diff --git a/demos/nil/NIL-STM32F051-DISCOVERY/Makefile b/demos/nil/NIL-STM32F051-DISCOVERY/Makefile
index 3c5d687bf..c759b4983 100644
--- a/demos/nil/NIL-STM32F051-DISCOVERY/Makefile
+++ b/demos/nil/NIL-STM32F051-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/nil/NIL-STM32F100-DISCOVERY/Makefile b/demos/nil/NIL-STM32F100-DISCOVERY/Makefile
index 986130e3d..781dc5b8c 100644
--- a/demos/nil/NIL-STM32F100-DISCOVERY/Makefile
+++ b/demos/nil/NIL-STM32F100-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/nil/NIL-STM32F303-DISCOVERY/Makefile b/demos/nil/NIL-STM32F303-DISCOVERY/Makefile
index 5a95ab821..1305d814d 100644
--- a/demos/nil/NIL-STM32F303-DISCOVERY/Makefile
+++ b/demos/nil/NIL-STM32F303-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/nil/NIL-STM32F373-STM32373C_EVAL/Makefile b/demos/nil/NIL-STM32F373-STM32373C_EVAL/Makefile
index aa0022ec6..e9d20f188 100644
--- a/demos/nil/NIL-STM32F373-STM32373C_EVAL/Makefile
+++ b/demos/nil/NIL-STM32F373-STM32373C_EVAL/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/nil/NIL-STM32L152-DISCOVERY/Makefile b/demos/nil/NIL-STM32L152-DISCOVERY/Makefile
index ecbb27bda..c65d730f3 100644
--- a/demos/nil/NIL-STM32L152-DISCOVERY/Makefile
+++ b/demos/nil/NIL-STM32L152-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-SPC56EC-EVB/Makefile b/demos/rt/RT-SPC56EC-EVB/Makefile
index bd8d1bdb0..9e22b5f89 100644
--- a/demos/rt/RT-SPC56EC-EVB/Makefile
+++ b/demos/rt/RT-SPC56EC-EVB/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = no
diff --git a/demos/rt/RT-SPC56EL-EVB/Makefile b/demos/rt/RT-SPC56EL-EVB/Makefile
index 1ea40628e..64dbd359a 100644
--- a/demos/rt/RT-SPC56EL-EVB/Makefile
+++ b/demos/rt/RT-SPC56EL-EVB/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT =
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = no
diff --git a/demos/rt/RT-STM32F051-DISCOVERY/Makefile b/demos/rt/RT-STM32F051-DISCOVERY/Makefile
index fbc396007..868a54208 100644
--- a/demos/rt/RT-STM32F051-DISCOVERY/Makefile
+++ b/demos/rt/RT-STM32F051-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-STM32F100-DISCOVERY/Makefile b/demos/rt/RT-STM32F100-DISCOVERY/Makefile
index fc07197da..47f870931 100644
--- a/demos/rt/RT-STM32F100-DISCOVERY/Makefile
+++ b/demos/rt/RT-STM32F100-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-STM32F103-OLIMEX_STM32_P103/Makefile b/demos/rt/RT-STM32F103-OLIMEX_STM32_P103/Makefile
index e235f2888..99e45e27f 100644
--- a/demos/rt/RT-STM32F103-OLIMEX_STM32_P103/Makefile
+++ b/demos/rt/RT-STM32F103-OLIMEX_STM32_P103/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-STM32F303-DISCOVERY/Makefile b/demos/rt/RT-STM32F303-DISCOVERY/Makefile
index a271b19d6..6a37ca713 100644
--- a/demos/rt/RT-STM32F303-DISCOVERY/Makefile
+++ b/demos/rt/RT-STM32F303-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-STM32F373-STM32373C_EVAL/Makefile b/demos/rt/RT-STM32F373-STM32373C_EVAL/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/demos/rt/RT-STM32F373-STM32373C_EVAL/Makefile
+++ b/demos/rt/RT-STM32F373-STM32373C_EVAL/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-STM32F407-DISCOVERY-MEMS/Makefile b/demos/rt/RT-STM32F407-DISCOVERY-MEMS/Makefile
index 3e182d0d3..40d1281d3 100644
--- a/demos/rt/RT-STM32F407-DISCOVERY-MEMS/Makefile
