[MacPorts] #63351: py-grpcio fails to build

[MacPorts]

#63351: py-grpcio fails to build
-------------------------+--------------------------
  Reporter:  mouse07410  |      Owner:  emcrisostomo
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  py-grpcio   |
-------------------------+--------------------------

Comment (by mouse07410):

 > your log has so many errors (hundreds) that it is hard to know where to
 begin.

 The ones I showed above are the first, so might as well begin from/with
 them.

 > Let's start with this basic one...
 > What SDK are we attempting to build against? Does it actually exist on
 your system?

 {{{
 $ xcrun --show-sdk-path
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
 $ xcrun --show-sdk-platform-version
 11.3
 $ xcrun --show-sdk-platform-path
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform
 $ xcrun --show-sdk-platform-version
 11.3
 $ clang -v
 Apple clang version 12.0.5 (clang-1205.0.22.11)
 Target: x86_64-apple-darwin20.6.0
 Thread model: posix
 InstalledDir:
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
 $ ll -d
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
 drwxr-xr-x  5 ur20980  MITLL\Domain Users  160 Jun 22 20:53
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs//
 $ ll
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
 total 0
 drwxr-xr-x  5 ur20980  MITLL\Domain Users  160 Jun 22 20:53 ./
 drwxr-xr-x  6 ur20980  MITLL\Domain Users  192 Jun  8 20:37 ../
 drwxr-xr-x  5 ur20980  MITLL\Domain Users  160 Mar 16 10:03
 DriverKit20.4.sdk/
 drwxr-xr-x  7 ur20980  MITLL\Domain Users  224 Mar 16 10:03 MacOSX.sdk/
 lrwxr-xr-x  1 ur20980  MITLL\Domain Users   10 Jun 22 20:51
 MacOSX11.3.sdk@ -> MacOSX.sdk
 $
 }}}

 > and after that, perhaps for a whole new area of trying to sort things
 out, can you show us what this file looks like?:
 > {{{cat work/compwrap/cc/usr/bin/clang}}}

 It would be easier if you told me where I should look for the relative
 directory {{{work/compwrap/.....}}}:
 {{{
 $ cat
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_grpc/py39-grpcio/work/compwrap/objc/usr/bin/clang
 #!/bin/bash
 exec /usr/bin/clang   -Os -I/opt/local/include
 -isysroot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk
 -pipe ${MACPORTS_LEGACY_SUPPORT_CPPFLAGS}  "${@}"
 $
 }}}

 Note: I've seen that the invocation (erroneously) requests
 MacOS**11.3**.sdk instead of MacOS**11**.sdk, it appears to fail to
 resolve symlinks and find some header files. So, it may be that the given
 {{{-isysroot}}} is killing the build, I'm not sure. That would be an Apple
 bug, but it's easier/quicker for Macports to work around it, than to wait
 for Apple to get off their tail and fix it.

-- 
Ticket URL: <https://trac.macports.org/ticket/63351#comment:6>
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