adapt to new optional build strategy

app/Makefile

@@ -21,7 +21,7 @@ ifndef PDIR # {
 GEN_IMAGES= eagle.app.v6.out
 GEN_BINS= eagle.app.v6.bin
 OPT_MKTARGETS        := coap crypto dht http mqtt pcm sjson sqlite3 tsl2561 websocket
-OPT_MKLIBTARGETS     := u8g ucg
+OPT_MKLIBTARGETS     := u8g2 ucg
 SEL_MKTARGETS        := $(shell $(CC) -E -dM include/user_modules.h | sed -n '/^\#define LUA_USE_MODULES_/{s/.\{24\}\(.*\)/\L\1/; p}')
 OPT_SEL_MKLIBTARGETS := $(foreach tgt,$(OPT_MKLIBTARGETS),$(findstring $(tgt), $(SEL_MKTARGETS)))
 OPT_SEL_MKTARGETS    := $(foreach tgt,$(OPT_MKTARGETS),$(findstring $(tgt), $(SEL_MKTARGETS))) \
@@ -38,7 +38,6 @@ SUBDIRS= 					\
 	lua 					\
 	lwip 					\
 	task 					\
-	u8g2lib					\
 	smart 					\
 	modules 				\
 	spiffs 					\
@@ -69,7 +68,6 @@ COMPONENTS_eagle.app.v6 = 			\
 	libc/liblibc.a 				\
 	lua/liblua.a 				\
 	lwip/liblwip.a 				\
-	u8g2lib/u8g2lib.a			\
 	smart/smart.a 				\
 	spiffs/spiffs.a 			\
 	fatfs/libfatfs.a			\

app/u8g2lib/Makefile

@@ -12,7 +12,7 @@
 #     a generated lib/image xxx.a ()
 #
 ifndef PDIR
-GEN_LIBS = u8g2lib.a
+GEN_LIBS = libu8g2lib.a
 endif
 
 STD_CFLAGS=-std=gnu11 -Wimplicit