Differences

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--- doc:dev_blockly [2014/11/01 18:59] – admin
+++ doc:dev_blockly [2015/01/03 18:30] – admin
@@ Line 2: / Line 2: @@
-This is more a maintaince handbook for the OOBD team themself as anything the normal developer need to be worried about, so just forget this page
+This is more a installation scrapbook from the OOBD team themself as anything the normal developer need to be worried about, so just forget this page :-)
-Download the [[http://kripken.github.io/emscripten-site/docs/getting_started/downloads.html#sdk-downloads|emscripten- Package]] and install in ~/bin by following the instructions. Make sure to install the other listed programs (cmake,nodejs,..)  first (clang and llvm is not listed as needed,please install this too)
-Install your own llvm version, as the original ubuntu version is not build with javascript support
+===== Install emscripten =====
+The package under Ubuntu 14.04 is too old (1.10), but we'll need 1.12.1 to have the fastcomp compiler active. The older version generates a 'undefined setjmp()' error
-svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm , following http://llvm.org/docs/GettingStarted.html#setting-up-your-environment
+So download the [[http://kripken.github.io/emscripten-site/docs/building_from_source/building_emscripten_from_source_using_the_sdk.html#building-emscripten-from-source-using-the-sdk|actual SDK]] and build it locally.
+===== Compile Luac as javascript binary =====
+Download the actual lua archive (http://www.lua.org/ftp/). Keep in mind that OOBD (actual) still uses the older lua 5.1 system. Unpack the archive and do some modifications in the make files:
+in main Makefile, add a new target (emcc):
+  # Convenience platforms targets.
+  PLATS= aix ansi bsd freebsd generic linux macosx mingw posix solaris emcc
+In scr/Makefile
+replace the gcc compiler against emcc
+  CC= emcc
+make a note of the compiler flags, which are used (e.g. ''-O2 -Wall''), as they are used again later.
+Make sure **not** to use the -DLUA_USE_POSIX directive, because it makes the compiler to use  _setjmp/_longjmp instead a "normal" setjmp/longjmp, which fails later when you run the .js result....
+comment the LIBS directive, as it seems not to be used and creates a warning
+  # LIBS= -lm $(MYLIBS)
+creates a new target with only luac, but without lua itself
+  ALL_C= $(LUA_A) $(LUAC_T)
+  comp:   $(ALL_C)
+Add the new defined target as emcc build target
+  emcc:
+        $(MAKE) comp MYCFLAGS=
+Start the build process
+  emmake make emcc
+change into the source dir
+  cd src/
+build luac.js
+  emcc -O2 -Wall  -o luac.js  luac.o print.o liblua.a
+test it
+  nodejs luac.js
+build html wrapper
+  emcc -o luac.html  luac.o print.o liblua.a
+and load it via local webserver (''php -S localhost:8000'') into browser for testing