compilation error using make

I am have the following error while compiling the code using PixhawkPSP. I am using Matlab 2017b and windows 10.

[110/695] Building CXX object src/modules/px4iofirmware/CM...Files/px4io-v2.dir/__/systemlib/mixer/mixer_simple.cpp.obj
FAILED: /usr/bin/arm-none-eabi-g++   -DCONFIG_ARCH_BOARD_PX4IO_V2 -D__DF_NUTTX -D__PX4_NUTTX -D__STDC_FORMAT_MACROS -I. -Isrc -Isrc/modules -I../src -I../src/drivers/boards/px4io-v2 -I../src/include -I../src/lib -I../src/lib/DriverFramework/framework/include -I../src/lib/matrix -I../src/modules -I../src/platforms -Ipx4io-v2/NuttX/nuttx/nuttx-export/include -Ipx4io-v2/NuttX/nuttx/nuttx-export/include/cxx -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/chip -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/common -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/armv7-m -Ipx4io-v2/NuttX/apps/include -Isrc/modules/systemlib/mixer -g -fno-exceptions -fno-rtti -std=gnu++11 -fno-threadsafe-statics -DCONFIG_WCHAR_BUILTIN -D__CUSTOM_FILE_IO__ -fcheck-new -Wall -Warray-bounds -Werror -Wextra -Wfatal-errors -Wfloat-equal -Wformat-security -Winit-self -Wmissing-declarations -Wpointer-arith -Wshadow -Wuninitialized -Wunused-variable -Wno-sign-compare -Wno-unused-parameter -Wunused-but-set-variable -Wformat=1 -Wdouble-promotion -Wno-missing-field-initializers -Wreorder -fvisibility=hidden -include visibility.h -mcpu=cortex-m3 -mthumb -march=armv7-m -nodefaultlibs -nostdlib -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -Os -DNDEBUG -MMD -MT src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/mixer/mixer_simple.cpp.obj -MF src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/mixer/mixer_simple.cpp.obj.d -o src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/mixer/mixer_simple.cpp.obj -c ../src/modules/systemlib/mixer/mixer_simple.cpp
In file included from px4io-v2/NuttX/nuttx/nuttx-export/include/math.h:52:0,
                 from ../src/modules/systemlib/mixer/mixer_simple.cpp:51:
px4io-v2/NuttX/nuttx/nuttx-export/include/arch/math.h:87:20: error: expected initializer before '_PARAMS'
 extern double atan _PARAMS((double));
                    ^~~~~~~
compilation terminated due to -Wfatal-errors.
[110/695] Building CXX object src/platforms/common/CMakeFiles/platforms__common.dir/shutdown.cpp.obj
FAILED: /usr/bin/arm-none-eabi-g++   -DBUILD_URI=localhost -DCONFIG_ARCH_BOARD_PX4FMU_V3 -DMODULE_NAME=\"platforms__common\" -D__DF_NUTTX -D__PX4_NUTTX -D__STDC_FORMAT_MACROS -I. -Isrc -Isrc/modules -I../src -I../src/drivers/boards/px4fmu-v3 -I../src/include -I../src/lib -I../src/lib/DriverFramework/framework/include -I../src/lib/matrix -I../src/modules -I../src/platforms -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/include -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/include/cxx -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/arch/chip -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/arch/common -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/arch/armv7-m -Ipx4fmu-v3/NuttX/apps/include -Iexternal/Install/include -g -fno-exceptions -fno-rtti -std=gnu++11 -fno-threadsafe-statics -DCONFIG_WCHAR_BUILTIN -D__CUSTOM_FILE_IO__ -fcheck-new -Wall -Warray-bounds -Werror -Wextra -Wfatal-errors -Wfloat-equal -Wformat-security -Winit-self -Wmissing-declarations -Wpointer-arith -Wshadow -Wuninitialized -Wunused-variable -Wno-sign-compare -Wno-unused-parameter -Wunused-but-set-variable -Wformat=1 -Wdouble-promotion -Wno-missing-field-initializers -Wreorder -fvisibility=hidden -include visibility.h -mcpu=cortex-m4 -mthumb -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard -nodefaultlibs -nostdlib -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -Os -DNDEBUG   -Wframe-larger-than=1024 -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -MMD -MT src/platforms/common/CMakeFiles/platforms__common.dir/shutdown.cpp.obj -MF src/platforms/common/CMakeFiles/platforms__common.dir/shutdown.cpp.obj.d -o src/platforms/common/CMakeFiles/platforms__common.dir/shutdown.cpp.obj -c ../src/platforms/common/shutdown.cpp
In file included from px4fmu-v3/NuttX/nuttx/nuttx-export/include/math.h:52:0,
                 from px4fmu-v3/NuttX/nuttx/nuttx-export/include/cxx/cmath:46,
                 from ../src/platforms/px4_defines.h:67,
                 from ../src/platforms/px4_log.h:136,
                 from ../src/platforms/common/shutdown.cpp:40:
px4fmu-v3/NuttX/nuttx/nuttx-export/include/arch/math.h:87:20: error: expected initializer before '_PARAMS'
 extern double atan _PARAMS((double));
                    ^~~~~~~
compilation terminated due to -Wfatal-errors.
[110/695] Building C object src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/perf_counter.c.obj
FAILED: /usr/bin/arm-none-eabi-gcc  -DCONFIG_ARCH_BOARD_PX4IO_V2 -D__DF_NUTTX -D__PX4_NUTTX -D__STDC_FORMAT_MACROS -I. -Isrc -Isrc/modules -I../src -I../src/drivers/boards/px4io-v2 -I../src/include -I../src/lib -I../src/lib/DriverFramework/framework/include -I../src/lib/matrix -I../src/modules -I../src/platforms -Ipx4io-v2/NuttX/nuttx/nuttx-export/include -Ipx4io-v2/NuttX/nuttx/nuttx-export/include/cxx -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/chip -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/common -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/armv7-m -Ipx4io-v2/NuttX/apps/include -Isrc/modules/systemlib/mixer -g -std=gnu99 -fno-common -Wall -Warray-bounds -Werror -Wextra -Wfatal-errors -Wfloat-equal -Wformat-security -Winit-self -Wmissing-declarations -Wpointer-arith -Wshadow -Wuninitialized -Wunused-variable -Wno-sign-compare -Wno-unused-parameter -Wunused-but-set-variable -Wformat=1 -Wdouble-promotion -Wbad-function-cast -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -fvisibility=hidden -include visibility.h -mcpu=cortex-m3 -mthumb -march=armv7-m -nodefaultlibs -nostdlib -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -Os -DNDEBUG -MMD -MT src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/perf_counter.c.obj -MF src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/perf_counter.c.obj.d -o src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/perf_counter.c.obj   -c ../src/modules/systemlib/perf_counter.c
In file included from px4io-v2/NuttX/nuttx/nuttx-export/include/math.h:52:0,
                 from ../src/modules/systemlib/perf_counter.c:45:
px4io-v2/NuttX/nuttx/nuttx-export/include/arch/math.h:87:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before '_PARAMS'
 extern double atan _PARAMS((double));
                    ^~~~~~~
compilation terminated due to -Wfatal-errors.
ninja: build stopped: subcommand failed.
Makefile:164: recipe for target 'px4fmu-v3_default' failed
make: *** [px4fmu-v3_default] Error 1

