commit 35686a1af933545ca24219d46956fe5b5c7fe52d
Author: Daniel Swanson <popcorn.tomato.dude@gmail.com>
Date:   Mon Jun 14 13:47:51 2021 -0500

    helper functions are now in lttoolbox, so don't depend on apertium

diff --git a/configure.ac b/configure.ac
index ff39669..55e4db9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,11 +28,6 @@ PKG_CHECK_MODULES([LTTOOLBOX], [lttoolbox >= required_lttoolbox_version])
 AC_SUBST(LTTOOLBOX_CFLAGS)
 AC_SUBST(LTTOOLBOX_LIBS)
 
-PKG_CHECK_MODULES([APERTIUM], [apertium >= required_apertium_version])
-
-AC_SUBST(APERTIUM_CFLAGS)
-AC_SUBST(APERTIUM_LIBS)
-
 PKG_CHECK_MODULES([LIBXML], [libxml-2.0 >= required_libxml_version])
 
 AC_SUBST(LIBXML_CFLAGS)
@@ -48,8 +43,8 @@ AC_CHECK_LIB(xml2, xmlReaderForFile)
 
 AC_CHECK_HEADER([utf8.h], [], [AC_MSG_ERROR([You don't have utfcpp installed.])])
 
-CPPFLAGS="$CPPFLAGS $CFLAGS $LTTOOLBOX_CFLAGS $APERTIUM_CFLAGS $LIBXML_CFLAGS $ICU_CFLAGS"
-LIBS="$LIBS $LTTOOLBOX_LIBS $APERTIUM_LIBS $LIBXML_LIBS $ICU_LIBS"
+CPPFLAGS="$CPPFLAGS $CFLAGS $LTTOOLBOX_CFLAGS $LIBXML_CFLAGS $ICU_CFLAGS"
+LIBS="$LIBS $LTTOOLBOX_LIBS $LIBXML_LIBS $ICU_LIBS"
 
 # Checks for highest supported C++ standard
 AC_LANG(C++)
diff --git a/src/lsx_compiler.cc b/src/lsx_compiler.cc
index b13d0ca..bcdeac1 100644
--- a/src/lsx_compiler.cc
+++ b/src/lsx_compiler.cc
@@ -19,7 +19,7 @@
 #include <lttoolbox/entry_token.h>
 #include <lttoolbox/lt_locale.h>
 #include <lttoolbox/xml_parse_util.h>
-#include <apertium/string_utils.h>
+#include <lttoolbox/string_utils.h>
 
 #include <cstdlib>
 #include <iostream>