examples: silence a couple of clang warnings
[libam7xxx.git] / CMakeLists.txt
index 3e525cc..49c3ac0 100644 (file)
@@ -6,7 +6,7 @@ set(PROJECT_DESCRIPTION
 
 set(PROJECT_VER_MAJOR 0)
 set(PROJECT_VER_MINOR 1)
-set(PROJECT_VER_PATCH 2)
+set(PROJECT_VER_PATCH 3)
 set(PROJECT_VER_EXTRA "")
 set(PROJECT_VER
   "${PROJECT_VER_MAJOR}.${PROJECT_VER_MINOR}.${PROJECT_VER_PATCH}${PROJECT_VER_EXTRA}")
@@ -31,7 +31,9 @@ macro(add_flags var)
   set(${var} "${${var}} ${_flags}")
 endmacro(add_flags)
 
-if (CMAKE_COMPILER_IS_GNUCC)
+string(REGEX MATCH "clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER}")
+
+if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
   add_definitions(-Wall)
 
   # let CFLAGS env override this
@@ -48,7 +50,6 @@ if (CMAKE_COMPILER_IS_GNUCC)
     -Winit-self
     -Winline
     -Wpacked
-    -Wp,-D_FORTIFY_SOURCE=2
     -Wpointer-arith
     -Wlarger-than-65500
     -Wmissing-declarations
@@ -64,31 +65,49 @@ if (CMAKE_COMPILER_IS_GNUCC)
     -Wswitch-enum
     -Wundef
     -Wunreachable-code
-    -Wunsafe-loop-optimizations
     -Wwrite-strings
-    -fstack-protector
-    --param=ssp-buffer-size=4)
-endif()
+    -fstack-protector)
 
-set(CMAKE_C_FLAGS_DEBUG "-O0 -ggdb -DDEBUG=1")
-set(CMAKE_C_FLAGS_RELEASE "-O2")
-set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 -g")
+  add_flags(DEBUG_FLAGS
+    -ggdb
+    -DDEBUG=1)
+
+  add_flags(RELEASE_FLAGS
+    -Wp,-D_FORTIFY_SOURCE=2)
 
-if (CMAKE_COMPILER_IS_GNUCC)
   if (STRICT_COMPILATION_CHECKS)
     add_flags(STRICT_FLAGS
       -Werror
+      -Wsign-conversion
       # NOTE: Vanilla libusb-1.0.8 can't live with -pedantic-errors
-      -pedantic-errors
+      -pedantic-errors)
+
+  endif()
+endif()
+
+if (CMAKE_COMPILER_IS_GNUCC)
+  add_flags(CMAKE_C_FLAGS
+    -Wunsafe-loop-optimizations
+    --param=ssp-buffer-size=4)
+
+  if (STRICT_COMPILATION_CHECKS)
+    add_flags(STRICT_FLAGS
       # NOTE: GCC >= 4.6 is needed for -Wunused-but-set-variable
       -Wunused-but-set-variable)
+  endif()
+endif()
 
-    add_flags(CMAKE_C_FLAGS_DEBUG ${STRICT_FLAGS})
-    add_flags(CMAKE_C_FLAGS_RELEASE ${STRICT_FLAGS})
-    add_flags(CMAKE_C_FLAGS_RELWITHDEBINFO ${STRICT_FLAGS})
+if (CMAKE_COMPILER_IS_CLANG)
+  if (STRICT_COMPILATION_CHECKS)
+    add_flags(STRICT_FLAGS
+      -Wshorten-64-to-32)
   endif()
 endif()
 
+set(CMAKE_C_FLAGS_DEBUG "-O0 ${DEBUG_FLAGS} ${STRICT_FLAGS}")
+set(CMAKE_C_FLAGS_RELEASE "-O2 ${RELEASE_FLAGS} ${STRICT_FLAGS}")
+set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 ${RELEASE_FLAGS} ${DEBUG_FLAGS} ${STRICT_FLAGS}")
+
 # Add library project
 add_subdirectory(src)
 add_subdirectory(examples)