+++ b/demos/rt/RT-STM32F407-DISCOVERY-MEMS/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-STM32F407-DISCOVERY/Makefile b/demos/rt/RT-STM32F407-DISCOVERY/Makefile
index 5bca8ad18..22f912bde 100644
--- a/demos/rt/RT-STM32F407-DISCOVERY/Makefile
+++ b/demos/rt/RT-STM32F407-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-STM32F429-DISCOVERY/Makefile b/demos/rt/RT-STM32F429-DISCOVERY/Makefile
index a66330b47..8374a9aa8 100644
--- a/demos/rt/RT-STM32F429-DISCOVERY/Makefile
+++ b/demos/rt/RT-STM32F429-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/demos/rt/RT-STM32L152-DISCOVERY/Makefile b/demos/rt/RT-STM32L152-DISCOVERY/Makefile
index 0b4ab5698..5d6cb1bbd 100644
--- a/demos/rt/RT-STM32L152-DISCOVERY/Makefile
+++ b/demos/rt/RT-STM32L152-DISCOVERY/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/os/common/ports/ARMCMx/compilers/GCC/rules.mk b/os/common/ports/ARMCMx/compilers/GCC/rules.mk
index 1d6def961..75f9b164b 100644
--- a/os/common/ports/ARMCMx/compilers/GCC/rules.mk
+++ b/os/common/ports/ARMCMx/compilers/GCC/rules.mk
@@ -17,6 +17,11 @@ else
   LDOPT :=
 endif
 
+# Linker extra options
+ifneq ($(USE_LDOPT),)
+  LDOPT := $(LDOPT),$(USE_LDOPT)
+endif
+
 # Link time optimizations
 ifeq ($(USE_LTO),yes)
   OPT += -flto
diff --git a/os/common/ports/e200/compilers/GCC/rules.mk b/os/common/ports/e200/compilers/GCC/rules.mk
index 7bf741f52..8ca82cac1 100644
--- a/os/common/ports/e200/compilers/GCC/rules.mk
+++ b/os/common/ports/e200/compilers/GCC/rules.mk
@@ -17,6 +17,11 @@ else
   LDOPT :=
 endif
 
+# Linker extra options
+ifneq ($(USE_LDOPT),)
+  LDOPT := $(LDOPT),$(USE_LDOPT)
+endif
+
 # Link time optimizations
 ifeq ($(USE_LTO),yes)
   OPT += -flto
diff --git a/testhal/STM32F0xx/ADC/Makefile b/testhal/STM32F0xx/ADC/Makefile
index 7ae6ed396..ab318e781 100644
--- a/testhal/STM32F0xx/ADC/Makefile
+++ b/testhal/STM32F0xx/ADC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F0xx/EXT/Makefile b/testhal/STM32F0xx/EXT/Makefile
index 7ae6ed396..ab318e781 100644
--- a/testhal/STM32F0xx/EXT/Makefile
+++ b/testhal/STM32F0xx/EXT/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F0xx/IRQ_STORM/Makefile b/testhal/STM32F0xx/IRQ_STORM/Makefile
index 7ae6ed396..ab318e781 100644
--- a/testhal/STM32F0xx/IRQ_STORM/Makefile
+++ b/testhal/STM32F0xx/IRQ_STORM/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F0xx/PWM-ICU/Makefile b/testhal/STM32F0xx/PWM-ICU/Makefile
index 7ae6ed396..ab318e781 100644
--- a/testhal/STM32F0xx/PWM-ICU/Makefile
+++ b/testhal/STM32F0xx/PWM-ICU/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F0xx/SPI/Makefile b/testhal/STM32F0xx/SPI/Makefile
index 7ae6ed396..ab318e781 100644
--- a/testhal/STM32F0xx/SPI/Makefile
+++ b/testhal/STM32F0xx/SPI/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F0xx/UART/Makefile b/testhal/STM32F0xx/UART/Makefile
index 7ae6ed396..ab318e781 100644
--- a/testhal/STM32F0xx/UART/Makefile
+++ b/testhal/STM32F0xx/UART/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F1xx/ADC/Makefile b/testhal/STM32F1xx/ADC/Makefile
index 1718812cc..59c540dfd 100644
--- a/testhal/STM32F1xx/ADC/Makefile
+++ b/testhal/STM32F1xx/ADC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F1xx/CAN/Makefile b/testhal/STM32F1xx/CAN/Makefile
index 1718812cc..59c540dfd 100644
--- a/testhal/STM32F1xx/CAN/Makefile
