This patch comes from Gentoo:
 portage/media-gfx/prusaslicer/files/prusaslicer-2.5.0_rc1-fix-tests.patch

--- a/tests/fff_print/test_data.cpp
+++ b/tests/fff_print/test_data.cpp
@@ -4,10 +4,9 @@
 #include "libslic3r/GCodeReader.hpp"
 #include "libslic3r/Config.hpp"
 #include "libslic3r/Print.hpp"
-#include "libslic3r/Format/OBJ.hpp"
-#include "libslic3r/Format/STL.hpp"

 #include <cstdlib>
+#include <fstream>
 #include <string>

 #include <boost/nowide/cstdio.hpp>
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<div class='path'>path: <a href='/guix/log/?id=c11195cac3e9ef1625d54bcdbbbcd7a11dc78040'>root</a>/<a href='/guix/log/nix?id=c11195cac3e9ef1625d54bcdbbbcd7a11dc78040'>nix</a>/<a href='/guix/log/nix/libutil?id=c11195cac3e9ef1625d54bcdbbbcd7a11dc78040'>libutil</a>/<a href='/guix/log/nix/libutil/hash.hh?id=c11195cac3e9ef1625d54bcdbbbcd7a11dc78040'>hash.hh</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/nix/libutil/hash.hh?id=c11195cac3e9ef1625d54bcdbbbcd7a11dc78040&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-06-27 23:42:20 +0200'>2020-06-27</span></td><td><a href='/guix/commit/nix/libutil/hash.hh?id=8e6c1415d87272c0221ce328715fc0dd1dd3e032'>daemon: Recognize SHA3 and BLAKE2s.</a><span class='msg-avail'>...<span class='msg-tooltip'>* nix/libutil/hash.hh (HashType): Add htSHA3_256, htSHA3_512, and
htBLAKE2s_256.
* nix/libutil/hash.cc (parseHashType, printHashType): Recognize them.
* tests/store.scm ("add-to-store"): Test these algorithms.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-06-27 23:42:20 +0200'>2020-06-27</span></td><td><a href='/guix/commit/nix/libutil/hash.hh?id=3fb6b8f30444d41963ba5bdd441123a6d2df17bd'>daemon: Map directly to gcrypt hash functions.</a><span class='msg-avail'>...<span class='msg-tooltip'>* nix/libutil/hash.hh (HashType): Map directly to GCRY_MD_ values.
(md5HashSize, sha1HashSize, sha256HashSize, sha512HashSize): Remove.
* nix/libutil/hash.cc (Hash::Hash): Use 'gcry_md_get_algo_dlen'.
</span></span></td><td>Ludovic Courtès</td></tr>