I got a bit curios about nuttx so I tried compiling it to run with qemu

Some more info. https://acassis.wordpress.com/2018/01/04/running-nuttx-on-esp32-board/

git clone https://bitbucket.org/nuttx/tools

cd tools/kconfig-frontends/

./configure --enable-mconf --enable-nconf --disable-gconf --disable-qconf

git clone https://bitbucket.org/nuttx/nuttx.git nuttx

Build nsh

./tools/configure.sh esp32-core/nsh

#Try to enable debug symbols also

cd tools

//./configure.sh esp32-core/nsh ./configure.sh esp32-core/smp cd - make oldconfig . ./setenv.sh make

Before sourcing the setenv.sh file above, you should examine it and perform edits as necessary so that TOOLCHAIN_BIN is the correct path to the directory than holds your toolchain binaries.

Only got this output. make[1]: Leaving directory /home/olas/nuttx/configs' make: the -C' option requires a non-empty string argument Usage: make [options] [target] ...

See configs/esp32-core/README.txt for further instructions

cd .. git clone https://bitbucket.org/nuttx/apps.git cd nuttx Added, CONFIG_APPS_DIR = ../apps to Makefile.unix

/home/olas/esp/esp-idf/components/esptool_py/esptool/esptool.py --chip esp32 elf2image --flash_mode dio --flash_size 4MB -o ./nuttx2.bin nuttx