diff --git a/CMakeLists.txt b/CMakeLists.txt
index 65cf26ff75e..505eeafff46 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -842,7 +842,12 @@ if(CONFIG_LEGACY_GENERATED_INCLUDE_PATH)
     ${CMAKE_CURRENT_BINARY_DIR}/include/generated/syscall_list.h)
 endif()
 
-add_custom_command(OUTPUT include/generated/zephyr/syscall_dispatch.c ${syscall_list_h}
+add_custom_command(
+  OUTPUT
+  include/generated/zephyr/syscall_dispatch.c
+  include/generated/zephyr/syscall_exports_llext.c
+  syscall_weakdefs_llext.c
+  ${syscall_list_h}
   # Also, some files are written to include/generated/zephyr/syscalls/
   COMMAND
   ${PYTHON_EXECUTABLE}
@@ -850,7 +855,8 @@ add_custom_command(OUTPUT include/generated/zephyr/syscall_dispatch.c ${syscall_
   --json-file        ${syscalls_json}                     # Read this file
   --base-output      include/generated/zephyr/syscalls    # Write to this dir
   --syscall-dispatch include/generated/zephyr/syscall_dispatch.c # Write this file
-  --syscall-export-llext  include/generated/zephyr/syscall_export_llext.c
+  --syscall-exports-llext  include/generated/zephyr/syscall_exports_llext.c
+  --syscall-weakdefs-llext syscall_weakdefs_llext.c # compiled in CMake library 'syscall_weakdefs'
   --syscall-list     ${syscall_list_h}
   $<$<BOOL:${CONFIG_USERSPACE}>:--gen-mrsh-files>
   ${SYSCALL_LONG_REGISTERS_ARG}
@@ -1009,6 +1015,16 @@ else()
   set(NO_WHOLE_ARCHIVE_LIBS kernel)
 endif()
 
+if(CONFIG_LLEXT)
+  # LLEXT exports symbols for all syscalls, including unimplemented ones.
+  # Weak definitions for these must be added at the end of the link order
+  # to avoid shadowing actual implementations.
+  add_library(syscall_weakdefs syscall_weakdefs_llext.c)
+  add_dependencies(syscall_weakdefs zephyr_generated_headers)
+  target_link_libraries(syscall_weakdefs zephyr_interface)
+  list(APPEND NO_WHOLE_ARCHIVE_LIBS syscall_weakdefs)
+endif()
+
 get_property(OUTPUT_FORMAT        GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT)
 
 if (CONFIG_CODE_DATA_RELOCATION)
diff --git a/scripts/build/gen_syscalls.py b/scripts/build/gen_syscalls.py
index 607445ce129..d2bb3249a81 100755
--- a/scripts/build/gen_syscalls.py
+++ b/scripts/build/gen_syscalls.py
@@ -158,10 +158,14 @@ syscall_tracer_void_template = """
 """
 
 
-exported_template = """
+llext_weakdefs_template = """/* auto-generated by gen_syscalls.py, don't edit */
+
+#include <zephyr/toolchain.h>
+#include <zephyr/llext/symbol.h>
+
 /*
  * This symbol is placed at address 0 by llext-sections.ld. Its value and
- * type is not important, we are only interested in its location
+ * type is not important, we are only interested in its location.
  */
 static void * const no_syscall_impl Z_GENERIC_SECTION(llext_no_syscall_impl);
 
@@ -171,6 +175,19 @@ static void * const no_syscall_impl Z_GENERIC_SECTION(llext_no_syscall_impl);
  * an extension requiring them is loaded.
  */
 %s
+"""
+
+
+llext_exports_template = """/* auto-generated by gen_syscalls.py, don't edit */
+
+/*
+ * Export the implementation functions of all emitted syscalls.
+ * Only the symbol names are relevant in this file, they will be
+ * resolved to the actual implementation functions by the linker.
+ */
+
+/* Symbol declarations */
+%s
 
 /* Exported symbols */
 %s
@@ -435,8 +452,10 @@ def parse_args():
                         help="Indicates we are on system with 64-bit registers")
     parser.add_argument("--gen-mrsh-files", action="store_true",
                         help="Generate marshalling files (*_mrsh.c)")
-    parser.add_argument("-e", "--syscall-export-llext",
+    parser.add_argument("-e", "--syscall-exports-llext",
                         help="output C system call export for extensions")
+    parser.add_argument("-w", "--syscall-weakdefs-llext",
+                        help="output C system call weak definitions")
     parser.add_argument("-u", "--userspace-only", action="store_true",
                         help="Only generate the userpace path of wrappers")
     args = parser.parse_args()
@@ -498,14 +517,23 @@ def main():
         fp.write(table_template % (weak_defines,
                                    ",\n\t".join(table_entries)))
 
-    if args.syscall_export_llext:
-        with open(args.syscall_export_llext, "w") as fp:
-            # Export symbols for emitted syscalls
+    exported.sort()
+
+    if args.syscall_weakdefs_llext:
+        with open(args.syscall_weakdefs_llext, "w") as fp:
+            # Provide weak definitions for all emitted syscalls
             weak_refs = "\n".join("extern __weak ALIAS_OF(no_syscall_impl) void * const %s;"
                                   % e for e in exported)
+            fp.write(llext_weakdefs_template % weak_refs)
+
+    if args.syscall_exports_llext:
+        with open(args.syscall_exports_llext, "w") as fp:
+            # Export symbols for emitted syscalls
+            extern_refs = "\n".join("extern void * const %s;"
+                                  % e for e in exported)
             exported_symbols = "\n".join("EXPORT_SYMBOL(%s);"
                                          % e for e in exported)
-            fp.write(exported_template % (weak_refs, exported_symbols))
+            fp.write(llext_exports_template % (extern_refs, exported_symbols))
 
     # Listing header emitted to stdout
     ids_emit.sort()
diff --git a/subsys/llext/llext_export.c b/subsys/llext/llext_export.c
index d2d117ec6ff..42fa3410947 100644
--- a/subsys/llext/llext_export.c
+++ b/subsys/llext/llext_export.c
@@ -16,4 +16,4 @@ EXPORT_SYMBOL(memcmp);
 EXPORT_SYMBOL(memcpy);
 EXPORT_SYMBOL(memset);
 
-#include <zephyr/syscall_export_llext.c>
+#include <zephyr/syscall_exports_llext.c>