Bug 883971

Summary:	sci-mathematics/flint-2.9.0 fails to compile (CLANG-STRICTER-SYSTEM): mul_blas.c:24:10: fatal error: cblas.h file not found
Product:	Gentoo Linux	Reporter:	Agostino Sarubbo <ago>
Component:	Current packages	Assignee:	Michael Orlitzky <mjo>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	frp.bissey, proxy-maint
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	build.log

Description Agostino Sarubbo gentoo-dev

2022-12-02 06:54:48 UTC

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

Issue: sci-mathematics/flint-2.9.0 fails to compile (CLANG-STRICTER-SYSTEM).
Discovered on: amd64 (internal ref: clang-stricter_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

Comment 1 Agostino Sarubbo gentoo-dev

2022-12-02 06:54:51 UTC

Created attachment 838891 [details]
build.log

build log and emerge --info

Comment 2 Michael Orlitzky gentoo-dev

2022-12-20 02:27:29 UTC

Something is very strange here. The flint-2.9.0 ebuild has,

  DEPEND="dev-libs/gmp:=                                                                                                                                                       
    dev-libs/mpfr:=                                                                                                                                                          
    ntl? ( dev-libs/ntl:= )                                                                                                                                                  
    virtual/cblas"

yet you don't have virtual/cblas installed when you try to build flint. You *do* have both virtual/lapack and virtual/blas installed, both of which should pull in sci-libs/lapack as well. But regardless, sci-libs/lapack is not installed somehow, which is why cblas.h is missing...

Comment 3 Michael Orlitzky gentoo-dev

2022-12-20 02:42:56 UTC

Oh, right, this felt very familiar: bug 860018.

*** This bug has been marked as a duplicate of bug 787032 ***