I'm having a similar issue, noting that we have to build picosdk, I followed the instructions linked above and I continually get this error (amongst others) but I'll start here...

I should have the pre-reqs done and when I run make-libpico.bat I get errors:

C:\Users\Chris Thompson\git\CoreN2G\src\RP2040\Tools\Build-pico-sdk>make-libpico.bat C:\Users\Chris Thompson\git\CoreN2G\src\RP2040\Tools\Build-pico-sdk>rmdir /S /Q build The system cannot find the file specified. C:\Users\Chris Thompson\git\CoreN2G\src\RP2040\Tools\Build-pico-sdk>mkdir build C:\Users\Chris Thompson\git\CoreN2G\src\RP2040\Tools\Build-pico-sdk>cd build C:\Users\Chris Thompson\git\CoreN2G\src\RP2040\Tools\Build-pico-sdk\build>cmake .. -DIPV6=0 -G "MSYS Makefiles" PICO_SDK_PATH is C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/pico-sdk Defaulting PICO_PLATFORM to rp2040 since not specified. Defaulting PICO platform compiler to pico_arm_gcc since not specified. -- Defaulting build type to 'Release' since not specified. PICO compiler is pico_arm_gcc -- The C compiler identification is GNU 10.3.1 -- The CXX compiler identification is GNU 10.3.1 -- The ASM compiler identification is GNU -- Found assembler: C:/Program Files (x86)/GNU Arm Embedded Toolchain/10 2021.10/bin/arm-none-eabi-gcc.exe Build type is RelWithDebInfo PICO target board is pico. Using board configuration from C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/pico-sdk/src/boards/include/boards/pico.h -- Found Python3: C:/msys64/usr/bin/python3.10.exe (found version "3.10.9") found components: Interpreter TinyUSB available at C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/pico-sdk/lib/tinyusb/src/portable/raspberrypi/rp2040; enabling build support for USB. cyw43-driver available at C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/pico-sdk/lib/cyw43-driver lwIP available at C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/pico-sdk/lib/lwip -- Configuring done -- Generating done -- Build files have been written to: C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/Tools/Build-pico-sdk/build C:\Users\Chris Thompson\git\CoreN2G\src\RP2040\Tools\Build-pico-sdk\build>set OLDPATH=C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\windows\System32\OpenSSH\;C:\Program Files\PuTTY\;C:\Program Files\Microchip\xc8\v2.36\bin;C:\Program Files\Git\cmd;C:\Program Files (x86)\GNU Arm Embedded Toolchain\10 2021.10\bin;C:\Program Files\GNU ARM Eclipse\Build Tools\2.6-201507152002\bin;C:\Users\Chris Thompson\AppData\Local\Microsoft\WindowsApps;C:\msys64\mingw64\bin;C:\msys64\usr\bin C:\Users\Chris Thompson\git\CoreN2G\src\RP2040\Tools\Build-pico-sdk\build>PATH C:\msys64\usr\bin;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\windows\System32\OpenSSH\;C:\Program Files\PuTTY\;C:\Program Files\Microchip\xc8\v2.36\bin;C:\Program Files\Git\cmd;C:\Program Files (x86)\GNU Arm Embedded Toolchain\10 2021.10\bin;C:\Program Files\GNU ARM Eclipse\Build Tools\2.6-201507152002\bin;C:\Users\Chris Thompson\AppData\Local\Microsoft\WindowsApps;C:\msys64\mingw64\bin;C:\msys64\usr\bin C:\Users\Chris Thompson\git\CoreN2G\src\RP2040\Tools\Build-pico-sdk\build>c:\msys64\usr\bin\make -j [[ 2 %2]% ] CreBautiilndgi ndgi rAeScMt oorbijeesc tf opri c'o-Psidoka/ssmrBcu/irlpd2'_c ommon/boot_stage2/CMakeFiles/bs2_default.dir/compile_time_choice.S.obj [ 3%] Linking ASM executable bs2_default.elf [ 4%] No download step for 'PioasmBuild' [ 5%] No update step for 'PioasmBuild' [ 5%] Built target bs2_default [ 6%] No patch step for 'PioasmBuild' [ 7%] Generating bs2_default.bin [ 8%] Performing configure step for 'PioasmBuild' [ 10%] Generating bs2_default_padded_checksummed.S loading initial cache file C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/Tools/Build-pico-sdk/build/pico-sdk/src/rp2_common/cyw43_driver/pioasm/tmp/PioasmBuild-cache-RelWithDebInfo.cmake /C/msys64/usr/bin/python3.10: can't open file '/C/Users/Chris Thompson/git/CoreN2G/src/RP2040/Tools/Build-pico-sdk/build/pico-sdk/src/rp2_common/boot_stage2/C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/pico-sdk/src/rp2_common/boot_stage2/pad_checksum': [Errno 2] No such file or directory make[2]: *** [pico-sdk/src/rp2_common/boot_stage2/CMakeFiles/bs2_default_padded_checksummed_asm.dir/build.make:73: pico-sdk/src/rp2_common/boot_stage2/bs2_default_padded_checksummed.S] Error 2 make[1]: *** [CMakeFiles/Makefile2:1460: pico-sdk/src/rp2_common/boot_stage2/CMakeFiles/bs2_default_padded_checksummed_asm.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... -- The CXX compiler identification is GNU 11.3.0 -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Check for working CXX compiler: C:/msys64/usr/bin/c++.exe - skipped -- Detecting CXX compile features -- Detecting CXX compile features - done -- Configuring done -- Generating done -- Build files have been written to: C:/Users/Chris Thompson/git/CoreN2G/src/RP2040/Tools/Build-pico-sdk/build/pioasm [ 11%] Performing build step for 'PioasmBuild' [ 10[% ] 2[0B%u ]i3 l0[Bd %[ui5nil ]g0 [ %]5 6 0%C0BBd]X%uui X]iinB ldguolBi nbduiCgjiinX ClldXX dXioeig nbcn ogjt Cb eg CXCcjXXXt C oXMb ajokebecjFtei clCteM saC/keFiMplCeXaies/pkoMc ieasm.oFdaii[rls /mt 7age.o[C0kedsb M%eni/j8a]F/rpe0k ip/ic%elBagot]Feurea isisnsCl/Ble/mMepudrl.asiii.edk/eldcxiopaiiperFnsonpr/igmag..cl .s oCbeCdmc_XjsXi.psX /Xrdpd p /i.koiomro_boba/bpjasimji jno.ueoe.[dtc_cc pptats9pu.i s0 torCe%C.b/Mm]M apabclkBikjpe uoeperi_F.F.ldioicdilblpiseepjnass. gs//o bppiCjX oisXaoeas msbommlb..ejddreii.cctrrp //pChp.Meyoaxtbk_hon_output.cepp.obj ojF uitlpeust/.pcipopa.somb.jd ir/ada_output.cpp.obj [100%] Linking CXX executable pioasm.exe [100%] Built target pioasm [ 12%] No install step for 'PioasmBuild' [ 13%] Completed 'PioasmBuild' [ 13%] Built target PioasmBuild make: *** [Makefile:91: all] Error 2

Any ideas?