[MacPorts] #62773: {lib}gcc10 @10.3.0: {lib}gcc10 failed to build from source on Big Sur 11.3

[MacPorts]

#62773: {lib}gcc10 @10.3.0: {lib}gcc10 failed to build from source on Big Sur 11.3
--------------------+---------------------------------
 Reporter:  ferdy   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.6.4
 Keywords:          |       Port:  {lib}gcc10 @ 10.3.0
--------------------+---------------------------------
 {lib}gcc at 10.3.0 fails to build from source on Big Sur 11.3

 please find /opt/mp/var/macports/logs/_opt_mp_macports-
 ports_lang_gcc10/libgcc10/main.log attached.

 == terminal input/output
 {{{
 ferdy at wabi:~$ sudo port clean --all --work gcc10 libgcc libgcc10
 --->  Cleaning gcc10
 --->  Cleaning libgcc
 --->  Cleaning libgcc10
 ferdy at wabi:~$ sudo port -sv install libgcc10
 <...>
 make[2]: *** [compare] Error 1
 make[2]: Leaving directory `/opt/mp/var/macports/build/_opt_mp_macports-
 ports_lang_gcc10/libgcc10/work/build'
 make[1]: *** [stage3-bubble] Error 2
 make[1]: Leaving directory `/opt/mp/var/macports/build/_opt_mp_macports-
 ports_lang_gcc10/libgcc10/work/build'
 make: *** [bootstrap-lean] Error 2
 make: Leaving directory `/opt/mp/var/macports/build/_opt_mp_macports-
 ports_lang_gcc10/libgcc10/work/build'
 Command failed:  cd "/opt/mp/var/macports/build/_opt_mp_macports-
 ports_lang_gcc10/libgcc10/work/build" && /usr/bin/make -j16 -w bootstrap-
 lean
 Exit code: 2
 Error: Failed to build libgcc10: command execution failed
 Error: See /opt/mp/var/macports/logs/_opt_mp_macports-
 ports_lang_gcc10/libgcc10/main.log for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port libgcc10 failed
 }}}


 == system information
 {{{
 ferdy at wabi:~$ sw_vers
 ProductName:    macOS
 ProductVersion: 11.3
 BuildVersion:   20E232
 ferdy at wabi:~$ uname -a
 Darwin wabi.ferdy.lan 20.4.0 Darwin Kernel Version 20.4.0: Fri Mar  5
 01:14:14 PST 2021; root:xnu-7195.101.1~3/RELEASE_X86_64 x86_64 i386
 MacBookPro16,1 Darwin
 ferdy at wabi:~$ xcodebuild -version
 Xcode 12.5
 Build version 12E262
 ferdy at wabi:~$ xcode-select -version
 xcode-select version 2384.
 ferdy at wabi:~$ port version
 Version: 2.6.4
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/62773>
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