arch: Uniformize optimization flag setting across architectures

arch/arm/src/arm/Toolchain.defs

@@ -63,6 +63,8 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 # NuttX buildroot under Linux or Cygwin
@@ -73,14 +75,12 @@ ifeq ($(CONFIG_ARM_OABI_TOOLCHAIN),y)
 else
   CROSSDEV ?= arm-nuttx-eabi-
 endif
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Generic GNU EABI toolchain
 
 ifeq ($(CONFIG_ARM_TOOLCHAIN),GNU_EABI)
   CROSSDEV ?= arm-none-eabi-
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Default toolchain

arch/arm/src/armv6-m/Toolchain.defs

@@ -57,6 +57,8 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 # NuttX buildroot under Linux or Cygwin
@@ -73,11 +75,6 @@ ifeq ($(CONFIG_ARMV6M_TOOLCHAIN),GNU_EABI)
   ARCHCPUFLAGS = -mcpu=cortex-m0 -mthumb -mfloat-abi=soft
 endif
 
-# Individual tools may limit the optimizatin level but, by default, the
-# optimization level will be set to -Os
-
-MAXOPTIMIZATION ?= -Os
-
 # Default toolchain
 
 CC = $(CROSSDEV)gcc

arch/arm/src/armv7-a/Toolchain.defs

@@ -75,6 +75,8 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 ifeq ($(CONFIG_ENDIAN_BIG),y)
@@ -91,14 +93,12 @@ ifeq ($(CONFIG_ARMV7A_OABI_TOOLCHAIN),y)
 else
   CROSSDEV ?= $(TARGET_ARCH)-nuttx-eabi-
 endif
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Generic GNU EABI toolchain
 
 ifeq ($(CONFIG_ARMV7A_TOOLCHAIN),GNU_EABI)
   CROSSDEV ?= $(TARGET_ARCH)-none-eabi-
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Default toolchain

arch/arm/src/armv7-m/Toolchain.defs

@@ -71,6 +71,8 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 # Parametrization for ARCHCPUFLAGS
@@ -117,14 +119,12 @@ else
   CROSSDEV ?= arm-nuttx-eabi-
   ARCHCPUFLAGS = $(TOOLCHAIN_MCPU) -mthumb $(TOOLCHAIN_MFLOAT)
 endif
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Generic GNU EABI toolchain
 
 ifeq ($(CONFIG_ARMV7M_TOOLCHAIN),GNU_EABI)
   CROSSDEV ?= arm-none-eabi-
-  MAXOPTIMIZATION ?= -Os
   ARCHCPUFLAGS = $(TOOLCHAIN_MCPU) -mthumb $(TOOLCHAIN_MFLOAT)
 endif
 
@@ -132,7 +132,6 @@ endif
 
 ifeq ($(CONFIG_ARMV7M_TOOLCHAIN),CLANG)
   CROSSDEV ?= arm-none-eabi-
-  MAXOPTIMIZATION ?= -Os
   ARCHCPUFLAGS = -target arm-none-eabi $(TOOLCHAIN_MCPU) $(TOOLCHAIN_MFLOAT)
   CC = clang
   CXX = clang++

arch/arm/src/armv7-r/Toolchain.defs

@@ -57,6 +57,8 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 ifeq ($(CONFIG_ENDIAN_BIG),y)
@@ -73,14 +75,12 @@ ifeq ($(CONFIG_ARMV7R_OABI_TOOLCHAIN),y)
 else
   CROSSDEV ?= $(TARGET_ARCH)-nuttx-eabi-
 endif
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Generic GNU EABI toolchain
 
 ifeq ($(CONFIG_ARMV7R_TOOLCHAIN),GNU_EABI)
   CROSSDEV ?= $(TARGET_ARCH)-none-eabi-
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Default toolchain

arch/arm/src/armv8-m/Toolchain.defs

@@ -71,6 +71,8 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 # Parametrization for ARCHCPUFLAGS
@@ -107,14 +109,12 @@ else
   CROSSDEV ?= arm-nuttx-eabi-
   ARCHCPUFLAGS = $(TOOLCHAIN_MCPU) -mthumb $(TOOLCHAIN_MFLOAT)
 endif
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Generic GNU EABI toolchain
 
 ifeq ($(CONFIG_ARMV8M_TOOLCHAIN),GNU_EABI)
   CROSSDEV ?= arm-none-eabi-
-  MAXOPTIMIZATION ?= -Os
   ARCHCPUFLAGS = $(TOOLCHAIN_MCPU) -mthumb $(TOOLCHAIN_MFLOAT)
 endif
 
