My first attempt doesn't seem to have made it through to the list, so...
Add "make miniconfig" target. Only touches the makefile, no C code.
Signed-off-by: Rob Landley <[email protected]>
diff -ur linux-2.6.17.1/scripts/kconfig/Makefile linux-2.6.17.new/scripts/kconfig/Makefile
--- linux-2.6.17.1/scripts/kconfig/Makefile 2006-06-20 05:31:55.000000000 -0400
+++ linux-2.6.17.new/scripts/kconfig/Makefile 2006-07-06 15:51:25.000000000 -0400
@@ -2,7 +2,7 @@
# Kernel configuration targets
# These targets are used from top-level makefile
-PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config
+PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig miniconfig update-po-config
xconfig: $(obj)/qconf
$< arch/$(ARCH)/Kconfig
@@ -23,6 +23,14 @@
silentoldconfig: $(obj)/conf
$< -s arch/$(ARCH)/Kconfig
+MINICONFIG = mini.config
+miniconfig: $(obj)/conf $(MINICONFIG)
+ $(Q)KCONFIG_ALLCONFIG=$(MINICONFIG) $< -n arch/$(ARCH)/Kconfig > /dev/null 2> .config.result ; \
+ cat .config.result ; \
+ RESULT=`cat .config.result`; \
+ rm .config.result ; \
+ if [ ! -z "${RESULT}" ]; then exit 1; fi
+
update-po-config: $(obj)/kxgettext
xgettext --default-domain=linux \
--add-comments --keyword=_ --keyword=N_ \
@@ -79,6 +87,7 @@
@echo ' allmodconfig - New config selecting modules when possible'
@echo ' allyesconfig - New config where all options are accepted with yes'
@echo ' allnoconfig - New config where all options are answered with no'
+ @echo ' miniconfig - New config unpacked from mini.config (or MINICONFIG=file)'
# ===========================================================================
# Shared Makefile for the various kconfig executables:
diff -ur linux-2.6.17.1/scripts/shrinkconfig linux-2.6.17.new/scripts/shrinkconfig
--- linux-2.6.17.1/scripts/shrinkconfig 2006-07-06 16:34:39.000000000 -0400
+++ linux-2.6.17.new/scripts/shrinkconfig 2006-07-06 15:54:40.000000000 -0400
@@ -0,0 +1,86 @@
+#!/bin/bash
+
+# shrinkconfig copyright 2006 by Rob Landley <[email protected]>
+# Licensed under the GNU General Public License version 2.
+
+if [ $# -ne 1 ]
+then
+ echo "Turns current .config into a miniconfig file."
+ echo "Usage: shrinkconfig mini.config"
+ exit 1
+fi
+
+if [ ! -f .config ]
+then
+ echo "Need a .config file to shrink."
+ exit 1
+fi
+LENGTH=$(cat .config | wc -l)
+
+OUTPUT="$1"
+cp .config "$OUTPUT"
+if [ $? -ne 0 ]
+then
+ echo "Couldn't create $OUTPUT"
+ exit 1
+fi
+
+# If we get interrupted, clean up the mess
+
+KERNELOUTPUT=""
+
+function cleanup
+{
+ echo
+ echo "Interrupted."
+ [ ! -z "$KERNELOUTPUT" ] && rm -rf "$KERNELOUTPUT"
+ rm "$OUTPUT"
+ exit 1
+}
+
+trap cleanup HUP INT QUIT TERM
+
+# Since the "O=" argument to make doesn't work recursively, we need to jump
+# through a few hoops to avoid overwriting the .config that we're shrinking.
+
+# If we're building out of tree, we'll have absolute paths to source and build
+# directories in the Makefile.
+
+KERNELSRC=$(sed -n -e 's/KERNELSRC[^/]*:=[^/]*//p' Makefile)
+[ -z "$KERNELSRC" ] && KERNELSRC=$(pwd)
+KERNELOUTPUT=`pwd`/.config.minitemp
+
+mkdir -p "$KERNELOUTPUT" || exit 1
+
+echo "Shrinking .config to $OUTPUT..."
+
+# Loop through all lines in the file
+I=1
+while true
+do
+ if [ $I -gt $LENGTH ]
+ then
+ break
+ fi
+
+ echo -n -e "\r"$I/$LENGTH lines $(cat "$OUTPUT" | wc -c) bytes
+
+ sed -n "${I}!p" "$OUTPUT" > "$KERNELOUTPUT"/.config.test
+ # Do a config with this file
+ make -C "$KERNELSRC" O="$KERNELOUTPUT" allnoconfig KCONFIG_ALLCONFIG="$KERNELOUTPUT"/.config.test > /dev/null
+
+ # Compare. The date changes, so expect a small difference each time.
+ D=$(diff "$KERNELOUTPUT"/.config .config | wc -l)
+ if [ $D -eq 4 ]
+ then
+ mv "$KERNELOUTPUT"/.config.test "$OUTPUT"
+ LENGTH=$[$LENGTH-1]
+ else
+ I=$[$I + 1]
+ fi
+done
+
+rm -rf "$KERNELOUTPUT"
+
+# One extra echo to preserve status line.
+echo
--
Never bet against the cheap plastic solution.
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