Package: llvm-toolchain-9 Severity: normal Tags: patch User: reproducible-bui...@lists.alioth.debian.org Usertags: fixfilepath ftbfs X-Debbugs-Cc: reproducible-b...@lists.alioth.debian.org
When the reproducible=+fixfilepath feature is enabled (either through DEB_BUILD_OPTIONS, or using a dpkg that enables this by default), llvm-toolchain-9 fails to build from source: http://qa-logs.debian.net/2020/09/26.fixfilepath/llvm-toolchain-9_9.0.1-14_unstable_fixfilepath.log The fixfilepath feature sets a -ffile-prefix-map flag, which is only supported in clang-10 or newer. While the "fixfilepath" feature is not currently enabled in dpkg-buildflags by default, it may become the default at some point in the future, and can by triggered manually by setting DEB_BUILD_OPTIONS=reproducible=+fixfilepath in the build environment. More information about this issue is available at: https://tests.reproducible-builds.org/debian/issues/unstable/ftbfs_due_to_f-file-prefix-map_issue.html https://tests.reproducible-builds.org/debian/issues/unstable/ffile_prefix_map_passed_to_clang_issue.html The attached patch works around this issue by disabling the fixfilepath feature in debian/rules using DEB_BUILD_MAINT_OPTIONS=-fixfilepath. Thanks for maintaining llvm-toolchain-9! live well, vagrant
From d67e8671dda60249c76984a9ab62224570333c7a Mon Sep 17 00:00:00 2001 From: Vagrant Cascadian <vagr...@reproducible-builds.org> Date: Fri, 23 Oct 2020 00:28:08 +0000 Subject: [PATCH] Ensure fixfilepath feature is disabled. The fixfilepath feature sets a -ffile-prefix-map flag, which is only supported in clang-10. --- debian/rules | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/debian/rules b/debian/rules index b5be01a8..9fc9e675 100755 --- a/debian/rules +++ b/debian/rules @@ -58,6 +58,10 @@ ifneq (,$(filter $(DEB_HOST_ARCH),armel riscv64)) LDFLAGS_EXTRA += -latomic endif +# Ensure fixfilepath feature is disabled. The fixfilepath feature +# sets a -ffile-prefix-map flag, which is only supported in clang-10. +export DEB_BUILD_MAINT_OPTIONS=reproducible=-fixfilepath + # Cxx flags for building libcxx and libcxxabi LIBCXXFLAGS := $(shell dpkg-buildflags --get CXXFLAGS) $(shell dpkg-buildflags --get CPPFLAGS) -- 2.20.1
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