mold 1.4.1 is a maintenance release of the high-speed linker. This release contains the following improvements and bug fixes.

Note for those who create mold binary packages: if you are building mold for binary distribution, please link the bundled libtbb statically (which is default) or rebuild your distro's libtbb package with my patch so that mold's Link-Time Optimization (LTO) works reliably under heavy load.

New features

• mold/macOS is now available as an alpha feature. We do not recommend using it for anything serious though. Starting from this version, we accept not only mold/Unix issues but also mold/macOS ones on our GitHub Issues. Feel free to file a bug if you encounter any problem.
• We started supporting CMake in addition to Make to build mold. Our long-term plan is to migrate from Make to CMake because we want to support Windows eventually and CMake provides a better Windows support than Make does. (e6a0e67)

Bug fixes and compatibility improvements

• There was a bug that mold accidentally exported a hidden symbol from an executable if a shared library linked to that executable happened to define the same symbol. This caused a build issue with Blender (#606). The bug has been fixed. (b163068)
• --hash-style=both is now the default if no --hash-style option is given. Previously, --hash-style=sysv was the default. This change shouldn't affect most users because the compiler driver (cc, gcc, clang, etc.) always passes --hash-style to the linker. We made this change because GNU ld defaults to --hash-style=both.
• Alias symbols defined by the --defsym option now have the same scope as the aliased symbols. Previously, alias symbols defined by --defsym were always hidden and never be exported as dynamic symbols. (5dd1227)
• mold now accepts foo = bar-style linker script directive to define symbol aliases. Previously, such statement was treated as a syntax error. This change was made to link mariadb-connector-c correctly (f0e1237)
• Symbols in mergeable string sections now have correct output section indices instead of SHN_UNDEF. (a595c48)
• [ARM32] Previously, calling a function from ARM code to Thumb code caused a program crash due to bug #442. This issue has been fixed. (053b90b)

Acknowledgements

mold is an open-source project, and we accept donations via GitHub Sponsors and OpenCollective. We thank you to everybody who sponsors our project. In particular, we'd like to acknowledge the following organizations and people who have sponsored $32/mo or more during this release cycle:

• 300baud
• Mercury
• signal-slot
• Wei Wu
• BuildBuddy
• Luke Kasz
• Will Bond
• H.T
• .-A-.
• nasa
• haze
• daquexian
• modocache
• repi
• Anonymous sponsor