Bug 919740

Summary:	sci-libs/lapack-3.12.0 fails to build with clang-17 and lto enabled
Product:	Gentoo Linux	Reporter:	Chris Pritchard <chris>
Component:	Current packages	Assignee:	Gentoo Science Related Packages <sci>
Status:	CONFIRMED ---
Severity:	normal	CC:	abbotta4
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	408963, 618550
Attachments:	build.log

Description Chris Pritchard 2023-12-11 23:14:13 UTC

lapack fails to build when testing for fortran during the configure phase with bfd as a linker.

Resolved by turning off LTO.

Comment 1 Chris Pritchard 2023-12-11 23:14:57 UTC

Created attachment 878819 [details]
build.log

main.c:(.text.main+0x15): undefined reference to `VerifyFortran' seems to be the main culprit!

Comment 2 Sam James archtester

2023-12-11 23:16:31 UTC

note wrt linker: We have to use bfd here because clang->gfortran (we don't have flang yet). with lld, we get the standard 'undefined reference to main' thing because lld doesn't support gcc lto.