On Sunday, July 6, 2025, at 12:50 AM +0200, Frank Heckenbach wrote: > Could libabsl be built with ABSL_USES_STD_STRING_VIEW, > ABSL_OPTION_USE_STD_OPTIONAL, ABSL_OPTION_USE_STD_VARIANT and > similar settings?
Yes, but it’s not going to happen in trixie. :| For background, ABSL_USES_STD_STRING_VIEW and friends have been in Abseil for a while to support projects that are still using C++14 (or earlier). Happily, Abseil upstream has officially dropped support for C++14, and the latest release of Abseil no longer even has these #defines. Unfortunately, trixie was frozen before that release, so trixie will ship with absl::string_view != std::string_view. forky will be the first release to have have absl::string_view == std::string_view everywhere. I know this is probably not the answer you wanted to hear, and I’m sorry that RE2’s switch to absl::string_view is creating work for you. I think the simplest solution right now would be to switch to building Abseil and RE2 as part of your project rather than using the ones packaged in trixie; that would let you get the seamless C++17 experience rather than the static_cast-prone old one. (You should rebuild both Abseil and RE2 – a from-source Abseil will generally have a different ABI than Abseil in trixie, so trying to link the trixie RE2 against a from-source Abseil is likely to result in complex and subtle bugs.) Benjamin
