make_single_applets.sh: show errors and warnings

While at it, fix one warning in modprobe-small.c

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

2 files changed, 15 insertions, 2 deletions

diff --git a/make_single_applets.sh b/make_single_applets.sh
index 00f502eda..03a5c324f 100755
--- a/make_single_applets.sh
+++ b/make_single_applets.sh
@@ -28,6 +28,8 @@ for app in $apps; do
 done
 #echo "$allno" >.config_allno
 
+trap 'test -f .config.SV && mv .config.SV .config && touch .config' EXIT
+
 # Turn on each applet individually and build single-applet executable
 fail=0
 for app in $apps; do
@@ -54,16 +56,20 @@ for app in $apps; do
                 mv .config busybox_config_${app}
         elif ! make $makeopts >>busybox_make_${app}.log 2>&1; then
                 : $((fail++))
+                grep -i -e error: -e warning: busybox_make_${app}.log
                 echo "Build error for ${app}"
                 mv .config busybox_config_${app}
         elif ! grep -q '^#define NUM_APPLETS 1$' include/NUM_APPLETS.h; then
+                grep -i -e error: -e warning: busybox_make_${app}.log
                 mv busybox busybox_${app}
                 : $((fail++))
                 echo "NUM_APPLETS != 1 for ${app}: `cat include/NUM_APPLETS.h`"
                 mv .config busybox_config_${app}
         else
+                grep -i -e error: -e warning: busybox_make_${app}.log \
+                || rm busybox_make_${app}.log
                 mv busybox busybox_${app}
-                rm busybox_make_${app}.log
+                #mv .config busybox_config_${app}
         fi
         mv .config.SV .config
         #exit
diff --git a/modutils/modprobe-small.c b/modutils/modprobe-small.c
index 75b36f748..21fa9dbdd 100644
--- a/modutils/modprobe-small.c
+++ b/modutils/modprobe-small.c
@@ -59,7 +59,12 @@
 #define DEPFILE_BB CONFIG_DEFAULT_DEPMOD_FILE".bb"
 
 #define MOD_APPLET_CNT (ENABLE_MODPROBE + ENABLE_DEPMOD + ENABLE_INSMOD + ENABLE_LSMOD + ENABLE_RMMOD)
-#define ONLY_APPLET (MOD_APPLET_CNT <= 1)
+
+/* Do not bother if MODPROBE_SMALL=y but no applets selected. */
+/* The rest of the file is in this if block. */
+#if MOD_APPLET_CNT > 0
+
+#define ONLY_APPLET (MOD_APPLET_CNT == 1)
 #define is_modprobe (ENABLE_MODPROBE && (ONLY_APPLET || applet_name[0] == 'm'))
 #define is_depmod   (ENABLE_DEPMOD   && (ONLY_APPLET || applet_name[0] == 'd'))
 #define is_insmod   (ENABLE_INSMOD   && (ONLY_APPLET || applet_name[0] == 'i'))
@@ -1063,3 +1068,5 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
         return exitcode;
 #endif /* MODPROBE || INSMOD || RMMOD */
 }
+
+#endif /* MOD_APPLET_CNT > 0 */