GNU bug report logs - #31998
Guile 2.2.3 fails to install with BSD sed

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Subject: Guile 2.2.3 fails to install with BSD sed
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Guile 2.2.3 fails to install when BSD sed was found by the configure =
script. It works fine if GNU sed was found.

The error we see is:

sed: -i may not be used with stdin

This problem was reported to MacPorts here:

https://trac.macports.org/ticket/56748

The problem was introduced in this commit:

This problem was introduced in =
http://git.savannah.gnu.org/cgit/guile.git/commit/libguile/Makefile.am?id=3D=
81d2e352663bc5f80734312fec90f250b1fbe2e4

The problem is happening in libguile/Makefile.am which says:

INSTANTIATE =3D                                                          =
         \
  $(SED) -e 's,[@]pkgdatadir[@],$(pkgdatadir),g'                         =
       \
         -e 's,[@]pkglibdir[@],$(pkglibdir),g'                           =
       \
         -e =
's,[@]GUILE_EFFECTIVE_VERSION[@],$(GUILE_EFFECTIVE_VERSION),g'      \
         -i

This usage of the -i flag (without an argument) is only compatible with =
GNU sed. BSD sed requires an argument.

Unfortunately I don't know of a way to specify that there should be no =
backup file made that is compatible with both GNU and BSD sed. BSD sed =
requires a space between the flag and the argument if the argument is =
the empty string, like this: "-i ''"; "-i" and "-i''" are considered =
errors. Conversely, GNU sed requires "-i" or "-i''"; "-i ''" is an =
error. The only solution I know of is to specify a nonempty backup file =
suffix, which will cause a backup file to be created, e.g. "-i.bak".

If you want to be truly portable, I'm told you have to avoid the -i flag =
entirely, because it's not in POSIX.