Bug#17435338 ADD A -DWITH_ASAN SWITCH/OPTION TO OUR CMAKE SCRIPTS

Tested with:
gcc (GCC) 4.8.1 20130603 (Red Hat 4.8.1-1)

clang version 3.1 (tags/RELEASE_31/final)
Target: x86_64-apple-darwin10.8.0

CMakeLists.txt

@@ -177,7 +177,83 @@ ENDIF()
 OPTION (WITH_UNIT_TESTS "Compile MySQL with unit tests" ON)
 MARK_AS_ADVANCED(CYBOZU BACKUP_TEST WITHOUT_SERVER DISABLE_SHARED)
 
- 
+
+
+include(CheckCSourceCompiles)
+include(CheckCXXSourceCompiles)
+# We need some extra FAIL_REGEX patterns
+# Note that CHECK_C_SOURCE_COMPILES is a misnomer, it will also link.
+MACRO (MY_CHECK_C_COMPILER_FLAG FLAG RESULT)
+  SET(SAVE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
+  SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${FLAG}")
+  CHECK_C_SOURCE_COMPILES("int main(void) { return 0; }" ${RESULT}
+    FAIL_REGEX "argument unused during compilation"
+    FAIL_REGEX "unsupported .*option"
+    FAIL_REGEX "unknown .*option"
+    FAIL_REGEX "unrecognized .*option"
+    FAIL_REGEX "ignoring unknown option"
+    FAIL_REGEX "[Ww]arning: [Oo]ption"
+    )
+  SET(CMAKE_REQUIRED_FLAGS "${SAVE_CMAKE_REQUIRED_FLAGS}")
+ENDMACRO()
+
+MACRO (MY_CHECK_CXX_COMPILER_FLAG FLAG RESULT)
+  SET(SAVE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
+  SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${FLAG}")
+  CHECK_CXX_SOURCE_COMPILES("int main(void) { return 0; }" ${RESULT}
+    FAIL_REGEX "argument unused during compilation"
+    FAIL_REGEX "unsupported .*option"
+    FAIL_REGEX "unknown .*option"
+    FAIL_REGEX "unrecognized .*option"
+    FAIL_REGEX "ignoring unknown option"
+    FAIL_REGEX "[Ww]arning: [Oo]ption"
+    )
+  SET(CMAKE_REQUIRED_FLAGS "${SAVE_CMAKE_REQUIRED_FLAGS}")
+ENDMACRO()
+
+OPTION(WITH_ASAN "Enable address sanitizer" OFF)
+IF (WITH_ASAN)
+  # gcc 4.8.1 and new versions of clang
+  MY_CHECK_C_COMPILER_FLAG("-fsanitize=address" HAVE_C_FSANITIZE)
+  MY_CHECK_CXX_COMPILER_FLAG("-fsanitize=address" HAVE_CXX_FSANITIZE)
+
+  IF(HAVE_C_FSANITIZE AND HAVE_CXX_FSANITIZE)
+    # We switch on basic optimization also for debug builds.
+    # With optimization we may get some warnings, so we switch off -Werror
+    SET(CMAKE_C_FLAGS_DEBUG
+      "${CMAKE_C_FLAGS_DEBUG} -fsanitize=address -O1 -Wno-error -fPIC")
+    SET(CMAKE_C_FLAGS_RELWITHDEBINFO
+      "${CMAKE_C_FLAGS_RELWITHDEBINFO} -fsanitize=address -fPIC")
+    SET(CMAKE_CXX_FLAGS_DEBUG
+      "${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=address -O1 -Wno-error -fPIC")
+    SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO
+      "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -fsanitize=address -fPIC")
+    SET(WITH_ASAN_OK 1)
+  ELSE()
+    # older versions of clang
+    MY_CHECK_C_COMPILER_FLAG("-faddress-sanitizer" HAVE_C_FADDRESS)
+    MY_CHECK_CXX_COMPILER_FLAG("-faddress-sanitizer" HAVE_CXX_FFADDRESS)
+
+    IF(HAVE_C_FADDRESS AND HAVE_CXX_FFADDRESS)
+      # We switch on basic optimization also for debug builds.
+      SET(CMAKE_C_FLAGS_DEBUG
+        "${CMAKE_C_FLAGS_DEBUG} -faddress-sanitizer -O1 -fPIC")
+      SET(CMAKE_C_FLAGS_RELWITHDEBINFO
+        "${CMAKE_C_FLAGS_RELWITHDEBINFO} -faddress-sanitizer -fPIC")
+      SET(CMAKE_CXX_FLAGS_DEBUG
+        "${CMAKE_CXX_FLAGS_DEBUG} -faddress-sanitizer -O1 -fPIC")
+      SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO
+        "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -faddress-sanitizer -fPIC")
+      SET(WITH_ASAN_OK 1)
+    ENDIF()
+  ENDIF()
+
+  IF(NOT WITH_ASAN_OK)
+    MESSAGE(FATAL_ERROR "Do not know how to enable address sanitizer")
+  ENDIF()
+ENDIF()
+
+
 OPTION(ENABLE_DEBUG_SYNC "Enable debug sync (debug builds only)" ON) 
 IF(ENABLE_DEBUG_SYNC) 
   SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DENABLED_DEBUG_SYNC")