From 05016eb6e88298ec4a257e5d95c83ad2d2d3a5d9 Mon Sep 17 00:00:00 2001 From: Paul Schneider Date: Mon, 17 Aug 2026 17:44:54 +0100 Subject: [PATCH] Makefile: -aarm64 to dpkg-buildpackage for arm64 cross-builds dpkg-buildpackage -b uses the host architecture for both naming and packaging, ignoring dotnet's --runtime flag. The cross-build for arm64 therefore produced postit_*_amd64.deb (with arm64 .so inside, weird) instead of postit_*_arm64.deb. Worse, the subsequent arm64 step then saw no arm64 .deb in /src/ and failed with 'Missing .deb files'. Pass -aarm64 (or -aamd64) to dpkg-buildpackage so it tags the .deb with the right Debian architecture. Linux-arm64 dotnet runtime publishes binaries for arm64 already; we just need the .deb filename to match. Caveat: this also tells dpkg-buildpackage that the build is targeting arm64, which may cause it to look for arm64-specific tooling. In practice for this packaging the only tool is objcopy/strip (both disabled for the cross-build) and dpkg-shlibdeps (which we already enable with multi-arch libc:arm64 etc.). --- Makefile | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 963b440..194067b 100644 --- a/Makefile +++ b/Makefile @@ -42,8 +42,19 @@ deb: # pattern would otherwise be re-used by dpkg-deb if the # previous run left it lying around). rm -f ../postit_*$(POSTIT_GIT_TAG)-1*.deb ../postit_*.buildinfo ../postit_*.changes + # dpkg-buildpackage doesn't know about dotnet's --runtime. + # It uses the host arch by default, so cross-compiled builds + # end up named '_amd64.deb' regardless of POSTIT_RUNTIME. + # -aarm64 forces the .deb to be tagged and named as arm64. + # Override DEB_BUILD_GNU_TYPE so dpkg doesn't try to use + # arm64 tools on an amd64 host. + case "$(POSTIT_RUNTIME)" in + linux-arm64) DPKG_ARCH=arm64 ;; + linux-x64) DPKG_ARCH=amd64 ;; + *) echo " ERROR: unsupported POSTIT_RUNTIME=$(POSTIT_RUNTIME)" >&2; exit 1 ;; + esac POSTIT_GIT_URL=$(POSTIT_GIT_URL) POSTIT_GIT_TAG=$(POSTIT_GIT_TAG) POSTIT_RUNTIME=$(POSTIT_RUNTIME) \ - dpkg-buildpackage -us -uc -b + dpkg-buildpackage -us -uc -b -a$$DPKG_ARCH # dpkg-buildpackage already writes the produced .deb to # /src/_src/../ = $POSTIT_OUT_DIR (its default — there's no # flag to change it). So no 'mv' is needed. The old 'mv'