@@ -122,7 +122,6 @@ endif
 
 ifeq ($(CONFIG_ARMV8M_TOOLCHAIN),CLANG)
   CROSSDEV ?= arm-none-eabi-
-  MAXOPTIMIZATION ?= -Os
   ARCHCPUFLAGS = $(TOOLCHAIN_MCPU) -mthumb $(TOOLCHAIN_MFLOAT)
 endif
 

arch/avr/src/avr/Toolchain.defs

@@ -86,13 +86,14 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -O2
 endif
 
 # NuttX buildroot GCC toolchain under Linux or Cygwin
 
 ifeq ($(CONFIG_AVR_TOOLCHAIN),BUILDROOT)
   CROSSDEV ?= avr-nuttx-elf-
-  MAXOPTIMIZATION ?= -O2
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
@@ -100,7 +101,6 @@ endif
 
 ifeq ($(CONFIG_AVR_TOOLCHAIN),CROSSPACK)
   CROSSDEV ?= avr-
-  MAXOPTIMIZATION ?= -O2
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
@@ -108,13 +108,11 @@ endif
 
 ifeq ($(CONFIG_AVR_TOOLCHAIN),LINUXGCC)
   CROSSDEV ?= avr-
-  MAXOPTIMIZATION ?= -O2
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
 ifeq ($(CONFIG_AVR_TOOLCHAIN),WINAVR)
   CROSSDEV ?= avr-
-  MAXOPTIMIZATION ?= -O2
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 

arch/misoc/src/lm32/Toolchain.defs

@@ -57,20 +57,20 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 # NuttX buildroot under Linux or Cygwin
 
 ifeq ($(CONFIG_LM32_TOOLCHAIN),BUILDROOT)
   CROSSDEV ?= lm32-nuttx-elf-
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Generic GNU toolchain
 
 ifeq ($(CONFIG_LM32_TOOLCHAIN),GNUL)
   CROSSDEV ?= lm32-elf-
-  MAXOPTIMIZATION ?= -Os
 endif
 
 # Default toolchain

arch/misoc/src/minerva/Toolchain.defs

@@ -21,8 +21,10 @@
 CROSSDEV = riscv32-unknown-elf-
 ARCHCPUFLAGS = -march=rv32i
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),)
+ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
-MAXOPTIMIZATION ?= -Os
+  MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 # Default toolchain

arch/or1k/src/mor1kx/Toolchain.defs

@@ -49,6 +49,8 @@
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -O2
 endif
 
 # Pick correct or1k architecture selection
@@ -61,7 +63,6 @@ endif
 
 #ifeq ($(CONFIG_OR1K_TOOLCHAIN),GNU_ELF)
 CROSSDEV ?= or1k-elf-
-MAXOPTIMIZATION ?= -O2
 ARCHCPUFLAGS = -mboard=de0_nano
 ARCHPICFLAGS = -fpic -membedded-pic
 LDFLAGS += -nostartfiles -nodefaultlibs

arch/risc-v/src/rv64gc/Toolchain.defs

@@ -49,6 +49,8 @@ endif
 
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
+else
+  MAXOPTIMIZATION ?= -Os
 endif
 
 # Generic GNU RVG toolchain
@@ -57,13 +59,6 @@ ifeq ($(CONFIG_RISCV_TOOLCHAIN),GNU_RVG)
   CROSSDEV ?= riscv64-unknown-elf-
 endif
 
-# Individual tools may limit the optimization level but, by default, the
-# optimization level will be set to -Os
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),)
-MAXOPTIMIZATION ?= -Os
-endif
-
 # Default toolchain
 
 CC = $(CROSSDEV)gcc

arch/xtensa/src/lx6/Toolchain.defs

@@ -36,7 +36,7 @@ ARCHCPUFLAGS =
 ifeq ($(CONFIG_DEBUG_CUSTOMOPT),y)
   MAXOPTIMIZATION := $(CONFIG_DEBUG_OPTLEVEL)
 else
- MAXOPTIMIZATION := -Os
+  MAXOPTIMIZATION ?= -Os
 endif
 
 # Default toolchain