Source: skiboot Version: 7.0+dfsg-1 Tags: patch User: [email protected] Usertags: ftcbfs
skiboot fails to cross build from source, because it generally uses the build architecture toolchain. There are three sub-problems that I identified here: * The upstream Makefiles support the CROSS_COMPILE environment variable and setting it affects the choice of e.g. ld, which is relevant here. * Unfortunately, CROSS_COMPILE does not affect CC as it has a default and is assigned with ?=. Hence it needs to be set explicitly. * debian/rules uses DEB_TARGET_ARCH, but that's only relevant to compilers and skiboot is not a compiler. Changed to host. Fixing all of these makes skiboot cross buildable. I'm attaching the combined patch for your convenience. Helmut
diff -Nru skiboot-7.0+dfsg/debian/changelog skiboot-7.0+dfsg/debian/changelog --- skiboot-7.0+dfsg/debian/changelog 2021-10-29 15:32:03.000000000 +0200 +++ skiboot-7.0+dfsg/debian/changelog 2025-09-30 21:10:19.000000000 +0200 @@ -1,3 +1,13 @@ +skiboot (7.0+dfsg-1.1) UNRELEASED; urgency=medium + + * Non-maintainer upload. + * Fix FTCBFS: (Closes: #-1) + + Export CROSS_COMPILE for tools such as LD. + + As CROSS_COMPILE does not apply to CC, let dpkg export tools. + + Fix host vs target confusion. + + -- Helmut Grohne <[email protected]> Tue, 30 Sep 2025 21:10:19 +0200 + skiboot (7.0+dfsg-1) unstable; urgency=medium * Update to new upstream version 7.0+dfsg. diff -Nru skiboot-7.0+dfsg/debian/rules skiboot-7.0+dfsg/debian/rules --- skiboot-7.0+dfsg/debian/rules 2021-10-29 15:32:03.000000000 +0200 +++ skiboot-7.0+dfsg/debian/rules 2025-09-30 21:10:19.000000000 +0200 @@ -1,7 +1,5 @@ #!/usr/bin/make -f -include /usr/share/dpkg/default.mk - # Uncomment this to turn on verbose mode. export DH_VERBOSE=1 # Disable PIE flag has it makes opal-prd segfault @@ -11,12 +9,20 @@ # configured this way for s390x in Ubuntu 16.04 LTS). export DEB_LDFLAGS_MAINT_APPEND = -no-pie +include /usr/share/dpkg/default.mk +DPKG_EXPORT_BUILDTOOLS=1 +include /usr/share/dpkg/buildtools.mk + +ifneq ($(DEB_BUILD_ARCH),$(DEB_HOST_ARCH)) +export CROSS_COMPILE := $(DEB_HOST_GNU_TYPE)- +endif + %: dh $@ override_dh_auto_build-arch: -ifneq (,$(filter $(DEB_TARGET_ARCH), ppc64 ppc64el)) +ifneq (,$(filter $(DEB_HOST_ARCH), ppc64 ppc64el)) OPAL_PRD_VERSION=opal-prd-$(DEB_VERSION_UPSTREAM) make V=1 -C external/opal-prd/ endif GARD_VERSION=gard-$(DEB_VERSION_UPSTREAM) make V=1 -C external/gard/
