[MacPorts] #43567: gtk3 upgrade failure

[MacPorts]

#43567: gtk3 upgrade failure
--------------------+--------------------
 Reporter:  mf2k@…  |      Owner:  cal@…
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.2.99
 Keywords:          |       Port:  gtk3
--------------------+--------------------
 I'm seeing a strange failure when upgrading gtk3.

 main.log says:
 {{{
 :info:configure checking whether the C compiler works... no
 :info:configure configure: error: in
 `/opt/local/var/macports/build/_opt_mports_trunk_dports_gnome_gtk3/gtk3/work/gtk+-3.12.1-x86_64':
 :info:configure configure: error: C compiler cannot create executables
 }}}

 I do, of course, have the latest Xcode CLT installed. config.log reveals
 this:

 {{{
 configure:4237: /usr/bin/clang {-arch x86_64} -pipe -Os -fstrict-aliasing
 {-arch x86_64} -I/opt/local/include -DX_LOCALE -L/opt/local/lib
 -Wl,-headerpad_max_install_names {-arch x86_64} conftest.c  >&5
 clang: error: no such file or directory: '{-arch'
 clang: error: no such file or directory: 'x86_64}'
 clang: error: no such file or directory: '{-arch'
 clang: error: no such file or directory: 'x86_64}'
 clang: error: no such file or directory: '{-arch'
 clang: error: no such file or directory: 'x86_64}'
 }}}

 Maybe this is an issue with the latest base? I updated it today from svn.

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Ticket URL: <https://trac.macports.org/ticket/43567>
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