--- chibio/CMakeLists.txt	2026-10-17 21:19:24.790916321 +0200
+++ chibi-scheme-0.12/CMakeLists.txt	2026-10-17 21:22:51.277207361 +0200
@@ -159,8 +159,10 @@ else()
 
     set(bootstrap-build-dir "${CMAKE_CURRENT_BINARY_DIR}/bootstrap-build")
 
+    # not with the target compiler and flags from the environment
     execute_process(
-        COMMAND "${CMAKE_COMMAND}"
+        COMMAND "${CMAKE_COMMAND}" -E env --unset=CC --unset=CFLAGS
+            --unset=CPPFLAGS --unset=LDFLAGS "${CMAKE_COMMAND}"
             -B "${bootstrap-build-dir}"
             -S "${CMAKE_CURRENT_SOURCE_DIR}"
         COMMAND_ECHO STDERR
@@ -614,7 +616,8 @@ add_custom_command(OUTPUT snow.img
         -d ${CMAKE_CURRENT_BINARY_DIR}/snow.img
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 
-if(BUILD_SHARED_LIBS)
+# the images are dumped by the target chibi-scheme
+if(BUILD_SHARED_LIBS AND NOT CMAKE_CROSSCOMPILING)
     # Currently, image dumps only work with shared library builds, which includes Windows
     add_custom_target(chibi-images ALL
         DEPENDS
@@ -691,7 +694,7 @@ install(FILES
     doc/chibi-doc.1
     DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
 
-if(BUILD_SHARED_LIBS)
+if(BUILD_SHARED_LIBS AND NOT CMAKE_CROSSCOMPILING)
     install(FILES
         ${CMAKE_CURRENT_BINARY_DIR}/chibi.img
         ${CMAKE_CURRENT_BINARY_DIR}/red.img