diff options
| -rw-r--r-- | Makefile | 18 | ||||
| -rw-r--r-- | config.mk | 3 | ||||
| -rw-r--r-- | tools/scripts/define2mk.sed | 29 |
3 files changed, 49 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 @@ -87,6 +87,9 @@ ifdef BOARD sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules endif +# Load generated board configuration +sinclude $(OBJTREE)/include/autoconf.mk + ######################################################################### CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ diff --git a/tools/scripts/define2mk.sed b/tools/scripts/define2mk.sed new file mode 100644 index 000000000..6464627ea --- /dev/null +++ b/tools/scripts/define2mk.sed @@ -0,0 +1,29 @@ +# +# Sed script to parse CPP macros and generate output usable by make +# +# It is expected that this script is fed the output of 'gpp -dM' +# which preprocesses the common.h header files and outputs the final +# list of CPP macros (and whitespace is sanitized) +# + +# Only process values prefixed with #define CONFIG_ +/^#define CONFIG_[A-Za-z0-9_]\+/ { + # Strip the #define prefix + s/#define *//; + # Change to form CONFIG_*=VALUE + s/ \+/=/; + # Drop trailing spaces + s/ *$//; + # drop quotes around string values + s/="\(.*\)"$/=\1/; + # Concatenate string values + s/" *"//g; + # Wrap non-numeral values with quotes + s/=\(.*\?[^0-9].*\)$/=\"\1\"/; + # Change '1' and empty values to "y" (not perfect, but + # supports conditional compilation in the makefiles + s/=$/=y/; + s/=1$/=y/; + # print the line + p +} |