Jorijn van der Graaf
a89ca5a60c
The network hands the P-CSCF addresses to the modem in the PDN's Protocol Configuration Options; ModemManager's bearer code does not ask the modem for them, qmicli (libqmi 1.39) prints none of them, and libqmi has no TLV for the IPv6 list (0x2E), which is why PCSCF= was a required setting. A second QMI WDS client reads them once it is bound to the bearer's mux data port (the binding ModemManager gives its own clients): Bind Mux Data Port, Set IP Family 6, Get Current Settings, over one AF_QIPCRTR socket. Imsd:Qmi holds the bytes and the readers (0x22 the flag, 0x23 IPv4, 0x24 FQDN, 0x2E IPv6 in Qualcomm's layout: a count, then 16 bytes each); imsd-pcscf is the socket, the service lookup and the sequence, and prints the list, one address per line; nothing runs it yet. It sends no Start Network and no Stop Network; the bearer stayed connected and the registration stood after its runs (the fp6 journal's probe capture 04, benches 38 and 39). The build, the CI cross-compile, the tarball and the apk gain the product; linux-headers is named in the sysroot for <linux/qrtr.h>. Tested: crafter-build test, 8 passed; the aarch64 build of this commit's helper on the dev phone (KPN) against the live ims bearer.
54 lines
2.5 KiB
Shell
Executable file
54 lines
2.5 KiB
Shell
Executable file
#!/bin/sh
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# SPDX-License-Identifier: GPL-3.0-only
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# SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®
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# make-sysroot.sh — build an Alpine aarch64 sysroot for cross-compiling imsd.
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#
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# Downloads apk-tools-static + the Alpine signing keys from the CDN and
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# populates a minimal rootfs (musl, libc++, glib and their headers, the Linux
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# UAPI headers) that
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# clang can use via --sysroot. No root, no qemu, no device needed:
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#
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# packaging/make-sysroot.sh [dir] # default: ~/.cache/imsd/sysroot-aarch64-alpine
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# crafter-build -- --target=aarch64-alpine-linux-musl --sysroot=<dir> \
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# --march=… --mtune=… # the phone's values: AGENTS.md §4.3
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set -eu
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SYSROOT="${1:-$HOME/.cache/imsd/sysroot-aarch64-alpine}"
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MIRROR="${MIRROR:-https://dl-cdn.alpinelinux.org/alpine/edge}"
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ARCH=aarch64
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# gcc is in the list for its crtbeginS.o/libgcc: clang's driver for
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# *-alpine-linux-musl links against the GCC runtime it detects under
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# <sysroot>/usr/lib/gcc/<triple>/. llvm-runtimes is in it for the std module
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# source of this very libc++ (usr/share/libc++/v1/std.cppm; libc++-dev ships
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# none): crafter-build compiles the sysroot's own copy first. --upgrade below
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# is for a run over an existing sysroot: added alone beside libc++ 22,
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# llvm-runtimes 23's source did not compile against its headers; upgraded
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# with it, it did. linux-headers is in it for <linux/qrtr.h>, which
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# imsd-pcscf's QRTR socket needs (the sysroot had it only as another
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# package's dependency before).
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PKGS="musl-dev libc++ libc++-dev llvm-runtimes glib-dev compiler-rt llvm-libunwind-dev gcc linux-headers"
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work=$(mktemp -d)
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trap 'rm -rf "$work"' EXIT
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fetch_pkg() { # $1 = repo (main/community), $2 = package name -> path on stdout
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file=$(curl -fsSL "$MIRROR/$1/x86_64/" |
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grep -o "href=\"$2-[0-9][^\"]*\.apk\"" | head -n1 | cut -d'"' -f2)
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[ -n "$file" ] || { echo "cannot find $2 in $MIRROR/$1" >&2; exit 1; }
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curl -fsSL -o "$work/$file" "$MIRROR/$1/x86_64/$file"
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echo "$work/$file"
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}
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echo ">> fetching apk-tools-static + alpine-keys"
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tar -xzf "$(fetch_pkg main apk-tools-static)" -C "$work" sbin/apk.static 2>/dev/null
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tar -xzf "$(fetch_pkg main alpine-keys)" -C "$work" usr/share/apk/keys 2>/dev/null
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echo ">> populating $SYSROOT ($ARCH: $PKGS)"
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mkdir -p "$SYSROOT"
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"$work/sbin/apk.static" \
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--arch "$ARCH" --root "$SYSROOT" --initdb --no-scripts --no-cache \
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--usermode --keys-dir "$work/usr/share/apk/keys/$ARCH" \
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-X "$MIRROR/main" -X "$MIRROR/community" \
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add --upgrade $PKGS
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echo ">> done: $SYSROOT"
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