tree a6b7b7938f405dd080b1581d45dbaa61f93fedc8
parent f4153a09f87cbb9c826d8fc12c74642bb2d879ea
author Ryan Schmidt <ryandesign@macports.org> 1652286039 -0500
committer GitHub <noreply@github.com> 1652286039 +0300
gpgsig -----BEGIN PGP SIGNATURE-----
 
 wsBcBAABCAAQBQJie+JXCRBK7hj4Ov3rIwAAVOsIABuITLFkX5BDN+otXQuBsTKb
 BdI98oUwLltNfVJ+nhlglZNJ/AdpLK5/PfkiRssidntqG+6LPFKmKeSspQDbWWoo
 J8Y0O8k4FVzs1eCyWTGVcmrdLwErAa7ad0UtWWM7o/kQ0YVZZGxPc+5h9UkL5kGd
 YpkAx/0SoLhbQx8HUt6T8L3wcyi418XBuHKzwTTswu908Lw3pajP6sjBoyuCREpV
 wdNAc79wByERrkcnYtveZ1eBvFfUOh13MDhcisbneVghZA2rhJP/h2g5V8CoKN0w
 Da4GVzrmMJRJmmX5dXgulj/+1+iZSzJ7lBe0udAquXvLRZ2Xd+wHxu3VpE0HzrM=
 =FYsC
 -----END PGP SIGNATURE-----
 

Fix bootstrap on macOS (#965)

* bootstrap: Verify functionality of sed

Check for the existence of sed by running a simple substitution rather
than using the --version flag. This lets us remove the weird exclusion
of FreeBSD from checking the sed requirement, and fixes checking the sed
requirement on other systems like macOS that use BSD sed, which doesn't
support --version.

* bootstrap: Detect flag for sed extended RE

Detect whether sed needs -E or -r to enable extended regular
expressions. Fixes bootstrap on macOS, whose BSD sed does not support
-r.

GNU sed has supported -E as a synonym for -r since version 4.2 (2009),
initially as an undocumented option for compatibility with BSD sed:

http://git.savannah.gnu.org/cgit/sed.git/commit/sed/sed.c?id=3a8e165ab02487c372df217c1989e287625ce0ae

and later as a documented option after -E became POSIX:

http://git.savannah.gnu.org/cgit/sed.git/commit/sed/sed.c?id=8b65e07904384b529a464c89f3739d2e7e4d5135