do \
  28                 g=`basename $$f | sed -e 's/\(.*\)\.[[:alnum:]_]/\1.o/'`; \
  29                 $(CC) -M $(CPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
  30         done
  31         @for f in $(HOSTSRCS); do \
  32                 g=`basename $$f | sed -e 's/\(.*\)\.[[:alnum:]_]/\1.o/'`; \
  33                 $(HOSTCC) -M $(HOSTCPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
  34         done
  35
  36 MAKE_DEPEND = $(CC) -M $(CPPFLAGS) $(EXTRA_CPPFLAGS_DEP) \
  37                 -MQ $(addsuffix .o,$(obj)$(basename $<)) $< >$@
  38
  39
  40 $(obj).depend.%:        %.c
  41         $(MAKE_DEPEND)
  42
  43 $(obj).depend.%:        %.S
  44         $(MAKE_DEPEND)
  45
  46 $(HOSTOBJS): $(obj)%.o: %.c
  47         $(HOSTCC) $(HOSTCFLAGS) $(HOSTCFLAGS_$(@F)) $(HOSTCFLAGS_$(BCURDIR)) -o $@ $< -c
  48 $(NOPEDOBJS): $(obj)%.o: %.c
  49         $(HOSTCC) $(HOSTCFLAGS_NOPED) $(HOSTCFLAGS_$(@F)) $(HOSTCFLAGS_$(BCURDIR)) -o $@ $< -c
  50
  51 #########################################################################