Use -Werror=xxx instead of -Werror

List all warnings explicitly that should be treated as errors
instead of covering all warnings with the `-Werror` flag. But do
keep in mind to add `-Werror=xxx` whenever we use `-Wxxx` (if xxx
stands for a type of warning).

This way we can avoid build failures caused by warning attributes
that would be turned into errors by `-Werror` (which cannot be
suppressed by any `-Wno-error=xxx` flag, unfortunately).

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

Author: akosthekiss

CMakeLists.txt

@@ -230,7 +230,7 @@ project (Jerry CXX C ASM)
    if(NOT ("${PLATFORM}" STREQUAL "DARWIN"))
     set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -fno-fat-lto-objects")
    endif()
-   set(LINKER_FLAGS_COMMON "${LINKER_FLAGS_COMMON} -flto -Wno-error")
+   set(LINKER_FLAGS_COMMON "${LINKER_FLAGS_COMMON} -flto")
   endif()
 
  # Turn off stack protector
@@ -246,7 +246,12 @@ project (Jerry CXX C ASM)
   set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Wmissing-declarations -Wno-attributes")
   set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Wfatal-errors")
   if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
-    set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Werror -Wlogical-op")
+    set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Wlogical-op")
+    set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Werror=logical-op")
+    set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Werror=all -Werror=extra")
+    set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Werror=format-nonliteral -Werror=init-self")
+    set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Werror=conversion -Werror=sign-conversion -Werror=format-security")
+    set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Werror=missing-declarations")
   else()
     set(COMPILE_FLAGS_JERRY "${COMPILE_FLAGS_JERRY} -Wno-nested-anon-types")
   endif()