From 05965678f60cda32168eae2c70d411e309504821 Mon Sep 17 00:00:00 2001
From: Olivier Martin <olivier.martin.fr@gmail.com>
Date: Tue, 25 Mar 2014 00:49:42 +0000
Subject: [PATCH] Update GNU Makefiles to generate DEBUG binaries

* '-g' has been added for all the build to produce debugging information. '-g' allows to get the symbols when debugging with GDB.
* introduce the macro 'DEBUG' to enable/disable build optimization.

Limitations:
* Support in non-Makefile projects has been added.
---
 workspace_tools/export/codesourcery_lpc1768.tmpl | 8 +++++++-
 workspace_tools/export/gcc_arm_disco_f051r8.tmpl | 8 +++++++-
 workspace_tools/export/gcc_arm_disco_f100rb.tmpl | 8 +++++++-
 workspace_tools/export/gcc_arm_disco_f407vg.tmpl | 8 +++++++-
 workspace_tools/export/gcc_arm_k20d5m.tmpl       | 8 +++++++-
 workspace_tools/export/gcc_arm_kl05z.tmpl        | 8 +++++++-
 workspace_tools/export/gcc_arm_kl25z.tmpl        | 8 +++++++-
 workspace_tools/export/gcc_arm_kl46z.tmpl        | 8 +++++++-
 workspace_tools/export/gcc_arm_lpc1114.tmpl      | 8 +++++++-
 workspace_tools/export/gcc_arm_lpc11u24.tmpl     | 8 +++++++-
 workspace_tools/export/gcc_arm_lpc11u35_401.tmpl | 8 +++++++-
 workspace_tools/export/gcc_arm_lpc11u35_501.tmpl | 8 +++++++-
 workspace_tools/export/gcc_arm_lpc1768.tmpl      | 8 +++++++-
 workspace_tools/export/gcc_arm_lpc4088.tmpl      | 8 +++++++-
 workspace_tools/export/gcc_arm_stm32f407.tmpl    | 8 +++++++-
 15 files changed, 105 insertions(+), 15 deletions(-)

diff --git a/workspace_tools/export/codesourcery_lpc1768.tmpl b/workspace_tools/export/codesourcery_lpc1768.tmpl
index 4bfd151c15..0fa0fa6bd8 100644
--- a/workspace_tools/export/codesourcery_lpc1768.tmpl
+++ b/workspace_tools/export/codesourcery_lpc1768.tmpl
@@ -13,7 +13,7 @@ LINKER_SCRIPT = {{linker_script}}
 ############################################################################### 
 CC = $(GCC_BIN)arm-none-eabi-gcc
 CPP = $(GCC_BIN)arm-none-eabi-g++
-CC_FLAGS = -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections 
+CC_FLAGS = -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections 
 ONLY_C_FLAGS = -std=gnu99
 ONLY_CPP_FLAGS = -std=gnu++98
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
@@ -27,6 +27,12 @@ LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc
 
 OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_disco_f051r8.tmpl b/workspace_tools/export/gcc_arm_disco_f051r8.tmpl
index d8bcf07d2c..1eb6d9a9b6 100644
--- a/workspace_tools/export/gcc_arm_disco_f051r8.tmpl
+++ b/workspace_tools/export/gcc_arm_disco_f051r8.tmpl
@@ -20,7 +20,7 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
 SIZE 	= $(GCC_BIN)arm-none-eabi-size
 
 CPU = -mcpu=cortex-m0 -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections -g
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m0 -mthumb -Wl,--gc-sections --specs=nano.specs
@@ -28,6 +28,12 @@ LD_FLAGS = -mcpu=cortex-m0 -mthumb -Wl,--gc-sections --specs=nano.specs
 LD_FLAGS += -Wl,-Map=$(PROJECT).map,--cref
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin $(PROJECT).hex size
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_disco_f100rb.tmpl b/workspace_tools/export/gcc_arm_disco_f100rb.tmpl
index 6830ab287c..3112e14c64 100644
--- a/workspace_tools/export/gcc_arm_disco_f100rb.tmpl
+++ b/workspace_tools/export/gcc_arm_disco_f100rb.tmpl
@@ -20,13 +20,19 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
 SIZE 	= $(GCC_BIN)arm-none-eabi-size
 
