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
51 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
52 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
53 # define ATTRIBUTE_PACKED __attribute__ ((__packed__))
54 # define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m)))
55 # if __GNUC_PREREQ (3,0)
56 # define ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline)) inline
58 # define ATTRIBUTE_ALWAYS_INLINE inline
61 /* -fwhole-program makes all symbols local. The attribute externally_visible
62 forces a symbol global. */
63 # if __GNUC_PREREQ (4,1)
64 # define ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((__externally_visible__))
66 # define ATTRIBUTE_EXTERNALLY_VISIBLE
67 # endif /* GNUC >= 4.1 */
69 /* We use __extension__ in some places to suppress -pedantic warnings
70 about GCC extensions. This feature didn't work properly before
72 #if !__GNUC_PREREQ (2,8)
73 # ifndef __extension__
74 # define __extension__
78 /* ---- Endian Detection ------------------------------------ */
80 #if (defined __digital__ && defined __unix__)
82 # define __BIG_ENDIAN__ (BYTE_ORDER == BIG_ENDIAN)
83 # define __BYTE_ORDER BYTE_ORDER
84 #elif !defined __APPLE__
85 # include <byteswap.h>
90 # define BB_BIG_ENDIAN 1
91 # define BB_LITTLE_ENDIAN 0
92 #elif __BYTE_ORDER == __BIG_ENDIAN
93 # define BB_BIG_ENDIAN 1
94 # define BB_LITTLE_ENDIAN 0
96 # define BB_BIG_ENDIAN 0
97 # define BB_LITTLE_ENDIAN 1
101 #define SWAP_BE16(x) (x)
102 #define SWAP_BE32(x) (x)
103 #define SWAP_BE64(x) (x)
104 #define SWAP_LE16(x) bswap_16(x)
105 #define SWAP_LE32(x) bswap_32(x)
106 #define SWAP_LE64(x) bswap_64(x)
108 #define SWAP_BE16(x) bswap_16(x)
109 #define SWAP_BE32(x) bswap_32(x)
110 #define SWAP_BE64(x) bswap_64(x)
111 #define SWAP_LE16(x) (x)
112 #define SWAP_LE32(x) (x)
113 #define SWAP_LE64(x) (x)
116 /* ---- Networking ------------------------------------------ */
118 # include <arpa/inet.h>
120 # include <netinet/in.h>
123 #ifndef __socklen_t_defined
124 typedef int socklen_t;
127 /* ---- Compiler dependent settings ------------------------- */
129 #if defined __INTEL_COMPILER
130 __extension__ typedef __signed__ long long __s64;
131 __extension__ typedef unsigned long long __u64;
132 #endif /* __INTEL_COMPILER */
133 #endif /* ifndef __GNUC__ */
135 #if (defined __digital__ && defined __unix__)
136 # undef HAVE_MNTENT_H
138 # define HAVE_MNTENT_H 1
139 #endif /* ___digital__ && __unix__ */
141 /*----- Kernel versioning ------------------------------------*/
142 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
144 /* ---- miscellaneous --------------------------------------- */
146 #if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \
147 !defined(__dietlibc__) && \
148 !defined(_NEWLIB_VERSION) && \
149 !(defined __digital__ && defined __unix__)
150 # error "Sorry, this libc version is not supported :("
153 // Don't perpetuate e2fsck crap into the headers. Clean up e2fsck instead.
155 #if defined __GLIBC__ || defined __UCLIBC__ \
156 || defined __dietlibc__ || defined _NEWLIB_VERSION
157 #include <features.h>
158 #define HAVE_FEATURES_H
160 #define HAVE_STDINT_H
162 /* Largest integral types. */
164 typedef long int intmax_t;
165 typedef unsigned long int uintmax_t;
168 typedef long long int intmax_t;
170 typedef unsigned long long int uintmax_t;
174 /* uclibc does not implement daemon for no-mmu systems.
175 * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
176 * For earlier versions there is no reliable way to check if we are building
177 * for a mmu-less system; the user should pass EXTRA_CFLAGS="-DBB_NOMMU"
180 #if defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
181 __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__
185 /* Platforms that haven't got dprintf need to implement fdprintf() in
186 * libbb. This would require a platform.c. It's not going to be cleaned
187 * out of the tree, so stop saying it should be. */
188 #define fdprintf dprintf
190 /* THIS SHOULD BE CLEANED OUT OF THE TREE ENTIRELY */
191 /* FIXME: fix tar.c! */
192 #ifndef FNM_LEADING_DIR
193 #define FNM_LEADING_DIR 0
196 #if (defined __digital__ && defined __unix__)
197 #include <standards.h>
198 #define HAVE_STANDARDS_H
199 #include <inttypes.h>
200 #define HAVE_INTTYPES_H
203 /* use legacy setpgrp(pidt_,pid_t) for now. move to platform.c */
204 #define bb_setpgrp do{pid_t __me = getpid();setpgrp(__me,__me);}while(0)
206 #if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
207 #define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
209 #if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
210 #define ADJ_FREQUENCY MOD_FREQUENCY
212 #if !defined ADJ_TIMECONST && defined MOD_TIMECONST
213 #define ADJ_TIMECONST MOD_TIMECONST
215 #if !defined ADJ_TICK && defined MOD_CLKB
216 #define ADJ_TICK MOD_CLKB
220 #define bb_setpgrp setpgrp()
223 #if defined(__linux__)
224 #include <sys/mount.h>
225 #if !defined(BLKSSZGET)
226 #define BLKSSZGET _IO(0x12, 104)
228 #if !defined(BLKGETSIZE64)
229 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
233 #endif /* platform.h */