[patch #7862] ax_pkg_swig.m4, add SWIG_FLAGS

[Václav Zeman]

Follow-up Comment #2, patch #7862 (project autoconf-archive):

I use it to pass -DUNICODE flag to swig but I expand it in Makefile instead of
directly into $SWIG. E.g., like this:

$ ../configure --with-python CXXFLAGS="-DUNICODE" SWIG_FLAGS="-DUNICODE"

And then in Makefile.am:

$(SWIG) $(SWIG_FLAGS) -c++ -python...

I guess that for $SWIG_FLAGS to be more useful, the variable would would have
to be expanded into $SWIG variable. Would you accept such patch for the
macro?


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