+++ b/testhal/STM32F1xx/CAN/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F1xx/EXT/Makefile b/testhal/STM32F1xx/EXT/Makefile
index 1718812cc..59c540dfd 100644
--- a/testhal/STM32F1xx/EXT/Makefile
+++ b/testhal/STM32F1xx/EXT/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F1xx/IRQ_STORM/Makefile b/testhal/STM32F1xx/IRQ_STORM/Makefile
index 1718812cc..59c540dfd 100644
--- a/testhal/STM32F1xx/IRQ_STORM/Makefile
+++ b/testhal/STM32F1xx/IRQ_STORM/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F1xx/PWM-ICU/Makefile b/testhal/STM32F1xx/PWM-ICU/Makefile
index 1718812cc..59c540dfd 100644
--- a/testhal/STM32F1xx/PWM-ICU/Makefile
+++ b/testhal/STM32F1xx/PWM-ICU/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F1xx/SPI/Makefile b/testhal/STM32F1xx/SPI/Makefile
index 1718812cc..59c540dfd 100644
--- a/testhal/STM32F1xx/SPI/Makefile
+++ b/testhal/STM32F1xx/SPI/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F1xx/UART/Makefile b/testhal/STM32F1xx/UART/Makefile
index 1718812cc..59c540dfd 100644
--- a/testhal/STM32F1xx/UART/Makefile
+++ b/testhal/STM32F1xx/UART/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F1xx/USB_CDC/Makefile b/testhal/STM32F1xx/USB_CDC/Makefile
index ec70965c0..1f9924734 100644
--- a/testhal/STM32F1xx/USB_CDC/Makefile
+++ b/testhal/STM32F1xx/USB_CDC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/ADC/Makefile b/testhal/STM32F30x/ADC/Makefile
index 0f385b7e7..46e438ab8 100644
--- a/testhal/STM32F30x/ADC/Makefile
+++ b/testhal/STM32F30x/ADC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/ADC_DUAL/Makefile b/testhal/STM32F30x/ADC_DUAL/Makefile
index 0f385b7e7..46e438ab8 100644
--- a/testhal/STM32F30x/ADC_DUAL/Makefile
+++ b/testhal/STM32F30x/ADC_DUAL/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/CAN/Makefile b/testhal/STM32F30x/CAN/Makefile
index 0f385b7e7..46e438ab8 100644
--- a/testhal/STM32F30x/CAN/Makefile
+++ b/testhal/STM32F30x/CAN/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/EXT/Makefile b/testhal/STM32F30x/EXT/Makefile
index 0f385b7e7..46e438ab8 100644
--- a/testhal/STM32F30x/EXT/Makefile
+++ b/testhal/STM32F30x/EXT/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/IRQ_STORM/Makefile b/testhal/STM32F30x/IRQ_STORM/Makefile
index 0f385b7e7..46e438ab8 100644
--- a/testhal/STM32F30x/IRQ_STORM/Makefile
+++ b/testhal/STM32F30x/IRQ_STORM/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/PWM-ICU/Makefile b/testhal/STM32F30x/PWM-ICU/Makefile
index 0f385b7e7..46e438ab8 100644
--- a/testhal/STM32F30x/PWM-ICU/Makefile
+++ b/testhal/STM32F30x/PWM-ICU/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/SPI/Makefile b/testhal/STM32F30x/SPI/Makefile
index 0f385b7e7..46e438ab8 100644
--- a/testhal/STM32F30x/SPI/Makefile
+++ b/testhal/STM32F30x/SPI/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/UART/Makefile b/testhal/STM32F30x/UART/Makefile
index 0f385b7e7..46e438ab8 100644
--- a/testhal/STM32F30x/UART/Makefile
+++ b/testhal/STM32F30x/UART/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F30x/USB_CDC/Makefile b/testhal/STM32F30x/USB_CDC/Makefile
index 0e1f1a19d..268398918 100644
--- a/testhal/STM32F30x/USB_CDC/Makefile
+++ b/testhal/STM32F30x/USB_CDC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/ADC/Makefile b/testhal/STM32F37x/ADC/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/ADC/Makefile
