Do not append -ldl for sanitizers' tests on FreeBSD

[samsonov]

I've submitted r202847 that should fix it in a different way.

[kutuzov.viktor.84]

I confirm that r202847 works as expected on FreeBSD 10.0. Thank you!

[jbeich]

lib/asan/tests/CMakeLists.txt

73

Better replace -ldl with ${CMAKE_DL_LIBS} unconditionally. Same in other files.

lib/asan/tests/CMakeLists.txt

 # On Android, we link with ASan runtime manually. On other platforms we depend
 # on Clang driver behavior, passing -fsanitize=address flag.
 if(NOT ANDROID)
   list(APPEND ASAN_UNITTEST_INSTRUMENTED_LINKFLAGS -fsanitize=address)
 endif()
 
 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()
 
 # Compile source for the given architecture, using compiler
 # options in ${ARGN}, and add it to the object list.
 macro(asan_compile obj_list source arch)
   get_filename_component(basename ${source} NAME)

lib/msan/tests/CMakeLists.txt

 set(MSAN_UNITTEST_INSTRUMENTED_CFLAGS
   ${MSAN_UNITTEST_COMMON_CFLAGS}
   -fsanitize=memory
   -fsanitize-memory-track-origins
   -mllvm -msan-keep-going=1
 )
 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
 )
 
 # Compile source for the given architecture, using compiler
 # options in ${ARGN}, and add it to the object list.
 macro(msan_compile obj_list source arch)

lib/sanitizer_common/tests/CMakeLists.txt

set(SANITIZER_TEST_CFLAGS_COMMON
   -I${COMPILER_RT_SOURCE_DIR}/include
   -I${COMPILER_RT_SOURCE_DIR}/lib
   -I${COMPILER_RT_SOURCE_DIR}/lib/sanitizer_common
   -DGTEST_HAS_RTTI=0
   -O2 -g -fno-rtti
   -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(../..)
 
 # Adds static library which contains sanitizer_common object file
 # (universal binary on Mac and arch-specific object files on Linux).
 macro(add_sanitizer_common_lib library)
   add_library(${library} STATIC ${ARGN})