1 /* vi: set sw=4 ts=4: */
3 Copyright 2006, Bernhard Fischer
5 Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
10 /* Convenience macros to test the version of gcc. */
12 #if defined __GNUC__ && defined __GNUC_MINOR__
13 # define __GNUC_PREREQ(maj, min) \
14 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
16 # define __GNUC_PREREQ(maj, min) 0
19 /* __restrict is known in EGCS 1.2 and above. */
20 #if !__GNUC_PREREQ (2,92)
22 # define __restrict /* Ignore */
26 /* Define macros for some gcc attributes. This permits us to use the
27 macros freely, and know that they will come into play for the
28 version of gcc in which they are supported. */
30 #if !__GNUC_PREREQ (2,7)
31 # ifndef __attribute__
32 # define __attribute__(x)
37 #if __STDC_VERSION__ > 199901L
40 # if __GNUC_PREREQ (2,7)
41 # define inline __inline__
48 # define __const const
56 #ifndef ATTRIBUTE_UNUSED
57 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
58 #endif /* ATTRIBUTE_UNUSED */
60 #ifndef ATTRIBUTE_NORETURN
61 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
62 #endif /* ATTRIBUTE_NORETURN */
64 #ifndef ATTRIBUTE_PACKED
65 # define ATTRIBUTE_PACKED __attribute__ ((__packed__))
66 #endif /* ATTRIBUTE_PACKED */
68 #ifndef ATTRIBUTE_ALIGNED
69 # define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m)))
70 #endif /* ATTRIBUTE_ALIGNED */
72 #ifndef ATTRIBUTE_ALWAYS_INLINE
73 # if __GNUC_PREREQ (3,0)
74 # define ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline)) inline
76 # define ATTRIBUTE_ALWAYS_INLINE inline
80 /* -fwhole-program makes all symbols local. The attribute externally_visible
81 forces a symbol global. */
82 #ifndef ATTRIBUTE_EXTERNALLY_VISIBLE
83 # if __GNUC_PREREQ (4,1)
84 # define ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((__externally_visible__))
86 # define ATTRIBUTE_EXTERNALLY_VISIBLE
87 # endif /* GNUC >= 4.1 */
88 #endif /* ATTRIBUTE_EXTERNALLY_VISIBLE */
90 /* We use __extension__ in some places to suppress -pedantic warnings
91 about GCC extensions. This feature didn't work properly before
93 #if !__GNUC_PREREQ (2,8)
94 # ifndef __extension__
95 # define __extension__
99 /* ---- Endian Detection ------------------------------------ */
100 #if !defined __APPLE__ && !(defined __digital__ && defined __unix__)
101 # include <byteswap.h>
105 #if (defined __digital__ && defined __unix__)
107 # define __BIG_ENDIAN__ (BYTE_ORDER == BIG_ENDIAN)
108 # define __BYTE_ORDER BYTE_ORDER
112 #ifdef __BIG_ENDIAN__
113 # define BB_BIG_ENDIAN 1
114 # define BB_LITTLE_ENDIAN 0
115 #elif __BYTE_ORDER == __BIG_ENDIAN
116 # define BB_BIG_ENDIAN 1
117 # define BB_LITTLE_ENDIAN 0
119 # define BB_BIG_ENDIAN 0
120 # define BB_LITTLE_ENDIAN 1
123 /* ---- Networking ------------------------------------------ */
125 # include <arpa/inet.h>
127 # include <netinet/in.h>
130 #ifndef __socklen_t_defined
131 typedef int socklen_t;
134 /* ---- Compiler dependent settings ------------------------- */
136 #if defined __INTEL_COMPILER
137 __extension__ typedef __signed__ long long __s64;
138 __extension__ typedef unsigned long long __u64;
139 #endif /* __INTEL_COMPILER */
140 #endif /* ifndef __GNUC__ */
142 #if (defined __digital__ && defined __unix__)
143 # undef HAVE_STDBOOL_H
144 # undef HAVE_MNTENT_H
146 # define HAVE_STDBOOL_H 1
147 # define HAVE_MNTENT_H 1
148 #endif /* ___digital__ && __unix__ */
150 /*----- Kernel versioning ------------------------------------*/
152 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
155 /* ---- miscellaneous --------------------------------------- */
157 #if __GNU_LIBRARY__ < 5 && \
158 !defined(__dietlibc__) && \
159 !defined(_NEWLIB_VERSION) && \
160 !(defined __digital__ && defined __unix__)
161 #error "Sorry, this libc version is not supported :("
164 #if defined __GLIBC__ || defined __UCLIBC__ \
165 || defined __dietlibc__ || defined _NEWLIB_VERSION
166 #include <features.h>
167 #define HAVE_FEATURES_H
169 #define HAVE_STDINT_H
171 /* Largest integral types. */
173 typedef long int intmax_t;
174 typedef unsigned long int uintmax_t;
177 typedef long long int intmax_t;
179 typedef unsigned long long int uintmax_t;
183 #if (defined __digital__ && defined __unix__)
184 #include <standards.h>
185 #define HAVE_STANDARDS_H
186 #include <inttypes.h>
187 #define HAVE_INTTYPES_H
193 /* THIS SHOULD BE CLEANED OUT OF THE TREE ENTIRELY */
195 #define N_(Text) (Text)
197 /* THIS SHOULD BE CLEANED OUT OF THE TREE ENTIRELY */
198 #define fdprintf dprintf
200 /* move to platform.c */
201 #if (defined __digital__ && defined __unix__)
202 /* use legacy setpgrp(pidt_,pid_t) for now.. */
203 #define bb_setpgrp do{pid_t __me = getpid();setpgrp(__me,__me);}while(0)
205 #define bb_setpgrp setpgrp()
207 #endif /* platform.h */