diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2007-09-24 09:05:31 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2007-11-20 22:33:38 -0700 |
| commit | 2f155f6c0a1f5e9a306a3f1f4fbe067db7ced3b1 (patch) | |
| tree | 872745bafb23aa357e7abbdfed81d17c0250ca85 /Makefile | |
| parent | f92edbd8a0ef16a2b9127cbb564c09685728e4b0 (diff) | |
[BUILD] Generate include/autoconf.mk from board config files
Use cpp and sed to postprocess config.h and import the defined values
into include/autoconf.mk. autoconf.mk is then included by config.mk to
give 'make' access to the board configuration.
Doing this enables conditional compilation at the Makefile level instead
of by wrapping every .c file with #ifdef/#endif wrappers.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 18 |
1 files changed, 17 insertions, 1 deletions
@@ -342,6 +342,21 @@ $(obj)System.map: $(obj)u-boot grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \ sort > $(obj)System.map +# +# Auto-generate the autoconf.mk file (which is included by all makefiles) +# +# This target actually generates 2 files; autoconf.mk and autoconf.mk.dep. +# the dep file is only include in this top level makefile to determine when +# to regenerate the autoconf.mk file. +$(OBJTREE)/include/autoconf.mk: $(obj)include/config.h + @echo Generating include/autoconf.mk + @# Generate the dependancies + @$(CC) -M $(HOST_CFLAGS) $(CPPFLAGS) -MQ $@ include/common.h > $@.dep + @# Extract the config macros + @$(CPP) $(CFLAGS) -dM include/common.h | sed -n -f tools/scripts/define2mk.sed >> $@ + +sinclude $(OBJTREE)/include/autoconf.mk.dep + ######################################################################### else all $(obj)u-boot.hex $(obj)u-boot.srec $(obj)u-boot.bin \ @@ -361,7 +376,8 @@ CHANGELOG: unconfig: @rm -f $(obj)include/config.h $(obj)include/config.mk \ - $(obj)board/*/config.tmp $(obj)board/*/*/config.tmp + $(obj)board/*/config.tmp $(obj)board/*/*/config.tmp \ + $(obj)include/autoconf.mk $(obj)include/autoconf.mk.dep #======================================================================== # PowerPC |