4 files changed, 8 insertions, 4 deletions
diff --git a/os/ports/GCC/ARM/rules.mk b/os/ports/GCC/ARM/rules.mk
index 18503fed4..94840e7f3 100644
--- a/os/ports/GCC/ARM/rules.mk
+++ b/os/ports/GCC/ARM/rules.mk
@@ -12,6 +12,7 @@ OUTFILES = $(BUILDDIR)/$(PROJECT).elf $(BUILDDIR)/$(PROJECT).hex \
 
 # Automatic compiler options
 OPT = $(USE_OPT)
+COPT = $(USE_COPT)
 CPPOPT = $(USE_CPPOPT)
 ifeq ($(USE_LINK_GC),yes)
   OPT += -ffunction-sections -fdata-sections
@@ -56,7 +57,7 @@ LIBS      = $(DLIBS) $(ULIBS)
 MCFLAGS   = -mcpu=$(MCU)
 ODFLAGS	  = -x --syms
 ASFLAGS   = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.s=.lst)) $(ADEFS)
-CFLAGS    = $(MCFLAGS) $(OPT) $(CWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
+CFLAGS    = $(MCFLAGS) $(OPT) $(COPT) $(CWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
 CPPFLAGS  = $(MCFLAGS) $(OPT) $(CPPOPT) $(CPPWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.cpp=.lst)) $(DEFS)
 ifeq ($(USE_LINK_GC),yes)
   LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--gc-sections $(LLIBDIR)
diff --git a/os/ports/GCC/ARMCMx/rules.mk b/os/ports/GCC/ARMCMx/rules.mk
index e40892fa9..cda8ceda2 100644
--- a/os/ports/GCC/ARMCMx/rules.mk
+++ b/os/ports/GCC/ARMCMx/rules.mk
@@ -12,6 +12,7 @@ OUTFILES = $(BUILDDIR)/$(PROJECT).elf $(BUILDDIR)/$(PROJECT).hex \
 
 # Automatic compiler options
 OPT = $(USE_OPT)
+COPT = $(USE_COPT)
 CPPOPT = $(USE_CPPOPT)
 ifeq ($(USE_LINK_GC),yes)
   OPT += -ffunction-sections -fdata-sections
@@ -56,7 +57,7 @@ LIBS      = $(DLIBS) $(ULIBS)
 MCFLAGS   = -mcpu=$(MCU)
 ODFLAGS	  = -x --syms
 ASFLAGS   = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.s=.lst)) $(ADEFS)
-CFLAGS    = $(MCFLAGS) $(OPT) $(CWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
+CFLAGS    = $(MCFLAGS) $(OPT) $(COPT) $(CWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
 CPPFLAGS  = $(MCFLAGS) $(OPT) $(CPPOPT) $(CPPWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.cpp=.lst)) $(DEFS)
 ifeq ($(USE_LINK_GC),yes)
   LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--gc-sections $(LLIBDIR)
diff --git a/os/ports/GCC/MSP430/rules.mk b/os/ports/GCC/MSP430/rules.mk
index 181feba88..81eb443eb 100644
--- a/os/ports/GCC/MSP430/rules.mk
+++ b/os/ports/GCC/MSP430/rules.mk
@@ -2,6 +2,7 @@
 
 # Automatic compiler options
 OPT = $(USE_OPT)
+COPT = $(USE_COPT)
 CPPOPT = $(USE_CPPOPT)
 ifeq ($(USE_CURRP_CACHING),yes)
   OPT += -ffixed-r7 -DCH_CURRP_REGISTER_CACHE='"r7"'
@@ -33,7 +34,7 @@ LIBS    = $(DLIBS) $(ULIBS)
 MCFLAGS = -mmcu=$(MCU)
 ODFLAGS	= -x --syms
 ASFLAGS = $(MCFLAGS) -Wa,-amhls=$(<:.s=.lst) $(ADEFS)
-CPFLAGS = $(MCFLAGS) $(OPT) $(WARN) -Wa,-alms=$(<:.c=.lst) $(DEFS)
+CPFLAGS = $(MCFLAGS) $(OPT) $(COPT) $(WARN) -Wa,-alms=$(<:.c=.lst) $(DEFS)
 ifeq ($(LINK_GC),yes)
   LDFLAGS = $(MCFLAGS) -T$(LDSCRIPT) -Wl,-Map=$(PROJECT).map,--cref,--no-warn-mismatch,--gc-sections $(LLIBDIR)
 else
diff --git a/os/ports/GCC/PPC/rules.mk b/os/ports/GCC/PPC/rules.mk
index 4e45135d4..b5f5060ef 100644
--- a/os/ports/GCC/PPC/rules.mk
+++ b/os/ports/GCC/PPC/rules.mk
@@ -2,6 +2,7 @@
 
 # Automatic compiler options
 OPT = $(USE_OPT)
+COPT = $(USE_COPT)
 CPPOPT = $(USE_CPPOPT)
 ifeq ($(USE_CURRP_CACHING),yes)
   OPT += -ffixed-r7 -DCH_CURRP_REGISTER_CACHE='"r7"'
@@ -33,7 +34,7 @@ LIBS    = $(DLIBS) $(ULIBS)
 MCFLAGS = -mcpu=$(MCU)
 ODFLAGS	= -x --syms
 ASFLAGS = $(MCFLAGS) -Wa,-amhls=$(<:.s=.lst) $(ADEFS)
-CPFLAGS = $(MCFLAGS) $(OPT) $(CWARN) -Wa,-alms=$(<:.c=.lst) $(DEFS)
+CPFLAGS = $(MCFLAGS) $(OPT) $(COPT) $(CWARN) -Wa,-alms=$(<:.c=.lst) $(DEFS)
 ifeq ($(LINK_GC),yes)
   LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(PROJECT).map,--cref,--no-warn-mismatch,--gc-sections $(LLIBDIR)
 else