svn commit: r325954 - in head: . share/mk sys/conf usr.sbin/config

[Mark Millard]

Pedro Giffuni pfg at FreeBSD.org wrote on
Sun Nov 19 15:29:33 UTC 2017 :

> Yes, we should 
> avoid breaking existing stuff (however old) in ports but no one is 
> expecting to build modern FreeBSD with gcc 3.4 or even gcc 4.1. We did 
> what we could with gcc 4.2.1 but it's time is also over.

Unfortunately for powerpc64 no alternative
works fully. For example:

A) With a buildworld by clang and C++ programs linked against
   the system libraries, any C++ exception thrown causes the
   program to crash: clang generates bad code in the library.

B) Modern gcc's build a lib32 based on generating a messed up
   crtbeginS.o content (bad register usage) and so 32-bit
   programs crash.

As far as I know gcc 4.2.1 is still the only environment that
generally works for powerpc64.

[There is no devel/powerpc-gcc like there is a devel/powerpc64-gcc
and I've never managed to to make a working powerpc build from a
gcc other than 4.2.1 . (A) prevents clang from counting as working
overall. So powerpc may be in the same boat as powerpc64 as far as
having a known way to build without gcc 4.2.1 goes.]

===
Mark Millard
markmi at dsl-only.net