Source: zxing-cpp Version: 2.3.0-4 Tags: patch User: [email protected] Usertags: cross-satisfiability ftcbfs
zxing-cpp fails to cross build from source for two reasons both of which relate to its Python extension. The python3-dev build dependency cannot be installed for the host architecture as the host architecture Python compiler fails postinst when attempting byte compilation. Instead a build architecture interpreter and a host architecture development package is needed. This is usually achieved by depending on python3-dev:native and libpython3-dev. Beyond this, the extension build defaults to using the build architecture name for installing the built extension. It needs to be told about the correct path via the sysconfig mechanism. I'm attaching a patch addressing both problems. Please consider applying it as it makes zxing-cpp cross buildable. Helmut
diff -Nru zxing-cpp-2.3.0/debian/changelog zxing-cpp-2.3.0/debian/changelog --- zxing-cpp-2.3.0/debian/changelog 2025-04-30 20:07:19.000000000 +0200 +++ zxing-cpp-2.3.0/debian/changelog 2025-12-19 22:46:20.000000000 +0100 @@ -1,3 +1,12 @@ +zxing-cpp (2.3.0-4.1) UNRELEASED; urgency=medium + + * Non-maintainer upload. + * Fix FTCBFS: (Closes: #-1) + + Multiarchify Python Build-Depends. + + Export sysconfig data for cross compilation. + + -- Helmut Grohne <[email protected]> Fri, 19 Dec 2025 22:46:20 +0100 + zxing-cpp (2.3.0-4) unstable; urgency=medium * debian/patches/backport/: Cherry-pick upstream-suggested patches diff -Nru zxing-cpp-2.3.0/debian/control zxing-cpp-2.3.0/debian/control --- zxing-cpp-2.3.0/debian/control 2025-04-30 19:11:10.000000000 +0200 +++ zxing-cpp-2.3.0/debian/control 2025-12-19 22:46:18.000000000 +0100 @@ -9,11 +9,11 @@ libfmt-dev <!nocheck>, libgmock-dev <!nocheck>, libgtest-dev <!nocheck>, + libpython3-dev, libstb-dev, pkgconf, pybind11-dev, - python3, - python3-dev, + python3-dev:native, python3-numpy <!nocheck>, python3-opencv <!nocheck>, python3-pil <!nocheck>, diff -Nru zxing-cpp-2.3.0/debian/rules zxing-cpp-2.3.0/debian/rules --- zxing-cpp-2.3.0/debian/rules 2025-04-30 19:43:29.000000000 +0200 +++ zxing-cpp-2.3.0/debian/rules 2025-12-19 22:46:20.000000000 +0100 @@ -23,6 +23,9 @@ include /usr/share/dpkg/default.mk include /usr/share/dpkg/buildflags.mk +ifneq ($(DEB_BUILD_ARCH),$(DEB_HOST_ARCH)) +export _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__$(DEB_HOST_ARCH_OS)_$(DEB_HOST_MULTIARCH) +endif %: dh $@ --with python3
