diff -ur /Users/dan/src/M2/M2/M2/BUILD/dan/builds.tmp/einsteinium-master/libraries/normaliz/tmp/normaliz-3.6.3/configure.ac normaliz-3.6.3/configure.ac
--- /Users/dan/src/M2/M2/M2/BUILD/dan/builds.tmp/einsteinium-master/libraries/normaliz/tmp/normaliz-3.6.3/configure.ac	2018-08-21 15:15:23.000000000 +0200
+++ normaliz-3.6.3/configure.ac	2018-11-01 08:54:39.000000000 +0100
@@ -217,7 +217,7 @@
     [:],
     [enable_flint=check])
 AS_IF([test "x$enable_flint" != xno],
-    [FLINT_LIBS="-lflint -lmpfr"
+    [FLINT_LIBS="-lflint -lmpfr -lgc"
      LIBS_SAVED="$LIBS"
      LIBS="$LIBS $FLINT_LIBS"
      AC_CHECK_LIB(flint,dummy_fn_to_prevent_ISOC_warning,[have_flint=yes],[have_flint=no])
@@ -250,7 +250,7 @@
     [enable_enfnormaliz=check])
 AS_IF([test "x$enable_enfnormaliz" != xno],
     [AC_MSG_CHECKING([whether e-antic headers and library are available])
-     E_ANTIC_LIBS="-lnfemb -larb -lantic -lflint -lgmpxx -lgmp"
+     E_ANTIC_LIBS="-lnfemb -larb -lantic -lflint -lgmpxx -lgmp -lgc"
      LIBS_SAVED="$LIBS"
      LIBS="$LIBS $E_ANTIC_LIBS"
      AC_LINK_IFELSE(
