X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=rules.mk;h=f4510b7cb6aa13caad7e2d6422266c2f7844b657;hp=a6bae626796fe0c59dba53867c0bbf33dfac0ac0;hb=aaf5e825606a70ddc8fca8e366d8c16a6fd3cc7c;hpb=0886eef9ba25b9e8da4bbaefc1a0b6da7a9567dc

diff --git a/rules.mk b/rules.mk
index a6bae62679..f4510b7cb6 100644
--- a/rules.mk
+++ b/rules.mk
@@ -1,55 +1,51 @@
 #
-# (C) Copyright 2006
+# (C) Copyright 2006-2013
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
-# See file CREDITS for list of people who contributed to this
-# project.
+# SPDX-License-Identifier:	GPL-2.0+
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; either version 2 of
-# the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-# MA 02111-1307 USA
-#
-
 #########################################################################
 
 _depend:	$(obj).depend
 
-$(obj).depend:	$(src)Makefile $(TOPDIR)/config.mk $(SRCS) $(HOSTSRCS)
-		@rm -f $@
-		@touch $@
-		@for f in $(SRCS); do \
-			g=`basename $$f | sed -e 's/\(.*\)\.[[:alnum:]_]/\1.o/'`; \
-			$(CC) -M $(CPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
-		done
-		@for f in $(HOSTSRCS); do \
-			g=`basename $$f | sed -e 's/\(.*\)\.[[:alnum:]_]/\1.o/'`; \
-			$(HOSTCC) -M $(HOSTCPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
-		done
+# Split the source files into two camps: those in the current directory, and
+# those somewhere else. For the first camp we want to support CPPFLAGS_<fname>
+# and for the second we don't / can't.
+PWD_SRCS := $(filter $(notdir $(SRCS)),$(SRCS))
+OTHER_SRCS := $(filter-out $(notdir $(SRCS)),$(SRCS))
+
+# This is a list of dependency files to generate
+DEPS := $(basename $(patsubst %,$(obj).depend.%,$(PWD_SRCS)))
+
+# Join all the dependencies into a single file, in three parts
+#	1 .Concatenate all the generated depend files together
+#	2. Add in the deps from OTHER_SRCS which we couldn't process
+#	3. Add in the HOSTSRCS
+$(obj).depend:	$(src)Makefile $(TOPDIR)/config.mk $(DEPS) $(OTHER_SRCS) \
+		$(HOSTSRCS)
+	cat /dev/null $(DEPS) >$@
+	@for f in $(OTHER_SRCS); do \
+		g=`basename $$f | sed -e 's/\(.*\)\.[[:alnum:]_]/\1.o/'`; \
+		$(CC) -M $(CPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
+	done
+	@for f in $(HOSTSRCS); do \
+		g=`basename $$f | sed -e 's/\(.*\)\.[[:alnum:]_]/\1.o/'`; \
+		$(HOSTCC) -M $(HOSTCPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
+	done
+
+MAKE_DEPEND = $(CC) -M $(CPPFLAGS) $(EXTRA_CPPFLAGS_DEP) \
+		-MQ $(addsuffix .o,$(obj)$(basename $<)) $< >$@
+
+
+$(obj).depend.%:	%.c
+	$(MAKE_DEPEND)
+
+$(obj).depend.%:	%.S
+	$(MAKE_DEPEND)
 
 $(HOSTOBJS): $(obj)%.o: %.c
 	$(HOSTCC) $(HOSTCFLAGS) $(HOSTCFLAGS_$(@F)) $(HOSTCFLAGS_$(BCURDIR)) -o $@ $< -c
 $(NOPEDOBJS): $(obj)%.o: %.c
 	$(HOSTCC) $(HOSTCFLAGS_NOPED) $(HOSTCFLAGS_$(@F)) $(HOSTCFLAGS_$(BCURDIR)) -o $@ $< -c
 
-$(TOPDIR)/include/asm/arch/asm-offsets.h:	$(TOPDIR)/include/autoconf.mk.dep \
-	$(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.s
-	@echo Generating $@
-	$(TOPDIR)/tools/scripts/make-asm-offsets $(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.s $@
-
-$(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.s:	$(TOPDIR)/include/autoconf.mk.dep \
-	$(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.c
-	$(CC) -DDO_DEPS_ONLY \
-		$(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
-		-o $@ $(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.c -c -S
 #########################################################################