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Adjust dependency rules to permit per-file flags
[people/ms/u-boot.git] / rules.mk
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1#
2# (C) Copyright 2006
3# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4#
5# See file CREDITS for list of people who contributed to this
6# project.
7#
8# This program is free software; you can redistribute it and/or
9# modify it under the terms of the GNU General Public License as
10# published by the Free Software Foundation; either version 2 of
11# the License, or (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the GNU General Public License
19# along with this program; if not, write to the Free Software
20# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21# MA 02111-1307 USA
22#
23
24#########################################################################
25
26_depend: $(obj).depend
27
47508843
SG
28# Split the source files into two camps: those in the current directory, and
29# those somewhere else. For the first camp we want to support CPPFLAGS_<fname>
30# and for the second we don't / can't.
31PWD_SRCS := $(filter $(notdir $(SRCS)),$(SRCS))
32OTHER_SRCS := $(filter-out $(notdir $(SRCS)),$(SRCS))
33
34# This is a list of dependency files to generate
35DEPS := $(basename $(patsubst %,$(obj).depend.%,$(PWD_SRCS)))
36
37# Join all the dependencies into a single file, in three parts
38# 1 .Concatenate all the generated depend files together
39# 2. Add in the deps from OTHER_SRCS which we couldn't process
40# 3. Add in the HOSTSRCS
41$(obj).depend: $(src)Makefile $(TOPDIR)/config.mk $(DEPS) $(HOSTSRCS)
42 cat /dev/null $(DEPS) >$@
43 @for f in $(OTHER_SRCS); do \
44 g=`basename $$f | sed -e 's/\(.*\)\.[[:alnum:]_]/\1.o/'`; \
45 $(CC) -M $(CPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
46 done
47 @for f in $(HOSTSRCS); do \
48 g=`basename $$f | sed -e 's/\(.*\)\.[[:alnum:]_]/\1.o/'`; \
49 $(HOSTCC) -M $(HOSTCPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
50 done
51
52MAKE_DEPEND = $(CC) -M $(CPPFLAGS) $(EXTRA_CPPFLAGS_DEP) \
53 -MQ $(addsuffix .o,$(obj)$(basename $<)) $< >$@
54
55
56$(obj).depend.%: %.c
57 $(MAKE_DEPEND)
58
59$(obj).depend.%: %.S
60 $(MAKE_DEPEND)
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61
62$(HOSTOBJS): $(obj)%.o: %.c
63 $(HOSTCC) $(HOSTCFLAGS) $(HOSTCFLAGS_$(@F)) $(HOSTCFLAGS_$(BCURDIR)) -o $@ $< -c
64$(NOPEDOBJS): $(obj)%.o: %.c
65 $(HOSTCC) $(HOSTCFLAGS_NOPED) $(HOSTCFLAGS_$(@F)) $(HOSTCFLAGS_$(BCURDIR)) -o $@ $< -c
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66
67#########################################################################