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default features: make musl usable without feature test macros

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the old behavior of exposing nothing except plain ISO C can be
obtained by defining __STRICT_ANSI__ or using a compiler option (such
as -std=c99) that predefines it. the new default featureset is POSIX
with XSI plus _BSD_SOURCE. any explicit feature test macros will
inhibit the default.

installation docs have also been updated to reflect this change.
This commit is contained in:
Rich Felker 2012-09-07 23:13:55 -04:00
commit c1a9658bd1
48 changed files with 102 additions and 129 deletions
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7
include/aio.h
View file

@ -5,12 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#include <signal.h>
#include <time.h>

9
include/assert.h
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@ -1,11 +1,6 @@
#undef assert
#include <features.h>
#if __STDC_VERSION__ >= 201112L
#elif defined(__GNUC__)
#define _Noreturn __attribute__((__noreturn__))
#else
#define _Noreturn
#endif
#undef assert
#ifdef NDEBUG
#define assert(x) (void)0

2
include/ctype.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
int isalnum(int);
int isalpha(int);
int isblank(int);

6
include/dirent.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#define __NEED_ino_t
#define __NEED_off_t

6
include/dlfcn.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#define RTLD_LAZY 1
#define RTLD_NOW 2

4
include/endian.h
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@ -1,9 +1,7 @@
#ifndef _ENDIAN_H
#define _ENDIAN_H
#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
#define __inline inline
#endif
#include <features.h>
#define __LITTLE_ENDIAN 1234
#define __BIG_ENDIAN 4321

2
include/fcntl.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_off_t
#define __NEED_pid_t
#define __NEED_mode_t

29
include/features.h
View file

@ -1 +1,28 @@
#warning "features.h is bogus"
#ifndef _FEATURES_H
#define _FEATURES_H
#if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) \
&& !defined(_XOPEN_SOURCE) && !defined(_GNU_SOURCE) \
&& !defined(_BSD_SOURCE) && !defined(__STRICT_ANSI__)
#define _BSD_SOURCE 1
#define _XOPEN_SOURCE 700
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
#define __inline inline
#endif
#if __STDC_VERSION__ >= 201112L
#elif defined(__GNUC__)
#define _Noreturn __attribute__((__noreturn__))
#else
#define _Noreturn
#endif
#endif

2
include/fnmatch.h
View file

@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define FNM_PATHNAME 0x1
#define FNM_NOESCAPE 0x2
#define FNM_PERIOD 0x4

2
include/ftw.h
View file

@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
/* Normally we do not nest header includes. However useless bloat
* like ftw may be treated as a special case. Otherwise we would
* have to deal with duplicating all the stat.h mess. */

6
include/glob.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#define __NEED_size_t

2
include/grp.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_size_t
#define __NEED_gid_t

2
include/limits.h
View file

@ -1,6 +1,8 @@
#ifndef _LIMITS_H
#define _LIMITS_H
#include <features.h>
/* Most limits are system-specific */
#include <bits/limits.h>

2
include/locale.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#undef NULL
#ifdef __cplusplus
#define NULL 0

4
include/math.h
View file

@ -5,9 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
#define __inline inline
#endif
#include <features.h>
#define __NEED_float_t
#define __NEED_double_t

2
include/net/if.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define IF_NAMESIZE 16
struct if_nameindex

6
include/netdb.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define __NEED_size_t

2
include/netinet/tcp.h
View file

@ -1,6 +1,8 @@
#ifndef _NETINET_TCP_H
#define _NETINET_TCP_H
#include <features.h>
#define TCP_NODELAY 1
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#include <sys/types.h>

2
include/pwd.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_size_t
#define __NEED_uid_t
#define __NEED_gid_t

2
include/sched.h
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@ -4,6 +4,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_struct_timespec
#define __NEED_pid_t
#define __NEED_time_t

7
include/search.h
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@ -5,12 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#define __NEED_size_t
#include <bits/alltypes.h>

7
include/setjmp.h
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@ -5,12 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 201112L
#elif defined(__GNUC__)
#define _Noreturn __attribute__((__noreturn__))
#else
#define _Noreturn
#endif
#include <features.h>
#include <bits/setjmp.h>

6
include/signal.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \

6
include/stdio.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#define __NEED_FILE
#define __NEED_va_list

13
include/stdlib.h
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@ -5,18 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#if __STDC_VERSION__ >= 201112L
#elif defined(__GNUC__)
#define _Noreturn __attribute__((__noreturn__))
#else
#define _Noreturn
#endif
#include <features.h>
#undef NULL
#ifdef __cplusplus

6
include/string.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#undef NULL
#ifdef __cplusplus

2
include/sys/ipc.h
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@ -4,6 +4,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_uid_t
#define __NEED_gid_t
#define __NEED_mode_t

2
include/sys/mman.h
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@ -4,6 +4,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_mode_t
#define __NEED_size_t
#define __NEED_off_t

2
include/sys/resource.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_id_t
#define __NEED_time_t
#define __NEED_struct_timeval

2
include/sys/sem.h
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@ -4,6 +4,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_size_t
#define __NEED_pid_t
#define __NEED_time_t

1
include/sys/sendfile.h
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@ -5,6 +5,7 @@
extern "C" {
#endif
#include <features.h>
#include <unistd.h>
ssize_t sendfile(int, int, off_t *, size_t);

2
include/sys/shm.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_time_t
#define __NEED_size_t
#define __NEED_pid_t

6
include/sys/stat.h
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@ -4,11 +4,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#define __NEED_dev_t
#define __NEED_ino_t

2
include/sys/statfs.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#include <sys/statvfs.h>
typedef struct {

6
include/sys/statvfs.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#define __NEED_fsblkcnt_t
#define __NEED_fsfilcnt_t

6
include/sys/time.h
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@ -4,11 +4,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#include <sys/select.h>

2
include/sys/types.h
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@ -4,6 +4,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_ino_t
#define __NEED_dev_t
#define __NEED_uid_t

2
include/sys/uio.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_size_t
#define __NEED_ssize_t
#define __NEED_struct_iovec

2
include/sys/utsname.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
struct utsname
{
char sysname[65];

2
include/sys/wait.h
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@ -4,6 +4,8 @@
extern "C" {
#endif
#include <features.h>
#include <signal.h>
#define __NEED_pid_t

2
include/syslog.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define LOG_EMERG 0
#define LOG_ALERT 1
#define LOG_CRIT 2

2
include/termios.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_pid_t
#include <bits/alltypes.h>

6
include/time.h
View file

@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#undef NULL
#ifdef __cplusplus

2
include/ucontext.h
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@ -4,6 +4,8 @@
extern "C" {
#endif
#include <features.h>
#include <signal.h>
#ifdef _GNU_SOURCE

13
include/unistd.h
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@ -5,18 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#if __STDC_VERSION__ >= 201112L
#elif defined(__GNUC__)
#define _Noreturn __attribute__((__noreturn__))
#else
#define _Noreturn
#endif
#include <features.h>
#define STDIN_FILENO 0
#define STDOUT_FILENO 1

6
include/wchar.h
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@ -5,11 +5,7 @@
extern "C" {
#endif
#if __STDC_VERSION__ >= 199901L
#define __restrict restrict
#elif !defined(__GNUC__)
#define __restrict
#endif
#include <features.h>
#define __NEED_FILE
#define __NEED_va_list

2
include/wctype.h
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@ -5,6 +5,8 @@
extern "C" {
#endif
#include <features.h>
#define __NEED_wint_t
#define __NEED_wctrans_t
#define __NEED_wctype_t