tools/windows/ .ps1 (pwsh, so usable from Linux and macOS too)
tools/posix/ .sh
tools/python/ .py
tools/ .c and .pl
The .c and .pl files stay at the top level because they are not
host-specific: the build compiles or invokes them on every platform.
Call sites updated in the Makefile, ports/mk/port.mk, docs and the
project memory. The one thing that does not survive a move on its own is
a script deriving the repo root from its own location -- all nine
PowerShell tools used Split-Path $PSScriptRoot -Parent, and memory-sync.sh
used dirname/.., both of which quietly become tools/ one level deeper.
Two levels now.
Two pre-existing Windows failures surfaced while verifying, both real and
neither caused by the move:
- schfs_fsck.c did not compile under mingw at all: --extract uses
POSIX mkdir(path,mode), symlink() and link(), none of which mingw
has. That took the whole tool with it, and `make schfs-check` with
it. mkdir maps to _mkdir; symlink and link fail loudly rather than
writing a regular file in their place, because an extracted tree
that differs from the image while reporting success defeats the
point of --extract.
- the round-trip test then failed at `ln -s`, since Git Bash cannot
create symlinks without developer mode. It skips with a message now.
Not a fudge: mkschfs's mingw build cannot see a symlink either, so
the test would have compared a tree with none against an image with
none and called it a pass -- coverage reporting itself as present
while being absent.
Verified on Windows: build clean, all seven bootcheck suites green,
make schfs-check passes.
Prerequisites per platform, why the toolchain is clang rather than a
cross-gcc, how to force GNU, and the host differences already handled --
listed because they are the shape of the next such bug.
Records the two things a second machine needs to know: ports cannot be
built on a Windows host (sysroot/ is used as staged, so build them once
on a Unix), and pwsh runs on Linux and macOS so the bootcheck suite is
not Windows-only.
Claude Code keeps per-project memory at <home>/.claude/projects/<key>/,
where <key> is the project's absolute path with every separator and the
drive colon turned into a dash. That makes it both rename-fragile and
machine-specific, and this project has hit each of those once:
- D:\DEV\Schunix -> D:\DEV\SchOS changed the key, and 43 memories were
invisible until moved across by hand.
- Development happens from Windows and from Linux, and each looks in a
different place for the same checkout.
Committing .claude/memory/ fixes both -- git carries it across renames
and between hosts -- and `import` puts it wherever the local machine
expects. .claude/settings.local.json stays ignored: those are per-machine
permissions.
The colon maps to a dash rather than being dropped. Deleting it gives
D-DEV-SchOS, which matches nothing and silently finds zero memories; that
was the first attempt. On Git Bash the key comes from `cygpath -w`,
because Claude Code is a Windows program and sees D:\DEV\SchOS, not
/d/DEV/SchOS.
Developed from both Windows and Linux, so nothing in the build should
care which host it runs on. It did, in four places.
Toolchain: one path instead of two. clang is a cross-compiler by
construction, so a single LLVM install targets bare-metal ELF, 16/32-bit
code below 1 MB, and Linux/musl userland from any host -- which is how
the Windows build already worked. The GNU branch beside it had drifted
into passing --no-warn-rwx-segments, a hard error on lld, which is the
default linker on both FreeBSD and macOS; and it required a brewed
x86_64-elf-gcc before anything built on a Mac at all. GNU is kept as a
fallback (USE_GNU=1) but clang+lld is chosen whenever both are present.
Host tools use the host's own cc; only mingw needs naming explicitly.
tools/mkschfs.c included <sys/sysmacros.h> unconditionally on non-mingw
hosts. That header is glibc/musl only -- macOS and the BSDs have neither
the header nor a need for it, since major()/minor() come from
<sys/types.h> there. Now guarded on __linux__.
Ports verified tarballs with `sha256sum -c -`, which does not exist on
macOS (shasum), FreeBSD/NetBSD (sha256), or OpenBSD (cksum -a sha256),
and each spells its check mode differently. tools/sha256check.sh picks
whichever of the five the host has and compares digests itself.
nproc is coreutils, so absent on macOS and BSD; falls through to sysctl
-n hw.ncpu before defaulting to 4.
The PowerShell tools now run under pwsh on any OS: QEMU is found on PATH
(the scoop location is a Windows-only fallback), and path literals use
forward slashes -- Join-Path $root 'build\x' produces a *filename
containing a backslash* on a Unix host. The backslash sweep is limited
to known directory prefixes on purpose: bootcheck sends
printf 'caf\303\251' to the guest to test UTF-8, and a blanket
substitution would have quietly changed what that asserts.
Also fixes six tools left booting build/fs.img, which stopped being
bootable when SchFS became the root filesystem: crashshot, dispshot,
fbshot, splashshot, textshot and ttyshot all take build/schfs.img now,
and the -SchFS switches that used to select it are gone.
Verified on Windows: full build, and bootcheck green. The Linux, macOS
and BSD paths are written from their documented behaviour and are NOT
executed here -- this machine has no WSL and no second host.
Removes the "-unix" element and with it any trademark exposure to The
Open Group.
The split follows the ecosystem layout: SchOS is the system, and the
kernel has its own name. Kernel-identity strings are the only places
that take SchIFT -- uname(2) sysname, /proc/version, and the two licence
sentences that say "kernel" outright. That is what every Unix does here:
`uname -s` on Linux reports the kernel, not the distribution. Everything
a user reads as the product -- panic screen, boot menu, error prefixes,
docs, LICENSE, NOTICE -- is SchOS.
schunix.img is schos.img, the logo assets and the musl TLS patch are
renamed, and __SCHUNIX__ is __SCHOS__ (the define and the patch that
consumes it moved together).
Two things the rename broke, both found by the bootcheck suite:
- shmtest wrote "SCHUNIX-MMAP-OK" with a hardcoded length of 15 and
compared it back by hand-counted offsets (m[3]=='U', m[14]=='K').
The shorter marker left the write running two bytes past the literal
and the compare reading past the data, failing a file-backed mmap
that was working correctly. Now written and compared through one
constant with sizeof.
- bootcheck asserted a 31-byte file after appending to
"hello-from-schunix"; the shorter string makes it 29.
Both are the same mistake: a string literal whose length is written out
somewhere else. Full suite green -- base, Tty, Ps, Sock, Fb, Usb, Evdev.
An x86-64 operating system built from xv6, now largely rewritten: SMP,
a copy-on-write root filesystem (SchFS), PCI/USB/virtio drivers, a TTF
rasteriser, and a Linux-numbered syscall ABI.
No history before this point -- the tree was never under version control.
This commit exists so the rename that follows has something to undo to.
