Added

• Initial libtool support (#1618)

Fixed

• (parallel) print the child's exit status as debug output (#2055)
• (target-parsing) wasm32-none-component (#2054)

Other

• Regenerate target info (#2053)

Other

• Regenerate windows sys bindings (#2019)

Added

• pass AddressSanitizer on to the C compiler (#2045)
• add source root for stable external object names (#2034)
• emit rerun-if-env-changed for the compiler's own env vars (#2035)
• (env) read Cargo's variables from the env snapshot (#2028)
• collect compile commands into a compile_commands.json (#1990)

Fixed

• don't prefer clang for -Clinker-plugin-lto=no (#2046)
• keep the order of flag and flag_if_supported (#2044)
• correct "arbitary" typo in target parser comment (#2039)
• correct "stablised" typos in TODO comments (#2040)
• (msvc) pass objects to the archiver relative to the output directory (#2033)
• honor disabled linker-plugin LTO (#2024)
• apply RUSTC_WRAPPER to the cl.exe cc finds itself (#2022)

Other

• (parallel) poll on jobserver helper thread (#2021)
• (parallel) add jobserver polling for windows (#2020)
• Regenerate windows sys bindings (#2019)
• (parallel) add polling for process exit on windows (#2016)
• (parallel) poll for process exit on macOS/bsd (#2014)

Added

• add CC_PREFER_CLANG_CL_OVER_MSVC to override prefer_clang_cl_over_msvc (#2001)

Fixed

• (panic) fix panic in code and replace with error when appropriate (#2008)
• (env) do not panic if WASM_MUSL_SYSROOT not set (#2007)
• (jobserver) help thread gets more token than necessary (#2006)
• stop forwarding -Cprofile-generate/-Cprofile-use to the C compiler (#2003)
• do not apply target crt-static when target is overridden (#1999)

Other

• (parallel) poll for process exit on linux (#2009)
• document NVCC and other environment variables (#2005)
• (jobserver) poll for new token (#2004)
• (parallel) Use poll on unix (#2000)

Added

• add Tool::get_envs, deprecate Tool::env and store tool env as Arc<OsStr> pairs (#1985)
• link c++ when Clang uses libc++ (#1978)
• add CC_MASM_ASM and fall back to llvm-ml for MASM files (#1975)

Fixed

• (target parsing) for powerpc64-ibm-aix abi (#1989)
• ignore ASCII case in program name checks (#1981)

Other

• (compile) issue compilation cmds more frequently in parallel #1997 #1998
• (cache) Optimize tool detection caching (#1995)
• (cache) optimize EnvSnapshot Hash, PartialEq, Ord impl (#1994)
• Regenerate target info (#1988)

Added

• add Build::create_archive and emit_link_directives (#1972)
• read the process environment once per Build, on first use (#1969)
• add Build::message_logger for structured access to cc's messages (#1967)
• add CXXSTDLIB_STATIC to link the C++ stdlib statically from outside (#1957)

Fixed

• key the flag support cache on target, host, language and environment (#1965)
• forward each line of compiler stderr once and whole with parallel (#1959)

Other

• find compile commands by source file so tests pass with parallel (#1973)
• add support for armeb-unknown-linux-gnueabi (#1958)

Fixed

• Make windows_sys more private and re-export types needed by cc-rs (#1944)

Fixed

• link the static C++ stdlib with -bundle, once per Build (#1955)

Other

• Use lp64d ABI for Redox riscv64 (#1953)

Added

• inherit x86 target features from RUSTFLAGS (#1948)

Fixed

• don't report the file name cl.exe echoes as a warning in expand() (#1950)
• ignore MSVC /link flags with a warning (#1949)
• Make windows_sys more private and re-export types needed by cc-rs (#1944)
• pass -Tp on MSVC for .cc so they are not treated as objects (#1930)

Other

• document macOS SDKROOT and Xcode CLT for testing (#1943)
• remove License section from CONTRIBUTING.md (#1942)
• add CONTRIBUTING.md and Conventional Commit PR title check (#1938)

Fixed

• Pass -Tp immediately before .cc sources on MSVC (not clang-cl) when compiling C++ so they are not treated as object files (#1877)

Other

• Regenerate windows sys bindings (#1926 #1919)