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Move INTERRUPT_INPUT from src/s to configure

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* configure.ac (INTERRUPT_INPUT): Move here from src/s.

* src/s/darwin.h, src/s/gnu-linux.h, src/s/template.h:
Move INTERRUPT_INPUT to configure.
This commit is contained in:
Glenn Morris 2012-07-11 13:04:19 -04:00
parent 7ad4afe1f5
commit c43fb4c32d
6 changed files with 37 additions and 51 deletions
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4
ChangeLog
View file

@ -1,3 +1,7 @@
2012-07-11 Glenn Morris <rgm@gnu.org>
* configure.ac (INTERRUPT_INPUT): Move here from src/s.
2012-07-11 Paul Eggert <eggert@cs.ucla.edu>
* configure.ac (tzset): Remove check that's redundant with gnulib.

28
configure.ac
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@ -3172,6 +3172,34 @@ AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
[Name of the default sound device.])
dnl Emacs can read input using SIGIO and buffering characters itself,
dnl or using CBREAK mode and making C-g cause SIGINT.
dnl The choice is controlled by the variable interrupt_input.
dnl
dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
dnl
dnl Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
dnl to indicate whether or not signal-driven I/O is possible. It uses
dnl INTERRUPT_INPUT to decide whether to use it by default.
dnl
dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
dnl CBREAK mode has two disadvantages
dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
dnl I hear that in system V this problem does not exist.
dnl 2) Control-G causes output to be discarded.
dnl I do not know whether this can be fixed in system V.
dnl
dnl Another method of doing input is planned but not implemented.
dnl It would have Emacs fork off a separate process
dnl to read the input and send it to the true Emacs process
dnl through a pipe.
case $opsys in
darwin | gnu-linux | gnu-kfreebsd )
AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
;;
esac
AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
"typing" a signal character on the pty.])

5
src/ChangeLog
View file

@ -1,3 +1,8 @@
2012-07-11 Glenn Morris <rgm@gnu.org>
* s/darwin.h, s/gnu-linux.h, s/template.h:
Move INTERRUPT_INPUT to configure.
2012-07-11 Dmitry Antipov <dmantipov@yandex.ru>
Minor adjustments to interning code.

24
src/s/darwin.h
View file

@ -30,30 +30,6 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
distinguish OS X from pure Darwin. */
#define DARWIN_OS
/* Emacs can read input using SIGIO and buffering characters itself,
or using CBREAK mode and making C-g cause SIGINT.
The choice is controlled by the variable interrupt_input.
Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
to indicate whether or not signal-driven I/O is possible. It uses
INTERRUPT_INPUT to decide whether to use it by default.
SIGIO can be used only on systems that implement it (4.2 and 4.3).
CBREAK mode has two disadvantages
1) At least in 4.2, it is impossible to handle the Meta key properly.
I hear that in system V this problem does not exist.
2) Control-G causes output to be discarded.
I do not know whether this can be fixed in system V.
Another method of doing input is planned but not implemented.
It would have Emacs fork off a separate process
to read the input and send it to the true Emacs process
through a pipe. */
#define INTERRUPT_INPUT
/* Letter to use in finding device name of first pty,
if system supports pty's. 'a' means it is /dev/ptya0 */
#define FIRST_PTY_LETTER 'p'

4
src/s/gnu-linux.h
View file

@ -76,10 +76,6 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
your system and must be used only through an encapsulation
(Which you should place, by convention, in sysdep.c). */
#ifdef emacs
#define INTERRUPT_INPUT
#endif
#define POSIX /* affects getpagesize.h and systty.h */
/* This is to work around mysterious gcc failures in some system versions.

23
src/s/template.h
View file

@ -29,29 +29,6 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* #define BSD4_2 */
/* #define BSD_SYSTEM */
/* Emacs can read input using SIGIO and buffering characters itself,
or using CBREAK mode and making C-g cause SIGINT.
The choice is controlled by the variable interrupt_input.
Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
to indicate whether or not signal-driven I/O is possible. It uses
INTERRUPT_INPUT to decide whether to use it by default.
SIGIO can be used only on systems that implement it (4.2 and 4.3).
CBREAK mode has two disadvantages
1) At least in 4.2, it is impossible to handle the Meta key properly.
I hear that in system V this problem does not exist.
2) Control-G causes output to be discarded.
I do not know whether this can be fixed in system V.
Another method of doing input is planned but not implemented.
It would have Emacs fork off a separate process
to read the input and send it to the true Emacs process
through a pipe. */
#define INTERRUPT_INPUT
/* Letter to use in finding device name of first pty,
if system supports pty's. 'a' means it is /dev/ptya0. */
#define FIRST_PTY_LETTER 'a'