Bug 647090

Summary:	media-libs/mesa-18.0.0_r3 - libtool: ld glsl/.libs/libstandalone.a: /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/32/libstdc++.so: undefined reference to `pthread_create'
Product:	Gentoo Linux	Reporter:	Chris Chan <cryptopsy>
Component:	Current packages	Assignee:	Gentoo X packagers <x11>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	emerge --info build.log (middle truncated) build log compressed

Description Chris Chan 2018-02-09 06:56:54 UTC

could it be related to flto?

Comment 1 Chris Chan 2018-02-09 06:57:25 UTC

Created attachment 518718 [details]
emerge --info

Comment 2 Chris Chan 2018-02-09 06:59:52 UTC

Created attachment 518720 [details]
build.log (middle truncated)

Comment 3 Jeroen Roovers (RETIRED) gentoo-dev

2018-02-10 12:00:21 UTC

(In reply to Chris Chan from comment #2)
> Created attachment 518720 [details]
> build.log (middle truncated)

Why truncated? The answer is usually to compress the file before uploading it.

Comment 4 Jeroen Roovers (RETIRED) gentoo-dev

2018-02-10 12:02:02 UTC

libtool: link: x86_64-pc-linux-gnu-g++ -m32 -fvisibility=hidden -Werror=pointer-arith -Werror=vla -march=native -O3 -pipe -flto -Wall -fno-math-errno -fno-trapping-math -Wl,-O1 -Wl,--as-needed -o glsl_compiler glsl/main.o  glsl/.libs/libstandalone.a -lz -lpthread -pthread
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/32/libstdc++.so: undefined reference to `pthread_create'

Comment 5 cryptopsy 2018-02-14 11:06:52 UTC

Created attachment 519408 [details]
build log compressed

Comment 6 Matt Turner gentoo-dev

2018-03-01 06:59:42 UTC

Yes, it's because of -flto.

*** This bug has been marked as a duplicate of bug 641808 ***