[MacPorts] #70811: libvpx @1.13.1_0 build failure: 'string' file not found

[MacPorts]

#70811: libvpx @1.13.1_0 build failure: 'string' file not found
------------------------+----------------------
  Reporter:  amadeus24  |      Owner:  mascguy
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  libvpx     |
------------------------+----------------------

Comment (by amadeus24):

 {{{
 # -> ls -la /Library/Developer/CommandLineTools/usr/include/c++
 total 0
 drwxr-xr-x   3 root  wheel   96 Aug  8  2022 .
 drwxr-xr-x   6 root  wheel  192 Sep 18 18:16 ..
 drwxr-xr-x  13 root  wheel  416 Sep 22  2023 v1
 }}}

 and content of v1:
 {{{
 # -> ls -la /Library/Developer/CommandLineTools/usr/include/c++/v1/
 total 24
 drwxr-xr-x  13 root  wheel   416 Sep 22  2023 .
 drwxr-xr-x   3 root  wheel    96 Aug  8  2022 ..
 drwxr-xr-x   3 root  wheel    96 Sep 17  2023 __bit
 drwxr-xr-x   5 root  wheel   160 Sep 17  2023 __charconv
 drwxr-xr-x   9 root  wheel   288 Sep 17  2023 __compare
 drwxr-xr-x  24 root  wheel   768 Sep 17  2023 __concepts
 -rw-r--r--   1 root  wheel  3142 Oct 18  2022 __cxxabi_config.h
 drwxr-xr-x  14 root  wheel   448 Sep 22  2023 __format
 drwxr-xr-x   4 root  wheel   128 Sep 22  2023 __functional
 drwxr-xr-x   3 root  wheel    96 Sep 22  2023 __iterator
 drwxr-xr-x   9 root  wheel   288 Sep 22  2023 __ranges
 drwxr-xr-x   3 root  wheel    96 Sep 22  2023 __utility
 -rw-r--r--   1 root  wheel  7215 Oct 18  2022 cxxabi.h
 }}}

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Ticket URL: <https://trac.macports.org/ticket/70811#comment:3>
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