krestenkrab
commented
13 years ago The "warn about unresolved" warnings are just that: a warning. A module contains an external reference to a BIF/function which does not exist in the target module; and it's not an issue until that BIF/function gets called.
So, consider it a hint that if you see a crash soon after this, consider if the given BIF/function needs to be implemented.
For instance, when you do "q()." you'll ge a warning that kernel:prep_stop is missing. But that's not a problem; ... rather an optional callback API for applications.
So ... until Erjang is a little more complete; I'd like to keep these warnings. But we could easily create an option to enable/disable them.
If you want to implement the BIF, it's quite easy. My guess is that for Erjang we can just always return false, ... and so this would be the implementation: (put this in src/main/java/erjang/m/code)
package erjang.m.code;
import erjang.*;
class Native extends erjang.ENative {
@BIF
public static EObject is_module_native(EObject module) {
return ERT.FALSE;
}
}
robertlj
After compiling Erlang version R14B and setting my environment variables to:
ERTS_VSN=5.8.1
ERL_ROOT=/home/robert/bob-apps/erlang-for-erjang-R14B/lib/erlang
When I run ./ej i receive the following:
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robertlj@rj:~/bob-repos/erjang_working$ ./ej Nov 10, 2010 10:45:53 AM erjang.EModuleManager$ModuleInfo warn_about_unresolved INFO: unresolved after load: code:is_module_native/1 Eshell V5.8.1 (abort with ^G) 1>
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System OS: Ubuntu 10.10 (Maverick Meerkat) Erlang: compiled from erlang.org source
Example of my "env_cfg"
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if [[ -z ${ERTS_VSN} ]]; then ERTS_VSN=5.8.1 fi if [[ -z ${ERL_ROOT} ]]; then ERL_ROOT=/home/robert/my-apps/erlang-for-erjang-R14B/lib/erlang fi
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