not able to compile a simple test program. hello_world example (IDFGH-6562)

[rrobinet]

Environment
pi@raspberrypi:~ $ uname -a
Linux raspberrypi 5.10.63-v7+ #1459 SMP Wed Oct 6 16:41:10 BST 2021 armv7l GNU/Linux
Hardware : BCM2835
Revision : a01041
Serial : 00000000a5c2ff6d
Model : Raspberry Pi 2 Model B Rev 1.1
Issue

pi@raspberrypi:~/esp $ cp -r $IDF_PATH/examples/get-started/hello_world
pi@raspberrypi:~/esp $ cd  hello_world
pi@raspberrypi:~/esp/hello_world $ idf.py set-target esp32

Message:
Adding "set-target"'s dependency "fullclean" to list of commands with default set of options.
Executing action: fullclean
Build directory '/home/pi/esp/hello_world/build' not found. Nothing to clean.
Executing action: set-target
Set Target to: esp32, new sdkconfig created. Existing sdkconfig renamed to sdkconfig.old.
Running cmake in directory /home/pi/esp/hello_world/build
Executing "cmake -G Ninja -DPYTHON_DEPS_CHECKED=1 -DESP_PLATFORM=1 -DIDF_TARGET=esp32 -DCCACHE_ENABLE=0 /home/pi/esp/hello_world"...
-- Found Git: /usr/bin/git (found version "2.30.2")
-- The C compiler identification is GNU 8.4.0
-- The CXX compiler identification is GNU 8.4.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
-- Check for working C compiler: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc - broken
CMake Error at /usr/share/cmake-3.18/Modules/CMakeTestCCompiler.cmake:66 (message):
The C compiler

"/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc"

is not able to compile a simple test program.

It fails with the following output:

Change Dir: /home/pi/esp/hello_world/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_3d66c && [1/2] Building C object CMakeFiles/cmTC_3d66c.dir/testCCompiler.c.obj
[2/2] Linking C executable cmTC_3d66c
FAILED: cmTC_3d66c 
: && /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc   CMakeFiles/cmTC_3d66c.dir/testCCompiler.c.obj -o cmTC_3d66c   && :
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: error loading plugin: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: cannot open shared object file: No such file or directory
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
/home/pi/esp-idf/tools/cmake/project.cmake:334 (__project)
CMakeLists.txt:6 (project)

-- Configuring incomplete, errors occurred!
See also "/home/pi/esp/hello_world/build/CMakeFiles/CMakeOutput.log".
See also "/home/pi/esp/hello_world/build/CMakeFiles/CMakeError.log".

LOG Files:

1./home/pi/esp/hello_world/build/CMakeFiles/CMakeOutput.log

---

The target system is: Generic - -
The host system is: Linux - 5.10.63-v7+ - armv7l
Compiling the C compiler identification source file "CMakeCCompilerId.c" succeeded.
Compiler: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
Build flags:
Id flags: -c

The output was:
0

Compilation of the C compiler identification source "CMakeCCompilerId.c" produced "CMakeCCompilerId.o"

The C compiler identification is GNU, found in "/home/pi/esp/hello_world/build/CMakeFiles/3.18.4/CompilerIdC/CMakeCCompilerId.o"

Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" succeeded.
Compiler: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++
Build flags:
Id flags: -c

The output was:
0

Compilation of the CXX compiler identification source "CMakeCXXCompilerId.cpp" produced "CMakeCXXCompilerId.o"

The CXX compiler identification is GNU, found in "/home/pi/esp/hello_world/build/CMakeFiles/3.18.4/CompilerIdCXX/CMakeCXXCompilerId.o"

Checking whether the ASM compiler is GNU using "--version" matched "(GNU assembler)|(GCC)|(Free Software Foundation)":
xtensa-esp32-elf-gcc (crosstool-NG esp-2021r2) 8.4.0
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.

2. /home/pi/esp/hello_world/build/CMakeFiles/CMakeError.log

---

Compiling the C compiler identification source file "CMakeCCompilerId.c" failed.
Compiler: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
Build flags:
Id flags:

The output was:
1
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: error loading plugin: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: cannot open shared object file: No such file or directory
collect2: error: ld returned 1 exit status

Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++
Build flags:
Id flags:

The output was:
1
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: error loading plugin: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: cannot open shared object file: No such file or directory
collect2: error: ld returned 1 exit status

Detecting C compiler ABI info failed to compile with the following output:
Change Dir: /home/pi/esp/hello_world/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_3f173 && [1/2] Building C object CMakeFiles/cmTC_3f173.dir/CMakeCCompilerABI.c.obj
Using built-in specs.
COLLECT_GCC=/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
Target: xtensa-esp32-elf
Configured with: /builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/src/gcc/configure --build=x86_64-build_pc-linux-gnu --host=arm-host_unknown-linux-gnueabi --target=xtensa-esp32-elf --prefix=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf --with-local-prefix=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf/xtensa-esp32-elf --with-headers=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf/xtensa-esp32-elf/include --with-newlib --enable-threads=no --disable-shared --with-pkgversion='crosstool-NG esp-2021r2' --disable-__cxa_atexit --enable-cxx-flags=-ffunction-sections --disable-libgomp --disable-libmudflap --disable-libmpx --disable-libssp --disable-libquadmath --disable-libquadmath-support --with-gmp=/builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/buildtools/complibs-host --with-mpfr=/builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/buildtools/complibs-host --with-mpc=/builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/buildtools/complibs-host --with-isl=/builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/buildtools/complibs-host --enable-lto --enable-target-optspace --without-long-double-128 --disable-nls --enable-multiarch --enable-languages=c,c++ --disable-libstdcxx-verbose --enable-threads=posix --enable-gcov-custom-rtio --enable-libstdcxx-time=yes
Thread model: posix
gcc version 8.4.0 (crosstool-NG esp-2021r2)
COLLECT_GCC_OPTIONS='-v' '-o' 'CMakeFiles/cmTC_3f173.dir/CMakeCCompilerABI.c.obj' '-c'
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/cc1 -quiet -v -iprefix /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/ /usr/share/cmake-3.18/Modules/CMakeCCompilerABI.c -quiet -dumpbase CMakeCCompilerABI.c -auxbase-strip CMakeFiles/cmTC_3f173.dir/CMakeCCompilerABI.c.obj -version -o /tmp/ccSV4dRt.s
GNU C17 (crosstool-NG esp-2021r2) version 8.4.0 (xtensa-esp32-elf)
compiled by GNU C version 6.3.0 20170516, GMP version 6.2.0, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.19-GMP

