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Add options to control libxml2, jansson, and libyaml automagic deps.
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--- ctags-20161028/configure.ac
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+++ ctags-20161028/configure.ac
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@@ -585,30 +585,48 @@
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AC_CHECK_FUNCS(fork waitpid execv pipe,[enable_xcmd=yes],[enable_xcmd=no])
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AM_CONDITIONAL([ENABLE_XCMD], [test "xyes" = "x$enable_xcmd"])
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+AC_ARG_ENABLE([xml],
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+ [AS_HELP_STRING([--enable-xml],
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+ [enable xml support [no]])])
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+
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AH_TEMPLATE([HAVE_LIBXML],
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[Define this value if libxml is available.])
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dnl About the condition of version
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dnl see https://mail.gnome.org/archives/xml/2010-February/msg00008.html
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-PKG_CHECK_MODULES(LIBXML, [libxml-2.0 >= 2.7.7],
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- [have_libxml=yes
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- AC_DEFINE(HAVE_LIBXML)],
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- [have_libxml=no])
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+AS_IF([test "${enable_xml}" = "yes"], [
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+ PKG_CHECK_MODULES(LIBXML, [libxml-2.0 >= 2.7.7],
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+ [have_libxml=yes
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+ AC_DEFINE(HAVE_LIBXML)],
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+ [AC_MSG_ERROR([libxml2 not found])])
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+])
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AM_CONDITIONAL(HAVE_LIBXML, test "x$have_libxml" = xyes)
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+AC_ARG_ENABLE([json],
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+ [AS_HELP_STRING([--enable-json],
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+ [enable json support [no]])])
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+
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AH_TEMPLATE([HAVE_JANSSON],
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[Define this value if jansson is available.])
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-PKG_CHECK_MODULES(JANSSON, jansson,
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- [have_jansson=yes
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- AC_DEFINE(HAVE_JANSSON)],
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- [have_jansson=no])
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+AS_IF([test "${enable_json}" = "yes"], [
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+ PKG_CHECK_MODULES(JANSSON, jansson,
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+ [have_jansson=yes
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+ AC_DEFINE(HAVE_JANSSON)],
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+ [AC_MSG_ERROR([jansson not found])])
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+])
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AM_CONDITIONAL(HAVE_JANSSON, test "x$have_jansson" = xyes)
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+AC_ARG_ENABLE([yaml],
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+ [AS_HELP_STRING([--enable-yaml],
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+ [enable yaml support [no]])])
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+
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AH_TEMPLATE([HAVE_LIBYAML],
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[Define this value if libyaml is available.])
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-PKG_CHECK_MODULES(LIBYAML, yaml-0.1,
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- [have_libyaml=yes
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- AC_DEFINE(HAVE_LIBYAML)],
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- [have_libyaml=no])
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+AS_IF([test "${enable_yaml}" = "yes"], [
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+ PKG_CHECK_MODULES(LIBYAML, yaml-0.1,
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+ [have_libyaml=yes
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+ AC_DEFINE(HAVE_LIBYAML)],
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+ [AC_MSG_ERROR([libyaml not found])])
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+])
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AM_CONDITIONAL(HAVE_LIBYAML, test "x$have_libyaml" = xyes)
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