0.8.0

To see how the performance of this release compares with previous releases, see the benchmarks page.

🚀 Features

• Support --hash-style={sysv, both} (#1281)
• Support negation ('^') in version script globs (#1284)
• Support PT_GNU_PROPERTY (#1297)
• Support --defsym=symbol=expression (#1300)
• Support symbol definitions in linker script (#1307)
• Support merging non-string sections (#1306)
• Handle -z x86-64-* ISA needed (#1320)
• Ignore --discard-all/-x option (#1377)
• Support SFrame (#1287)
• Support --section-start=.section=address (#1385)
• Add --no-update-in-place flag (#1395)
• Support -z max-page-size (#1400)
• LoongArch64 support (#1409)
• Support expressions in --defsym and linker script symbol assignment (#1418)
• Sort .init_array and .fini_array by priority (#1408)
• Support --no-eh-frame-hdr (#1440)
• Support -z stack-size=SIZE (#1448)
• Include metrics connected to '.eh_frame' (#1443)
• Add --pic-executable as an alias for --pie (#1453)
• Support variant_pcs (#1272)
• Support .variant_cc (#1280)

⚡ Performance

• Make --update-in-place default and fallback to unlinking on ETXTBSY (#1238)
• Parallelize copying data sections (#1277)
• Avoid heap allocating each task during string merging (#1286)
• Minor improvement to cache efficiency of resolution (#1294)
• Merge some of the GC phases into a single phase (#1330)
• Process merge-string sections in mostly equal chunks (#1345)
• Run string merging and GC in parallel (#1339)
• Preallocate a Vec to avoid resizes (#1349)
• Optimize version script from rustc (#1355)
• Tweak how we determine the target number of groups (#1432)

🪲 Bug Fixes

• Ensure we write every byte of file even when updating in-place (#1276)
• Align output kind with LD in more cases (#1279)
• Don't try to emit copy relocations for non-canonical symbol aliases (#1308)
• Put common TLS symbols into correct section (#1310)
• Handle non-absolute paths with --no-allow-shlib-undefined (#1321)
• Do not add duplicated rpath entries (#1338)
• save_dir::make_relative_path() now works as expected (#1337)
• Reorder some sections so that objcopy doesn't complain (#1358)
• (save-dir) Handle @filename when processing save-dir (#1362)
• Use DT_SONAME to help determine if SO deps are met (#1390)
• (save-dir) Don't make paths in linker scripts relative if in sysroot (#1393)
• Relax debug info comparison against bfd (#1397)
• Don't exclude all libs when not yet supported --exclude-libs is passed (#1394)
• Properly resolve and retain defsym target symbols (#1402)
• (save-dir) Normalize source paths before checking if it's in sysroot (#1406)
• Resolve __real_foo in --wrap even without __wrap_foo (#1419)
• (CREL) Reduce allocation for non-EH relocations (#1426)
• Don't try to copy CREL sections to output file (#1438)
• Ifunc address equality for data section references (#1441)
• Ifunc address equality for GOT-relative relocations (#1446)

📚 Documentation

• Improve building and benching docs for rustc (#1283)
• Add some info about our monthly dev team meetings (#1291)
• Update rustc building instructions & format all the rustflags consistently (#1324)
• Add alternative Clang invocation (#1334)
• Add instructions for using wild with clang and gcc (#1354)
• Add PACKAGING.md instructions (#1342)
• Improve instructions on checking if wild was actually used (#1316)

🎨 Styling

• Wrap comments at 100 characters (#1268)

📦 Packaging

• Update for inclusion in Nixpkgs (#1318)

🛠️ Dev tooling

• Make absolute address checking work correctly (#1417)
• Add support for writing perfetto traces (#1323)
• Add a tool to aid with running benchmarks (#1454)
• Add Dockerfile for Gentoo (#1373)

⚖️ Linker Diff

• Ignore VER_NDX_LOCAL vs GLOBAL for undefined symbols (#1424)
• LoongArch64 support (#1428)

🧪 Testing

• Make a test failure message less confusing (#1275)
• Set timeout-minutes for CI jobs (#1301)
• Add a test for backtraces (#1353)
• Use a separate subdirectory for each tests build (#1404)
• Drop ubuntu 25.04 (#1433)
• Improve robustness of integration-test usage of run-with (#1437)
• Add cache for a couple of build jobs (#1434)
• Use separate archive sources for a couple of tests (#1401)
• Move contents of exit.c to runtime.c (#1447)
• Add a test for -Bsymbolic-non-weak (#1427)
• Use rust-cache actions (#1444)
• Introduce WILD_TEST_CROSS=all (#1425)
• Introduce SkipArch integration test directive (#1415)
• Include next upcoming LTS Ubuntu release (#1416)
• Run loongarch64 external tests (#1421)

🔨 Refactor

• A few simplifications to sysvs .hash computations (#1282)
• Change resolution to use a work queue (#1290)
• Make timing annotations use tracing indirectly (#1295)
• Make secondary output sections more flexible (#1312)
• Decouple OutputKind from Args (#1293)
• Preparations to run string merging in parallel with GC (#1329)
• Change GC to use a channel for work control (#1331)
• Change GC phase to use rayon scopes (#1344)
• Rewrite input opening work control (#1348)
• Change symbol resolution to use rayon scopes (#1363)
• Have linker script emit symbol defs directly (#1364)
• Work towards being able to load additional batches of files (#1365)
• Separate Epilogue into two separate entities (#1367)
• Move dynamic symbol definitions onto layout (#1368)
• Move gnu property notes to the layout (#1369)
• Move riscv attributes to the layout (#1370)
• Move eflags out of the prelude (#1371)
• Get rid of SymbolDb::num_symbols_per_group (#1372)
• Allow SymbolDb to be built in stages (#1374)
• Allow symbol resolution to be done in stages (#1375)
• Parse files as we open them (#1380)
• Make InputRef implement Copy (#1382)
• Get rid of InputFile::kind (#1383)
• Split ResolvedObject into dynamic and non-dynamic variants (#1389)
• Drop fd-lock dev dependency (#1319)
• Port linked-diff table to tabled crate (#1361)

👥 Contributors

• davidlattimore
• lapla-cogito
• marxin
• mati865
• karolzwolak
• RossSmyth
• YamasouA
• csfore
• zyxhere
• tshepang
• TechnoPorg

💲 Sponsors

Thanks to everyone who has sponsored davidlattimore, in particular the following people who have sponsored at least $30 since the last release:

• aws
• wasmerio
• repi
• CodeursenLiberte
• mati865
• Urgau
• marxin
• +48 others