[MacPorts] #63879: gcc-devel @12-20211107_0 build fails: libgcc_tm.h not found

[MacPorts]

#63879: gcc-devel @12-20211107_0 build fails: libgcc_tm.h not found
--------------------+-----------------------
 Reporter:  ednl    |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  gcc-devel
--------------------+-----------------------
 While updating because `gcc-devel 12-20211028_0 < 12-20211107_0` the build
 fails when `libgcc_tm.h` is not found. However, when searching manually, I
 did find it at
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_lang_gcc-devel/gcc-
 devel/work/build/aarch64-apple-darwin21/libgcc/libgcc_tm.h`. From the log:

 {{{
 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_lang_gcc-devel/gcc-devel/work/gcc-
 darwin-
 arm64-75d53e7d110e49268429958cf2ca0686697d54d8/libgcc/config/darwin10
 -unwind-find-enc-func.c:4:10: fatal error: libgcc_tm.h: No such file or
 directory
 :info:build     4 | #include "libgcc_tm.h"
 :info:build       |          ^~~~~~~~~~~~~
 }}}

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Ticket URL: <https://trac.macports.org/ticket/63879>
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