mirror/autoconf
2
0
Fork 0
mirror of git://git.sv.gnu.org/autoconf synced 2025-01-18 10:45:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

Formerly autoconf.texi.~133~

Browse Source
This commit is contained in:
Jim Meyering 1993-09-09 14:27:20 +00:00
parent 9dbde95d75
commit 87b1dea16e
2 changed files with 42 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
autoconf.texi
View File

@ -802,14 +802,17 @@ The following macros check for particular C library functions:
@defmac AC_ALLOCA
@maindex ALLOCA
@vindex C_ALLOCA
@vindex HAVE_ALLOCA_H
Check how to get @code{alloca}. Tries to get a builtin version by
checking for @file{alloca.h} or the predefined C preprocessor macros
@code{__GNUC__} and @code{_AIX}. If that fails, it looks for a function
in the standard C library. If that fails, it sets the @code{make}
variable @code{ALLOCA} to @samp{alloca.o}. This variable is separate
from @code{LIBOBJS} so multiple programs can share the value of
@code{ALLOCA} without needing to create an actual library.
variable @code{ALLOCA} to @samp{alloca.o} and defines @code{C_ALLOCA}
(so programs can periodically call @samp{alloca(0)} to garbage collect).
This variable is separate from @code{LIBOBJS} so multiple programs can
share the value of @code{ALLOCA} without needing to create an actual
library.
If this macro finds @file{alloca.h}, it defines @code{HAVE_ALLOCA_H}.
@ -949,7 +952,7 @@ The following macros check for certain structures or structure members:
@defmac AC_STAT_MACROS_BROKEN
@maindex STAT_MACROS_BROKEN
@maindex STAT_MACROS_BROKEN
If the macros @code{S_ISDIR}, @code{S_ISREG} et al. defined
If the macros @code{S_ISDIR}, @code{S_ISREG} et al. defined in
@file{sys/stat.h} do not work properly (returning false positives),
define @code{STAT_MACROS_BROKEN}. This is the case on Tektronix UTekV,
Amdahl UTS and Motorola System V/88.
@ -1081,6 +1084,12 @@ define @code{inline} to be @code{__inline}. This macro calls
If the C type @code{int} is 16 bits wide, define @code{INT_16_BITS}.
@end defmac
@defmac AC_LONG_64_BITS
@maindex LONG_64_BITS
@vindex LONG_64_BITS
If the C type @code{long int} is 64 bits wide, define @code{LONG_64_BITS}.
@end defmac
@defmac AC_LONG_DOUBLE
@maindex HAVE_LONG_DOUBLE
@vindex HAVE_LONG_DOUBLE
@ -1238,15 +1247,16 @@ These macros are defined in the file @file{acgeneral.m4}.
The following macros control the kind of output that Autoconf produces.
@defmac AC_CONFIG_HEADER (@var{header-to-create})
@defmac AC_CONFIG_HEADER (@var{header-to-create} @dots{})
@maindex CONFIG_HEADER
@vindex HAVE_CONFIG_H
Make @code{AC_OUTPUT} create a file @var{header-to-create} containing C
preprocessor @code{#define} statements and replace @samp{@@DEFS@@} in
generated files with @samp{-DHAVE_CONFIG_H} instead of the value of
@code{DEFS}. @xref{Setup}, for more information on @code{AC_OUTPUT}.
This macro should be called right after @code{AC_INIT}. The usual name
for @var{header-to-create} is @file{config.h}.
Make @code{AC_OUTPUT} create one or more files @var{header-to-create}
containing C preprocessor @code{#define} statements and replace
@samp{@@DEFS@@} in generated files with @samp{-DHAVE_CONFIG_H} instead
of the value of @code{DEFS}. @xref{Setup}, for more information on
@code{AC_OUTPUT}. This macro should be called right after
@code{AC_INIT}. The usual name for @var{header-to-create} is
@file{config.h}.
If @var{header-to-create} already exists and its contents are identical
to what @code{AC_OUTPUT} would put in it, it is left alone. Doing this

32
doc/autoconf.texi
View File

@ -802,14 +802,17 @@ The following macros check for particular C library functions:
@defmac AC_ALLOCA
@maindex ALLOCA
@vindex C_ALLOCA
@vindex HAVE_ALLOCA_H
Check how to get @code{alloca}. Tries to get a builtin version by
checking for @file{alloca.h} or the predefined C preprocessor macros
@code{__GNUC__} and @code{_AIX}. If that fails, it looks for a function
in the standard C library. If that fails, it sets the @code{make}
variable @code{ALLOCA} to @samp{alloca.o}. This variable is separate
from @code{LIBOBJS} so multiple programs can share the value of
@code{ALLOCA} without needing to create an actual library.
variable @code{ALLOCA} to @samp{alloca.o} and defines @code{C_ALLOCA}
(so programs can periodically call @samp{alloca(0)} to garbage collect).
This variable is separate from @code{LIBOBJS} so multiple programs can
share the value of @code{ALLOCA} without needing to create an actual
library.
If this macro finds @file{alloca.h}, it defines @code{HAVE_ALLOCA_H}.
@ -949,7 +952,7 @@ The following macros check for certain structures or structure members:
@defmac AC_STAT_MACROS_BROKEN
@maindex STAT_MACROS_BROKEN
@maindex STAT_MACROS_BROKEN
If the macros @code{S_ISDIR}, @code{S_ISREG} et al. defined
If the macros @code{S_ISDIR}, @code{S_ISREG} et al. defined in
@file{sys/stat.h} do not work properly (returning false positives),
define @code{STAT_MACROS_BROKEN}. This is the case on Tektronix UTekV,
Amdahl UTS and Motorola System V/88.
@ -1081,6 +1084,12 @@ define @code{inline} to be @code{__inline}. This macro calls
If the C type @code{int} is 16 bits wide, define @code{INT_16_BITS}.
@end defmac
@defmac AC_LONG_64_BITS
@maindex LONG_64_BITS
@vindex LONG_64_BITS
If the C type @code{long int} is 64 bits wide, define @code{LONG_64_BITS}.
@end defmac
@defmac AC_LONG_DOUBLE
@maindex HAVE_LONG_DOUBLE
@vindex HAVE_LONG_DOUBLE
@ -1238,15 +1247,16 @@ These macros are defined in the file @file{acgeneral.m4}.
The following macros control the kind of output that Autoconf produces.
@defmac AC_CONFIG_HEADER (@var{header-to-create})
@defmac AC_CONFIG_HEADER (@var{header-to-create} @dots{})
@maindex CONFIG_HEADER
@vindex HAVE_CONFIG_H
Make @code{AC_OUTPUT} create a file @var{header-to-create} containing C
preprocessor @code{#define} statements and replace @samp{@@DEFS@@} in
generated files with @samp{-DHAVE_CONFIG_H} instead of the value of
@code{DEFS}. @xref{Setup}, for more information on @code{AC_OUTPUT}.
This macro should be called right after @code{AC_INIT}. The usual name
for @var{header-to-create} is @file{config.h}.
Make @code{AC_OUTPUT} create one or more files @var{header-to-create}
containing C preprocessor @code{#define} statements and replace
@samp{@@DEFS@@} in generated files with @samp{-DHAVE_CONFIG_H} instead
of the value of @code{DEFS}. @xref{Setup}, for more information on
@code{AC_OUTPUT}. This macro should be called right after
@code{AC_INIT}. The usual name for @var{header-to-create} is
@file{config.h}.
If @var{header-to-create} already exists and its contents are identical
to what @code{AC_OUTPUT} would put in it, it is left alone. Doing this