diff -Naur 10.25-1/FreeFileSync/Source/Makefile 10.25-2/FreeFileSync/Source/Makefile
--- 10.25-1/FreeFileSync/Source/Makefile	2020-06-20 13:36:08.495867672 -0400
+++ 10.25-2/FreeFileSync/Source/Makefile	2020-06-20 13:31:36.180419862 -0400
@@ -1,4 +1,5 @@
 exeName = FreeFileSync
+CXX=g++-10
 
 cxxFlags += -std=c++2a -pipe -DWXINTL_NO_GETTEXT_MACRO -I../.. -I../../zenXml -include "zen/i18n.h" -include "zen/warn_static.h" \
            -Wall -Wfatal-errors -Wmissing-include-dirs -Wswitch-enum -Wcast-align -Wshadow -Wnon-virtual-dtor \
@@ -114,11 +115,11 @@
 
 ../Build/Bin/$(exeName): $(objFiles)
 	mkdir -p $(dir $@)
-	g++ -o $@ $^ $(linkFlags)
+	$(CXX) -o $@ $^ $(linkFlags)
 
 $(tmpPath)/ffs/src/%.o : %
 	mkdir -p $(dir $@)
-	g++ $(cxxFlags) -c $< -o $@
+	$(CXX) $(cxxFlags) -c $< -o $@
 
 clean:
 	rm -rf $(tmpPath)
diff -Naur 10.25-1/FreeFileSync/Source/RealTimeSync/Makefile 10.25-2/FreeFileSync/Source/RealTimeSync/Makefile
--- 10.25-1/FreeFileSync/Source/RealTimeSync/Makefile	2020-06-20 13:36:08.499867723 -0400
+++ 10.25-2/FreeFileSync/Source/RealTimeSync/Makefile	2020-06-20 13:31:48.844580205 -0400
@@ -1,4 +1,5 @@
 exeName = RealTimeSync
+CXX=g++-10
 
 cxxFlags += -std=c++2a -pipe -DWXINTL_NO_GETTEXT_MACRO -I../../.. -I../../../zenXml -include "zen/i18n.h" -include "zen/warn_static.h" \
            -Wall -Wfatal-errors -Wmissing-include-dirs -Wswitch-enum -Wcast-align -Wshadow -Wnon-virtual-dtor \
@@ -52,11 +53,11 @@
 
 ../../Build/Bin/$(exeName): $(objFiles)
 	mkdir -p $(dir $@)
-	g++ -o $@ $^ $(linkFlags)
+	$(CXX) -o $@ $^ $(linkFlags)
 
 $(tmpPath)/ffs/src/rts/%.o : %
 	mkdir -p $(dir $@)
-	g++ $(cxxFlags) -c $< -o $@
+	$(CXX) $(cxxFlags) -c $< -o $@
 
 clean:
 	rm -rf $(tmpPath)