work on adding testsuite runs to randomconfig test builds

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

scripts/randomtest

@@ -1,86 +1,88 @@
 #!/bin/sh
 
-# Select which libc to build against
-libc="glibc" # assumed native
-# static, cross-compilation
-libc="uclibc"
+# If not specified in environment...
+if ! test "$LIBC"; then
+	# Select which libc to build against
+	LIBC="glibc"
+	LIBC="uclibc"
+fi
 # x86 32-bit:
-uclibc_cross="i486-linux-uclibc-"
+#CROSS_COMPILER_PREFIX="i486-linux-uclibc-"
 # My system has strange prefix for x86 64-bit uclibc:
-#uclibc_cross="x86_64-pc-linux-gnu-"
+#CROSS_COMPILER_PREFIX="x86_64-pc-linux-gnu-"
 
-test -d tree || exit 1
+if test $# -lt 2 || ! test -d "$1" || test -e "$2"; then
+	echo "Usage: $0 SRC_DIR TMP_DIR"
+	echo
+	echo "SRC_DIR will be copied to TMP_DIR directory."
+	echo "Then a random build will be performed."
+	echo
+	echo "Useful variables:"
+	echo "\$LIBC, \$CROSS_COMPILER_PREFIX, \$MAKEOPTS"
+	exit 1
+fi
 
-dir=test.$$
-while test -e "$dir" -o -e failed."$dir"; do
-    dir=test."$RANDOM"
-done
+cp -dpr -- "$1" "$2" || { echo "copy error"; exit 1; }
+cd -- "$2" || { echo "cd $dir error"; exit 1; }
 
-cp -dpr tree "$dir" || exit 1
-cd "$dir" || exit 1
-
-echo "Running randconfig test in $dir..." >&2
-
-make randconfig >/dev/null || exit 1
+# Generate random config
+make randconfig >/dev/null || { echo "randconfig error"; exit 1; }
 
+# Tweak resulting config
 cat .config \
-| grep -v ^CONFIG_DEBUG_PESSIMIZE= \
+| grep -v CONFIG_DEBUG_PESSIMIZE \
 | grep -v CONFIG_WERROR \
-| cat >.config.new
-mv .config.new .config
-#echo CONFIG_WERROR=y >>.config
-echo '# CONFIG_WERROR is not set' >>.config
-
-test "$libc" = glibc && {
-cat .config \
-| grep -v CONFIG_STATIC \
+| grep -v CONFIG_CROSS_COMPILER_PREFIX \
 | grep -v CONFIG_SELINUX \
 | grep -v CONFIG_EFENCE \
 | grep -v CONFIG_DMALLOC \
-| cat >.config.new
+\
+| grep -v CONFIG_RFKILL \
+>.config.new
 mv .config.new .config
-echo '# CONFIG_STATIC is not set' >>.config
-}
+echo '# CONFIG_DEBUG_PESSIMIZE is not set' >>.config
+echo '# CONFIG_WERROR is not set' >>.config
+echo "CONFIG_CROSS_COMPILER_PREFIX=\"${CROSS_COMPILER_PREFIX}\"" >>.config
 
-test "$libc" = uclibc && {
-cat .config \
-| grep -v ^CONFIG_SELINUX= \
-| grep -v ^CONFIG_EFENCE= \
-| grep -v ^CONFIG_DMALLOC= \
-| grep -v ^CONFIG_BUILD_LIBBUSYBOX= \
-| grep -v ^CONFIG_PAM= \
-| grep -v ^CONFIG_TASKSET= \
-| grep -v ^CONFIG_UNICODE_SUPPORT= \
-| grep -v ^CONFIG_PIE= \
-| grep -v CONFIG_STATIC \
-| grep -v CONFIG_CROSS_COMPILER_PREFIX \
-| cat >.config.new
-mv .config.new .config
-echo 'CONFIG_CROSS_COMPILER_PREFIX="'"$uclibc_cross"'"' >>.config
-echo 'CONFIG_STATIC=y' >>.config
-}
+# If glibc, don't build static
+if test x"$LIBC" = x"glibc"; then
+	cat .config \
+	| grep -v CONFIG_STATIC \
+	>.config.new
+	mv .config.new .config
+	echo '# CONFIG_STATIC is not set' >>.config
+fi
 
-# If STATIC, remove some things
+# If glibc, build static, and remove some things
+# likely to not work on uclibc.
+if test x"$LIBC" = x"uclibc"; then
+	cat .config \
+	| grep -v CONFIG_STATIC \
+	| grep -v CONFIG_BUILD_LIBBUSYBOX \
+	| grep -v CONFIG_TASKSET \
+	| grep -v CONFIG_UNICODE_SUPPORT \
+	| grep -v CONFIG_PIE \
+	>.config.new
+	mv .config.new .config
+	echo 'CONFIG_STATIC=y' >>.config
+fi
+
+# If STATIC, remove some things.
 # PAM with static linking is probably pointless
 # (but I need to try - now I don't have libpam.a on my system, only libpam.so)
-grep -q ^CONFIG_STATIC= .config && {
-cat .config \
-| grep -v ^CONFIG_PAM= \
-| cat >.config.new
-mv .config.new .config
-}
+if grep -q "^CONFIG_STATIC=y" .config; then
+	cat .config \
+	| grep -v CONFIG_PAM \
+	>.config.new
+	mv .config.new .config
+fi
 
 # Regenerate .config with default answers for yanked-off options
-{ yes "" | make oldconfig >/dev/null; } || exit 1
+# (most of default answers are "no").
+{ yes "" | make oldconfig >/dev/null; } || { echo "oldconfig error"; exit 1; }
 
-nice -n 10 make $MAKEOPTS 2>&1 | tee -a make.log
+# Build!
+nice -n 10 make $MAKEOPTS 2>&1 | tee make.log
 
-test -x busybox && {
-    cd ..
-    rm -rf "$dir"
-    exit 0
-}
-
-cd ..
-mv "$dir" "failed.$dir"
-exit 1
+# Return exitcode 1 if busybox executable does not exist
+test -x busybox