Enable dynamic build dates, plus print SDK version.

.travis.yml

@@ -3,15 +3,16 @@ before_install:
 - sudo apt-get install -y python-serial srecord
 install:
 - tar -zxvf tools/esp-open-sdk.tar.gz
-- export PATH=$PATH:$PWD/esp-open-sdk/sdk:$PWD/esp-open-sdk/xtensa-lx106-elf/bin
+- export PATH=$PATH:$PWD/esp-open-sdk/xtensa-lx106-elf/bin
 script:
-- make all
+- export BUILD_DATE=$(date +%Y%m%d)
+- make EXTRA_CCFLAGS="-DBUILD_DATE='\"'$BUILD_DATE'\"'" all
 - cd bin/
 - file_name_float="nodemcu_float_${TRAVIS_TAG}.bin"
 - srec_cat -output ${file_name_float} -binary 0x00000.bin -binary -fill 0xff 0x00000 0x10000 0x10000.bin -binary -offset 0x10000
 - cd ../
 - make clean
-- make EXTRA_CCFLAGS="-DLUA_NUMBER_INTEGRAL"
+- make EXTRA_CCFLAGS="-DLUA_NUMBER_INTEGRAL -DBUILD_DATE='\"'$BUILD_DATE'\"'"
 - cd bin/
 - file_name_integer="nodemcu_integer_${TRAVIS_TAG}.bin"
 - srec_cat -output ${file_name_integer} -binary 0x00000.bin -binary -fill 0xff 0x00000 0x10000 0x10000.bin -binary -offset 0x10000

app/include/user_version.h

@@ -7,6 +7,10 @@
 #define NODE_VERSION_INTERNAL   0U
 
 #define NODE_VERSION	"NodeMCU 1.4.0"
-#define BUILD_DATE	    "build 20151006"
+#ifndef BUILD_DATE
+#define BUILD_DATE	  "20151006"
+#endif
+
+extern char SDK_VERSION[];
 
 #endif	/* __USER_VERSION_H__ */

app/lua/lua.c

@@ -135,9 +135,13 @@ static int docall (lua_State *L, int narg, int clear) {
 }
 
 
-static void print_version (void) {
-  // l_message(NULL, LUA_RELEASE "  " LUA_COPYRIGHT);
-  l_message(NULL, "\n" NODE_VERSION " " BUILD_DATE "  powered by " LUA_RELEASE);
+static void print_version (lua_State *L) {
+  lua_pushliteral (L, "\n" NODE_VERSION " build " BUILD_DATE " powered by " LUA_RELEASE " on SDK ");
+  lua_pushstring (L, SDK_VERSION);
+  lua_concat (L, 2);
+  const char *msg = lua_tostring (L, -1);
+  l_message (NULL, msg);
+  lua_pop (L, 1);
 }
 
 
@@ -399,7 +403,7 @@ static int pmain (lua_State *L) {
   lua_gc(L, LUA_GCSTOP, 0);  /* stop collector during initialization */
   luaL_openlibs(L);  /* open libraries */
   lua_gc(L, LUA_GCRESTART, 0);
-  print_version();
+  print_version(L);
   s->status = handle_luainit(L);
 #if 0
   if (s->status != 0) return 0;