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Bug 608688

Summary: dev-db/mongodb fails to build with LTO
Product: Gentoo Linux Reporter: Amit Prakash Ambasta <amit.prakash.ambasta>
Component: Current packagesAssignee: Ultrabug <ultrabug>
Status: RESOLVED FIXED    
Severity: normal CC: jstein
Priority: Normal Keywords: EBUILD, PATCH, PullRequest
Version: unspecified   
Hardware: All   
OS: Linux   
See Also: https://github.com/gentoo/gentoo/pull/10904
Whiteboard:
Package list:
Runtime testing required: ---
Bug Depends on:    
Bug Blocks: 618550    
Attachments: mongodb-3.4.1.ebuild

Description Amit Prakash Ambasta 2017-02-09 06:12:36 UTC
Created attachment 462920 [details]
mongodb-3.4.1.ebuild

Hi,

Currently, mongodb fails to emerge at all when -flto=thin or -flto are included in CFLAGS with:

Compiler must support a thread local storage class for trivially constructible types


This is because while mongodb supports building with LTO, it requires an additional scons argument as:

scons_opts+=( --lto=on )

to be enabled. I'd recommend that the ebuilds support this feature either by detecting LTO in cflags or passing it on as a separate USE flag.

I'm attaching a working ebuild alongwith for reference.
Comment 1 Larry the Git Cow gentoo-dev 2019-03-04 01:35:48 UTC
The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=020f4bb69894058b9a5fc7342aaeb3fa06c9e957

commit 020f4bb69894058b9a5fc7342aaeb3fa06c9e957
Author:     Tomas Mozes <hydrapolic@gmail.com>
AuthorDate: 2019-01-26 05:26:46 +0000
Commit:     Thomas Deutschmann <whissi@gentoo.org>
CommitDate: 2019-03-04 00:47:28 +0000

    dev-db/mongodb: bump to 4.0.5
    
    Signed-off-by: Tomas Mozes <hydrapolic@gmail.com>
    Closes: https://bugs.gentoo.org/673776
    Closes: https://bugs.gentoo.org/608688
    Closes: https://bugs.gentoo.org/673512
    Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

 dev-db/mongodb/Manifest             |   1 +
 dev-db/mongodb/mongodb-4.0.5.ebuild | 164 ++++++++++++++++++++++++++++++++++++
 2 files changed, 165 insertions(+)