Move compiler-specific code into a separate header.

[android-x86/external-exfat.git] / libexfat / compiler.h

diff --git a/libexfat/compiler.h b/libexfat/compiler.h
new file mode 100644 (file)
index 0000000..4a5ca80
--- /dev/null
+++ b/libexfat/compiler.h
@@ -0,0 +1,49 @@
+/*
+       compiler.h (09.06.13)
+       Compiler-specific definitions. Note that unknown compiler is not a
+       showstopper.
+
+       Copyright (C) 2010-2013  Andrew Nayenko
+
+       This program 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.
+
+       This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef COMPILER_H_INCLUDED
+#define COMPILER_H_INCLUDED
+
+#if __STDC_VERSION__ < 199901L
+#error C99-compliant compiler is required
+#endif
+
+#if defined(__GNUC__) /* this includes Clang */
+
+#define PRINTF __attribute__((format(printf, 1, 2)))
+#define NORETURN __attribute((noreturn))
+#define PACKED __attribute__((packed))
+
+#else
+
+#define PRINTF
+#define NORETURN
+#define PACKED
+
+#endif
+
+#define CONCAT2(a, b) a ## b
+#define CONCAT1(a, b) CONCAT2(a, b)
+#define STATIC_ASSERT(cond) \
+       static inline void CONCAT1(static_assert, __LINE__)(void) \
+               {switch (0) {case 0: case cond:;}}
+
+#endif /* ifndef COMPILER_H_INCLUDED */