Backport build modes from 1.3
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 824624d..ebb29cd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,24 +6,35 @@
 string(REGEX MATCH "Clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER_ID}")
 
 if(CMAKE_COMPILER_IS_GNUCC)
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -W -Wdeclaration-after-statement")
-  set(CMAKE_C_FLAGS_RELEASE "-O2")
-  set(CMAKE_C_FLAGS_DEBUG "-g3 -O0")
-  set(CMAKE_C_FLAGS_COVERAGE "-g3 -O0 -fprofile-arcs -ftest-coverage -lgcov")
-  set(CMAKE_C_FLAGS_CHECK "${CMAKE_C_FLAGS} -Werror -Wlogical-op -Wwrite-strings")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -W -Wdeclaration-after-statement -Wwrite-strings -Wlogical-op")
+  set(CMAKE_C_FLAGS_RELEASE     "-O2")
+  set(CMAKE_C_FLAGS_DEBUG       "-O0 -g3")
+  set(CMAKE_C_FLAGS_COVERAGE    "-O0 -g3 --coverage")
+  set(CMAKE_C_FLAGS_ASAN        "-Werror -fsanitize=address -fno-common -O3")
+  set(CMAKE_C_FLAGS_ASANDBG     "-Werror -fsanitize=address -fno-common -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls ")
+  set(CMAKE_C_FLAGS_CHECK       "-Werror -O1")
+  set(CMAKE_C_FLAGS_CHECKFULL   "${CMAKE_C_FLAGS_CHECK} -Wcast-qual")
 endif(CMAKE_COMPILER_IS_GNUCC)
 
 if(CMAKE_COMPILER_IS_CLANG)
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -W -Wdeclaration-after-statement")
-  set(CMAKE_C_FLAGS_RELEASE "-O2")
-  set(CMAKE_C_FLAGS_DEBUG "-g3 -O0")
-  set(CMAKE_C_FLAGS_CHECK "${CMAKE_C_FLAGS} -Werror -Wpointer-arith -Wwrite-strings -Wdocumentation")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -W -Wdeclaration-after-statement -Wwrite-strings -Wpointer-arith")
+  set(CMAKE_C_FLAGS_RELEASE     "-O2")
+  set(CMAKE_C_FLAGS_DEBUG       "-O0 -g3")
+  set(CMAKE_C_FLAGS_COVERAGE    "-O0 -g3 --coverage")
+  set(CMAKE_C_FLAGS_ASAN        "-Werror -fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover -O3")
+  set(CMAKE_C_FLAGS_ASANDBG     "-Werror -fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls ")
+  set(CMAKE_C_FLAGS_MEMSAN      "-Werror -fsanitize=memory -O3")
+  set(CMAKE_C_FLAGS_MEMSANDBG   "-Werror -fsanitize=memory -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize-memory-track-origins=2")
+  set(CMAKE_C_FLAGS_CHECK       "-Werror -O1")
 endif(CMAKE_COMPILER_IS_CLANG)
 
 if(CMAKE_BUILD_TYPE STREQUAL "Coverage")
   if(CMAKE_COMPILER_IS_GNUCC)
-    set(CMAKE_SHARED_LINKER_FLAGS "-fprofile-arcs -ftest-coverage")
+    set(CMAKE_SHARED_LINKER_FLAGS "--coverage")
   endif(CMAKE_COMPILER_IS_GNUCC)
+  if(CMAKE_COMPILER_IS_CLANG)
+    set(CMAKE_SHARED_LINKER_FLAGS "--coverage")
+  endif(CMAKE_COMPILER_IS_CLANG)
 endif(CMAKE_BUILD_TYPE STREQUAL "Coverage")
 
 option(USE_PKCS11_HELPER_LIBRARY "Build PolarSSL with the pkcs11-helper library." OFF)