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Bug 863716 - sys-apps/uutils-0.0.14 fails to compile (lto): undefined reference to onig_region_free
Summary: sys-apps/uutils-0.0.14 fails to compile (lto): undefined reference to onig_re...
Status: CONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Luca Barbato
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: lto
  Show dependency tree
 
Reported: 2022-08-05 07:07 UTC by Agostino Sarubbo
Modified: 2022-08-05 07:07 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---


Attachments
build.log (build.log,653.44 KB, text/plain)
2022-08-05 07:07 UTC, Agostino Sarubbo
Details

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Description Agostino Sarubbo gentoo-dev 2022-08-05 07:07:36 UTC
https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/

Issue: sys-apps/uutils-0.0.14 fails to compile (lto).
Discovered on: amd64 (internal ref: lto_tinderbox)

NOTE:
This machine uses lto with CFLAGS=-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing

Here is a bit of explanation:

-Werror=lto-type-mismatch:
User to find possible runtime issues in packages. It likely means the package is unsafe to build & use with LTO.
For projects using the same identifier but with different types across different files, they must be fixed to be consistent across the codebase.

-Werror=odr:
Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. C++ code must comply with the One Definition Rule (ODR) - see https://en.cppreference.com/w/cpp/language/definition#One_Definition_Rule.

-Werror=strict-aliasing:
Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO.

Workarounds:
- If upstream is friendly and still active, file a bug upstream. For emulators, codecs, games, or multimedia packages, it may be worth just applying a workaround instead, as upstreams sometimes aren't receptive to these bugs (VALID FOR ALL).
- Use the new 'filter-lto' from flag-o-matic.eclass as it's likely to be unsafe with LTO (VALID FOR lto-type-mismatch - odr).
- Fix it yourself if interested, of course (VALID FOR ALL).
- Append-flags -fno-strict-aliasing (VALID FOR strict-aliasing).
- Use memcpy() but a union is sometimes suitable too (VALID FOR strict-aliasing).
- -fstrict-aliasing is implied by -O2, so this must be addressed in some form (VALID FOR strict-aliasing).

See also: https://marc.info/?l=gentoo-dev&m=165639574126280&w=2
Comment 1 Agostino Sarubbo gentoo-dev 2022-08-05 07:07:39 UTC
Created attachment 797818 [details]
build.log

build log and emerge --info
Comment 2 Agostino Sarubbo gentoo-dev 2022-08-05 07:07:41 UTC
Error(s) that match a know pattern in addition to what has been reported in the summary:


          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: /var/tmp/portage/sys-apps/uutils-0.0.14/work/coreutils-0.0.14/target/release/deps/libonig-3ecdd96966c821df.rlib(onig-3ecdd96966c821df.onig.67290157-cgu.1.rcgu.o): in function `onig::Error::new':
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0x1c1): undefined reference to `onig_free_match_param'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0x33): undefined reference to `onig_initialize_match_param'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0x4c): undefined reference to `onig_get_encoding'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0x53): undefined reference to `OnigEncodingUTF8'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0x95): undefined reference to `onig_search_with_param'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0xbc): undefined reference to `onig_free_match_param'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0xdb): undefined reference to `OnigEncodingUTF8'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0xec): undefined reference to `onig_get_encoding'
          /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: onig.67290157-cgu.1:(.text._ZN4onig5Regex25with_options_and_encoding17ha248c0683d886993E+0xc6): undefined reference to `onig_new'
          onig.67290157-cgu.1:(.text._ZN4core3ptr41drop_in_place$LT$onig..region..Region$GT$17ha3cc0605c4cbe147E+0x4): undefined reference to `onig_region_free'
          onig.67290157-cgu.1:(.text._ZN4core3ptr50drop_in_place$LT$onig..match_param..MatchParam$GT$17h45ff8bed5892a8e2E+0x5): undefined reference to `onig_free_match_param'
          onig.67290157-cgu.1:(.text._ZN4onig4find29_$LT$impl$u20$onig..Regex$GT$8captures17h623e34308cfc2f0cE+0x9a): undefined reference to `onig_region_free'
          onig.67290157-cgu.1:(.text._ZN4onig5Error3new17h78cf2186aa1d5f41E+0x3f): undefined reference to `onig_error_code_to_str'
          onig.67290157-cgu.1:(.text._ZN4onig5Regex12captures_len17h82c120afbe3f968aE+0x6): undefined reference to `onig_number_of_captures'
          onig.67290157-cgu.1:(.text._ZN4onig5Regex20search_with_encoding17hd851970e63e9b550E.llvm.4542188737732145242+0x27): undefined reference to `onig_new_match_param'
          onig.67290157-cgu.1:(.text._ZN4onig5Regex25with_options_and_encoding17ha248c0683d886993E+0xb2): undefined reference to `OnigEncodingUTF8'
          onig.67290157-cgu.1:(.text._ZN4onig5Regex4find17h6cc55a86942553a1E+0x73): undefined reference to `onig_region_free'
          onig.67290157-cgu.1:(.text._ZN53_$LT$onig..Regex$u20$as$u20$core..ops..drop..Drop$GT$4drop17hba8c2f0fae4e332cE+0x5): undefined reference to `onig_free'
          onig.67290157-cgu.4:(.text._ZN4onig6syntax6Syntax4grep17hc8e41c954b13fbd1E+0x3): undefined reference to `OnigSyntaxGrep'
          onig.67290157-cgu.5:(.text._ZN62_$LT$onig..region..Region$u20$as$u20$core..ops..drop..Drop$GT$4drop17h11ef0e43e57a09aaE+0x4): undefined reference to `onig_region_free'
error: linking with `x86_64-pc-linux-gnu-gcc` failed: exit status: 1