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[PATCH] AC_LANG for Java


From: Mike Duigou
Subject: [PATCH] AC_LANG for Java
Date: Thu, 17 Jul 2014 21:19:50 -0700

Hello all;

I've prepared a prospective patch for supporting Java with AC_LANG. I've 
modelled the patch on what I found in the Go and Erlang AC_LANG 
implementations. (BTW, the Go support needs updating. There are problems in the 
_AC_LANG_IO_PROGRAM due to symbol name changes).

The key things provided by java.m4 are:

AC_PROG_JAVA
AC_PROG_JAVAC
AC_LANG_COMPILER(Java)
AC_LANG_PROGRAM(Java)
AC_LANG_CALL(Java)
AC_LANG_FUNC_LINK_TRY(Java)
AC_LANG_BOOL_COMPILE_TRY(Java)
AC_LANG_INT_SAVE(java)
AC_LANG_PREPROC(Java)  # Throws an error


Internally 
_AC_LANG_IO_PROGRAM(Java)

There are probably many things wrong with my implementation at this point but 
the basic behaviour works the way a user would expect. The sparsely commented 
existing examples and limited documentation resulted in many bits of guesswork 
on my part. I'd be happy to take feedback on this patch or hand it off for 
sanitization by someone more familiar with autoconf scripting and AC_LANG 
implementations in particular. 

The necessary copyright assignment and contribution paperwork for this patch 
has been completed and verified.

Cheers,

Mike


Attachment: java.m4
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