Merge pull request arduino#95 from bcmi-labs/disable-nano-specs

C33: disable nano.specs
Former-commit-id: 20cb100

Author: facchinm

boards.txt

@@ -77,7 +77,7 @@ minima.compiler.fsp.cxxflags=-mthumb "@{compiler.fsp.defines}"
 minima.compiler.tinyusb.cflags=-DCFG_TUSB_MCU=OPT_MCU_RAXXX
 minima.compiler.tinyusb.cxxflags=-DCFG_TUSB_MCU=OPT_MCU_RAXXX
 minima.compiler.fsp.includes={build.variant.path}/includes.txt
-minima.compiler.fsp.extra_ldflags=-lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
+minima.compiler.fsp.extra_ldflags=--specs=nano.specs -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 minima.compiler.fsp="{build.variant.path}/libs/libfsp.a"
 
 minima.upload.tool=dfu-util
@@ -125,7 +125,7 @@ unor4wifi.compiler.fsp.cxxflags=-mthumb "@{compiler.fsp.defines}"
 unor4wifi.compiler.tinyusb.cflags=-DCFG_TUSB_MCU=OPT_MCU_RAXXX
 unor4wifi.compiler.tinyusb.cxxflags=-DCFG_TUSB_MCU=OPT_MCU_RAXXX
 unor4wifi.compiler.fsp.includes={build.variant.path}/includes.txt
-unor4wifi.compiler.fsp.extra_ldflags=-lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
+unor4wifi.compiler.fsp.extra_ldflags=--specs=nano.specs -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 unor4wifi.compiler.fsp="{build.variant.path}/libs/libfsp.a"
 
 unor4wifi.upload.tool=bossac
@@ -171,7 +171,7 @@ muxto.compiler.fsp.cxxflags=-mthumb -D_RA_CORE=CM23 -D_RENESAS_RA_
 muxto.compiler.tinyusb.cflags=-DCFG_TUSB_MCU=OPT_MCU_RAXXX
 muxto.compiler.tinyusb.cxxflags=-DCFG_TUSB_MCU=OPT_MCU_RAXXX
 muxto.compiler.fsp.includes={build.variant.path}/includes.txt
-muxto.compiler.fsp.extra_ldflags=-lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
+muxto.compiler.fsp.extra_ldflags=--specs=nano.specs -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 muxto.compiler.fsp="{build.variant.path}/libs/libfsp.a"
 
 muxto.upload.tool=dfu-util

cores/arduino/main.cpp

@@ -134,3 +134,12 @@ extern "C" {
 
 //Declared weak in Arduino.h to allow user redefinitions.
 int atexit(void (*func)()) { return 0; }
+
+namespace __gnu_cxx {
+   void __verbose_terminate_handler() { }
+}
+extern "C" __attribute__((weak)) void __cxa_pure_virtual(void);
+extern "C" __attribute__((weak)) void __cxa_pure_virtual(void)
+{
+   exit(1);
+}

platform.txt

@@ -16,13 +16,13 @@ compiler.warning_flags.all=-Wall -Wextra
 
 compiler.path={build.compiler_path}
 compiler.c.cmd={build.crossprefix}gcc
-compiler.c.flags=-c {compiler.warning_flags} -Os -g3 --specs=nano.specs -nostdlib {build.defines} -MMD -std=gnu11 -mcpu={build.mcu} {build.float-abi} {build.fpu} -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fmessage-length=0 -fno-builtin
+compiler.c.flags=-c {compiler.warning_flags} -Os -g3 -nostdlib {build.defines} -MMD -std=gnu11 -mcpu={build.mcu} {build.float-abi} {build.fpu} -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fmessage-length=0 -fno-builtin
 compiler.c.elf.cmd={build.crossprefix}g++
-compiler.c.elf.flags=-Wl,--gc-sections --specs=nano.specs --specs=nosys.specs {compiler.warning_flags} -mcpu={build.mcu} {build.float-abi} {build.fpu}
+compiler.c.elf.flags=-Wl,--gc-sections --specs=nosys.specs {compiler.warning_flags} -mcpu={build.mcu} {build.float-abi} {build.fpu}
 compiler.S.cmd={build.crossprefix}g++
 compiler.S.flags=-c -g -x assembler-with-cpp -Os -mcpu={build.mcu} {build.float-abi} {build.fpu} -fsigned-char -ffunction-sections -fdata-sections
 compiler.cpp.cmd={build.crossprefix}g++
-compiler.cpp.flags=-c {compiler.warning_flags} -Os --specs=nano.specs -g3 -fno-use-cxa-atexit -fno-rtti -fno-exceptions -MMD -nostdlib {build.defines} -MMD -std=gnu++17 -mcpu={build.mcu} {build.float-abi} {build.fpu} -fsigned-char -ffunction-sections -fdata-sections -fmessage-length=0 -fno-builtin
+compiler.cpp.flags=-c {compiler.warning_flags} -Os -g3 -fno-use-cxa-atexit -fno-rtti -fno-exceptions -MMD -nostdlib {build.defines} -MMD -std=gnu++17 -mcpu={build.mcu} {build.float-abi} {build.fpu} -fsigned-char -ffunction-sections -fdata-sections -fmessage-length=0 -fno-builtin
 compiler.ar.cmd={build.crossprefix}ar
 compiler.ar.flags=rcs
 compiler.ar.extra_flags=