-- Add LD_LIBRARY_PATH to the test environment on FreeBSD/Linux.
-- Lake-built shared objects have no RPATH embedded, so the dynamic linker cannot
-- find libLake_shared.so at test runtime without LD_LIBRARY_PATH.
--- tests/CMakeLists.txt.orig	2026-05-26 17:39:45 UTC
+++ tests/CMakeLists.txt
@@ -38,6 +38,12 @@ string(APPEND TEST_VARS " CXX='${CMAKE_CXX_COMPILER} $
 # LEANC_OPTS in CXX is necessary for macOS c++ to find its headers
 string(APPEND TEST_VARS " CXX='${CMAKE_CXX_COMPILER} ${LEANC_OPTS}'")
 
+# FreeBSD/Linux: lake-built shared objects have no rpath embedded, so we need
+# LD_LIBRARY_PATH to find libLake_shared.so and other lean shared libs at test runtime.
+if(CMAKE_SYSTEM_NAME MATCHES "FreeBSD|Linux")
+  string(APPEND TEST_VARS " LD_LIBRARY_PATH='${MANGLED_BINARY_DIR}/lib/lean'")
+endif()
+
 set(WITH_TEST_ENV "${CMAKE_CURRENT_SOURCE_DIR}/with_stage${STAGE}_test_env.sh")
 set(WITH_BENCH_ENV "${CMAKE_CURRENT_SOURCE_DIR}/with_stage${STAGE}_bench_env.sh")