Install the Build Tools

  1. To compile the ESP-IDFEspressif IoT Development Framework, obtain the necessary packages and follow the instructions on Espressif Systems. following the directions on https://docs.espressif.com/projects/esp-idf/en/stable/get-started/linux-setup.html. For Ubuntu, the commands are as follows:

sudo apt-get update

sudo apt-get install gcc git wget make libncurses-dev flex bison gperf python python-pip python-setuptools python-serial python-cryptography python-future

  1. Follow the instructions for Standard Setup of Toolchain for Linux from Espressif Systems to get the build tools (toolchain). For a 32-bit Linux, issue the following:

mkdir ~/esp

cd ~/esp

curl -O https://dl.espressif.com/dl/xtensa-esp32-elf-linux32-1.22.0-80-g6c4433a-5.2.0.tar.gz

tar xfz xtensa-esp32-*.tar.gz
  1. Find the toolchain in the ~/esp/xtensa-esp32-elf directory, and then under that add the bin directory to your PATH variable in your shell's profile (usually .bash_profile), as shown below:
PATH=$PATH:~/esp/xtensa-esp32-elf/bin
  1. Issue the following command to test the compiler:

xtensa-esp32-elf-cc -v

 

NOTE

The response to this command should be “gcc 5.2.0” preceded by other information. If you receive, "command not found", there is a problem. Re-check that you completed the steps (outlined above) correctly. If this does not resolve the problem, contact Espressif Systems for technical product support.

 

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