commit 22500e5de491aad87f9de35d45a89f704549b4d2
Author: Daniel Swanson <popcorn.tomato.dude@gmail.com>
Date:   Tue Aug 3 15:56:35 2021 -0500

    don't need to mess with configure

diff --git a/configure.ac b/configure.ac
index fb853b0..b6b36b2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -40,8 +40,6 @@ AC_SUBST(ICU_LIBS)
 # Checks for libraries.
 AC_CHECK_LIB(xml2, xmlReaderForFile)
 
-AC_CHECK_HEADERS([string_view])
-
 AC_CHECK_HEADER([utf8.h], [], [AC_MSG_ERROR([You don't have utfcpp installed.])])
 
 CPPFLAGS="$CPPFLAGS $CFLAGS $LTTOOLBOX_CFLAGS $LIBXML_CFLAGS $ICU_CFLAGS"