Bug 887733

Summary:	[guru] media-fonts/unscii-2.1 overwrites user's optimization (-O*)
Product:	GURU	Reporter:	Agostino Sarubbo <ago>
Component:	Package issues	Assignee:	Haelwenn (lanodan) Monnier <contact>
Status:	CONFIRMED ---
Severity:	normal	CC:	guru-bugs
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	785607
Attachments:	build.log

Description Agostino Sarubbo gentoo-dev

2022-12-21 15:43:55 UTC

https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/

Issue: media-fonts/unscii-2.1 overwrites user's optimization (-O*).
Discovered on: amd64 (internal ref: guru_tinderbox)

NOTE:
(CLANG-STRICTER-SYSTEM) in the summary means that the bug was found on a machine that runs clang with stricter mode

This machine uses clang with CFLAGS/CXXFLAGS=-Werror=implicit-function-declaration -Werror=implicit-int -Werror=incompatible-function-pointer-types

See also:
https://archives.gentoo.org/gentoo-dev/message/dd9f2d3082b8b6f8dfbccb0639e6e240
https://wiki.gentoo.org/wiki/Modern_C_porting
man gcc says:
"If you use multiple -O options, with or without level numbers, the last such option is the one that is effective".

So, since the build system adds -O* after -O* provided by my CFLAGS/CXXFLAGS means that it is overwritten and unless there are known issues with -O* configured by the user, the build system should not overwrite -O*.

Comment 1 Agostino Sarubbo gentoo-dev

2022-12-21 15:43:57 UTC

Created attachment 844537 [details]
build.log

build log and emerge --info