Index: lib/asan/tests/CMakeLists.txt
===================================================================
--- lib/asan/tests/CMakeLists.txt
+++ lib/asan/tests/CMakeLists.txt
@@ -70,7 +70,13 @@
 
 set(ASAN_UNITTEST_NOINST_LINKFLAGS
   ${ASAN_UNITTEST_COMMON_LINKFLAGS}
-  -ldl -lm)
+  -lm)
+
+# There's no libdl on FreeBSD.
+if(NOT CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
+  list(APPEND ASAN_UNITTEST_NOINST_LINKFLAGS -ldl)
+endif()
+
 if(NOT ANDROID)
   list(APPEND ASAN_UNITTEST_NOINST_LINKFLAGS -lpthread)
 endif()
Index: lib/msan/tests/CMakeLists.txt
===================================================================
--- lib/msan/tests/CMakeLists.txt
+++ lib/msan/tests/CMakeLists.txt
@@ -61,10 +61,15 @@
 )
 set(MSAN_UNITTEST_LINK_FLAGS
   -fsanitize=memory
-  -ldl
   # FIXME: we build libcxx without cxxabi and need libstdc++ to provide it.
   -lstdc++
 )
+
+# There's no libdl on FreeBSD.
+if(NOT CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
+  list(APPEND MSAN_UNITTEST_LINK_FLAGS -ldl)
+endif()
+
 set(MSAN_LOADABLE_LINK_FLAGS
   -fsanitize=memory
   -shared
Index: lib/sanitizer_common/tests/CMakeLists.txt
===================================================================
--- lib/sanitizer_common/tests/CMakeLists.txt
+++ lib/sanitizer_common/tests/CMakeLists.txt
@@ -41,7 +41,12 @@
   -Wall -Werror -Werror=sign-compare)
 
 set(SANITIZER_TEST_LINK_FLAGS_COMMON
-  -lstdc++ -ldl)
+  -lstdc++)
+
+# There's no libdl on FreeBSD.
+if(NOT CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
+  list(APPEND SANITIZER_TEST_LINK_FLAGS_COMMON -ldl)
+endif()
 
 include_directories(..)
 include_directories(../..)