Move gcc compat macros to gcc_compat.h

* defs.h: Include "gcc_compat.h".
(GNUC_PREREQ, ATTRIBUTE_NORETURN, ATTRIBUTE_FORMAT,
ATTRIBUTE_ALIGNED, ATTRIBUTE_PACKED, ATTRIBUTE_MALLOC,
ATTRIBUTE_NOINLINE, ATTRIBUTE_ALLOC_SIZE): Move ...
* gcc_compat.h: ... here.
* Makefile.am (strace_SOURCES): Add gcc_compat.h.

Author: ldv-alt

Makefile.am

@@ -97,6 +97,7 @@ strace_SOURCES =	\
 	flock.c		\
 	flock.h		\
 	futex.c		\
+	gcc_compat.h	\
 	get_robust_list.c \
 	getcpu.c	\
 	getcwd.c	\

defs.h

@@ -55,6 +55,7 @@
 #include <sys/syscall.h>
 
 #include "mpers_type.h"
+#include "gcc_compat.h"
 
 #ifndef HAVE_STRERROR
 const char *strerror(int);
@@ -68,48 +69,6 @@ const char *strerror(int);
 extern char *stpcpy(char *dst, const char *src);
 #endif
 
-#if defined __GNUC__ && defined __GNUC_MINOR__
-# define GNUC_PREREQ(maj, min)	\
-	((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
-#else
-# define __attribute__(x)	/* empty */
-# define GNUC_PREREQ(maj, min)	0
-#endif
-
-#if GNUC_PREREQ(2, 5)
-# define ATTRIBUTE_NORETURN	__attribute__((__noreturn__))
-#else
-# define ATTRIBUTE_NORETURN	/* empty */
-#endif
-
-#if GNUC_PREREQ(2, 7)
-# define ATTRIBUTE_FORMAT(args)	__attribute__((__format__ args))
-# define ATTRIBUTE_ALIGNED(arg)	__attribute__((__aligned__(arg)))
-# define ATTRIBUTE_PACKED	__attribute__((__packed__))
-#else
-# define ATTRIBUTE_FORMAT(args)	/* empty */
-# define ATTRIBUTE_ALIGNED(arg)	/* empty */
-# define ATTRIBUTE_PACKED	/* empty */
-#endif
-
-#if GNUC_PREREQ(3, 0)
-# define ATTRIBUTE_MALLOC	__attribute__((__malloc__))
-#else
-# define ATTRIBUTE_MALLOC	/* empty */
-#endif
-
-#if GNUC_PREREQ(3, 1)
-# define ATTRIBUTE_NOINLINE	__attribute__((__noinline__))
-#else
-# define ATTRIBUTE_NOINLINE	/* empty */
-#endif
-
-#if GNUC_PREREQ(4, 3)
-# define ATTRIBUTE_ALLOC_SIZE(args)	__attribute__((__alloc_size__ args))
-#else
-# define ATTRIBUTE_ALLOC_SIZE(args)	/* empty */
-#endif
-
 #ifndef offsetof
 # define offsetof(type, member)	\
 	(((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))

gcc_compat.h

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2015 Dmitry V. Levin <[email protected]>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef GCC_COMPAT_H_
+#define GCC_COMPAT_H_
+
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define GNUC_PREREQ(maj, min)	\
+	((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+# define __attribute__(x)	/* empty */
+# define GNUC_PREREQ(maj, min)	0
+#endif
+
+#if GNUC_PREREQ(2, 5)
+# define ATTRIBUTE_NORETURN	__attribute__((__noreturn__))
+#else
+# define ATTRIBUTE_NORETURN	/* empty */
+#endif
+
+#if GNUC_PREREQ(2, 7)
+# define ATTRIBUTE_FORMAT(args)	__attribute__((__format__ args))
+# define ATTRIBUTE_ALIGNED(arg)	__attribute__((__aligned__(arg)))
+# define ATTRIBUTE_PACKED	__attribute__((__packed__))
+#else
+# define ATTRIBUTE_FORMAT(args)	/* empty */
+# define ATTRIBUTE_ALIGNED(arg)	/* empty */
+# define ATTRIBUTE_PACKED	/* empty */
+#endif
+
+#if GNUC_PREREQ(3, 0)
+# define ATTRIBUTE_MALLOC	__attribute__((__malloc__))
+#else
+# define ATTRIBUTE_MALLOC	/* empty */
+#endif
+
+#if GNUC_PREREQ(3, 1)
+# define ATTRIBUTE_NOINLINE	__attribute__((__noinline__))
+#else
+# define ATTRIBUTE_NOINLINE	/* empty */
+#endif
+
+#if GNUC_PREREQ(4, 3)
+# define ATTRIBUTE_ALLOC_SIZE(args)	__attribute__((__alloc_size__ args))
+#else
+# define ATTRIBUTE_ALLOC_SIZE(args)	/* empty */
+#endif
+
+#endif