diff options
Diffstat (limited to 'include/features.h')
| -rw-r--r-- | include/features.h | 148 |
1 files changed, 67 insertions, 81 deletions
diff --git a/include/features.h b/include/features.h index 66447e2ed..1d47b5660 100644 --- a/include/features.h +++ b/include/features.h @@ -19,35 +19,6 @@ #ifndef _FEATURES_H #define _FEATURES_H 1 -/* This macro indicates that the installed library is uClibc. Use - * __UCLIBC_MAJOR__ and __UCLIBC_MINOR__ to test for the features in - * specific releases. */ -#define __UCLIBC__ 1 - -/* Load up the current set of uClibc supported features along - * with the current uClibc major and minor version numbers. - * For uClibc release 0.9.26, these numbers would be: - * #define __UCLIBC_MAJOR__ 0 - * #define __UCLIBC_MINOR__ 9 - * #define __UCLIBC_SUBLEVEL__ 26 - */ -#define __need_uClibc_config_h -#include <bits/uClibc_config.h> -#undef __need_uClibc_config_h -#ifdef _LIBC -#include <bits/uClibc_arch_features.h> -#endif - -/* For uClibc, always optimize for size -- this should disable - * a lot of expensive inlining... - * TODO: this is wrong! __OPTIMIZE_SIZE__ is an indicator of - * gcc -Os compile. We should not mess with compiler inlines. - * We should instead disable __USE_EXTERN_INLINES unconditionally, - * or maybe actually audit and test uclibc to work correctly - * with __USE_EXTERN_INLINES on. - */ -#define __OPTIMIZE_SIZE__ 1 - /* These are defined by the user (or the compiler) to specify the desired environment: @@ -189,10 +160,8 @@ # define _XOPEN_SOURCE 700 # undef _XOPEN_SOURCE_EXTENDED # define _XOPEN_SOURCE_EXTENDED 1 -# ifdef __UCLIBC_HAS_LFS__ -# undef _LARGEFILE64_SOURCE -# define _LARGEFILE64_SOURCE 1 -# endif /* __UCLIBC_HAS_LFS__ */ +# undef _LARGEFILE64_SOURCE +# define _LARGEFILE64_SOURCE 1 # undef _BSD_SOURCE # define _BSD_SOURCE 1 # undef _SVID_SOURCE @@ -201,6 +170,57 @@ # define _ATFILE_SOURCE 1 #endif +/* This macro indicates that the installed library is uClibc. Use + * __UCLIBC_MAJOR__ and __UCLIBC_MINOR__ to test for the features in + * specific releases. */ +#define __UCLIBC__ 1 + +#ifdef __UCLIBC__ +/* Load up the current set of uClibc supported features along + * with the current uClibc major and minor version numbers. + * For uClibc release 0.9.26, these numbers would be: + * #define __UCLIBC_MAJOR__ 0 + * #define __UCLIBC_MINOR__ 9 + * #define __UCLIBC_SUBLEVEL__ 26 + */ +# define __need_uClibc_config_h +# include <bits/uClibc_config.h> +# undef __need_uClibc_config_h + +/* For uClibc, always optimize for size -- this should disable + * a lot of expensive inlining... + * TODO: this is wrong! __OPTIMIZE_SIZE__ is an indicator of + * gcc -Os compile. We should not mess with compiler inlines. + * We should instead disable __USE_EXTERN_INLINES unconditionally, + * or maybe actually audit and test uclibc to work correctly + * with __USE_EXTERN_INLINES on. + */ +# define __OPTIMIZE_SIZE__ 1 + +/* disable unsupported features */ +# undef _FORTIFY_SOURCE +# undef __LDBL_COMPAT + +# ifndef __UCLIBC_HAS_THREADS__ +# if defined _REENTRANT || defined _THREAD_SAFE +# warning requested reentrant code, but thread support was disabled +# undef _REENTRANT +# undef _THREAD_SAFE +# endif +# endif + +# ifndef __UCLIBC_HAS_LFS__ +# undef _LARGEFILE64_SOURCE +/* NOTE: This is probably incorrect on a 64-bit arch... */ +# if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS == 64 +# error It appears you have defined _FILE_OFFSET_BITS=64. Unfortunately, \ +uClibc was built without large file support enabled. +# endif +# elif defined __BCC__ +# error BCC does not support LFS, please disable it +# endif +#endif /* __UCLIBC__ */ + /* If nothing (other than _GNU_SOURCE) is defined, define _BSD_SOURCE and _SVID_SOURCE. */ #if (!defined __STRICT_ANSI__ && !defined _ISOC99_SOURCE && \ @@ -329,8 +349,6 @@ # define __USE_REENTRANT 1 #endif -/* uClibc does not support _FORTIFY_SOURCE */ -#undef _FORTIFY_SOURCE #if defined _FORTIFY_SOURCE && _FORTIFY_SOURCE > 0 \ && __GNUC_PREREQ (4, 1) && defined __OPTIMIZE__ && __OPTIMIZE__ > 0 # if _FORTIFY_SOURCE > 1 @@ -343,8 +361,10 @@ #endif /* We do support the IEC 559 math functionality, real and complex. */ +#ifdef __UCLIBC_HAS_FLOATS__ #define __STDC_IEC_559__ 1 #define __STDC_IEC_559_COMPLEX__ 1 +#endif #ifdef __UCLIBC_HAS_WCHAR__ /* wchar_t uses ISO 10646-1 (2nd ed., published 2000-09-15) / Unicode 3.1. */ @@ -362,14 +382,16 @@ /* This macro indicates that the installed library is the GNU C Library. For historic reasons the value now is 6 and this will stay from now on. The use of this variable is deprecated. */ -# undef __GNU_LIBRARY__ -# define __GNU_LIBRARY__ 6 +/* uClibc WARNING: leave these aligned to the left, don't put a space after '#', else + * broken apps could fail the check. */ +#undef __GNU_LIBRARY__ +#define __GNU_LIBRARY__ 6 /* Major and minor version number of the GNU C library package. Use these macros to test for features in specific releases. */ /* Don't do it, if you want to keep uClibc happy. */ -# define __GLIBC__ 2 -# define __GLIBC_MINOR__ 2 +#define __GLIBC__ 2 +#define __GLIBC_MINOR__ 2 #endif #define __GLIBC_PREREQ(maj, min) \ @@ -395,7 +417,9 @@ __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64]. */ # if defined __USE_FILE_OFFSET64 && !defined __REDIRECT # define __USE_LARGEFILE 1 +# ifdef __UCLIBC_HAS_LFS__ # define __USE_LARGEFILE64 1 +# endif # endif #endif /* !ASSEMBLER */ @@ -413,50 +437,12 @@ # define __USE_EXTERN_INLINES 1 #endif - -/* Make sure users large file options agree with uClibc's configuration. */ -#ifndef __UCLIBC_HAS_LFS__ - -/* If uClibc was built without large file support, output an error if - * 64-bit file offsets were requested. - * NOTE: This is probably incorrect on a 64-bit arch... */ -# ifdef __USE_FILE_OFFSET64 -# error It appears you have defined _FILE_OFFSET_BITS=64. Unfortunately, \ -uClibc was built without large file support enabled. -# endif - -/* If uClibc was built without large file support and _LARGEFILE64_SOURCE - * is defined, undefine it. */ -# ifdef _LARGEFILE64_SOURCE -# undef _LARGEFILE64_SOURCE -# undef __USE_LARGEFILE64 -# endif - -/* If we're actually building uClibc with large file support, - * define __USE_LARGEFILE64 and __USE_LARGEFILE. */ -#elif defined _LIBC -# undef _LARGEFILE_SOURCE -# undef _LARGEFILE64_SOURCE -# undef _FILE_OFFSET_BITS -# undef __USE_LARGEFILE -# undef __USE_LARGEFILE64 -# undef __USE_FILE_OFFSET64 -# define _LARGEFILE_SOURCE 1 -# define _LARGEFILE64_SOURCE 1 -# define __USE_LARGEFILE 1 -# define __USE_LARGEFILE64 1 -#endif - #ifdef _LIBC +# ifdef __UCLIBC_HAS_LFS__ +# undef _FILE_OFFSET_BITS +# undef __USE_FILE_OFFSET64 +# endif # include <libc-internal.h> #endif -/* Some people like to build up uClibc with *-elf toolchains, so - * a little grease here until we drop '#ifdef __linux__' checks - * from our source code. - */ -#ifndef __linux__ -# define __linux__ 1 -#endif - #endif /* features.h */ |