 CPU = -mcpu=cortex-m3 -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m3 -mthumb -Wl,--gc-sections --specs=nano.specs
 LD_FLAGS += -Wl,-Map=$(PROJECT).map,--cref
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin $(PROJECT).hex size
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_disco_f407vg.tmpl b/workspace_tools/export/gcc_arm_disco_f407vg.tmpl
index 5384d24d23..dc0236cf49 100644
--- a/workspace_tools/export/gcc_arm_disco_f407vg.tmpl
+++ b/workspace_tools/export/gcc_arm_disco_f407vg.tmpl
@@ -20,13 +20,19 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
 SIZE 	= $(GCC_BIN)arm-none-eabi-size
 
 CPU = -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=softfp
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections -g3
+CC_FLAGS = $(CPU) -c -g3 -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m4 -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_FLAGS += -Wl,-Map=$(PROJECT).map,--cref
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin $(PROJECT).hex size
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_k20d5m.tmpl b/workspace_tools/export/gcc_arm_k20d5m.tmpl
index a4d9e6f67d..fb2248b198 100644
--- a/workspace_tools/export/gcc_arm_k20d5m.tmpl
+++ b/workspace_tools/export/gcc_arm_k20d5m.tmpl
@@ -18,12 +18,18 @@ LD      = $(GCC_BIN)arm-none-eabi-gcc
 OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 
 CPU = -mcpu=cortex-m4 -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m4 -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_kl05z.tmpl b/workspace_tools/export/gcc_arm_kl05z.tmpl
index f4dd633871..7e484c02ba 100644
--- a/workspace_tools/export/gcc_arm_kl05z.tmpl
+++ b/workspace_tools/export/gcc_arm_kl05z.tmpl
@@ -18,12 +18,18 @@ LD      = $(GCC_BIN)arm-none-eabi-gcc
 OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 
 CPU = -mcpu=cortex-m0plus -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m0plus -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_kl25z.tmpl b/workspace_tools/export/gcc_arm_kl25z.tmpl
index f4dd633871..7e484c02ba 100644
--- a/workspace_tools/export/gcc_arm_kl25z.tmpl
+++ b/workspace_tools/export/gcc_arm_kl25z.tmpl
@@ -18,12 +18,18 @@ LD      = $(GCC_BIN)arm-none-eabi-gcc
 OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 
 CPU = -mcpu=cortex-m0plus -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m0plus -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_kl46z.tmpl b/workspace_tools/export/gcc_arm_kl46z.tmpl
index f4dd633871..7e484c02ba 100644
--- a/workspace_tools/export/gcc_arm_kl46z.tmpl
+++ b/workspace_tools/export/gcc_arm_kl46z.tmpl
@@ -18,12 +18,18 @@ LD      = $(GCC_BIN)arm-none-eabi-gcc
 OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 
 CPU = -mcpu=cortex-m0plus -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m0plus -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_lpc1114.tmpl b/workspace_tools/export/gcc_arm_lpc1114.tmpl
index f53771ade2..4bbc5e1a0d 100644
--- a/workspace_tools/export/gcc_arm_lpc1114.tmpl
+++ b/workspace_tools/export/gcc_arm_lpc1114.tmpl
@@ -20,13 +20,19 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
 SIZE 	= $(GCC_BIN)arm-none-eabi-size
 