C:\WINDOWS\system32>bash
gdd@DESKTOP-0C9MNBU:/mnt/c/Windows/System32$ cd ..
gdd@DESKTOP-0C9MNBU:/mnt/c/Windows$ cd ..
gdd@DESKTOP-0C9MNBU:/mnt/c$ cd PX4/
gdd@DESKTOP-0C9MNBU:/mnt/c/PX4$ cd Firmware/
gdd@DESKTOP-0C9MNBU:/mnt/c/PX4/Firmware$ cmake px4fmu-v3_default
CMake Error: The source directory "/mnt/c/PX4/Firmware/px4fmu-v3_default" does not exist.
Specify --help for usage, or press the help button on the CMake GUI.
gdd@DESKTOP-0C9MNBU:/mnt/c/PX4/Firmware$ sudo cmake px4fmu-v3_default
[sudo] password for gdd:
CMake Error: The source directory "/mnt/c/PX4/Firmware/px4fmu-v3_default" does not exist.
Specify --help for usage, or press the help button on the CMake GUI.
gdd@DESKTOP-0C9MNBU:/mnt/c/PX4/Firmware$ sudo cmake px4fmu-v3_default
CMake Error: The source directory "/mnt/c/PX4/Firmware/px4fmu-v3_default" does not exist.
Specify --help for usage, or press the help button on the CMake GUI.
gdd@DESKTOP-0C9MNBU:/mnt/c/PX4/Firmware$ ls
build_px4fmu-v3_default  CTestConfig.cmake  Firmware.sublime-project  Makefile  nuttx-configs  ROMFS
circle.yml               Debug              Images                    mavlink   nuttx-patches  src
cmake                    Documentation      integrationtests          misc      package.xml    test_data
CMakeLists.txt           eclipse.cproject   launch                    msg       posix-configs  Tools
CONTRIBUTING.md          eclipse.project    LICENSE.md                NuttX     README.md      Vagrantfile
gdd@DESKTOP-0C9MNBU:/mnt/c/PX4/Firmware$ sudo cmake px4fmu-v3_default
CMake Error: The source directory "/mnt/c/PX4/Firmware/px4fmu-v3_default" does not exist.
Specify --help for usage, or press the help button on the CMake GUI.
gdd@DESKTOP-0C9MNBU:/mnt/c/PX4/Firmware$ sudo make px4fmu-v3_default
[6/588] Building C object src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/pwm_limit/pwm_limit.c.obj
FAILED: /usr/bin/arm-none-eabi-gcc  -DCONFIG_ARCH_BOARD_PX4IO_V2 -D__DF_NUTTX -D__PX4_NUTTX -D__STDC_FORMAT_MACROS -I. -Isrc -Isrc/modules -I../src -I../src/drivers/boards/px4io-v2 -I../src/include -I../src/lib -I../src/lib/DriverFramework/framework/include -I../src/lib/matrix -I../src/modules -I../src/platforms -Ipx4io-v2/NuttX/nuttx/nuttx-export/include -Ipx4io-v2/NuttX/nuttx/nuttx-export/include/cxx -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/chip -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/common -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/armv7-m -Ipx4io-v2/NuttX/apps/include -Isrc/modules/systemlib/mixer -g -std=gnu99 -fno-common -Wall -Warray-bounds -Werror -Wextra -Wfatal-errors -Wfloat-equal -Wformat-security -Winit-self -Wmissing-declarations -Wpointer-arith -Wshadow -Wuninitialized -Wunused-variable -Wno-sign-compare -Wno-unused-parameter -Wunused-but-set-variable -Wformat=1 -Wdouble-promotion -Wbad-function-cast -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -fvisibility=hidden -include visibility.h -mcpu=cortex-m3 -mthumb -march=armv7-m -nodefaultlibs -nostdlib -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -Os -DNDEBUG -MMD -MT src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/pwm_limit/pwm_limit.c.obj -MF src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/pwm_limit/pwm_limit.c.obj.d -o src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/pwm_limit/pwm_limit.c.obj   -c ../src/modules/systemlib/pwm_limit/pwm_limit.c
In file included from px4io-v2/NuttX/nuttx/nuttx-export/include/math.h:52:0,
                 from ../src/modules/systemlib/pwm_limit/pwm_limit.c:44:
