https://bugs.gentoo.org/658536
https://github.com/madler/zlib/pull/229

From e490ddad3091574a0c2e3b5a66a8fee9a7ab212f Mon Sep 17 00:00:00 2001
From: Pavel Raiskup <praiskup@redhat.com>
Date: Sun, 19 Feb 2017 16:42:12 +0100
Subject: [PATCH] minizip: don't install crypt.h

People did mistakenly or unintentionally include crypt.h before,
don't install this internal header from now.
---
 contrib/minizip/Makefile.am | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/contrib/minizip/Makefile.am b/contrib/minizip/Makefile.am
index d343011ebc3b..4f46610238d2 100644
--- a/contrib/minizip/Makefile.am
+++ b/contrib/minizip/Makefile.am
@@ -26,13 +26,15 @@ libminizip_la_LDFLAGS = $(AM_LDFLAGS) -version-info 1:0:0 -lz
 
 minizip_includedir = $(includedir)/minizip
 minizip_include_HEADERS = \
-	crypt.h \
 	ioapi.h \
 	mztools.h \
 	unzip.h \
 	zip.h \
 	${iowin32_h}
 
+noinst_HEADERS = \
+	crypt.h
+
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = minizip.pc
 
-- 
2.17.1