--- a/CMakeLists.txt	2026-05-08 12:16:05.000000000 +0200
+++ b/CMakeLists.txt	2026-10-19 21:08:04.130202552 +0200
@@ -290,7 +290,7 @@ if(WITH_GUI)
 endif()
 
 add_custom_target(
-  ALL_MODULES
+  ALL_MODULES ALL
   DEPENDS ${modules_list}
   COMMENT "Building all modules.")
 set_target_properties(ALL_MODULES PROPERTIES FOLDER Misc)
@@ -302,6 +302,8 @@ if(WITH_DOCS)
   install(DIRECTORY ${OUTDIR}/${GRASS_INSTALL_MANDIR}/ DESTINATION ${GRASS_INSTALL_MANDIR})
 endif()
 
+# the thumbnails are drawn with the built modules
+if(NOT CMAKE_CROSSCOMPILING)
 add_custom_target(
   r_colors_thumbnails ALL
   COMMAND ${CMAKE_COMMAND} -E make_directory
@@ -314,6 +316,7 @@ add_custom_target(
 set_target_properties(r_colors_thumbnails PROPERTIES FOLDER Misc)
 install(DIRECTORY ${OUTDIR}/${GRASS_INSTALL_DOCDIR}/colortables
         DESTINATION ${GRASS_INSTALL_DOCDIR})
+endif()
 
 set(misc_files
     AUTHORS
--- a/general/CMakeLists.txt	2026-05-08 12:16:05.000000000 +0200
+++ b/general/CMakeLists.txt	2026-10-19 21:08:04.130281801 +0200
@@ -13,6 +13,8 @@ build_program_in_subdir(g.mkfontcap DEPE
 add_dependencies(g.mkfontcap fonts)
 
 # TODO(FHS): revert GRASS_INSTALL_ETCBINDIR to GRASS_INSTALL_ETCDIR
+# the font list is generated by running the built g.mkfontcap
+if(NOT CMAKE_CROSSCOMPILING)
 add_custom_command(
   TARGET g.mkfontcap
   POST_BUILD
@@ -20,6 +22,7 @@ add_custom_command(
           > ${OUTDIR}/${GRASS_INSTALL_ETCBINDIR}/fontcap)
 install(FILES ${OUTDIR}/${GRASS_INSTALL_ETCBINDIR}/fontcap
         DESTINATION ${GRASS_INSTALL_ETCBINDIR})
+endif()
 build_program_in_subdir(g.parser DEPENDS grass_gis)
 build_program_in_subdir(g.pnmcomp DEPENDS grass_gis)
 build_program_in_subdir(g.ppmtopng DEPENDS grass_gis PRIMARY_DEPENDS PNG::PNG)