+++ b/testhal/STM32F37x/ADC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/CAN/Makefile b/testhal/STM32F37x/CAN/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/CAN/Makefile
+++ b/testhal/STM32F37x/CAN/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/EXT/Makefile b/testhal/STM32F37x/EXT/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/EXT/Makefile
+++ b/testhal/STM32F37x/EXT/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/I2C/Makefile b/testhal/STM32F37x/I2C/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/I2C/Makefile
+++ b/testhal/STM32F37x/I2C/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/IRQ_STORM/Makefile b/testhal/STM32F37x/IRQ_STORM/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/IRQ_STORM/Makefile
+++ b/testhal/STM32F37x/IRQ_STORM/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/PWM-ICU/Makefile b/testhal/STM32F37x/PWM-ICU/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/PWM-ICU/Makefile
+++ b/testhal/STM32F37x/PWM-ICU/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/SDADC/Makefile b/testhal/STM32F37x/SDADC/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/SDADC/Makefile
+++ b/testhal/STM32F37x/SDADC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/SPI/Makefile b/testhal/STM32F37x/SPI/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/SPI/Makefile
+++ b/testhal/STM32F37x/SPI/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/UART/Makefile b/testhal/STM32F37x/UART/Makefile
index dbe974aaa..d8a5decbb 100644
--- a/testhal/STM32F37x/UART/Makefile
+++ b/testhal/STM32F37x/UART/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F37x/USB_CDC/Makefile b/testhal/STM32F37x/USB_CDC/Makefile
index fb9c1ace0..ee16155a1 100644
--- a/testhal/STM32F37x/USB_CDC/Makefile
+++ b/testhal/STM32F37x/USB_CDC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/ADC/Makefile b/testhal/STM32F4xx/ADC/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/ADC/Makefile
+++ b/testhal/STM32F4xx/ADC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/CAN/Makefile b/testhal/STM32F4xx/CAN/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/CAN/Makefile
+++ b/testhal/STM32F4xx/CAN/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/DMA_STORM/Makefile b/testhal/STM32F4xx/DMA_STORM/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/DMA_STORM/Makefile
+++ b/testhal/STM32F4xx/DMA_STORM/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/EXT/Makefile b/testhal/STM32F4xx/EXT/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/EXT/Makefile
+++ b/testhal/STM32F4xx/EXT/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/GPT/Makefile b/testhal/STM32F4xx/GPT/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/GPT/Makefile
+++ b/testhal/STM32F4xx/GPT/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/I2C/Makefile b/testhal/STM32F4xx/I2C/Makefile
index 6a0c14e90..609ed9012 100644
--- a/testhal/STM32F4xx/I2C/Makefile
+++ b/testhal/STM32F4xx/I2C/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/I2S/Makefile b/testhal/STM32F4xx/I2S/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/I2S/Makefile
