Add disabling and reenabling header files.

The files check for compiler versions to avoid using incompatible
pragmas. Only enabled for gcc >= 4.6 and clang.

opm/core/utility/platform_dependent/disable_warnings.h

@@ -0,0 +1,65 @@
+/*
+  Copyright 2014 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  OPM is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef OPM_DISABLE_WARNINGS_HEADER_INCLUDED
+#define OPM_DISABLE_WARNINGS_HEADER_INCLUDED
+
+// To use this feature, we must have sufficiently new compiler.
+
+// Using gcc is ok if version 4.6 or newer.
+#if defined(__GNUC__)
+#  define __GNUC_VERSION__ (__GNUC__ * 100 \
+                            + __GNUC_MINOR__ * 1)
+#  if (__GNUC_VERSION__ >= 406)
+#    define GNU_COMPILER_OK 1
+#  else
+#    define GNU_COMPILER_OK 0
+#  endif
+#else
+#  define GNU_COMPILER_OK 0
+#endif
+
+// Uncertain what version of clang to require,
+// assume all versions are fine.
+#if defined(__clang__)
+#  define CLANG_COMPILER_OK 1
+#else
+#  define CLANG_COMPILER_OK 0
+#endif
+
+// More compilers can be added here if necessary.
+#define COMPATIBLE_COMPILER (GNU_COMPILER_OK || CLANG_COMPILER_OK)
+
+// If compiler is compatible, push current warning level
+// and ignore warnings that are usually generated from
+// third-party libraries that are not warning-clean.
+// Note that both clang and (newer) gcc accept the
+// "#pragma GCC diagnostic" syntax.
+#if COMPATIBLE_COMPILER
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#pragma GCC diagnostic ignored "-Wdeprecated-register"
+#pragma GCC diagnostic ignored "-Wignored-qualifiers"
+#pragma GCC diagnostic ignored "-Wmismatched-tags"
+#pragma GCC diagnostic ignored "-Wshadow"
+#pragma GCC diagnostic ignored "-Wsign-compare"
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif // COMPATIBLE_COMPILER
+
+#endif // OPM_DISABLE_WARNINGS_HEADER_INCLUDED

opm/core/utility/platform_dependent/reenable_warnings.h

@@ -0,0 +1,56 @@
+/*
+  Copyright 2014 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  OPM is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef OPM_REENABLE_WARNINGS_HEADER_INCLUDED
+#define OPM_REENABLE_WARNINGS_HEADER_INCLUDED
+
+// To use this feature, we must have sufficiently new compiler.
+
+// Using gcc is ok if version 4.6 or newer.
+#if defined(__GNUC__)
+#  define __GNUC_VERSION__ (__GNUC__ * 100 \
+                            + __GNUC_MINOR__ * 1)
+#  if (__GNUC_VERSION__ >= 406)
+#    define GNU_COMPILER_OK 1
+#  else
+#    define GNU_COMPILER_OK 0
+#  endif
+#else
+#  define GNU_COMPILER_OK 0
+#endif
+
+// Uncertain what version of clang to require,
+// assume all versions are fine.
+#if defined(__clang__)
+#  define CLANG_COMPILER_OK 1
+#else
+#  define CLANG_COMPILER_OK 0
+#endif
+
+// More compilers can be added here if necessary.
+#define COMPATIBLE_COMPILER (GNU_COMPILER_OK || CLANG_COMPILER_OK)
+
+// If compiler is compatible, pop current warning level.
+// Note that both clang and (newer) gcc accept the
+// "#pragma GCC diagnostic" syntax.
+#if COMPATIBLE_COMPILER
+#pragma GCC diagnostic pop
+#endif // COMPATIBLE_COMPILER
+
+#endif // OPM_REENABLE_WARNINGS_HEADER_INCLUDED