Micropython esp-open-sdk build esp toolchain esp8266 espressif ubuntu 20.04

Micropython esp-open-sdk build esp toolchain esp8266 espressif ubuntu 20.04.md

Micropython esp-open-sdk build esp toolchain esp8266 espressif ubuntu 20.04

• https://docs.micropython.org/en/latest/develop/gettingstarted.html

• https://docs.espressif.com/projects/esp-idf/en/release-v3.0/get-started/linux-setup.html

• Ubuntu 20.04

• You'll need at least 5GB free space

• Build time approx: 30 mins with 4 cores i7-4770

Get sources

git clone https://github.com/micropython/micropython
git clone --recursive https://github.com/pfalcon/esp-open-sdk

Packages

sudo apt-get -y install python2 python2.7-dev make autoconf build-essential net-tools htop git wget gperf bison binutils-doc cpp-doc gcc-9-locales debian-keyring g++-multilib g++-9-multilib gcc-9-doc gcc-multilib libtool flex bison gdb gcc-doc gcc-9-multilib glibc-doc bzr libstdc++-9-doc texinfo help2man libtool libtool-bin libtool-doc libncurses-dev

Apply diff to fix bash version check

--- crosstool-NG/configure.ac	2021-08-25 19:51:42.124229514 +0000
+++ crosstool-NG/configure.ac-good	2021-08-25 19:59:30.942518084 +0000
@@ -190,7 +190,7 @@
 AC_CACHE_CHECK([for bash >= 3.1], [ac_cv_path__BASH],
     [AC_PATH_PROGS_FEATURE_CHECK([_BASH], [bash],
         [[_BASH_ver=$($ac_path__BASH --version 2>&1 \
-                     |$EGREP '^GNU bash, version (3\.[1-9]|4)')
+                     |$EGREP '^GNU bash, version ([0-9\.]+)')
           test -n "$_BASH_ver" && ac_cv_path__BASH=$ac_path__BASH ac_path__BASH_found=:]],
         [AC_MSG_RESULT([no])
          AC_MSG_ERROR([could not find bash >= 3.1])])])

remove --dry-run to patch

user@espbuilder:~/build/esp-open-sdk# patch --dry-run -p0 < bashfix.patch 

fix missing "expat 2.1.0".

wget "https://sourceforge.net/projects/expat/files/expat/2.1.0/expat-2.1.0-RENAMED-VULNERABLE-PLEASE-USE-2.3.0-INSTEAD.tar.gz/download" -O "expat-2.1.0.tar.gz"

# extract it from "tar.gz"
tar -xzf "expat-2.1.0.tar.gz"

# rebuild archive but as "tar.xz"
tar -cJf expat-2.1.0.tar.xz expat-2.1.0

# copy the "expat-2.1.0.tar.xz" to the proper location
mkdir -p crosstool-NG/.build/tarballs/
cp expat-2.1.0.tar.xz crosstool-NG/.build/tarballs/

# You might need to clean up before re-running make
rm -Rfv crosstool-NG/.build/src/expat-2.1.0 crosstool-NG/.build/src/.expat-2.1.0.extracting

temp swap Python to version 2

# https://github.com/pfalcon/esp-open-sdk/issues/339
cd /usr/bin/
sudo ln -sf python2 python

Build it

make # -j4

tail the build log

user1@espbuilder:~/esp-open-sdk$ tail -f crosstool-NG/build.log

After successful build, swap it back to version 3

# https://github.com/pfalcon/esp-open-sdk/issues/339
cd /usr/bin/
sudo ln -sf python3 python

...

make[4]: Leaving directory '/home/user1/esp-open-sdk/lx106-hal'
make[3]: Leaving directory '/home/user1/esp-open-sdk/lx106-hal'
make[2]: Leaving directory '/home/user1/esp-open-sdk/lx106-hal'
make[1]: Leaving directory '/home/user1/esp-open-sdk/lx106-hal'

Xtensa toolchain is built, to use it:

export PATH=/home/user1/esp-open-sdk/xtensa-lx106-elf/bin:$PATH

Espressif ESP8266 SDK is installed, its libraries and headers are merged with the toolchain

user1@espbuilder:~/esp-open-sdk$ 

Build micropython esp8266

wget https://bootstrap.pypa.io/pip/2.7/get-pip.py
python2.7 get-pip.py
pip2 install pyserial

# Get micropython source
git clone --recursive https://github.com/micropython/micropython
cd micropython

cd ports/esp8266

export PATH=/home/user1/esp-open-sdk/xtensa-lx106-elf/bin:$PATH

make -j 4

user1@espbuilder:~/micropython/ports/esp8266$ make -j 4
Use make V=1 or set BUILD_VERBOSE in your environment to increase build verbosity.
Create build-GENERIC/firmware-combined.bin
esptool.py v1.2
flash     32848
 .text    30720 at 0x40100000
 .data    1012 at 0x3ffe8000
 .rodata  1080 at 0x3ffe8400
padding   4016
irom0text 589736
total     626600
md5       e400e4b47b695a9bb60a31af10a2c959