1 files changed, 6 insertions, 0 deletions
diff --git a/src/units.cpp b/src/units.cpp
index 34a71db1..36f2d4c7 100644
--- a/src/units.cpp
+++ b/src/units.cpp
@@ -36,6 +36,12 @@ pj_units[] = {
     {nullptr,      nullptr,                   nullptr,                           0.0}
 };
 
+// For internal use
+const PJ_UNITS *pj_list_linear_units()
+{
+    return pj_units;
+}
+
 const PJ_UNITS *proj_list_units()
 {
     return pj_units;