https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123976

--- Comment #61 from Peter Dyballa <Peter_Dyballa at web dot de> ---
First failure, due to too old makeinfo (GNU texinfo 4.8):

make  all-am
true  DO=all multi-do # make
make[3]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
if [ xinfo = xinfo ]; then \
                makeinfo --split-size=5000000 --split-size=5000000
--split-size=5000000 --no-split -I . -I ../../\
./gcc/doc \
                        -I ../.././gcc/doc/include -o doc/gccint.info
../.././gcc/doc/gccint.texi; \
        fi
../.././gcc/doc//ifn.texi:746: @code expected braces.
../.././gcc/doc//ifn.texi:746: Misplaced {.
../.././gcc/doc//ifn.texi:746: Misplaced }.
../.././gcc/doc//ifn.texi:759: @code expected braces.
../.././gcc/doc//ifn.texi:759: Misplaced {.
../.././gcc/doc//ifn.texi:759: Misplaced }.
../.././gcc/doc//ifn.texi:772: @code expected braces.
../.././gcc/doc//ifn.texi:772: Misplaced {.
../.././gcc/doc//ifn.texi:772: Misplaced }.
../.././gcc/doc//ifn.texi:772: @code missing close brace.
../.././gcc/doc//ifn.texi:759: @code missing close brace.
../.././gcc/doc//ifn.texi:746: @code missing close brace.
../.././gcc/doc//tm.texi:6723: warning: unlikely character [ in @var.
../.././gcc/doc//tm.texi:6723: warning: unlikely character ] in @var.
../.././gcc/doc//tm.texi:6723: warning: unlikely character [ in @var.
../.././gcc/doc//tm.texi:6723: warning: unlikely character ] in @var.
../.././gcc/doc//tm.texi:6723: warning: unlikely character [ in @var.
../.././gcc/doc//tm.texi:6723: warning: unlikely character ] in @var.
makeinfo: Removing output file `doc/gccint.info' due to errors; use --force to
preserve.

What to do now? Activate texinfo

The following dependencies will be installed: 
 gdbm 
 libunistring 
 perl5.38 
 readline 

and re-configure? Or would it suffice to set PATH accordingly, making make
prefer the MacPorts tools? Or switch off building documentation?

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