fix breakage found by mass one-applet builds

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

archival/bbunzip.c

@@ -9,8 +9,12 @@
 
 /* lzop_main() uses bbunpack(), need this: */
 //kbuild:lib-$(CONFIG_LZOP) += bbunzip.o
+//kbuild:lib-$(CONFIG_LZOPCAT) += bbunzip.o
+//kbuild:lib-$(CONFIG_UNLZOP) += bbunzip.o
 /* bzip2_main() too: */
 //kbuild:lib-$(CONFIG_BZIP2) += bbunzip.o
+/* gzip_main() too: */
+//kbuild:lib-$(CONFIG_GZIP) += bbunzip.o
 
 /* Note: must be kept in sync with archival/lzop.c */
 enum {

libbb/Kbuild.src

@@ -176,6 +176,7 @@ lib-$(CONFIG_TRACEROUTE6) += inet_cksum.o
 lib-$(CONFIG_UDHCPC) += inet_cksum.o
 lib-$(CONFIG_UDHCPC6) += inet_cksum.o
 lib-$(CONFIG_UDHCPD) += inet_cksum.o
+lib-$(CONFIG_DHCPRELAY) += inet_cksum.o
 
 # We shouldn't build xregcomp.c if we don't need it - this ensures we don't
 # require regex.h to be in the include dir even if we don't need it thereby

libbb/appletlib.c

@@ -329,21 +329,6 @@ static struct suid_config_t {
 
 static bool suid_cfg_readable;
 
-/* check if u is member of group g */
-static int ingroup(uid_t u, gid_t g)
-{
-	struct group *grp = getgrgid(g);
-	if (grp) {
-		char **mem;
-		for (mem = grp->gr_mem; *mem; mem++) {
-			struct passwd *pwd = getpwnam(*mem);
-			if (pwd && (pwd->pw_uid == u))
-				return 1;
-		}
-	}
-	return 0;
-}
-
 /* libbb candidate */
 static char *get_trimmed_slice(char *s, char *e)
 {
@@ -568,7 +553,22 @@ static inline void parse_config_file(void)
 # endif /* FEATURE_SUID_CONFIG */
 
 
-# if ENABLE_FEATURE_SUID
+# if ENABLE_FEATURE_SUID && NUM_APPLETS > 0
+/* check if u is member of group g */
+static int ingroup(uid_t u, gid_t g)
+{
+	struct group *grp = getgrgid(g);
+	if (grp) {
+		char **mem;
+		for (mem = grp->gr_mem; *mem; mem++) {
+			struct passwd *pwd = getpwnam(*mem);
+			if (pwd && (pwd->pw_uid == u))
+				return 1;
+		}
+	}
+	return 0;
+}
+
 static void check_suid(int applet_no)
 {
 	gid_t rgid;  /* real gid */

libbb/update_passwd.c

@@ -180,6 +180,7 @@ int FAST_FUNC update_passwd(const char *filename,
 		if (!line) /* EOF/error */
 			break;
 
+#if ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP
 		if (!name && member) {
 			/* Delete member from all groups */
 			/* line is "GROUP:PASSWD:[member1[,member2]...]" */
@@ -209,6 +210,7 @@ int FAST_FUNC update_passwd(const char *filename,
 			fprintf(new_fp, "%s\n", line);
 			goto next;
 		}
+#endif
 
 		cp = is_prefixed_with(line, name_colon);
 		if (!cp) {

networking/libiproute/Kbuild.src

@@ -62,13 +62,16 @@ lib-$(CONFIG_FEATURE_IP_TUNNEL) += \
 lib-$(CONFIG_FEATURE_IP_RULE) += \
 	ip_parse_common_args.o \
 	iprule.o \
+	libnetlink.o \
 	rt_names.o \
+	rtm_map.o \
 	utils.o
 
 lib-$(CONFIG_FEATURE_IP_NEIGH) += \
 	ip_parse_common_args.o \
 	ipneigh.o \
 	libnetlink.o \
+	ll_addr.o \
 	ll_map.o \
 	rt_names.o \
 	utils.o

networking/udhcp/Config.src

@@ -16,7 +16,6 @@ config UDHCPD
 config DHCPRELAY
 	bool "dhcprelay"
 	default y
-	depends on UDHCPD
 	help
 	  dhcprelay listens for dhcp requests on one or more interfaces
 	  and forwards these requests to a different interface or dhcp
@@ -25,7 +24,6 @@ config DHCPRELAY
 config DUMPLEASES
 	bool "Lease display utility (dumpleases)"
 	default y
-	depends on UDHCPD
 	help
 	  dumpleases displays the leases written out by the udhcpd server.
 	  Lease times are stored in the file by time remaining in lease, or

networking/udhcp/Kbuild.src

@@ -15,7 +15,7 @@ lib-$(CONFIG_UDHCPD)     += common.o packet.o signalpipe.o socket.o
 lib-$(CONFIG_UDHCPC)     += dhcpc.o
 lib-$(CONFIG_UDHCPD)     += dhcpd.o arpping.o
 lib-$(CONFIG_DUMPLEASES) += dumpleases.o
-lib-$(CONFIG_DHCPRELAY)  += dhcprelay.o
+lib-$(CONFIG_DHCPRELAY)  += dhcprelay.o common.o socket.o packet.o
 
 lib-$(CONFIG_FEATURE_UDHCPC_ARPING) += arpping.o
 lib-$(CONFIG_FEATURE_UDHCP_RFC3397) += domain_codec.o

sysklogd/logread.c

@@ -11,7 +11,8 @@
 //config:config LOGREAD
 //config:	bool "logread"
 //config:	default y
-//config:	depends on FEATURE_IPC_SYSLOG
+//WRONG: it should be compilable without SYSLOG=y:
+//WRONG:	depends on FEATURE_IPC_SYSLOG
 //config:	help
 //config:	  If you enabled Circular Buffer support, you almost
 //config:	  certainly want to enable this feature as well. This