diff --git a/demos/TIVA/RT-TM4C123G-LAUNCHPAD/Makefile b/demos/TIVA/RT-TM4C123G-LAUNCHPAD/Makefile
index 322b39be..b3939025 100644
--- a/demos/TIVA/RT-TM4C123G-LAUNCHPAD/Makefile
+++ b/demos/TIVA/RT-TM4C123G-LAUNCHPAD/Makefile
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################
diff --git a/demos/TIVA/RT-TM4C1294-LAUNCHPAD-LWIP/Makefile b/demos/TIVA/RT-TM4C1294-LAUNCHPAD-LWIP/Makefile
index e5cd47a6..add92f10 100644
--- a/demos/TIVA/RT-TM4C1294-LAUNCHPAD-LWIP/Makefile
+++ b/demos/TIVA/RT-TM4C1294-LAUNCHPAD-LWIP/Makefile
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################
diff --git a/demos/TIVA/RT-TM4C1294-LAUNCHPAD/Makefile b/demos/TIVA/RT-TM4C1294-LAUNCHPAD/Makefile
index 63815dfc..2542d289 100644
--- a/demos/TIVA/RT-TM4C1294-LAUNCHPAD/Makefile
+++ b/demos/TIVA/RT-TM4C1294-LAUNCHPAD/Makefile
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################
diff --git a/os/hal/ports/TIVA/LLD/hal_ext_lld.c b/os/hal/ports/TIVA/LLD/GPIO/hal_ext_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_ext_lld.c
rename to os/hal/ports/TIVA/LLD/GPIO/hal_ext_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_ext_lld.h b/os/hal/ports/TIVA/LLD/GPIO/hal_ext_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_ext_lld.h
rename to os/hal/ports/TIVA/LLD/GPIO/hal_ext_lld.h
diff --git a/os/hal/ports/TIVA/LLD/hal_pal_lld.c b/os/hal/ports/TIVA/LLD/GPIO/hal_pal_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_pal_lld.c
rename to os/hal/ports/TIVA/LLD/GPIO/hal_pal_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_pal_lld.h b/os/hal/ports/TIVA/LLD/GPIO/hal_pal_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_pal_lld.h
rename to os/hal/ports/TIVA/LLD/GPIO/hal_pal_lld.h
diff --git a/os/hal/ports/TIVA/LLD/hal_gpt_lld.c b/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_gpt_lld.c
rename to os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_gpt_lld.h b/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_gpt_lld.h
rename to os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.h
diff --git a/os/hal/ports/TIVA/LLD/hal_st_lld.c b/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_st_lld.c
rename to os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_st_lld.h b/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_st_lld.h
rename to os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h
diff --git a/os/hal/ports/TIVA/LLD/tiva_gpt.h b/os/hal/ports/TIVA/LLD/GPTM/tiva_gpt.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/tiva_gpt.h
rename to os/hal/ports/TIVA/LLD/GPTM/tiva_gpt.h
diff --git a/os/hal/ports/TIVA/LLD/hal_i2c_lld.c b/os/hal/ports/TIVA/LLD/I2C/hal_i2c_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_i2c_lld.c
rename to os/hal/ports/TIVA/LLD/I2C/hal_i2c_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_i2c_lld.h b/os/hal/ports/TIVA/LLD/I2C/hal_i2c_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_i2c_lld.h
rename to os/hal/ports/TIVA/LLD/I2C/hal_i2c_lld.h
diff --git a/os/hal/ports/TIVA/LLD/hal_mac_lld.c b/os/hal/ports/TIVA/LLD/MAC/hal_mac_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_mac_lld.c
rename to os/hal/ports/TIVA/LLD/MAC/hal_mac_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_mac_lld.h b/os/hal/ports/TIVA/LLD/MAC/hal_mac_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_mac_lld.h
rename to os/hal/ports/TIVA/LLD/MAC/hal_mac_lld.h
diff --git a/os/hal/ports/TIVA/LLD/hal_pwm_lld.c b/os/hal/ports/TIVA/LLD/PWM/hal_pwm_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_pwm_lld.c
rename to os/hal/ports/TIVA/LLD/PWM/hal_pwm_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_pwm_lld.h b/os/hal/ports/TIVA/LLD/PWM/hal_pwm_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_pwm_lld.h
rename to os/hal/ports/TIVA/LLD/PWM/hal_pwm_lld.h
diff --git a/os/hal/ports/TIVA/LLD/hal_spi_lld.c b/os/hal/ports/TIVA/LLD/SSI/hal_spi_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_spi_lld.c
rename to os/hal/ports/TIVA/LLD/SSI/hal_spi_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_spi_lld.h b/os/hal/ports/TIVA/LLD/SSI/hal_spi_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_spi_lld.h
rename to os/hal/ports/TIVA/LLD/SSI/hal_spi_lld.h
diff --git a/os/hal/ports/TIVA/LLD/hal_serial_lld.c b/os/hal/ports/TIVA/LLD/UART/hal_serial_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_serial_lld.c
rename to os/hal/ports/TIVA/LLD/UART/hal_serial_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_serial_lld.h b/os/hal/ports/TIVA/LLD/UART/hal_serial_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_serial_lld.h
rename to os/hal/ports/TIVA/LLD/UART/hal_serial_lld.h
diff --git a/os/hal/ports/TIVA/LLD/hal_wdg_lld.c b/os/hal/ports/TIVA/LLD/WDT/hal_wdg_lld.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_wdg_lld.c
rename to os/hal/ports/TIVA/LLD/WDT/hal_wdg_lld.c
diff --git a/os/hal/ports/TIVA/LLD/hal_wdg_lld.h b/os/hal/ports/TIVA/LLD/WDT/hal_wdg_lld.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/hal_wdg_lld.h
rename to os/hal/ports/TIVA/LLD/WDT/hal_wdg_lld.h
diff --git a/os/hal/ports/TIVA/LLD/tiva_udma.c b/os/hal/ports/TIVA/LLD/uDMA/tiva_udma.c
similarity index 100%
rename from os/hal/ports/TIVA/LLD/tiva_udma.c
rename to os/hal/ports/TIVA/LLD/uDMA/tiva_udma.c
diff --git a/os/hal/ports/TIVA/LLD/tiva_udma.h b/os/hal/ports/TIVA/LLD/uDMA/tiva_udma.h
similarity index 100%
rename from os/hal/ports/TIVA/LLD/tiva_udma.h
rename to os/hal/ports/TIVA/LLD/uDMA/tiva_udma.h
diff --git a/os/hal/ports/TIVA/TM4C123x/platform.mk b/os/hal/ports/TIVA/TM4C123x/platform.mk
index 0abafccd..ae1ea086 100644
--- a/os/hal/ports/TIVA/TM4C123x/platform.mk
+++ b/os/hal/ports/TIVA/TM4C123x/platform.mk
@@ -1,18 +1,58 @@
 # List of all the TM4C123x platform files.
-PLATFORMSRC = ${CHIBIOS}/os/hal/ports/common/ARMCMx/nvic.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/TM4C123x/hal_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_st_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_pal_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_serial_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_i2c_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_gpt_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_pwm_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_spi_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/tiva_udma.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_ext_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_wdg_lld.c
+ifeq ($(USE_SMART_BUILD),yes)
+HALCONF := $(strip $(shell cat halconf.h | egrep -e "\#define"))
+
+PLATFORMSRC := $(CHIBIOS)/os/hal/ports/common/ARMCMx/nvic.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/TM4C123x/hal_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/uDMA/tiva_udma.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c
+ifneq ($(findstring HAL_USE_EXT TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO/hal_ext_lld.c
+endif
+ifneq ($(findstring HAL_USE_PAL TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO/hal_pal_lld.c
+endif
+ifneq ($(findstring HAL_USE_I2C TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/I2C/hal_i2c_lld.c
+endif
+ifneq ($(findstring HAL_USE_SPI TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/SSI/hal_spi_lld.c
+endif
+ifneq ($(findstring HAL_USE_GPT TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c
+endif
+ifneq ($(findstring HAL_USE_PWM TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/PWM/hal_pwm_lld.c
+endif
+ifneq ($(findstring HAL_USE_SERIAL TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/UART/hal_serial_lld.c
+endif
+ifneq ($(findstring HAL_USE_WDG TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/WDT/hal_wdg_lld.c
+endif
+else
+PLATFORMSRC := ${CHIBIOS}/os/hal/ports/common/ARMCMx/nvic.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/TM4C123x/hal_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO/hal_ext_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO/hal_pal_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/I2C/hal_i2c_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/PWM/hal_pwm_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/SSI/hal_spi_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/UART/hal_serial_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/uDMA/tiva_udma.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/WDT/hal_wdg_lld.c
+endif
 
