Patch for "ax_swig_python.m4"

Da: Christian Ferrari <[email protected]>A: [email protected] <[email protected]>Cc: [email protected] <[email protected]>; [email protected] <[email protected]>Inviato: giovedì 18 ottobre 2018, 23:02:51 CESTOggetto: Patch for "ax_swig_python.m4"
 In the event that "swig" is not available, SWIG variable is blank, but the macro sets it to " -c++".Further checks on SWIG variable, like:    if test "z$SWIG" != "z"
are passed even if "swig" is not available.At some point a build procedure fails because it does not skip the part that requires "swig", and the command " -c++" is issued.
The macro can be fixed with a small patch: just change SWIG variable only if it's not blank.

tiian@ubuntu1404-64:~/lixa/m4include$ diff /home/tiian/autoconf-archive/m4/ax_swig_enable_cxx.m4 ax_swig_enable_cxx.m4 52c52,54
<         SWIG="$SWIG -c++"
---
>         if test "z$SWIG" != "z"; then
>                 SWIG="$SWIG -c++"
>         fi

Kind RegardsCh.F.

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Good design can't stop bad implementation