 CPU = -mcpu=cortex-m0 -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m0 -mthumb -Wl,--gc-sections --specs=nano.specs
 LD_FLAGS += -Wl,-Map=$(PROJECT).map,--cref
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin $(PROJECT).hex size
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_lpc11u24.tmpl b/workspace_tools/export/gcc_arm_lpc11u24.tmpl
index ac89299a93..b1292f6914 100644
--- a/workspace_tools/export/gcc_arm_lpc11u24.tmpl
+++ b/workspace_tools/export/gcc_arm_lpc11u24.tmpl
@@ -18,12 +18,18 @@ LD      = $(GCC_BIN)arm-none-eabi-gcc
 OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 
 CPU = -mcpu=cortex-m0 -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m0 -mthumb -Wl,--gc-sections --specs=nano.specs
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_lpc11u35_401.tmpl b/workspace_tools/export/gcc_arm_lpc11u35_401.tmpl
index f53771ade2..4bbc5e1a0d 100644
--- a/workspace_tools/export/gcc_arm_lpc11u35_401.tmpl
+++ b/workspace_tools/export/gcc_arm_lpc11u35_401.tmpl
@@ -20,13 +20,19 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
 SIZE 	= $(GCC_BIN)arm-none-eabi-size
 
 CPU = -mcpu=cortex-m0 -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m0 -mthumb -Wl,--gc-sections --specs=nano.specs
 LD_FLAGS += -Wl,-Map=$(PROJECT).map,--cref
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin $(PROJECT).hex size
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_lpc11u35_501.tmpl b/workspace_tools/export/gcc_arm_lpc11u35_501.tmpl
index f53771ade2..4bbc5e1a0d 100644
--- a/workspace_tools/export/gcc_arm_lpc11u35_501.tmpl
+++ b/workspace_tools/export/gcc_arm_lpc11u35_501.tmpl
@@ -20,13 +20,19 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
 SIZE 	= $(GCC_BIN)arm-none-eabi-size
 
 CPU = -mcpu=cortex-m0 -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m0 -mthumb -Wl,--gc-sections --specs=nano.specs
 LD_FLAGS += -Wl,-Map=$(PROJECT).map,--cref
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin $(PROJECT).hex size
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_lpc1768.tmpl b/workspace_tools/export/gcc_arm_lpc1768.tmpl
index df057ae3c5..5d38d5a164 100644
--- a/workspace_tools/export/gcc_arm_lpc1768.tmpl
+++ b/workspace_tools/export/gcc_arm_lpc1768.tmpl
@@ -18,12 +18,18 @@ LD      = $(GCC_BIN)arm-none-eabi-gcc
 OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 
 CPU = -mcpu=cortex-m3 -mthumb
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m3 -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_lpc4088.tmpl b/workspace_tools/export/gcc_arm_lpc4088.tmpl
index 4f40755f51..458a73381b 100644
--- a/workspace_tools/export/gcc_arm_lpc4088.tmpl
+++ b/workspace_tools/export/gcc_arm_lpc4088.tmpl
@@ -18,12 +18,18 @@ LD      = $(GCC_BIN)arm-none-eabi-gcc
 OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 
 CPU = -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=softfp
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS = -mcpu=cortex-m4 -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin
 
 clean:
diff --git a/workspace_tools/export/gcc_arm_stm32f407.tmpl b/workspace_tools/export/gcc_arm_stm32f407.tmpl
index d5aebbf48d..e7c442c372 100644
--- a/workspace_tools/export/gcc_arm_stm32f407.tmpl
+++ b/workspace_tools/export/gcc_arm_stm32f407.tmpl
@@ -20,13 +20,19 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
 SIZE 	= $(GCC_BIN)arm-none-eabi-size
 
 CPU = -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=softfp
-CC_FLAGS = $(CPU) -c -Os -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
+CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections 
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
 LD_FLAGS  = -mcpu=cortex-m4 -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_FLAGS += -Wl,-Map=$(PROJECT).map,--cref
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(DEBUG), 1)
+  CC_FLAGS += -DDEBUG -O0
+else
+  CC_FLAGS += -DNDEBUG -Os
+endif
+
 all: $(PROJECT).bin $(PROJECT).hex size
 
 clean: