0c999a943d
* [x86-64] mold 2.3.0 has introduced an experimental flag, -z rewrite-endbr, which
rewrites superfluous endbr64 instructions as nop.
* endbr64 is a relatively recent x86 instruction used to mark locations where an
indirect jump instruction can transfer control. With control-flow integrity
enabled (meaning endbr64 is effective), an indirect jump can only target an
endbr64 or it will trigger a runtime exception. This mechanism significantly
hinders certain control hijacking attacks, such as ROP or JOP, since attackers
cannot jump to just any location.
* When given the -fcf-protection flag, GCC conservatively places an endbr64 at the
beginning of every global function. This is because the function's address might
be taken as a pointer by other translation units. However, in most cases,
function addresses are not actually taken. This conservative approach results in
an overabundance of unnecessary endbr64 instructions, leading to not only code
bloating but also a potential decrease in security as there are more locations
for an attacker to exploit.
* The new linker option, -z rewrite-endbr, aims to alleviate this issue. The
linker can carry out a whole-program analysis on the input files to identify
functions whose addresses are never taken. If -z rewrite-endbr is specified,
mold will conduct this analysis and replace the initial endbr64 with a nop for
functions whose addresses aren't taken. (17f0d85)
* mold now produces a more compact .gdb_index section when using the --gdb-index
flag. Additionally, mold now generates a correct .gdb_index section for object
files created by Clang. (a396fa4)
* mold is now capable of handling input sections larger than 4 GiB. (0ce32d3)
* [PPC] mold can now generate executables for POWER10 processors. Previously,
executables produced by mold would crash immediately on startup on POWER10.
(0f71471)
* [ARM64] When a function with a non-standard calling convention is exported, it's
mandatory for the linker to turn on the STO_AARCH64_VARIANT_PCS flag to notify
OBS-URL: https://build.opensuse.org/package/show/devel:tools:compiler/mold?expand=0&rev=98
116 lines
3.0 KiB
RPMSpec
116 lines
3.0 KiB
RPMSpec
#
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# spec file for package mold
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#
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# Copyright (c) 2023 SUSE LLC
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#
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# All modifications and additions to the file contributed by third parties
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# remain the property of their copyright owners, unless otherwise agreed
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# upon. The license for this file, and modifications and additions to the
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# file, is the same license as for the pristine package itself (unless the
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# license for the pristine package is not an Open Source License, in which
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# case the license is the MIT License). An "Open Source License" is a
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# license that conforms to the Open Source Definition (Version 1.9)
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# published by the Open Source Initiative.
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# Please submit bugfixes or comments via https://bugs.opensuse.org/
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#
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Name: mold
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Version: 2.3.0
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Release: 0
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Summary: A Modern Linker (mold)
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License: MIT
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Group: Development/Tools/Building
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URL: https://github.com/rui314/mold
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Source: https://github.com/rui314/mold/archive/v%{version}/mold-%{version}.tar.gz
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Patch0: build-blake-3-as-static.patch
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BuildRequires: cmake
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%if %{suse_version} < 1550
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BuildRequires: gcc11-c++
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%else
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# These libraries are not present for openSUSE Leap
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BuildRequires: gcc-c++
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BuildRequires: clang
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BuildRequires: libdwarf-tools
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BuildRequires: llvm
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BuildRequires: llvm-gold
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BuildRequires: tbb-devel
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%ifarch x86_64
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BuildRequires: gcc-32bit
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%endif
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%endif
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BuildRequires: gdb
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BuildRequires: glibc-devel-static
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BuildRequires: libzstd-devel
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%ifnarch ppc64
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BuildRequires: valgrind
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%endif
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BuildRequires: zlib-devel
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BuildRequires: zstd
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PreReq: update-alternatives
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%if %{suse_version} < 1550
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%define build_args -DMOLD_USE_MIMALLOC=OFF -DMOLD_USE_MIMALLOC=OFF
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%else
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%define build_args -DMOLD_USE_MIMALLOC=OFF -DMOLD_USE_MIMALLOC=OFF -DMOLD_USE_SYSTEM_TBB=ON
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%endif
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%description
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mold is a faster drop-in replacement for existing Unix linkers.
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It is several times faster than LLVM lld linker, the second-fastest
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open-source linker.
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mold is created for increasing developer productivity by reducing
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build time especially in rapid debug-edit-rebuild cycles.
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%prep
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%autosetup -p1
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%build
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%if %{suse_version} < 1550
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export CC=gcc-11
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export CXX=g++-11
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%endif
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%cmake %{build_args}
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%cmake_build
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%install
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%cmake_install
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%check
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%if %{suse_version} < 1550
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export TEST_CC=gcc-11
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export TEST_CXX=g++-11
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%endif
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%ctest
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%post
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"%_sbindir/update-alternatives" --install \
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"%_bindir/ld" ld "%_bindir/ld.mold" 1
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%pre
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if [ "$1" -gt 0 ] && [ -f %{_sbindir}/update-alternatives ] ; then
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"%_sbindir/update-alternatives" --remove ld "%_bindir/ld.mold";
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fi;
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%postun
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if [ ! -f %{_bindir}/lld ] ; then
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"%{_sbindir}/update-alternatives" --remove ld "%{_bindir}/ld.mold"
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fi
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%files
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%ghost %_sysconfdir/alternatives/ld
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%{_bindir}/mold
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%{_bindir}/ld.mold
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%dir %{_libdir}/mold
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%{_libexecdir}/mold/ld
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%dir %{_libexecdir}/mold
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%{_libdir}/mold/mold-wrapper.so
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%{_mandir}/man1/mold.1.gz
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%{_mandir}/man1/ld.mold.1.gz
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%dir /usr/share/doc/mold
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%doc /usr/share/doc/mold/LICENSE
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%doc /usr/share/doc/mold/LICENSE.third-party
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%changelog
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