Fix warning when compiling with clang

The 'maybe-uninitialized' warning option is a GCC's only flag. The
equivalent one for Clang is 'possible-uninitialized'.
Added the right flag based on the compiler.

Bug-AGL: SPEC-2584

Change-Id: I09ce434dfda21996cefbf0b527b43d666a042e0e
Signed-off-by: Loïc Collignon <loic.collignon@iot.bzh>

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3962da2..54f03b3 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -61,7 +61,11 @@ link_libraries(-Wl,--as-needed -Wl,--gc-sections -Wl,--no-undefined)
 add_compile_options(-Wall -Wextra -Wconversion)
 add_compile_options(-Wno-unused-parameter) # frankly not using a parameter does it care?
 add_compile_options(-Wno-sign-compare -Wno-sign-conversion)
-add_compile_options(-Werror=maybe-uninitialized)
+if (${CMAKE_C_COMPILER_ID} STREQUAL "GNU" OR ${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
+       add_compile_options(-Werror=maybe-uninitialized)
+elseif(${CMAKE_C_COMPILER_ID} STREQUAL "Clang" OR ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+       add_compile_options(-Werror=sometimes-uninitialized)
+endif()
 add_compile_options(-Werror=implicit-function-declaration)
 add_compile_options(-ffunction-sections -fdata-sections)
 add_compile_options(-fPIC)