Make building with LTO work on macOS When building with -flto, the backend binary must keep many otherwise unused symbols to make them available to dynamically loaded modules / extensions. This has been done via -Wl,--export-dynamic on many platforms for years. This flag is not supported by the macOS linker, though. Here it's called -Wl,-export_dynamic instead. Thus, make configure pick up on this variant of the flag as well. Meson has the logic upstream as of version 1.5.0. Without this fix, building with -flto fails with errors similar to [1] and [2]. [1]: https://postgr.es/m/1581936537572-0.post%40n3.nabble.com [2]: https://postgr.es/m/21800.1499270547%40sss.pgh.pa.us Author: Wolfgang Walther <walther@technowledgy.de> Discussion: https://www.postgresql.org/message-id/flat/427c7c25-e8e1-4fc5-a1fb-01ceff185e5b@technowledgy.de Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/73275f093f8969f4d2353fcc803377350aa650f6 Modified Files -------------- configure | 43 +++++++++++++++++++++++++++++++++++++++++++ configure.ac | 6 ++++++ 2 files changed, 49 insertions(+)
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