diff options
Diffstat (limited to 'manual')
| -rw-r--r-- | manual/creature.texi | 41 | ||||
| -rw-r--r-- | manual/job.texi | 35 |
2 files changed, 7 insertions, 69 deletions
diff --git a/manual/creature.texi b/manual/creature.texi index 1bf53147ee..3b7e77c78b 100644 --- a/manual/creature.texi +++ b/manual/creature.texi @@ -77,24 +77,6 @@ edition is made available. @defvr Macro _BSD_SOURCE If you define this macro, functionality derived from 4.3 BSD Unix is included as well as the @w{ISO C}, POSIX.1, and POSIX.2 material. - -Some of the features derived from 4.3 BSD Unix conflict with the -corresponding features specified by the POSIX.1 standard. If this -macro is defined, the 4.3 BSD definitions take precedence over the -POSIX definitions. - -Due to the nature of some of the conflicts between 4.3 BSD and POSIX.1, -you need to use a special @dfn{BSD compatibility library} when linking -programs compiled for BSD compatibility. This is because some functions -must be defined in two different ways, one of them in the normal C -library, and one of them in the compatibility library. If your program -defines @code{_BSD_SOURCE}, you must give the option @samp{-lbsd-compat} -to the compiler or linker when linking the program, to tell it to find -functions in this special compatibility library before looking for them in -the normal C library. -@pindex -lbsd-compat -@pindex bsd-compat -@cindex BSD compatibility library. @end defvr @comment (none) @@ -204,21 +186,6 @@ If you define this macro, everything is included: @w{ISO C89}, @w{ISO C99}, POSIX.1, POSIX.2, BSD, SVID, X/Open, LFS, and GNU extensions. In the cases where POSIX.1 conflicts with BSD, the POSIX definitions take precedence. - -If you want to get the full effect of @code{_GNU_SOURCE} but make the -BSD definitions take precedence over the POSIX definitions, use this -sequence of definitions: - -@smallexample -#define _GNU_SOURCE -#define _BSD_SOURCE -#define _SVID_SOURCE -@end smallexample - -Note that if you do this, you must link your program with the BSD -compatibility library by passing the @samp{-lbsd-compat} option to the -compiler or linker. @strong{NB:} If you forget to do this, you may -get very strange errors at run time. @end defvr @comment (none) @@ -248,11 +215,3 @@ those features. For example, if you define @code{_POSIX_C_SOURCE}, then defining @code{_POSIX_SOURCE} as well has no effect. Likewise, if you define @code{_GNU_SOURCE}, then defining either @code{_POSIX_SOURCE} or @code{_POSIX_C_SOURCE} or @code{_SVID_SOURCE} as well has no effect. - -Note, however, that the features of @code{_BSD_SOURCE} are not a subset of -any of the other feature test macros supported. This is because it defines -BSD features that take precedence over the POSIX features that are -requested by the other macros. For this reason, defining -@code{_BSD_SOURCE} in addition to the other feature test macros does have -an effect: it causes the BSD features to take priority over the conflicting -POSIX features. diff --git a/manual/job.texi b/manual/job.texi index 4efeed3451..d58dcd8c8f 100644 --- a/manual/job.texi +++ b/manual/job.texi @@ -1118,39 +1118,18 @@ from the calling process. @end table @end deftypefun -The @code{getpgrp} function has two definitions: one derived from BSD -Unix, and one from the POSIX.1 standard. The feature test macros you -have selected (@pxref{Feature Test Macros}) determine which definition -you get. Specifically, you get the BSD version if you define -@code{_BSD_SOURCE}; otherwise, you get the POSIX version if you define -@code{_POSIX_SOURCE} or @code{_GNU_SOURCE}. Programs written for old -BSD systems will not include @file{unistd.h}, which defines -@code{getpgrp} specially under @code{_BSD_SOURCE}. You must link such -programs with the @code{-lbsd-compat} option to get the BSD definition.@refill -@pindex -lbsd-compat -@pindex bsd-compat -@cindex BSD compatibility library - @comment unistd.h @comment POSIX.1 -@deftypefn {POSIX.1 Function} pid_t getpgrp (void) -The POSIX.1 definition of @code{getpgrp} returns the process group ID of +@deftypefun pid_t getpgrp (void) +The @code{getpgrp} function returns the process group ID of the calling process. -@end deftypefn - -@comment unistd.h -@comment BSD -@deftypefn {BSD Function} pid_t getpgrp (pid_t @var{pid}) -The BSD definition of @code{getpgrp} returns the process group ID of the -process @var{pid}. You can supply a value of @code{0} for the @var{pid} -argument to get information about the calling process. -@end deftypefn +@end deftypefun @comment unistd.h -@comment SVID -@deftypefn {System V Function} int getpgid (pid_t @var{pid}) +@comment POSIX.1 +@deftypefun int getpgid (pid_t @var{pid}) -@code{getpgid} is the same as the BSD function @code{getpgrp}. It +The @code{getpgid} function returns the process group ID of the process @var{pid}. You can supply a value of @code{0} for the @var{pid} argument to get information about the calling process. @@ -1166,7 +1145,7 @@ different sessions, and the implementation doesn't allow to access the process group ID of the process with ID @var{pid} from the calling process. @end table -@end deftypefn +@end deftypefun @comment unistd.h @comment POSIX.1 |