commit:     b36f6d0b0366f389a35e547d4b79881c11e354a3
Author:     Kent Fredric <kentnl <AT> gentoo <DOT> org>
AuthorDate: Sun May 21 13:54:15 2017 +0000
Commit:     Kent Fredric <kentnl <AT> gentoo <DOT> org>
CommitDate: Sun May 21 15:05:01 2017 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b36f6d0b

dev-lang/perl: Use modulo arithmetic to determine subslot from version

Package-Manager: Portage-2.3.5, Repoman-2.3.2

 dev-lang/perl/perl-5.26.9999.ebuild | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/dev-lang/perl/perl-5.26.9999.ebuild 
b/dev-lang/perl/perl-5.26.9999.ebuild
index 58540d5d313..5cc952c7498 100644
--- a/dev-lang/perl/perl-5.26.9999.ebuild
+++ b/dev-lang/perl/perl-5.26.9999.ebuild
@@ -19,15 +19,17 @@ PERL_BIN_OLDVERSEN=""
 PERL_OLDVERSEN="5.26.0-RC1 5.25.12 5.25.11 5.24.2 5.24.1 5.24.0 5.22.3 5.22.2 
5.22.1 5.22.0"
 if [[ "${PV##*.}" == "9999" ]]; then
        DIST_VERSION=5.26.0-RC1
-       # Devel Releases are not ABI-intercompatible
-       # remove only trailing RC
-       SUBSLOT="${DIST_VERSION%-RC*}"
 else
        DIST_VERSION="${PV/_rc/-RC}"
-       # First 2 digits only
-       SUBSLOT="${DIST_VERSION%.*}"
 fi
 SHORT_PV="${DIST_VERSION%.*}"
+# Even numbered major versions are ABI intercompatible
+# Odd numbered major versions are not
+if [[ $(( "${SHORT_PV#*.}" % 2 )) == 1 ]]; then
+       SUBSLOT="${DIST_VERSION%-RC*}"
+else
+       SUBSLOT="${DIST_VERSION%.*}"
+fi
 # Used only in tar paths
 MY_P="perl-${DIST_VERSION}"
 # Used in library paths

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