px4io-v2/NuttX/nuttx/nuttx-export/include/arch/math.h:87:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before '_PARAMS'
 extern double atan _PARAMS((double));
                    ^~~~~~~
compilation terminated due to -Wfatal-errors.
[6/588] Building C object src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/perf_counter.c.obj
FAILED: /usr/bin/arm-none-eabi-gcc  -DCONFIG_ARCH_BOARD_PX4IO_V2 -D__DF_NUTTX -D__PX4_NUTTX -D__STDC_FORMAT_MACROS -I. -Isrc -Isrc/modules -I../src -I../src/drivers/boards/px4io-v2 -I../src/include -I../src/lib -I../src/lib/DriverFramework/framework/include -I../src/lib/matrix -I../src/modules -I../src/platforms -Ipx4io-v2/NuttX/nuttx/nuttx-export/include -Ipx4io-v2/NuttX/nuttx/nuttx-export/include/cxx -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/chip -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/common -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/armv7-m -Ipx4io-v2/NuttX/apps/include -Isrc/modules/systemlib/mixer -g -std=gnu99 -fno-common -Wall -Warray-bounds -Werror -Wextra -Wfatal-errors -Wfloat-equal -Wformat-security -Winit-self -Wmissing-declarations -Wpointer-arith -Wshadow -Wuninitialized -Wunused-variable -Wno-sign-compare -Wno-unused-parameter -Wunused-but-set-variable -Wformat=1 -Wdouble-promotion -Wbad-function-cast -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -fvisibility=hidden -include visibility.h -mcpu=cortex-m3 -mthumb -march=armv7-m -nodefaultlibs -nostdlib -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -Os -DNDEBUG -MMD -MT src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/perf_counter.c.obj -MF src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/perf_counter.c.obj.d -o src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/perf_counter.c.obj   -c ../src/modules/systemlib/perf_counter.c
In file included from px4io-v2/NuttX/nuttx/nuttx-export/include/math.h:52:0,
                 from ../src/modules/systemlib/perf_counter.c:45:
px4io-v2/NuttX/nuttx/nuttx-export/include/arch/math.h:87:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before '_PARAMS'
 extern double atan _PARAMS((double));
                    ^~~~~~~
compilation terminated due to -Wfatal-errors.
[6/588] Building CXX object src/platforms/common/CMakeFiles/platforms__common.dir/shutdown.cpp.obj
FAILED: /usr/bin/arm-none-eabi-g++   -DBUILD_URI=localhost -DCONFIG_ARCH_BOARD_PX4FMU_V3 -DMODULE_NAME=\"platforms__common\" -D__DF_NUTTX -D__PX4_NUTTX -D__STDC_FORMAT_MACROS -I. -Isrc -Isrc/modules -I../src -I../src/drivers/boards/px4fmu-v3 -I../src/include -I../src/lib -I../src/lib/DriverFramework/framework/include -I../src/lib/matrix -I../src/modules -I../src/platforms -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/include -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/include/cxx -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/arch/chip -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/arch/common -Ipx4fmu-v3/NuttX/nuttx/nuttx-export/arch/armv7-m -Ipx4fmu-v3/NuttX/apps/include -Iexternal/Install/include -g -fno-exceptions -fno-rtti -std=gnu++11 -fno-threadsafe-statics -DCONFIG_WCHAR_BUILTIN -D__CUSTOM_FILE_IO__ -fcheck-new -Wall -Warray-bounds -Werror -Wextra -Wfatal-errors -Wfloat-equal -Wformat-security -Winit-self -Wmissing-declarations -Wpointer-arith -Wshadow -Wuninitialized -Wunused-variable -Wno-sign-compare -Wno-unused-parameter -Wunused-but-set-variable -Wformat=1 -Wdouble-promotion -Wno-missing-field-initializers -Wreorder -fvisibility=hidden -include visibility.h -mcpu=cortex-m4 -mthumb -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard -nodefaultlibs -nostdlib -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -Os -DNDEBUG   -Wframe-larger-than=1024 -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -MMD -MT src/platforms/common/CMakeFiles/platforms__common.dir/shutdown.cpp.obj -MF src/platforms/common/CMakeFiles/platforms__common.dir/shutdown.cpp.obj.d -o src/platforms/common/CMakeFiles/platforms__common.dir/shutdown.cpp.obj -c ../src/platforms/common/shutdown.cpp
In file included from px4fmu-v3/NuttX/nuttx/nuttx-export/include/math.h:52:0,
                 from px4fmu-v3/NuttX/nuttx/nuttx-export/include/cxx/cmath:46,
                 from ../src/platforms/px4_defines.h:67,
                 from ../src/platforms/px4_log.h:136,
                 from ../src/platforms/common/shutdown.cpp:40:
px4fmu-v3/NuttX/nuttx/nuttx-export/include/arch/math.h:87:20: error: expected initializer before '_PARAMS'
 extern double atan _PARAMS((double));
                    ^~~~~~~
compilation terminated due to -Wfatal-errors.
[6/588] Building CXX object src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/mixer/mixer_simple.cpp.obj
FAILED: /usr/bin/arm-none-eabi-g++   -DCONFIG_ARCH_BOARD_PX4IO_V2 -D__DF_NUTTX -D__PX4_NUTTX -D__STDC_FORMAT_MACROS -I. -Isrc -Isrc/modules -I../src -I../src/drivers/boards/px4io-v2 -I../src/include -I../src/lib -I../src/lib/DriverFramework/framework/include -I../src/lib/matrix -I../src/modules -I../src/platforms -Ipx4io-v2/NuttX/nuttx/nuttx-export/include -Ipx4io-v2/NuttX/nuttx/nuttx-export/include/cxx -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/chip -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/common -Ipx4io-v2/NuttX/nuttx/nuttx-export/arch/armv7-m -Ipx4io-v2/NuttX/apps/include -Isrc/modules/systemlib/mixer -g -fno-exceptions -fno-rtti -std=gnu++11 -fno-threadsafe-statics -DCONFIG_WCHAR_BUILTIN -D__CUSTOM_FILE_IO__ -fcheck-new -Wall -Warray-bounds -Werror -Wextra -Wfatal-errors -Wfloat-equal -Wformat-security -Winit-self -Wmissing-declarations -Wpointer-arith -Wshadow -Wuninitialized -Wunused-variable -Wno-sign-compare -Wno-unused-parameter -Wunused-but-set-variable -Wformat=1 -Wdouble-promotion -Wno-missing-field-initializers -Wreorder -fvisibility=hidden -include visibility.h -mcpu=cortex-m3 -mthumb -march=armv7-m -nodefaultlibs -nostdlib -fno-strict-aliasing -fomit-frame-pointer -funsafe-math-optimizations -ffunction-sections -fdata-sections -fno-strength-reduce -fno-builtin-printf -Os -DNDEBUG -MMD -MT src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/mixer/mixer_simple.cpp.obj -MF src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/mixer/mixer_simple.cpp.obj.d -o src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/__/systemlib/mixer/mixer_simple.cpp.obj -c ../src/modules/systemlib/mixer/mixer_simple.cpp
In file included from px4io-v2/NuttX/nuttx/nuttx-export/include/math.h:52:0,
                 from ../src/modules/systemlib/mixer/mixer_simple.cpp:51:
px4io-v2/NuttX/nuttx/nuttx-export/include/arch/math.h:87:20: error: expected initializer before '_PARAMS'
 extern double atan _PARAMS((double));
                    ^~~~~~~
compilation terminated due to -Wfatal-errors.
[6/588] Building C object src/modules/px4iofirmware/CMakeFiles/px4io-v2.dir/adc.c.obj
ninja: build stopped: subcommand failed.
Makefile:164: recipe for target 'px4fmu-v3_default' failed
make: *** [px4fmu-v3_default] Error 1

