--- boost_1_73_0/tools/build/src/tools/gcc.jam~	2020-03-31 21:50:30.687635266 +0100
+++ boost_1_73_0/tools/build/src/tools/gcc.jam	2020-03-31 21:50:32.943632779 +0100
@@ -571,7 +571,7 @@
 
 actions compile.c++ bind PCH_FILE
 {
-    "$(CONFIG_COMMAND)" $(LANG) -ftemplate-depth-$(TEMPLATE_DEPTH) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(PCH_FILE:D)" -I"$(INCLUDES)" -c -o "$(<:W)" "$(>:W)"
+    "$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(PCH_FILE:D)" -I"$(INCLUDES)" -c -o "$(<:W)" "$(>:W)"
 }
 
 actions compile.c bind PCH_FILE
@@ -581,7 +581,7 @@
 
 actions compile.c++.preprocess bind PCH_FILE
 {
-    "$(CONFIG_COMMAND)" $(LANG) -ftemplate-depth-$(TEMPLATE_DEPTH) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(PCH_FILE:D)" -I"$(INCLUDES)" "$(>:W)" -E >"$(<:W)"
+    "$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(PCH_FILE:D)" -I"$(INCLUDES)" "$(>:W)" -E >"$(<:W)"
 }
 
 actions compile.c.preprocess bind PCH_FILE
@@ -704,20 +704,20 @@
 ###
 
 # Declare flags and action for compilation.
-toolset.flags gcc.compile OPTIONS <optimization>off   : -O0 ;
-toolset.flags gcc.compile OPTIONS <optimization>speed : -O3 ;
-toolset.flags gcc.compile OPTIONS <optimization>space : -Os ;
-
-toolset.flags gcc.compile OPTIONS <inlining>off  : -fno-inline ;
-toolset.flags gcc.compile OPTIONS <inlining>on   : -Wno-inline ;
-toolset.flags gcc.compile OPTIONS <inlining>full : -finline-functions -Wno-inline ;
-
-toolset.flags gcc.compile OPTIONS <warnings>off : -w ;
-toolset.flags gcc.compile OPTIONS <warnings>on  : -Wall ;
-toolset.flags gcc.compile OPTIONS <warnings>all : -Wall ;
-toolset.flags gcc.compile OPTIONS <warnings>extra : -Wall -Wextra ;
-toolset.flags gcc.compile OPTIONS <warnings>pedantic : -Wall -Wextra -pedantic ;
-toolset.flags gcc.compile OPTIONS <warnings-as-errors>on : -Werror ;
+toolset.flags gcc.compile OPTIONS <optimization>off   :  ;
+toolset.flags gcc.compile OPTIONS <optimization>speed :  ;
+toolset.flags gcc.compile OPTIONS <optimization>space :  ;
+
+toolset.flags gcc.compile OPTIONS <inlining>off  :  ;
+toolset.flags gcc.compile OPTIONS <inlining>on   :  ;
+toolset.flags gcc.compile OPTIONS <inlining>full :  ;
+
+toolset.flags gcc.compile OPTIONS <warnings>off :  ;
+toolset.flags gcc.compile OPTIONS <warnings>on  :  ;
+toolset.flags gcc.compile OPTIONS <warnings>all :  ;
+toolset.flags gcc.compile OPTIONS <warnings>extra : ;
+toolset.flags gcc.compile OPTIONS <warnings>pedantic : ;
+toolset.flags gcc.compile OPTIONS <warnings-as-errors>on : ;
 
 toolset.flags gcc.compile OPTIONS <debug-symbols>on : -g ;
 toolset.flags gcc.compile OPTIONS <profiling>on : -pg ;