configure: improve interpreter detection #5122
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Currently, when configure is called with
--with-java
or--with-java=
, auto-detection is performed. When called with--without-java
,HAVE_JAVA
is still being defined. This is unfortunate when cross-compiling for embedded systems, we would end up with Java on the host being auto-detected (which is not what we have on the target), or with a wrongHAVE_JAVA
define.This implements a way to explicitely disable scripting support for all supported languages with ``without-java` (or the respective options for Perl, PHP and Python)
While we're at it, make the detection a bit more verbose, and do some cleanup.