Picolibc 1.0 Released - A New C Library For Embedded Systems

[phoronix]

Phoronix: Picolibc 1.0 Released - A New C Library For Embedded Systems

Longtime X11 developer Keith Packard -- who these days is focused full-time on RISC-V while working for SiFive -- has released Picolibc 1.0 as a new libc implementation for embedded systems...

http://www.phoronix.com/scan.php?page=news_item&px=Picolibc-1.0-Released

[cybertraveler]

I scanned around a bit in the links, but couldn't find which C standard the library aims to conform to. Personally I like to work with C99 at minimum. I like the integer types introduced in it.

[Raka555]

Wonder how nice systemd will play with this ...

[Julien Bear]

Wonder how nice systemd will play with this ...

There should be Poettering's law comparable to Godwin's Law.

[yoshi314]

Wonder how nice systemd will play with this ...

it won't most likely. can you build it with musl - there was an effort to patch it to do so, not sure what came out of it.

[discordian]

Oh great meson, means it will likely never be able to build that library for multilib without extra shell or python scripts tacked on.

[maarten]

I scanned around a bit in the links, but couldn't find which C standard the library aims to conform to. Personally I like to work with C99 at minimum. I like the integer types introduced in it.

I think it's c99. See the meson header: https://github.com/keith-packard/pic...eson.build#L38

[FireBurn]

Oh great meson, means it will likely never be able to build that library for multilib without extra shell or python scripts tacked on.

I'm building multilib packages just fine with meson here, just make sure your cross file is correct if you're having issues

[discordian]

I'm building multilib packages just fine with meson here, just make sure your cross file is correct if you're having issues

And who creates the crossfiles (~20 for arm see below) when building the compiler, you know how inter-depend gcc and c-library are?
A sane buildsystem does not need external shell or python scripts for the most common task.

$ ./arm-none-eabi-gcc -print-multi-lib
.;
arm/v5te/softfp;@marm@march=armv5te+fp@mfloat-abi=softfp
arm/v5te/hard;@marm@march=armv5te+fp@mfloat-abi=hard
thumb/nofp;@mthumb@mfloat-abi=soft
thumb/v7/nofp;@mthumb@march=armv7@mfloat-abi=soft
thumb/v7+fp/softfp;@mthumb@march=armv7+fp@mfloat-abi=softfp
thumb/v7+fp/hard;@mthumb@march=armv7+fp@mfloat-abi=hard
thumb/v6-m/nofp;@mthumb@march=armv6s-m@mfloat-abi=soft
thumb/v7-m/nofp;@mthumb@march=armv7-m@mfloat-abi=soft
thumb/v7e-m/nofp;@mthumb@march=armv7e-m@mfloat-abi=soft
thumb/v7e-m+fp/softfp;@mthumb@march=armv7e-m+fp@mfloat-abi=softfp
thumb/v7e-m+fp/hard;@mthumb@march=armv7e-m+fp@mfloat-abi=hard
thumb/v7e-m+dp/softfp;@mthumb@march=armv7e-m+fp.dp@mfloat-abi=softfp
thumb/v7e-m+dp/hard;@mthumb@march=armv7e-m+fp.dp@mfloat-abi=hard
thumb/v8-m.base/nofp;@mthumb@march=armv8-m.base@mfloat-abi=soft
thumb/v8-m.main/nofp;@mthumb@march=armv8-m.main@mfloat-abi=soft
thumb/v8-m.main+fp/softfp;@mthumb@march=armv8-m.main+fp@mfloat-abi=softfp
thumb/v8-m.main+fp/hard;@mthumb@march=armv8-m.main+fp@mfloat-abi=hard
thumb/v8-m.main+dp/softfp;@mthumb@march=armv8-m.main+fp.dp@mfloat-abi=softfp
thumb/v8-m.main+dp/hard;@mthumb@march=armv8-m.main+fp.dp@mfloat-abi=hard

[starshipeleven]

Wonder how nice systemd will play with this ...

Picolibc is designed for microcontrollers, Systemd support is irrelevant. You will never run Linux if your hardware has "a few kB of flash and even fewer kB of RAM".