 # Required include directories
-PLATFORMINC = ${CHIBIOS}/os/hal/ports/common/ARMCMx \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/TM4C123x \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD
+PLATFORMINC := ${CHIBIOS}/os/hal/ports/common/ARMCMx \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/TM4C123x \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/I2C \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/PWM \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/SSI \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/UART \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/uDMA \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/WDT
diff --git a/os/hal/ports/TIVA/TM4C129x/platform.mk b/os/hal/ports/TIVA/TM4C129x/platform.mk
index b8363f37..2cf5102f 100644
--- a/os/hal/ports/TIVA/TM4C129x/platform.mk
+++ b/os/hal/ports/TIVA/TM4C129x/platform.mk
@@ -1,14 +1,62 @@
 # List of all the TM4C129x platform files.
+ifeq ($(USE_SMART_BUILD),yes)
+HALCONF := $(strip $(shell cat halconf.h | egrep -e "\#define"))
+
+PLATFORMSRC := $(CHIBIOS)/os/hal/ports/common/ARMCMx/nvic.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/TM4C129x/hal_lld.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/uDMA/tiva_udma.c \
+               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c
+ifneq ($(findstring HAL_USE_EXT TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO/hal_ext_lld.c
+endif
+ifneq ($(findstring HAL_USE_PAL TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO/hal_pal_lld.c
+endif
+ifneq ($(findstring HAL_USE_I2C TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/I2C/hal_i2c_lld.c
+endif
+ifneq ($(findstring HAL_USE_MAC TRUE,$(HALCONF)),)
+PLATFORMSRC += $(CHIBIOS_CONTRIB)/os/hal/ports/TIVA/LLD/MAC/hal_mac_lld.c
+endif
+ifneq ($(findstring HAL_USE_SPI TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/SSI/hal_spi_lld.c
+endif
+ifneq ($(findstring HAL_USE_GPT TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c
+endif
+ifneq ($(findstring HAL_USE_PWM TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/PWM/hal_pwm_lld.c
+endif
+ifneq ($(findstring HAL_USE_SERIAL TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/UART/hal_serial_lld.c
+endif
+ifneq ($(findstring HAL_USE_WDG TRUE,$(HALCONF)),)
+PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/WDT/hal_wdg_lld.c
+endif
+else
 PLATFORMSRC = ${CHIBIOS}/os/hal/ports/common/ARMCMx/nvic.c \
               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/TM4C129x/hal_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_st_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_pal_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_serial_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_mac_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_ext_lld.c \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/hal_wdg_lld.c
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO/hal_ext_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO/hal_pal_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/I2C/hal_i2c_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/MAC/hal_mac_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/PWM/hal_pwm_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/SSI/hal_spi_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/UART/hal_serial_lld.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/uDMA/tiva_udma.c \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/WDT/hal_wdg_lld.c
 
