How do you print to the console/log from native code on OSX ?

Question

Hi,

I have written some native code unity plugins and need to print debugging info to the console/logs.

On android, for debug logging I used:

 #define DEBUG_LOG_FMT(fmt, ...)    \
     do { \
     static char buf[4096]; \
     sprintf(buf, fmt, ##__VA_ARGS__); \
 __android_log_print(ANDROID_LOG_INFO, LOG_TAG, "%s(%d): %s\n", __FILE__, __LINE__, buf);  \
     } while (0)

and my debug info showed up in the unity logs.

Now I am testing my plugin for OSX and for debug logging I am using:

 #define DEBUG_LOG_FMT(fmt, ...)    \
     do { \
     static char buf[4096]; \
     sprintf(buf, fmt, ##__VA_ARGS__); \
     std::string str("%s(%d): %s\n"); \
     printf(str.c_str(), __FILE__, __LINE__, buf);  \
     } while (0)

but my debug info does not show up in the unity logs / console.

How do you print to the unity console from native code on OSX and get it to show up in the logs ?

Answer 1

Best Answer

Answer by TreasureKey · Nov 22, 2013 at 07:06 AM

The best answer I was able to find involved writing a callback on the Unity script side and a function pointer on the plugin/native code side. This enables your plugin to call a unity script function like Debug.Log.

An example of it can be found here:

http://hojjatjafary.blogspot.ca/2013/01/c-plugin-debug-log.html

Oh and I ended up changing my native code debug logging macro to:

 #define DEBUG_LOG_FMT(fmt, ...)    \
     do { \
     static char buf[4096]; \
     sprintf(buf, fmt, ##__VA_ARGS__); \
     DebugLog(buf); \
     } while (0)

Now I can log once again!

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Hola Soy Edu Feliz Navidad · Nov 18, 2014 at 04:45 PM 0

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I cant upvote this tag because I don't have enough score, but I have to confess that this link is very useful.

How do you print to the console/log from native code on OSX ?

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