mkvtoolnix/ac/boost.m4

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# boost's headers must be present.
AX_BOOST_BASE([1.34.0])
# boost::system can be absend for older versions. However, the test
# for boost::filesystem might fail if boost::system is not available
# with newer versions.
AX_BOOST_SYSTEM()
# boost::filesystem must be present.
AX_BOOST_FILESYSTEM()
if test x"$ax_cv_boost_filesystem" != "xyes"; then
AC_MSG_ERROR(The Boost Filesystem library was not found.)
fi
# boost::regex must be present.
AX_BOOST_REGEX()
if test x"$ax_cv_boost_regex" != "xyes"; then
AC_MSG_ERROR(The Boost regex library was not found.)
fi
# boost::foreach can be missing; the included version will be used in
# that case.
boost_foreach_dir=lib/boost/foreach
AX_BOOST_FOREACH($boost_foreach_dir)
if test x"$ax_cv_boost_foreach" = "xno"; then
AC_MSG_ERROR([The Boost foreach library was not found, and the included version does not work. Install Boost v1.34.0 or later.])
fi
if test x"$ax_cv_boost_foreach" = "xincluded"; then
EXTRA_CFLAGS="$EXTRA_CFLAGS -I$boost_foreach_dir"
fi