RelNotes: add details on Perl module changes

Document changes to core and non-core Perl module handling in 2.17. Signed-off-by: Todd Zullinger <tmz@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Todd Zullinger committed Mar 16, 2018 at 18:07 UTC 14f437f3385db68275124d82bb9686cb6f75f67c
2 files changed +16 -1
Documentation/RelNotes/2.17.0.txt
+14
@@ -75,6 +75,20 @@ Performance, Internal Implementation, Development Support etc.
75 * The build procedure for perl/ part has been greatly simplified by
76 weaning ourselves off of MakeMaker.
77
78 + * Perl 5.8 or greater has been required since Git 1.7.4 released in
79 + 2010, but we continued to assume some core modules may not exist and
80 + used a conditional "eval { require <<module>> }"; we no longer do
81 + this. Some platforms (Fedora/RedHat/CentOS, for example) ship Perl
82 + without all core modules by default (e.g. Digest::MD5, File::Temp,
83 + File::Spec, Net::Domain, Net::SMTP). Users on such platforms may
84 + need to install these additional modules.
85 +
86 + * As a convenience, we install copies of Perl modules we require which
87 + are not part of the core Perl distribution (e.g. Error and
88 + Mail::Address). Users and packagers whose operating system provides
89 + these modules can set NO_PERL_CPAN_FALLBACKS to avoid installing the
90 + bundled modules.
91 +
92 * In preparation for implementing narrow/partial clone, the machinery
93 for checking object connectivity used by gc and fsck has been
94 taught that a missing object is OK when it is referenced by a
INSTALL
+2 -1
@@ -126,7 +126,8 @@ Issues of note:
126 Redhat/Fedora are reported to ship Perl binary package with some
127 core modules stripped away (see http://lwn.net/Articles/477234/),
128 so you might need to install additional packages other than Perl
129 - itself, e.g. Time::HiRes.
129 + itself, e.g. Digest::MD5, File::Spec, File::Temp, Net::Domain,
130 + Net::SMTP, and Time::HiRes.
131
132 - git-imap-send needs the OpenSSL library to talk IMAP over SSL if
133 you are using libcurl older than 7.34.0. Otherwise you can use