[MacPorts] #61849: gobject-introspection: Configure failure on Big Sur 11.1 and Xcode 12.3

[MacPorts]

#61849: gobject-introspection: Configure failure on Big Sur 11.1 and Xcode 12.3
------------------------------------+----------------------
  Reporter:  mf2k                   |      Owner:  dbevans
      Type:  defect                 |     Status:  assigned
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:
Resolution:                         |   Keywords:
      Port:  gobject-introspection  |
------------------------------------+----------------------
Description changed by mf2k:

Old description:

> gobject-introspection fails to configure with Big Sur 11.1 and Xcode 12.3
> and the latest command line tools installed. It seems to want SDK 11.0
> but it should be using SDK 11.1.
>
> Is this a base issue?
>
> {{{
> :debug:extract
> SDKROOT='/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk'
> ...
> :info:configure     /usr/bin/clang -pipe -Os -DNDEBUG
> -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk  -arch
> x86_64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk
> -mmacosx-version-min=11.0 -Wl,-search_paths_first
> -Wl,-headerpad_max_install_names -Wl,-headerpad_max_install_names -liconv
> -Wl,-syslibroot,/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk
> CMakeFiles/cmTC_b03d4.dir/testCCompiler.c.o -o cmTC_b03d4
> :info:configure     ld: library not found for -lSystem
> :info:configure     clang: error: linker command failed with exit code 1
> (use -v to see invocation)
> :info:configure     make[1]: *** [cmTC_b03d4] Error 1
> :info:configure     make: *** [cmTC_b03d4/fast] Error 2
> }}}
>
> Here is what I have installed:
> {{{
> $ ls -l /Library/Developer/CommandLineTools/SDKs/
> total 0
> lrwxr-xr-x  1 root  wheel   14 Dec 14 13:41 MacOSX.sdk -> MacOSX11.1.sdk
> drwxr-xr-x  7 root  wheel  224 Nov 12  2019 MacOSX10.14.sdk
> drwxr-xr-x  8 root  wheel  256 Dec 14 13:41 MacOSX10.15.sdk
> drwxr-xr-x  4 root  wheel  128 Dec 14 13:41 MacOSX11.0.sdk
> drwxr-xr-x  7 root  wheel  224 Nov 30 05:33 MacOSX11.1.sdk
> }}}
>
> and
>
> {{{
> $ xcrun --show-sdk-path
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
>
> $ xcrun --show-sdk-version
> 11.1
> }}}

New description:

 gobject-introspection fails to configure with Big Sur 11.1 and Xcode 12.3
 and the latest command line tools installed. It seems to want SDK 11.0 but
 it should be using SDK 11.1.

 Is this a base issue?

 {{{
 :debug:extract
 SDKROOT='/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk'
 ...
 :info:configure checking for gcc... /usr/bin/clang
 :info:configure checking whether the C compiler works... no
 :info:configure configure: error: in `/opt/local/var/macports/build
 /_opt_mports_macports-ports_gnome_gobject-introspection/gobject-
 introspection/work/gobject-introspection-1.60.2':
 :info:configure configure: error: C compiler cannot create executables
 :info:configure See `config.log' for more details
 }}}

 Here is what I have installed:
 {{{
 $ ls -l /Library/Developer/CommandLineTools/SDKs/
 total 0
 lrwxr-xr-x  1 root  wheel   14 Dec 14 13:41 MacOSX.sdk -> MacOSX11.1.sdk
 drwxr-xr-x  7 root  wheel  224 Nov 12  2019 MacOSX10.14.sdk
 drwxr-xr-x  8 root  wheel  256 Dec 14 13:41 MacOSX10.15.sdk
 drwxr-xr-x  4 root  wheel  128 Dec 14 13:41 MacOSX11.0.sdk
 drwxr-xr-x  7 root  wheel  224 Nov 30 05:33 MacOSX11.1.sdk
 }}}

 and

 {{{
 $ xcrun --show-sdk-path
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk

 $ xcrun --show-sdk-version
 11.1
 }}}

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Ticket URL: <https://trac.macports.org/ticket/61849#comment:1>
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