gentoo-overlay/media-libs/gd/files/gd-2.2.2-osx-libtool.patch

https://bugs.gentoo.org/583584
https://github.com/libgd/libgd/issues/241

From dd6615fd138e53656a7883015d4a6b2d02292b26 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Sat, 21 May 2016 15:00:53 -0400
Subject: [PATCH] libtool: rework revision to fix OS X breakage

It seems the OS X linker restricts the revision field to 8 bits.
Rework how we calculate that value and pack it in closer to fit.
It might produce some collisions if we get to like 2.2.8, but oh
well ... this field doesn't need to be super exact.

Fixes #214 and fixes #241.
---
 configure.ac | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/configure
+++ b/configure
@@ -2460,7 +2460,12 @@ AC_SUBST(GDLIB_VERSION)
 # See http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
 
 GDLIB_LT_CURRENT=3
+# This is the version where the soname (current above) changes.  We use it
+# to reset the revision base back to zero.  It's a bit of a pain, but some
+# systems restrict the revision range below to [0..255] (like OS X).
+GDLIB_PREV_MAJOR=2
+GDLIB_PREV_MINOR=2
-GDLIB_LT_REVISION=$(printf '%i%02i%02i' $GDLIB_MAJOR $GDLIB_MINOR $GDLIB_REVISION)
+GDLIB_LT_REVISION=$(( ((GDLIB_MAJOR - GDLIB_PREV_MAJOR) << 6) | ((GDLIB_MINOR - GDLIB_PREV_MINOR) << 3) | GDLIB_REVISION ))
 GDLIB_LT_AGE=0
 
 
-- 
2.8.2