diff --git a/src/external/BMWtools/Makefile.am b/src/external/BMWtools/Makefile.am
index 185f9a21..91a1ee57 100644
--- a/src/external/BMWtools/Makefile.am
+++ b/src/external/BMWtools/Makefile.am
@@ -48,7 +48,7 @@ libBMWtools_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -release $(PLUG
 
 if IS_DARWIN
 install-exec-hook:
-	$(LN_S) $(libdir)/libBMWtools.dylib $(libdir)/libBMWtools.so
+	$(LN_S) -f $(libdir)/libBMWtools.dylib $(libdir)/libBMWtools.so
 uninstall-hook:
 	rm -f $(libdir)/libBMWtools.so
 endif
diff --git a/src/external/MagProximity/Makefile.am b/src/external/MagProximity/Makefile.am
index a2ac43b5..ce8d1489 100644
--- a/src/external/MagProximity/Makefile.am
+++ b/src/external/MagProximity/Makefile.am
@@ -51,7 +51,7 @@ libPMagProximityFitter_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -rel
 
 if IS_DARWIN
 install-exec-hook:
-	$(LN_S) $(libdir)/libPMagProximityFitter.dylib $(libdir)/libPMagProximityFitter.so
+	$(LN_S) -f $(libdir)/libPMagProximityFitter.dylib $(libdir)/libPMagProximityFitter.so
 uninstall-hook:
 	rm -f $(libdir)/libPMagProximityFitter.so
 endif
diff --git a/src/external/Nonlocal/Makefile.am b/src/external/Nonlocal/Makefile.am
index 6f3e38f7..ac74a6c3 100644
--- a/src/external/Nonlocal/Makefile.am
+++ b/src/external/Nonlocal/Makefile.am
@@ -51,7 +51,7 @@ libPNL_PippardFitter_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -relea
 
 if IS_DARWIN
 install-exec-hook:
-	$(LN_S) $(libdir)/libPNL_PippardFitter.dylib $(libdir)/libPNL_PippardFitter.so
+	$(LN_S) -f $(libdir)/libPNL_PippardFitter.dylib $(libdir)/libPNL_PippardFitter.so
 uninstall-hook:
 	rm -f $(libdir)/libPNL_PippardFitter.so
 endif
diff --git a/src/external/libCalcMeanFieldsLEM/Makefile.am b/src/external/libCalcMeanFieldsLEM/Makefile.am
index 8df35510..ce62f1c4 100644
--- a/src/external/libCalcMeanFieldsLEM/Makefile.am
+++ b/src/external/libCalcMeanFieldsLEM/Makefile.am
@@ -44,7 +44,7 @@ libCalcMeanFieldsLEM_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -relea
 
 if IS_DARWIN
 install-exec-hook:
-	$(LN_S) $(libdir)/libCalcMeanFieldsLEM.dylib $(libdir)/libCalcMeanFieldsLEM.so
+	$(LN_S) -f $(libdir)/libCalcMeanFieldsLEM.dylib $(libdir)/libCalcMeanFieldsLEM.so
 uninstall-hook:
 	rm -f $(libdir)/libCalcMeanFieldsLEM.so
 endif
diff --git a/src/external/libFitPofB/classes/Makefile.am b/src/external/libFitPofB/classes/Makefile.am
index 8b6dbdda..7f2d897e 100644
--- a/src/external/libFitPofB/classes/Makefile.am
+++ b/src/external/libFitPofB/classes/Makefile.am
@@ -62,7 +62,7 @@ libFitPofB_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -release $(PLUGI
 
 if IS_DARWIN
 install-exec-hook:
-	$(LN_S) $(libdir)/libFitPofB.dylib $(libdir)/libFitPofB.so
+	$(LN_S) -f $(libdir)/libFitPofB.dylib $(libdir)/libFitPofB.so
 uninstall-hook:
 	rm -f $(libdir)/libFitPofB.so
 endif
diff --git a/src/external/libGapIntegrals/Makefile.am b/src/external/libGapIntegrals/Makefile.am
index 3030b1eb..08d8d86b 100644
--- a/src/external/libGapIntegrals/Makefile.am
+++ b/src/external/libGapIntegrals/Makefile.am
@@ -44,7 +44,7 @@ libGapIntegrals_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -release $(
 
 if IS_DARWIN
 install-exec-hook:
-	$(LN_S) $(libdir)/libGapIntegrals.dylib $(libdir)/libGapIntegrals.so
+	$(LN_S) -f $(libdir)/libGapIntegrals.dylib $(libdir)/libGapIntegrals.so
 uninstall-hook:
 	rm -f $(libdir)/libGapIntegrals.so
 endif
diff --git a/src/external/libLFRelaxation/Makefile.am b/src/external/libLFRelaxation/Makefile.am
index e34991ca..4919809e 100644
--- a/src/external/libLFRelaxation/Makefile.am
+++ b/src/external/libLFRelaxation/Makefile.am
@@ -44,7 +44,7 @@ libLFRelaxation_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -release $(
 
 if IS_DARWIN
 install-exec-hook:
-	$(LN_S) $(libdir)/libLFRelaxation.dylib $(libdir)/libLFRelaxation.so
+	$(LN_S) -f $(libdir)/libLFRelaxation.dylib $(libdir)/libLFRelaxation.so
 uninstall-hook:
 	rm -f $(libdir)/libLFRelaxation.so
 endif
diff --git a/src/external/libZFRelaxation/Makefile.am b/src/external/libZFRelaxation/Makefile.am
index 6e6aa2b5..d0a51e71 100644
--- a/src/external/libZFRelaxation/Makefile.am
+++ b/src/external/libZFRelaxation/Makefile.am
@@ -44,7 +44,7 @@ libZFRelaxation_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -release $(
 
 if IS_DARWIN
 install-exec-hook:
-	$(LN_S) $(libdir)/libZFRelaxation.dylib $(libdir)/libZFRelaxation.so
+	$(LN_S) -f $(libdir)/libZFRelaxation.dylib $(libdir)/libZFRelaxation.so
 uninstall-hook:
 	rm -f $(libdir)/libZFRelaxation.so
 endif