GGC heuristics: --param ggc-min-expand=93 --param ggc-min-heapsize=118123
ignoring duplicate directory "/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/../../lib/gcc/xtensa-esp32-elf/8.4.0/include"
ignoring duplicate directory "/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/../../lib/gcc/xtensa-esp32-elf/8.4.0/include-fixed"
ignoring duplicate directory "/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/../../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/sys-include"
ignoring duplicate directory "/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/../../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/include"
#include "..." search starts here:
#include <...> search starts here:
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/include
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/include-fixed
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/sys-include
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/include
End of search list.
GNU C17 (crosstool-NG esp-2021r2) version 8.4.0 (xtensa-esp32-elf)
compiled by GNU C version 6.3.0 20170516, GMP version 6.2.0, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.19-GMP

GGC heuristics: --param ggc-min-expand=93 --param ggc-min-heapsize=118123
Compiler executable checksum: e50ca7ec70faaffd8b1cfcf5d609abac
COLLECT_GCC_OPTIONS='-v' '-o' 'CMakeFiles/cmTC_3f173.dir/CMakeCCompilerABI.c.obj' '-c'
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/as --traditional-format -o CMakeFiles/cmTC_3f173.dir/CMakeCCompilerABI.c.obj /tmp/ccSV4dRt.s
COMPILER_PATH=/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/:/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/:/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/
LIBRARY_PATH=/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/:/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/:/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/lib/
COLLECT_GCC_OPTIONS='-v' '-o' 'CMakeFiles/cmTC_3f173.dir/CMakeCCompilerABI.c.obj' '-c'
[2/2] Linking C executable cmTC_3f173
FAILED: cmTC_3f173
: && /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc -v CMakeFiles/cmTC_3f173.dir/CMakeCCompilerABI.c.obj -o cmTC_3f173 && :
Using built-in specs.
COLLECT_GCC=/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
COLLECT_LTO_WRAPPER=/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/lto-wrapper
Target: xtensa-esp32-elf
Configured with: /builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/src/gcc/configure --build=x86_64-build_pc-linux-gnu --host=arm-host_unknown-linux-gnueabi --target=xtensa-esp32-elf --prefix=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf --with-local-prefix=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf/xtensa-esp32-elf --with-headers=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf/xtensa-esp32-elf/include --with-newlib --enable-threads=no --disable-shared --with-pkgversion='crosstool-NG esp-2021r2' --disable-__cxa_atexit --enable-cxx-flags=-ffunction-sections --disable-libgomp --disable-libmudflap --disable-libmpx --disable-libssp --disable-libquadmath --disable-libquadmath-support --with-gmp=/builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/buildtools/complibs-host --with-mpfr=/builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/buildtools/complibs-host --with-mpc=/builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/buildtools/complibs-host --with-isl=/builds/idf/crosstool-NG/.build/HOST-arm-linux-gnueabi/xtensa-esp32-elf/buildtools/complibs-host --enable-lto --enable-target-optspace --without-long-double-128 --disable-nls --enable-multiarch --enable-languages=c,c++ --disable-libstdcxx-verbose --enable-threads=posix --enable-gcov-custom-rtio --enable-libstdcxx-time=yes
Thread model: posix
gcc version 8.4.0 (crosstool-NG esp-2021r2)
COMPILER_PATH=/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/:/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/:/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/
LIBRARY_PATH=/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/:/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/:/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/lib/
COLLECT_GCC_OPTIONS='-v' '-o' 'cmTC_3f173'
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/collect2 -plugin /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so -plugin-opt=/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/lto-wrapper -plugin-opt=-fresolution=/tmp/ccd9v6rN.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lnosys -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -o cmTC_3f173 /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/lib/crt0.o /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/crti.o /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/crtbegin.o -L/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0 -L/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc -L/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/lib CMakeFiles/cmTC_3f173.dir/CMakeCCompilerABI.c.obj -lgcc -lc -lnosys -lc -lgcc /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/crtend.o /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/crtn.o
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: error loading plugin: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: cannot open shared object file: No such file or directory
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

Determining if the C compiler works failed with the following output:
Change Dir: /home/pi/esp/hello_world/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_6b0e8 && [1/2] Building C object CMakeFiles/cmTC_6b0e8.dir/testCCompiler.c.obj
[2/2] Linking C executable cmTC_6b0e8
FAILED: cmTC_6b0e8
: && /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc CMakeFiles/cmTC_6b0e8.dir/testCCompiler.c.obj -o cmTC_6b0e8 && :
/home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: error loading plugin: /home/pi/.espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../libexec/gcc/xtensa-esp32-elf/8.4.0/liblto_plugin.so: cannot open shared object file: No such file or directory
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

[igrr]

Looks like this is the same issue as #7857, would you mind closing this one as duplicate and following updates on the earlier one?

[rrobinet]

OK and sorry