Fix for building with cereal>=1.3.1.
This patch comes from Gentoo:
 portage/media-gfx/prusaslicer/files/prusaslicer-2.5.0_rc1-cereal-1.3.1.patch

--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -127,7 +127,7 @@
     set_target_properties(PrusaSlicer PROPERTIES OUTPUT_NAME "prusa-slicer")
 endif ()

-target_link_libraries(PrusaSlicer libslic3r cereal)
+target_link_libraries(PrusaSlicer libslic3r libcereal)

 if (APPLE)
 #    add_compile_options(-stdlib=libc++)
--- a/src/slic3r/CMakeLists.txt
+++ b/src/slic3r/CMakeLists.txt
@@ -260,7 +260,7 @@

 encoding_check(libslic3r_gui)

-target_link_libraries(libslic3r_gui libslic3r avrdude cereal imgui GLEW::GLEW OpenGL::GL hidapi libcurl ${wxWidgets_LIBRARIES})
+target_link_libraries(libslic3r_gui libslic3r avrdude libcereal imgui GLEW::GLEW OpenGL::GL hidapi libcurl ${wxWidgets_LIBRARIES})

 if (MSVC)
     target_link_libraries(libslic3r_gui Setupapi.lib)
--- a/src/libslic3r/CMakeLists.txt
+++ b/src/libslic3r/CMakeLists.txt
@@ -395,7 +395,7 @@
 target_link_libraries(libslic3r
     libnest2d
     admesh
-    cereal
+    libcereal
     libigl
     miniz
     boost_libs
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -446,6 +446,12 @@

 # Find the Cereal serialization library
 find_package(cereal REQUIRED)
+add_library(libcereal INTERFACE)
+if (NOT TARGET cereal::cereal)
+    target_link_libraries(libcereal INTERFACE cereal)
+else()
+    target_link_libraries(libcereal INTERFACE cereal::cereal)
+endif()

 # l10n
 set(L10N_DIR "${SLIC3R_RESOURCES_DIR}/localization")
 value='0258ddf18326e14d70e733273d8bbe6f42aac0e0'/><select name='qt'>
<option value='grep'>log msg</option>
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</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=0258ddf18326e14d70e733273d8bbe6f42aac0e0'>root</a>/<a href='/guix/log/guix.scm?id=0258ddf18326e14d70e733273d8bbe6f42aac0e0'>guix.scm</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/guix.scm?id=0258ddf18326e14d70e733273d8bbe6f42aac0e0&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-07-12 01:17:45 +0200'>2022-07-12</span></td><td><a href='/guix/commit/guix.scm?id=4574ef267e543bcac97d9c400f30cb731df29181'>guix: Really export 'define-public'.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to 3858275962f1ac567b5dce2355035f9eddea0a05, which
didn't have any effect.

* guix.scm: Explicitly use (guix packages) so #:re-export-and-replace
is effective.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-09-14 11:50:58 +0200'>2021-09-14</span></td><td><a href='/guix/commit/guix.scm?id=3858275962f1ac567b5dce2355035f9eddea0a05'>guix: Replace 'define-public'.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to 8531997d2a1e10d574a6e9ab70bc86ade6af4733.

* guix.scm: Use #:re-export-and-replace for 'define-public'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-06-29 00:00:13 +0200'>2021-06-29</span></td><td><a href='/guix/commit/guix.scm?id=e059adcb6001ab0353d969b24030d0c342f8830e'>(guix) no longer pulls in (guix ftp-client).</a><span class='msg-avail'>...<span class='msg-tooltip'>That choice was made in 2014 and never made much sense.

* guix.scm (%public-modules): Remove 'ftp-client'.
</span></span></td><td>Ludovic Courtès</td></tr>