Created attachment 170491 [details] Disable some overloaded math functions for libc++ 3.8.0 and higher During the exp-run in bug 208158, it was found that graphics/embree gives errors with libc++ 3.8.0 [1]: /wrkdirs/usr/ports/graphics/embree/work/embree-2.7.0/tutorials/common/tutorial/tutorial_device.cpp:270:39: error: call to 'abs' is ambiguous Vec3fa col = Vec3fa(min(1.f,.3f+.8f*abs(dot(Ng,normalize(ray.dir))))); ^~~ This is because embree defines its own version of a number of <cmath> functions, which cause the ambiguity. These functions are only declared in <cmath> for libc++ 3.8.0 and later, so fix it by disabling the custom functions for those versions of libc++. [1] http://package18.nyi.freebsd.org/data/headamd64PR208158-default/2016-05-01_10h29m48s/logs/errors/embree-2.7.0_1.log
A commit references this bug: Author: danfe Date: Sun May 29 15:02:04 UTC 2016 New revision: 416111 URL: https://svnweb.freebsd.org/changeset/ports/416111 Log: Disable some overloaded math functions for libc++ 3.8.0 and higher, and thus unbreak the build. This is because this port defines its own versions of a number of <cmath> functions, which cause the ambiguity. These functions are only declared in <cmath> for libc++ 3.8.0 and later, so fix it by disabling the custom functions for those versions of libc++. PR: 209652 Submitted by: dim Changes: head/graphics/embree/files/patch-common_math_math.h
Committed as ports r416111, thank you!