diff --git a/m4/lx_check_cbc.m4 b/m4/lx_check_cbc.m4
deleted file mode 100644
--- a/m4/lx_check_cbc.m4
+++ /dev/null
@@ -1,73 +0,0 @@
-AC_DEFUN([LX_CHECK_CBC],
-[
-  AC_ARG_WITH([cbc],
-AS_HELP_STRING([--with-cbc@<:@=PREFIX@:>@], [search for CBC under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@])
-AS_HELP_STRING([--without-cbc], [disable checking for CBC]),
-              [], [with_cbc=yes])
-
-  AC_ARG_WITH([cbc-includedir],
-AS_HELP_STRING([--with-cbc-includedir=DIR], [search for CBC headers in DIR]),
-              [], [with_cbc_includedir=no])
-
-  AC_ARG_WITH([cbc-libdir],
-AS_HELP_STRING([--with-cbc-libdir=DIR], [search for CBC libraries in DIR]),
-              [], [with_cbc_libdir=no])
-
-  lx_cbc_found=no
-  if test x"$with_cbc" != x"no"; then
-    AC_MSG_CHECKING([for CBC])
-
-    if test x"$with_cbc_includedir" != x"no"; then
-      CBC_CXXFLAGS="-I$with_cbc_includedir"
-    elif test x"$with_cbc" != x"yes"; then
-      CBC_CXXFLAGS="-I$with_cbc/include"
-    fi
-
-    if test x"$with_cbc_libdir" != x"no"; then
-      CBC_LDFLAGS="-L$with_cbc_libdir"
-    elif test x"$with_cbc" != x"yes"; then
-      CBC_LDFLAGS="-L$with_cbc/lib"
-    fi
-    CBC_LIBS="-lOsi -lCbc -lOsiCbc -lCbcSolver -lClp -lOsiClp -lCoinUtils -lVol -lOsiVol -lCgl -lm -llapack -lblas"
-
-    lx_save_cxxflags="$CXXFLAGS"
-    lx_save_ldflags="$LDFLAGS"
-    lx_save_libs="$LIBS"
-    CXXFLAGS="$CBC_CXXFLAGS"
-    LDFLAGS="$CBC_LDFLAGS"
-    LIBS="$CBC_LIBS"
-
-    lx_cbc_test_prog='
-      #include <coin/CbcModel.hpp>
-
-      int main(int argc, char** argv)
-      {
-        CbcModel cbc;
-        return 0;
-      }'
-
-    AC_LANG_PUSH(C++)
-    AC_LINK_IFELSE([$lx_cbc_test_prog], [lx_cbc_found=yes], [lx_cbc_found=no])
-    AC_LANG_POP(C++)
-
-    CXXFLAGS="$lx_save_cxxflags"
-    LDFLAGS="$lx_save_ldflags"
-    LIBS="$lx_save_libs"
-
-    if test x"$lx_cbc_found" = x"yes"; then
-      AC_DEFINE([HAVE_CBC], [1], [Define to 1 if you have CBC.])
-      lx_lp_found=yes
-      AC_DEFINE([HAVE_LP], [1], [Define to 1 if you have any LP solver.])
-      AC_MSG_RESULT([yes])
-    else
-      CBC_CXXFLAGS=""
-      CBC_LDFLAGS=""
-      CBC_LIBS=""
-      AC_MSG_RESULT([no])
-    fi
-  fi
-  CBC_LIBS="$CBC_LDFLAGS $CBC_LIBS"
-  AC_SUBST(CBC_CXXFLAGS)
-  AC_SUBST(CBC_LIBS)
-  AM_CONDITIONAL([HAVE_CBC], [test x"$lx_cbc_found" = x"yes"])
-])