arm-none-eabi-gcc no longer builds

[rgrr]

Seems to be related to Debian updates of the arm-none-eabi packages.

Error is:

08:04:26 **** Build of configuration Default for project picoprobe ****
make -j12 all 
ninja -C _build all
ninja: Entering directory `_build'
ninja: Jobserver mode detected:  -j12 --jobserver-auth=fifo:/tmp/GMfifo56503
[1/234] Linking ASM executable pico-sdk/src/rp2350/boot_stage2/bs2_default.elf
FAILED: [code=1] pico-sdk/src/rp2350/boot_stage2/bs2_default.elf pico-sdk/src/rp2350/boot_stage2/bs2_default.dis /mnt/d/u/pico/picoprobe/_build/pico-sdk/src/rp2350/boot_stage2/bs2_default.dis 
: && /usr/bin/arm-none-eabi-gcc -mcpu=cortex-m33 -mthumb -march=armv8-m.main+fp+dsp -mfloat-abi=softfp -Og -g -Wl,--build-id=none --specs=nosys.specs -nostartfiles -Wl,--script=/mnt/d/u/pico/pico-sdk2/src/rp2350/boot_stage2/boot_stage2.ld -Wl,-Map=/mnt/d/u/pico/picoprobe/_build/pico-sdk/src/rp2350/boot_stage2/bs2_default.elf.map pico-sdk/src/rp2350/boot_stage2/CMakeFiles/bs2_default.dir/compile_time_choice.S.o -o pico-sdk/src/rp2350/boot_stage2/bs2_default.elf   && cd /mnt/d/u/pico/picoprobe/_build/pico-sdk/src/rp2350/boot_stage2 && /usr/bin/arm-none-eabi-objdump -h /mnt/d/u/pico/picoprobe/_build/pico-sdk/src/rp2350/boot_stage2/bs2_default.elf > bs2_default.dis && /usr/bin/arm-none-eabi-objdump -d /mnt/d/u/pico/picoprobe/_build/pico-sdk/src/rp2350/boot_stage2/bs2_default.elf >> bs2_default.dis && /home/hardy/bin/picotool/picotool coprodis --quiet bs2_default.dis bs2_default.dis
arm-none-eabi-gcc: fatal error: cannot read spec file 'nosys.specs': No such file or directory
compilation terminated.
ninja: build stopped: subcommand failed.
make: *** [Makefile:65: all] Error 1
"make -j12 all" terminated with exit code 2. Build might be incomplete.

clang still compiles.

[rgrr]

ok... updating everything helped but opened several other issue. One is that gcc-release with newlib no longer links because stdout is missing.

With picolibc it is working.

[rgrr]

After some Debian, picosdk2, TinyUSB updates... compilation no longer works smoothly

• clang-rp2040 build no longer works because I have to use lld for successful linking with rp2350
• gcc-newlib does not compile for release mode, gcc-picolibc compiles - picosdk2 does not detect if there is only picolibc installed. Default is to use newlib which compiles "newlib_interface.c" which does handle stdout differently
• gcc-newlib states that it was compiled with picolibs in debug output - this is actually correct because on Debian there seems to be no longer newlib
• how does picosdk2 actually set newlib or picolibs for the gcc case? PICO_CLIB is actually nowhere used for compiling/linking? See Debian testing provides only picolibc but no newlib resulting in missing "stdout" raspberrypi/pico-sdk#2933 and newlib/picolibc auto detection raspberrypi/pico-sdk#2934, replaced by Add detection of newlib vs picolibc if not specified raspberrypi/pico-sdk#2935