 # Required include directories
 PLATFORMINC = ${CHIBIOS}/os/hal/ports/common/ARMCMx \
               ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/TM4C129x \
-              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPIO \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/GPTM \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/I2C \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/MAC \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/PWM \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/SSI \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/UART \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/uDMA \
+              ${CHIBIOS_CONTRIB}/os/hal/ports/TIVA/LLD/WDT
diff --git a/testhal/TIVA/TM4C123x/EXT/Makefile b/testhal/TIVA/TM4C123x/EXT/Makefile
index f5870835..f2833ec2 100644
--- a/testhal/TIVA/TM4C123x/EXT/Makefile
+++ b/testhal/TIVA/TM4C123x/EXT/Makefile
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################
diff --git a/testhal/TIVA/TM4C123x/GPT/Makefile b/testhal/TIVA/TM4C123x/GPT/Makefile
index f5870835..f2833ec2 100644
--- a/testhal/TIVA/TM4C123x/GPT/Makefile
+++ b/testhal/TIVA/TM4C123x/GPT/Makefile
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################
diff --git a/testhal/TIVA/TM4C123x/I2C/Makefile b/testhal/TIVA/TM4C123x/I2C/Makefile
index 32abbeee..d4d1334b 100644
--- a/testhal/TIVA/TM4C123x/I2C/Makefile
+++ b/testhal/TIVA/TM4C123x/I2C/Makefile
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################
diff --git a/testhal/TIVA/TM4C123x/PWM/Makefile b/testhal/TIVA/TM4C123x/PWM/Makefile
index f5870835..f2833ec2 100644
--- a/testhal/TIVA/TM4C123x/PWM/Makefile
+++ b/testhal/TIVA/TM4C123x/PWM/Makefile
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################
diff --git a/testhal/TIVA/TM4C123x/SPI/Makefile b/testhal/TIVA/TM4C123x/SPI/Makefile
index f5870835..f2833ec2 100644
--- a/testhal/TIVA/TM4C123x/SPI/Makefile
+++ b/testhal/TIVA/TM4C123x/SPI/Makefile
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################
diff --git a/testhal/TIVA/TM4C123x/WDG/Makefile b/testhal/TIVA/TM4C123x/WDG/Makefile
index 5ae01c93..f2833ec2 100644
--- a/testhal/TIVA/TM4C123x/WDG/Makefile
+++ b/testhal/TIVA/TM4C123x/WDG/Makefile
@@ -5,7 +5,7 @@
 
 # Compiler options here.
 ifeq ($(USE_OPT),)
-  USE_OPT = -O0 -ggdb -fomit-frame-pointer -falign-functions=16
+  USE_OPT = -O2 -ggdb -fomit-frame-pointer -falign-functions=16
 endif
 
 # C specific options here (added to USE_OPT).
@@ -43,6 +43,12 @@ ifeq ($(USE_VERBOSE_COMPILE),)
   USE_VERBOSE_COMPILE = no
 endif
 
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
 #
 # Build global options
 ##############################################################################