package landmarks-speedscope

version 1.7, 19 jun 2026

• stabilize PPX-generated landmark ids across OCaml versions, simplify generated code, and stop auto-instrumenting object methods to avoid type errors (PR #53, @mlasson).
• add file-based PPX non-regression tests for generated code (PR #53, @mlasson).
• add support for OCaml 5.5 syntax in the PPX (PR #47, @brandonzstride)
• add Speedscope export format: set format=speedscope in OCAML_LANDMARKS to write a sampled flame-graph profile openable at https://www.speedscope.app (combine with time for second-precision weights). It is available via a new landmarks-speedscope library.
• add custom export format: set format=custom in OCAML_LANDMARKS and register your exporter using Landmark.register_exporter.

version 1.6, 12 may 2026

• adapt to ppxlib 0.36.0 (PR #45, @brandonzstride)

version 1.5, 14 jan 2025

• report allocations on major heap (PR #40, @edwinans)
• fix extra allocations for 'allocation' option (PR #40, @edwinans)
• add support for arm64 (M1 mac) (PR #35, @johnyob)
• add js_of_ocaml support. (PR #36, @mefyl)

version 1.4, 15 aug 2021

• switch to github actions
• add a link to https://github.com/LexiFi/landmarks-starter
• split landmarks into landmarks and landmarks-ppx
• enabled instrumentation (PR #23, @nojb)
• use floatarray #24 (@nojb)
• use ppxlib instead of OMP (PR #22)
• improvements on the doc and examples (PR #15, #16, @ostera)
• primitive support for objects (allow to annotate methods)
• dynamic landmarks
• auto now automatically benchmark all methods

version 1.3, 6 dec 2018

• migrate from jbuilder to dune
• migrate to opam 2.0
• adds two new primitives: push/pop_profiling_state
• prepare migration for Pervasives deprecation
• redefine 'Stdlib.raise' in the 'Landmark' to allow using landmark with -no-stdlib (as 'raise' is used to wrap exception in the generated code).

version 1.2, 20 may 2018

• improved documentation (issue #8, PR #11, @maroneze)
• migrate the build to dune/jbuilder
• support for OCAML 4.02 (issue #6)
• landmarks-viewer is now a separate git repository
• fix issue #13 (@pirbo & @nilsbecker)

version 1.1, 9 Jan 2017

• fix 'debug' option (issue #7)
• ability to specify a directory for outputing in temporary files (issue #4)
• fix problem with labelled argument (issue #3)
• prepend a digest to top-levels identifiers generated by the ppx rewriter to avoid name clashes (issue #2)
• module qualification of landmark names (issue #1)

version 1.0, 8 Jul 2016

• first release