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Autoconf macros supplied with Automake

AM_CONFIG_HEADER

Automake will generate rules to automatically regenerate the config header. If you do use this macro, you must create the file `stamp-h.in' in your source directory. It can be empty.

AM_ENABLE_MULTILIB

This is used when a "multilib" library is being built. A multilib library is one that is built multiple times, once per target flag combination. This is only useful when the library is intended to be cross-compiled. The first optional argument is the name of the `Makefile' being generated; it defaults to `Makefile'. The second option argument is used to find the top source directory; it defaults to the empty string (generally this should not be used unless you are familiar with the internals).

AM_FUNC_STRTOD

If the strtod function is not available, or does not work correctly (like the one on SunOS 5.4), add `strtod.o' to output variable LIBOBJS.

AM_FUNC_ERROR_AT_LINE

If the function error_at_line is not found, then add `error.o' to LIBOBJS.

AM_FUNC_MKTIME

Check for a working mktime function. If not found, add `mktime.o' to `LIBOBJS'.

AM_FUNC_OBSTACK

Check for the GNU obstacks code; if not found, add `obstack.o' to `LIBOBJS'.

AM_C_PROTOTYPES

Check to see if function prototypes are understood by the compiler. If so, define `PROTOTYPES' and set the output variables `U' and `ANSI2KNR' to the empty string. Otherwise, set `U' to `_' and `ANSI2KNR' to `./ansi2knr'. Automake uses these values to implement automatic de-ANSI-fication.

AM_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL

If the use of TIOCGWINSZ requires `<sys/ioctl.h>', then define GWINSZ_IN_SYS_IOCTL. Otherwise TIOCGWINSZ can be found in `<termios.h>'.

AM_INIT_AUTOMAKE

Runs many macros that most `configure.in''s need. This macro has two required arguments, the package and the version number. By default this macro AC_DEFINE's `PACKAGE' and `VERSION'. This can be avoided by passing in a non-empty third argument.

AM_PATH_LISPDIR

Searches for the program emacs, and, if found, sets the output variable lispdir to the full path to Emacs' site-lisp directory.

AM_PROG_CC_STDC

If the C compiler in not in ANSI C mode by default, try to add an option to output variable CC to make it so. This macro tries various options that select ANSI C on some system or another. It considers the compiler to be in ANSI C mode if it handles function prototypes correctly. If you use this macro, you should check after calling it whether the C compiler has been set to accept ANSI C; if not, the shell variable am_cv_prog_cc_stdc is set to `no'. If you wrote your source code in ANSI C, you can make an un-ANSIfied copy of it by using the ansi2knr option (see section Automatic de-ANSI-fication).

AM_PROG_LEX

Like AC_PROG_LEX with AC_DECL_YYTEXT (see section `Particular Program Checks' in The Autoconf Manual), but uses the missing script on systems that do not have lex. `HP-UX 10' is one such system.

AM_SANITY_CHECK

This checks to make sure that a file created in the build directory is newer than a file in the source directory. This can fail on systems where the clock is set incorrectly. This macro is automatically run from AM_INIT_AUTOMAKE.

AM_SYS_POSIX_TERMIOS

Check to see if POSIX termios headers and functions are available on the system. If so, set the shell variable am_cv_sys_posix_termios to `yes'. If not, set the variable to `no'.

AM_TYPE_PTRDIFF_T

Define `HAVE_PTRDIFF_T' if the type `ptrdiff_t' is defined in `<stddef.h>'.

AM_WITH_DMALLOC

Add support for the dmalloc package. If the user configures with `--with-dmalloc', then define WITH_DMALLOC and add `-ldmalloc' to LIBS.

AM_WITH_REGEX

Adds `--with-regex' to the configure command line. If specified (the default), then the `regex' regular expression library is used, `regex.o' is put into `LIBOBJS', and `WITH_REGEX' is defined.. If `--without-regex' is given, then the `rx' regular expression library is used, and `rx.o' is put into `LIBOBJS'.

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