ESP32 Forum

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$ idf.py -p /dev/ttyUSB0 flash
Checking Python dependencies...
Python requirements from /home/martin/esp/esp-idf/requirements.txt are satisfied.
Adding flash's dependency "all" to list of actions
Executing action: all (aliases: build)
Running cmake in directory /home/martin/esp/esp-idf/examples/get-started/blink/build
Executing "cmake -G Ninja -DPYTHON_DEPS_CHECKED=1 -DESP_PLATFORM=1 --warn-uninitialized /home/martin/esp/esp-idf/examples/get-started/blink"...
Warn about uninitialized values.
-- Found Git: /usr/bin/git (found version "2.17.1") 
-- IDF_TARGET not set, using default target: esp32
-- ccache will be used for faster builds
-- The C compiler identification is GNU 5.2.0
-- The CXX compiler identification is GNU 5.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/martin/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
-- Check for working C compiler: /home/martin/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
-- Check for working C compiler: /home/martin/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /home/martin/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++

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rm -rf sdkconfig build
idf.py -D IDF_TARGET=esp32s2beta menuconfig
idf.py build

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idf.py -D IDF_TARGET=esp32s2beta menuconfig

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idf.py -p PORT -b BAUD flash monitor

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xtensa-esp32s2-elf-gcc -v

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xtensa-esp32s2-elf-gcc --h

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$ xtensa-esp32s2-elf-gcc --h
Usage: xtensa-esp32s2-elf-gcc.exe [options] file...
Options:
  -pass-exit-codes         Exit with highest error code from a phase.
  --help                   Display this information.
  --target-help            Display target specific command line options.
  --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].
                           Display specific types of command line options.
  (Use '-v --help' to display command line options of sub-processes).
  --version                Display compiler version information.
  -dumpspecs               Display all of the built in spec strings.
  -dumpversion             Display the version of the compiler.
  -dumpmachine             Display the compiler's target processor.
  -print-search-dirs       Display the directories in the compiler's search path.
  -print-libgcc-file-name  Display the name of the compiler's companion library.
  -print-file-name=<lib>   Display the full path to library <lib>.
  -print-prog-name=<prog>  Display the full path to compiler component <prog>.
  -print-multiarch         Display the target's normalized GNU triplet, used as
                           a component in the library path.
  -print-multi-directory   Display the root directory for versions of libgcc.
  -print-multi-lib         Display the mapping between command line options and
                           multiple library search directories.
  -print-multi-os-directory Display the relative path to OS libraries.
  -print-sysroot           Display the target libraries directory.
  -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.
  -Wa,<options>            Pass comma-separated <options> on to the assembler.
  -Wp,<options>            Pass comma-separated <options> on to the preprocessor.
  -Wl,<options>            Pass comma-separated <options> on to the linker.
  -Xassembler <arg>        Pass <arg> on to the assembler.
  -Xpreprocessor <arg>     Pass <arg> on to the preprocessor.
  -Xlinker <arg>           Pass <arg> on to the linker.
  -save-temps              Do not delete intermediate files.
  -save-temps=<arg>        Do not delete intermediate files.
  -no-canonical-prefixes   Do not canonicalize paths when building relative
                           prefixes to other gcc components.
  -pipe                    Use pipes rather than intermediate files.
  -time                    Time the execution of each subprocess.
  -specs=<file>            Override built-in specs with the contents of <file>.
  -std=<standard>          Assume that the input sources are for <standard>.
  --sysroot=<directory>    Use <directory> as the root directory for headers
                           and libraries.
  -B <directory>           Add <directory> to the compiler's search paths.
  -v                       Display the programs invoked by the compiler.
  -###                     Like -v but options quoted and commands not executed.
  -E                       Preprocess only; do not compile, assemble or link.
  -S                       Compile only; do not assemble or link.
  -c                       Compile and assemble, but do not link.
  -o <file>                Place the output into <file>.
  -pie                     Create a dynamically linked position independent
                           executable.
  -shared                  Create a shared library.
  -x <language>            Specify the language of the following input files.
                           Permissible languages include: c c++ assembler none
                           'none' means revert to the default behavior of
                           guessing the language based on the file's extension.

Options starting with -g, -f, -m, -O, -W, or --param are automatically
 passed on to the various sub-processes invoked by xtensa-esp32s2-elf-gcc.exe.  In order to pass
 other options on to these processes the -W<letter> options must be used.

For bug reporting instructions, please see:
<https://gcc.gnu.org/bugs/>.

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xtensa-esp32s2-elf-gcc --version

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 xtensa-esp32s2-elf-gcc --version
xtensa-esp32s2-elf-gcc.exe (crosstool-NG esp32s2-dev-XXXXXXXXXXX) XXXX
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.