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(automake.info)Macros

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Autoconf macros supplied with Automake
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`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 (Note: ANSI).

`AM_PROG_LEX'
     Like `AC_PROG_LEX' with `AC_DECL_YYTEXT' (Note: Particular Program
     Checks.), 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
     (ftp://ftp.letters.com/src/dmalloc/dmalloc.tar.gz) 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'.