[MacPorts] #54643: Mesa at 17.1.6 fails to build with Apple GCC 4.2 on PPC Leopard, Mac OS X 10.6.8, because "thread-local storage not supported for this target"

[MacPorts]

#54643: Mesa at 17.1.6 fails to build with Apple GCC 4.2 on PPC Leopard, Mac OS X
10.6.8, because "thread-local storage not supported for this target"
------------------------+----------------------
  Reporter:  ballapete  |      Owner:
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.4.1
Resolution:             |   Keywords:  leopard,
      Port:  mesa       |
------------------------+----------------------

Comment (by kencu):

 You can't reliably combine c++ ports built with libc++ and gcc's libstdc++
 without eventually running into some kind of disaster, especially when you
 have something that is as integrated into other ports as much as `mesa`
 is. So you should build it with clang, and disable TLS.

 To build mesa on 10.6 with libc++, the following additions to the portfile
 are necessary, but not sufficient:
 {{{
 configure.args-append --disable-llvm-shared-libs
 configure.args-append --disable-glx-tls
 configure.cppflags-append -DO_CLOEXEC=0
 }}}

 after doing the steps mentioned, it will still fail to build due to
 [ticket:54638], which so far has no solution.

--
Ticket URL: <https://trac.macports.org/ticket/54643#comment:3>
MacPorts <https://www.macports.org/>
Ports system for macOS