ESP32 Forum

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# Automatically download precompiled toolchain, unpack at /opt/xtensa-esp32-elf/
TOOLCHAIN_ZIP=xtensa-esp32-elf-win32-1.22.0-80-g6c4433a-5.2.0.zip
echo "Downloading precompiled toolchain ${TOOLCHAIN_ZIP}..."
cd ~
curl -LO --retry 10 http://dl.espressif.com/dl/${TOOLCHAIN_ZIP}
cd /opt
rm -rf /opt/xtensa-esp32-elf  # for upgrades
unzip ~/${TOOLCHAIN_ZIP}
rm ~/${TOOLCHAIN_ZIP}

cat > /etc/profile.d/esp32_toolchain.sh << EOF
# This file was created by ESP-IDF windows_install_prerequisites.sh
# and will be overwritten if that script is run again.
export PATH="/opt/xtensa-esp32-elf/bin:\$PATH"
EOF

# clean up pacman package cache to save some disk space
pacman --noconfirm -Scc

cat << EOF
************************************************
MSYS2 environment is now ready to use ESP-IDF.

1) Run 'source /etc/profile' to add the toolchain to
your path in this terminal. This command produces no output.
You only need to do this once, future terminals do this
automatically when opened.

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Toolchain path: /opt/xtensa-esp32-elf-new/bin/xtensa-esp32-elf-gcc
WARNING: Toolchain version is not supported: crosstool-ng-1.22.0-98-g4638c4f6
Expected to see version: crosstool-ng-1.22.0-80-g6c4433a
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.
Compiler version: 5.2.0
Python requirements from C:/msys32/home/jcsba/esp/esp-idf/requirements.txt are satisfied.
.
.
.
WARNING: Toolchain version is not supported: crosstool-ng-1.22.0-98-g4638c4f6
Expected to see version: crosstool-ng-1.22.0-80-g6c4433a
Please check ESP-IDF setup instructions and update the toolchain, or proceed at your own risk.

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export PATH="$PATH:/opt/xtensa-esp32-elf-new/bin"