Build: Add -DASAN option to build with AddressSanitizer support

Use this option only for debugging purposes.

CMakeLists.txt

@@ -92,6 +92,7 @@ mark_as_advanced(
 
 option(BUILD_TEST_SUITE "Build the test suite" 0)
 option(BUILD_MAN "Build man pages" 1)
+option(ASAN "DEBUGGING: Build with AddressSanitizer (ASan) support" 0)
 
 set(ZM_RUNDIR "/var/run/zm" CACHE PATH
   "Location of transient process files, default: /var/run/zm")

cmake/compiler/clang/settings.cmake

@@ -1,3 +1,21 @@
 target_compile_options(zm-warning-interface
   INTERFACE
     -Wall)
+
+if(ASAN)
+  target_compile_options(zm-compile-option-interface
+    INTERFACE
+      -fno-omit-frame-pointer
+      -fsanitize=address
+      -fsanitize-recover=address
+      -fsanitize-address-use-after-scope)
+
+  target_link_options(zm-compile-option-interface
+    INTERFACE
+      -fno-omit-frame-pointer
+      -fsanitize=address
+      -fsanitize-recover=address
+      -fsanitize-address-use-after-scope)
+
+  message(STATUS "Clang: Enabled AddressSanitizer (ASan)")
+endif()

cmake/compiler/gcc/settings.cmake

@@ -1,3 +1,21 @@
 target_compile_options(zm-warning-interface
   INTERFACE
     -Wall)
+
+if(ASAN)
+  target_compile_options(zm-compile-option-interface
+    INTERFACE
+      -fno-omit-frame-pointer
+      -fsanitize=address
+      -fsanitize-recover=address
+      -fsanitize-address-use-after-scope)
+
+  target_link_options(zm-compile-option-interface
+    INTERFACE
+      -fno-omit-frame-pointer
+      -fsanitize=address
+      -fsanitize-recover=address
+      -fsanitize-address-use-after-scope)
+
+  message(STATUS "GCC: Enabled AddressSanitizer (ASan)")
+endif()