+++ b/testhal/STM32F4xx/I2S/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/IRQ_STORM/Makefile b/testhal/STM32F4xx/IRQ_STORM/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/IRQ_STORM/Makefile
+++ b/testhal/STM32F4xx/IRQ_STORM/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/IRQ_STORM_FPU/Makefile b/testhal/STM32F4xx/IRQ_STORM_FPU/Makefile
index 3100939d5..43b51f622 100644
--- a/testhal/STM32F4xx/IRQ_STORM_FPU/Makefile
+++ b/testhal/STM32F4xx/IRQ_STORM_FPU/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/PWM-ICU/Makefile b/testhal/STM32F4xx/PWM-ICU/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/PWM-ICU/Makefile
+++ b/testhal/STM32F4xx/PWM-ICU/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/RTC/Makefile b/testhal/STM32F4xx/RTC/Makefile
index a0db15ea5..1eb858fbd 100644
--- a/testhal/STM32F4xx/RTC/Makefile
+++ b/testhal/STM32F4xx/RTC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/SDC/Makefile b/testhal/STM32F4xx/SDC/Makefile
index 30ea3eb79..c7a90fa3b 100644
--- a/testhal/STM32F4xx/SDC/Makefile
+++ b/testhal/STM32F4xx/SDC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/SPI/Makefile b/testhal/STM32F4xx/SPI/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/SPI/Makefile
+++ b/testhal/STM32F4xx/SPI/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/UART/Makefile b/testhal/STM32F4xx/UART/Makefile
index 18c38da43..12616439a 100644
--- a/testhal/STM32F4xx/UART/Makefile
+++ b/testhal/STM32F4xx/UART/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32F4xx/USB_CDC/Makefile b/testhal/STM32F4xx/USB_CDC/Makefile
index 16807d085..41b4492a1 100644
--- a/testhal/STM32F4xx/USB_CDC/Makefile
+++ b/testhal/STM32F4xx/USB_CDC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32L1xx/ADC/Makefile b/testhal/STM32L1xx/ADC/Makefile
index 082ac95a8..ad1bb67f8 100644
--- a/testhal/STM32L1xx/ADC/Makefile
+++ b/testhal/STM32L1xx/ADC/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32L1xx/EXT/Makefile b/testhal/STM32L1xx/EXT/Makefile
index 082ac95a8..ad1bb67f8 100644
--- a/testhal/STM32L1xx/EXT/Makefile
+++ b/testhal/STM32L1xx/EXT/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32L1xx/IRQ_STORM/Makefile b/testhal/STM32L1xx/IRQ_STORM/Makefile
index 082ac95a8..ad1bb67f8 100644
--- a/testhal/STM32L1xx/IRQ_STORM/Makefile
+++ b/testhal/STM32L1xx/IRQ_STORM/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32L1xx/PWM-ICU/Makefile b/testhal/STM32L1xx/PWM-ICU/Makefile
index 082ac95a8..ad1bb67f8 100644
--- a/testhal/STM32L1xx/PWM-ICU/Makefile
+++ b/testhal/STM32L1xx/PWM-ICU/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32L1xx/SPI/Makefile b/testhal/STM32L1xx/SPI/Makefile
index 082ac95a8..ad1bb67f8 100644
--- a/testhal/STM32L1xx/SPI/Makefile
+++ b/testhal/STM32L1xx/SPI/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/STM32L1xx/UART/Makefile b/testhal/STM32L1xx/UART/Makefile
index 082ac95a8..ad1bb67f8 100644
--- a/testhal/STM32L1xx/UART/Makefile
+++ b/testhal/STM32L1xx/UART/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes
diff --git a/testhal/common/testbuild/Makefile b/testhal/common/testbuild/Makefile
index 992a43ffe..ce5346949 100644
--- a/testhal/common/testbuild/Makefile
+++ b/testhal/common/testbuild/Makefile
@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT = 
+endif
+
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
   USE_LTO = yes