Pre-setting XSLTPROC interferes with AC_CHECK_PROGS letting the user
override choice of program via the environment.
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=36156
AM_CONDITIONAL(DBUS_DOXYGEN_DOCS_ENABLED, test x$enable_doxygen_docs = xyes)
AC_MSG_RESULT($enable_doxygen_docs)
-XSLTPROC=false
AC_CHECK_PROGS([XSLTPROC], [xsltproc])
-AM_CONDITIONAL(DBUS_HAVE_XSLTPROC, test "$XSLTPROC" != false)
+AM_CONDITIONAL([DBUS_HAVE_XSLTPROC], [test "x$XSLTPROC" != "x"])
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