1diff --git i/libtiff/Makefile.am w/libtiff/Makefile.am
2index 44522b62..d66e5948 100644
3--- i/libtiff/Makefile.am
4+++ w/libtiff/Makefile.am
5@@ -36,8 +36,11 @@ EXTRA_DIST = \
6 tiffconf.h.cmake.in
7
8 libtiffinclude_HEADERS = \
9+ tif_config.h \
10+ tif_dir.h \
11 tiff.h \
12 tiffio.h \
13+ tiffiop.h \
14 tiffvers.h
15
16 if HAVE_CXX