[bison.git] / m4 / m4.m4

# serial 1                                                   -*- Autoconf -*-

# BISON_AC_PROG_GNU_M4
# --------------------
# Check for GNU m4, at least 1.3 (supports frozen files).
AC_DEFUN([BISON_AC_PROG_GNU_M4],
[AC_PATH_PROGS(M4, gm4 gnum4 m4, m4)
AC_CACHE_CHECK([whether m4 supports frozen files],
               [ac_cv_prog_gnu_m4],
[ac_cv_prog_gnu_m4=no
if test x"$M4" != x; then
  case `$M4 --help < /dev/null 2>&1` in
    *reload-state*) ac_cv_prog_gnu_m4=yes ;;
  esac
fi])
])# BISON_AC_PROG_GNU_M4
Commit	Line	Data
1e24cc5b	1	# serial 1 -- Autoconf --
e79137ac AD	2
	3	# BISON_AC_PROG_GNU_M4
	4	# --------------------
	5	# Check for GNU m4, at least 1.3 (supports frozen files).
	6	AC_DEFUN([BISON_AC_PROG_GNU_M4],
	7	[AC_PATH_PROGS(M4, gm4 gnum4 m4, m4)
1e24cc5b AD	8	AC_CACHE_CHECK([whether m4 supports frozen files],
1e24cc5b AD	9	[ac_cv_prog_gnu_m4],
e79137ac AD	10	[ac_cv_prog_gnu_m4=no
	11	if test x"$M4" != x; then
	12	case `$M4 --help < /dev/null 2>&1` in
	13	reload-state) ac_cv_prog_gnu_m4=yes ;;
	14	esac
1e24cc5b AD	15	fi])
1e24cc5b AD	16	])# BISON_AC_PROG_GNU_M4