benjamasu
commented
9 hours ago It was my mistake to place the downloading and unpacking of the hardened_malloc sources archive in bootstrap.sh. If you still have the image from #1355, you can use it with the reproduce.sh from this comment.
### Dockerfile
# name the portage image
FROM gentoo/portage:latest AS portage
# based on stage3 image
FROM gentoo/stage3:llvm
# copy the entire portage volume in
COPY --from=portage /var/db/repos/gentoo /var/db/repos/gentoo
ADD bootstrap.sh /
ADD reproduce.sh /
RUN chmod +x /reproduce.sh
RUN chmod +x /bootstrap.sh
RUN /bootstrap.sh
CMD [ "/bin/bash" ]### bootstrap.sh
#!/bin/bash
echo '
CC=clang
CXX=clang++
LD=ld.lld
AR=llvm-ar
NM=llvm-nm
STRIP=llvm-strip
OBJCOPY=llvm-objcopy
OBJDUMP=llvm-objdump
READELF=llvm-readelf
RANLIB=llvm-ranlib
ACCEPT_KEYWORDS="~amd64"
FEATURES="${FEATURES} splitdebug parallel-fetch parallel-install -ipc-sandbox -network-sandbox -pid-sandbox"
USE="${USE} debug binutils-plugin verify-sig"
' >> /etc/portage/make.conf
echo "MAKEOPTS=\"-j$(nproc)\"" >> /etc/portage/make.conf
# echo "EMERGE_DEFAULT_OPTS=\"-j$(nproc) --load-average=$(($(nproc) + 1)).0\"" >> /etc/portage/make.conf
# Select fastest available mirrors
emerge -v mirrorselect
mirrorselect -S -s 3 -b 10 -o >> /etc/portage/make.conf
# Rebuild LLVM with USE=binutils-plugin to make LLVMgold available
emerge -v llvm clang lld llvmgold
## GCC and Glibc can also be rebuilt to get debug symbols.
## GCC 13 is only needed for the reason
## that the command I suggested in `reproduce.sh`
## links against GCC 13 libstdc++,
## but this can be easily changed.
# emerge -v glibc "sys-devel/gcc:13"
# emerge -v valgrind
# Build mold from git HEAD
emerge -v dev-vcs/git
# If specific commit needed,
# then just set the values of the corresponding environment variables
# * EGIT_OVERRIDE_REPO_RUI314_MOLD
# * EGIT_OVERRIDE_BRANCH_RUI314_MOLD
# * EGIT_OVERRIDE_COMMIT_RUI314_MOLD
# * EGIT_OVERRIDE_COMMIT_DATE_RUI314_MOLD
env ACCEPT_KEYWORDS="**" emerge -v mold
## Build mold with latest available release in gentoo repos
# emerge -v mold### reproduce.sh
#!/bin/bash
# Required to add clang to PATH
source /etc/profile
wget -O git-2.47.0.tar.xz https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.47.0.tar.xz
tar -xaf git-2.47.0.tar.xz
cd git-2.47.0
make CC=clang CXX=clang++ LD=ld.mold CFLAGS="-flto=thin" CXXFLAGS="-flto=thin" LDFLAGS="-flto=thin -fuse-ld=mold" V=1 -j$(nproc)
Probably related to #1355. The problem appears when using Clang + LTO + mold, but not always. When in the mentioned issue the problem occurred when building any sources, this one does not always appear.
I'll post a Dockerfile to reproduce the problem a bit later.