gcc: suppress gcc warnings in smesh code

src/3rdParty/salomesmesh/CMakeLists.txt

@@ -20,6 +20,24 @@ if(CMAKE_COMPILER_IS_CLANGXX)
         set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-deprecated-copy")
     endif ()
 
+    unset(_flag_found CACHE)
+    check_cxx_compiler_flag("-Wno-missing-field-initializers" _flag_found)
+    if (_flag_found)
+        set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-missing-field-initializers")
+    endif ()
+elseif(CMAKE_COMPILER_IS_GNUCXX)
+    unset(_flag_found CACHE)
+    check_cxx_compiler_flag("-Wno-unused-result" _flag_found)
+    if (_flag_found)
+        set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-unused-result")
+    endif ()
+
+    unset(_flag_found CACHE)
+    check_cxx_compiler_flag("-Wno-maybe-uninitialized" _flag_found)
+    if (_flag_found)
+        set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-maybe-uninitialized")
+    endif ()
+
     unset(_flag_found CACHE)
     check_cxx_compiler_flag("-Wno-missing-field-initializers" _flag_found)
     if (_flag_found)

src/3rdParty/salomesmesh/src/NETGENPlugin/NETGENPlugin_Mesher.cpp

@@ -87,6 +87,10 @@ namespace nglib {
 #undef NETGEN_PYTHON
 #endif
 
+#ifndef WIN32
+#undef DLL_HEADER
+#endif
+
 #include <occgeom.hpp>
 #include <meshing.hpp>
 //#include <ngexception.hpp>

src/3rdParty/salomesmesh/src/NETGENPlugin/NETGENPlugin_NETGEN_2D.cpp

@@ -55,6 +55,10 @@ namespace nglib {
 #undef NETGEN_PYTHON
 #endif
 
+#ifndef WIN32
+#undef DLL_HEADER
+#endif
+
 #include <meshing.hpp>
 
 #if defined(__clang__)

src/3rdParty/salomesmesh/src/NETGENPlugin/NETGENPlugin_NETGEN_2D3D.cpp

@@ -54,6 +54,10 @@ namespace nglib {
 #undef NETGEN_PYTHON
 #endif
 
+#ifndef WIN32
+#undef DLL_HEADER
+#endif
+
 #include <meshing.hpp>
 
 #if defined(__clang__)

src/3rdParty/salomesmesh/src/NETGENPlugin/NETGENPlugin_NETGEN_2D_ONLY.cpp

@@ -72,6 +72,10 @@ namespace nglib {
 #undef NETGEN_PYTHON
 #endif
 
+#ifndef WIN32
+#undef DLL_HEADER
+#endif
+
 #include <occgeom.hpp>
 #include <meshing.hpp>
 //#include <meshing/meshtype.hpp>

src/3rdParty/salomesmesh/src/NETGENPlugin/NETGENPlugin_NETGEN_3D.cpp

@@ -81,6 +81,10 @@
 #undef NETGEN_PYTHON
 #endif
 
+#ifndef WIN32
+#undef DLL_HEADER
+#endif
+
 #include <occgeom.hpp>
 
 #if defined(__clang__)