From 91ea80360a19ee6f736c3100d97b1bb1311bf6ce Mon Sep 17 00:00:00 2001
From: Jing Liu <jintonic@physino.xyz>
Date: Tue, 12 Dec 2023 07:38:03 -0600
Subject: [PATCH] embeded G4 lib path in rpath in Makefile

---
 Makefile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Makefile b/Makefile
index b40b45f..b0684b0 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,12 @@ LDLIBS=$(shell geant4-config --libs)
 ifeq (11.1.0, $(shell geant4-config --version))
   LDLIBS+=-lG4ToolsSG
 endif
+# imbed Geant4 lib path to rpath on MacOS
+# https://stackoverflow.com/a/12099167/1801749
+# https://stackoverflow.com/a/6638539/1801749
+ifeq (Darwin, $(shell uname -s))
+  LDLIBS+="-Wl,-rpath,$(shell geant4-config --prefix)/lib"
+endif
 
 # In case that Xerces-c and HDF5 libs are in LD_LIBRARY_PATH
 # add them in the LDLIBS flag. (Fixme: macOS doesn't use LD_LIBRARY_PATH)