git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6286 35acf78f-673a-0410-8e92-d51de3d6d3f4

demos/nil/NIL-STM32F051-DISCOVERY/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

demos/nil/NIL-STM32F303-DISCOVERY/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

demos/nil/NIL-STM32F373-STM32373C_EVAL/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

demos/nil/NIL-STM32L152-DISCOVERY/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

demos/rt/RT-STM32F051-DISCOVERY/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

demos/rt/RT-STM32F303-DISCOVERY/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

demos/rt/RT-STM32F407-DISCOVERY-MEMS/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

demos/rt/RT-STM32F407-DISCOVERY/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

os/common/ports/ARMCMx/compilers/GCC/rules.mk

@@ -4,6 +4,21 @@
 # Processing options coming from the upper Makefile.
 #
 
+# Compiler options
+OPT = $(USE_OPT)
+COPT = $(USE_COPT)
+CPPOPT = $(USE_CPPOPT)
+
+# Garbage collection
+ifeq ($(USE_LINK_GC),yes)
+  OPT += -ffunction-sections -fdata-sections -fno-common
+endif
+
+# Link time optimizations
+ifeq ($(USE_LTO),yes)
+  OPT += -flto
+endif
+
 # FPU-related options
 ifeq ($(USE_FPU),yes)
   USE_OPT += -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -fsingle-precision-constant
@@ -45,14 +60,6 @@ endif
 OUTFILES = $(BUILDDIR)/$(PROJECT).elf $(BUILDDIR)/$(PROJECT).hex \
            $(BUILDDIR)/$(PROJECT).bin $(BUILDDIR)/$(PROJECT).dmp
 
-# Automatic compiler options
-OPT = $(USE_OPT)
-COPT = $(USE_COPT)
-CPPOPT = $(USE_CPPOPT)
-ifeq ($(USE_LINK_GC),yes)
-  OPT += -ffunction-sections -fdata-sections -fno-common
-endif
-
 # Source files groups and paths
 ifeq ($(USE_THUMB),yes)
   TCSRC += $(CSRC)
@@ -96,7 +103,7 @@ ASFLAGS   = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.s=.lst)) $(ADEFS)
 ASXFLAGS  = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.S=.lst)) $(ADEFS)
 CFLAGS    = $(MCFLAGS) $(OPT) $(COPT) $(CWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
 CPPFLAGS  = $(MCFLAGS) $(OPT) $(CPPOPT) $(CPPWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.cpp=.lst)) $(DEFS)
-LDFLAGS   = $(MCFLAGS) -nostartfiles $(LLIBDIR) -Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--library-path=$(RULESPATH),--script=$(LDSCRIPT),$(LDOPT)
+LDFLAGS   = $(MCFLAGS) $(OPT) -nostartfiles $(LLIBDIR) -Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--library-path=$(RULESPATH),--script=$(LDSCRIPT),$(LDOPT)
 
 # Thumb interwork enabled only if needed because it kills performance.
 ifneq ($(TSRC),)

testhal/STM32F0xx/ADC/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F0xx/EXT/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F0xx/IRQ_STORM/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F0xx/PWM-ICU/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F0xx/SPI/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F0xx/UART/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/ADC/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/ADC_DUAL/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/CAN/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/EXT/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/IRQ_STORM/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/PWM-ICU/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/SPI/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/UART/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F30x/USB_CDC/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/ADC/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/CAN/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/DMA_STORM/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/EXT/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/GPT/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/I2C/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/IRQ_STORM/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/IRQ_STORM_FPU/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/PWM-ICU/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/RTC/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/SDC/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/SPI/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/UART/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/STM32F4xx/USB_CDC/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes

testhal/common/testbuild/Makefile

@@ -23,6 +23,11 @@ ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes
 endif
 
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = yes
+endif
+
 # If enabled, this option allows to compile the application in THUMB mode.
 ifeq ($(USE_THUMB),)
   USE_THUMB = yes