[Geoff Hayes]

Dinesh - have you read https://github.com/PX4/Firmware/issues/9863 which seems to discuss the same compile error that you are observing error: expected initializer before '_PARAMS' extern double atan PARAMS((double));?

[Dinesh]

Thanx Geoff,

I tried those methods given in the link. in short the link tells to update GCC. I did that. But i got new a error which is given below. If u come across any solution kindly forward me.

sudo make px4fmu-v3_default
-- CMAKE_MODULE_PATH: /mnt/c/PX4/Firmware/cmake
-- Nuttx build for px4fmu-v3 on m4 hardware, using nsh with ROMFS on px4fmu_common
-- Build Type: MinSizeRel
-- PX4 VERSION: PixhawkPSP_v3.0.3
-- CONFIG: nuttx-px4fmu-v3-default
-- The ASM compiler identification is GNU
-- Found assembler: /usr/bin/arm-none-eabi-gcc
-- Found PythonInterp: /usr/bin/python (found version "2.7.12")
-- Found PY_jinja2: /usr/local/lib/python2.7/dist-packages/jinja2
-- C compiler: arm-none-eabi-gcc (GNU Tools for Arm Embedded Processors 7-2018-q3-update) 7.3.1 20180622 (release) [ARM/embedded-7-branch revision 261907]
-- C++ compiler: arm-none-eabi-g++ (GNU Tools for Arm Embedded Processors 7-2018-q3-update) 7.3.1 20180622 (release) [ARM/embedded-7-branch revision 261907]
-- Using C++03
-- Release build type: MinSizeRel
-- Adding UAVCAN STM32 platform driver
-- Adding ROMFS on px4fmu-v3
-- Nuttx build for px4fmu-v3 on m3 hardware, using nsh
-- Configuring done
-- Generating done
-- Build files have been written to: /mnt/c/PX4/Firmware/build_px4fmu-v3_default
[74/767] Building NuttX for px4io-v2 with nsh
FAILED: cd /mnt/c/PX4/Firmware/build_px4fmu-v3_default/px4io-v2 && /bin/rm -rf /mnt/c/PX4/Firmware/build_px4fmu-v3_default/px4io-v2/NuttX/nuttx/nuttx-export && /usr/bin/make --quiet --no-print-directory -C /mnt/c/PX4/Firmware/build_px4fmu-v3_default/px4io-v2/NuttX/nuttx -r CONFIG_ARCH_BOARD=px4io-v2 export >nuttx_build.log && cmake -E touch /mnt/c/PX4/Firmware/build_px4fmu-v3_default/px4io-v2/nuttx_export.stamp
stdio/lib_sscanf.c: In function 'vsscanf':
stdio/lib_sscanf.c:419:28: error: this statement may fall through [-Werror=implicit-fallthrough=]
sign = true;
^
stdio/lib_sscanf.c:420:21: note: here
case 'u':
^~~~
cc1: all warnings being treated as errors
make[2]: *** [bin/lib_sscanf.o] Error 1
make[1]: *** [libc/libc.a] Error 2

[Image Analyst]

You listed your product as the MATLAB and Simulink Student Suite. I don't believe that product allows compilation.

[Walter Roberson]

You will need to reconfigure so that warnings are not treated as errors. The code at that location has

case 'd': sign = true;

/* FALLTHROUGH */

case 'u': base = 10; break;

which is valid C, even if it could be better written.

Answer 1

[Dinesh]

I tried make -i and make -k, but not working can you tell me how to suppress warnings

[Walter Roberson]

Something in your compilation chain is compiling with

-Werror=implicit-fallthrough=

You need to either remove that or else add

-Wno-error=implicit-fallthrough=

(I do not know what would happen if both appear on the same command line.)