MOST IMPORTANT: create the right default config file

• make defconfig Then adapt the config file to your wifi/BT/I2C device (can alos be done on the command line)
• make menuconfig Then
• make -j4
• make flash monitor

Additional misc notes

• for all libraries, add -mlongcalls
• libmad, libflac (no esp's version), libvorbis (tremor - not esp's version), alac work
• libfaad does not really support real time, but if you want to try
  • -O3 -DFIXED_POINT -DSMALL_STACK
  • change ac_link in configure and case ac_files, remove ''
  • compiler but in cfft.c and cffti1, must disable optimization using #pragma GCC push_options #pragma GCC optimize ("O0") #pragma GCC pop_options
• better use helixacc
• set IDF_PATH=/home/esp-idf
• set ESPPORT=COM9
• update flash partition size