[C] Implement --sanitise-build support.

Author: vyazelenko

CMakeLists.txt

@@ -75,10 +75,13 @@ endif ()
 
 find_package(Threads)
 
+# all UNIX-based platform compiler flags
 if (UNIX)
-    add_compile_options(-Wall -Wpedantic -Wextra -Wno-unused-parameter)
+    add_compile_options(-fstrict-aliasing -Wall -Wpedantic -Wextra -Wno-unused-parameter -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer)
 
-    if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "21.0")
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "11.0")
+        add_compile_options(-Wno-error=maybe-uninitialized)
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "21.0")
         # See gtest: https://github.com/google/googletest/issues/4762
         add_compile_options(-Wno-error=character-conversion)
     endif ()
@@ -90,13 +93,28 @@ if (UNIX)
     if (CXX_WARNINGS_AS_ERRORS)
         add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-Werror>)
     endif (CXX_WARNINGS_AS_ERRORS)
+
+    if (SANITISE_BUILD)
+        if (NOT DEFINED APPLE)
+            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fsanitize=leak -fsanitize=undefined")
+            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fsanitize=leak -fsanitize=undefined")
+        endif ()
+    endif (SANITISE_BUILD)
 endif ()
 
+# platform specific flags
 if (APPLE)
-    # -Wall doesn't enable everything we want to see
     add_compile_options(-Wsign-compare)
     add_definitions(-DDarwin)
     add_compile_options(-Wno-deprecated-register)
+
+    if (SANITISE_BUILD)
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fsanitize=undefined")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fsanitize=undefined")
+    endif (SANITISE_BUILD)
+elseif (CYGWIN)
+    add_definitions(-DWIN32)
+    set(CMAKE_CXX_EXTENSIONS ON)
 elseif (MSVC)
     add_definitions(-DWIN32)
     add_definitions(-D_CRT_SECURE_NO_WARNINGS)
@@ -108,10 +126,15 @@ elseif (MSVC)
         add_definitions(-D_ENABLE_EXTENDED_ALIGNED_STORAGE)
     endif ()
 
-    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd /Od /Zi /MP")
-    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MT /MP")
-    set(CMAKE_C_FLAGS_DEBUG "/MTd")
-    set(CMAKE_C_FLAGS_RELEASE "/MT")
+    add_compile_options(/Oy-)
+    add_compile_options($<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:RELEASE>>:/MD>)
+    add_compile_options($<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:DEBUG>>:/MDd>)
+    add_compile_options($<$<COMPILE_LANGUAGE:CXX>:/MP>)
+    add_compile_options($<$<COMPILE_LANGUAGE:CXX>:/wd4251>)
+    add_compile_options($<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:RELEASE>>:/MD>)
+    add_compile_options($<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>:/MDd>)
+    add_compile_options($<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>:/Od>)
+    add_compile_options($<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>:/Zi>)
 
     if (C_WARNINGS_AS_ERRORS)
         add_compile_options($<$<COMPILE_LANGUAGE:C>:/WX>)
@@ -120,8 +143,12 @@ elseif (MSVC)
     if (CXX_WARNINGS_AS_ERRORS)
         add_compile_options($<$<COMPILE_LANGUAGE:CXX>:/WX>)
     endif (CXX_WARNINGS_AS_ERRORS)
-else ()
-    add_definitions(-D_GNU_SOURCE)
+
+    if (SANITISE_BUILD)
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /fsanitize=address /Zi")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /fsanitize=address /Zi")
+    endif (SANITISE_BUILD)
+
 endif ()
 
 set(LIBPREFIX "${CMAKE_STATIC_LIBRARY_PREFIX}")