Error when compiling gcc9 with xcode11.1

[houzeaux]

1. Everything goes well with xcode11.0, but when installing gcc9 with xcode11.1 it fails (I followed exactly the migration procedure). I have the following:

sudo xcode-select --version => xcode-select version 2370.
xcrun --show-sdk-path => /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk

2. Then I tried to install gcc9

.....

Error: libgcc9 cannot be built while libunwind-headers is active.
Error: Please forcibly deactivate libunwind-headers, e.g. by running:
Error:
Error:     sudo port -f deactivate libunwind-headers
Error:
Error: Then try again. You can reactivate libunwind-headers again later.
Error: Failed to build libgcc9: libunwind-headers is active
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/libgcc9/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port gcc9 failed

3. I desactivated libunwind-headers

houzeaux:/Users/houzeaux/Desktop % sudo port -f deactivate libunwind-headers
Password:
--->  Deactivating libunwind-headers @5.0.1_0
--->  Cleaning libunwind-headers

4. I reinstall gcc9 and get the following message:

sudo port install gcc9
--->  Computing dependencies for gcc9
The following dependencies will be installed:
 libgcc
 libgcc9
Continue? [Y/n]: Y
--->  Fetching archive for libgcc9
--->  Attempting to fetch libgcc9-9.2.0_1.darwin_19.x86_64.tbz2 from http://lil.fr.packages.macports.org/libgcc9
--->  Attempting to fetch libgcc9-9.2.0_1.darwin_19.x86_64.tbz2 from http://nue.de.packages.macports.org/libgcc9
--->  Attempting to fetch libgcc9-9.2.0_1.darwin_19.x86_64.tbz2 from https://packages.macports.org/libgcc9
--->  Building libgcc9
Error: Failed to build libgcc9: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/libgcc9/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port gcc9 failed

5. I attach the log file

[houzeaux]

log file obtained after trying to install gcc9

[cjones051073 (Chris Jones)]

The build is not clean, the log has multiple instances of

:error:configure Please forcibly deactivate libunwind-headers, e.g. by running:
:error:configure     sudo port -f deactivate libunwind-headers
:error:configure Then try again. You can reactivate libunwind-headers again later.

please run

  sudo port sync
  sudo port -f deactivate libunwind-headers
  sudo port clean libgcc9
  sudo port install libgcc9

and post the log from that last step.