| 1 | dnl Process this file with autoconf to produce a configure script.
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| 2 |
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| 3 | dnl This file is part of flex.
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| 4 |
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| 5 | dnl Redistribution and use in source and binary forms, with or without
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| 6 | dnl modification, are permitted provided that the following conditions
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| 7 | dnl are met:
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| 8 |
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| 9 | dnl 1. Redistributions of source code must retain the above copyright
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| 10 | dnl notice, this list of conditions and the following disclaimer.
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| 11 | dnl 2. Redistributions in binary form must reproduce the above copyright
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| 12 | dnl notice, this list of conditions and the following disclaimer in the
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| 13 | dnl documentation and/or other materials provided with the distribution.
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| 14 |
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| 15 | dnl Neither the name of the University nor the names of its contributors
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| 16 | dnl may be used to endorse or promote products derived from this software
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| 17 | dnl without specific prior written permission.
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| 18 |
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| 19 | dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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| 20 | dnl IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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| 21 | dnl WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 22 | dnl PURPOSE.
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| 23 |
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| 24 | dnl autoconf requirements and initialization
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| 25 |
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| 26 | AC_PREREQ(2.54)
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| 27 | AC_INIT(flex,2.5.33,[email protected])
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| 28 | AC_CONFIG_SRCDIR(scan.l)
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| 29 | AM_INIT_AUTOMAKE
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| 30 | AC_CONFIG_HEADER(config.h:conf.in)
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| 31 |
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| 32 | dnl checks for programs
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| 33 |
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| 34 | AM_GNU_GETTEXT([external])
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| 35 | AM_GNU_GETTEXT_VERSION(0.12)
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| 36 |
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| 37 | AC_PROG_YACC
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| 38 | AM_PROG_LEX
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| 39 | AC_PROG_CC
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| 40 | AC_PROG_CXX
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| 41 | AC_PROG_LN_S
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| 42 | AC_PROG_RANLIB
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| 43 |
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| 44 | AC_PATH_PROG(BISON, bison,bison)
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| 45 | AC_PATH_PROG(HELP2MAN, help2man, help2man)
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| 46 |
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| 47 |
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| 48 | # Check for a GNU m4 that supports --prefix-builtins
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| 49 | AC_PATH_PROGS(M4, gm4 gnum4 m4, m4)
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| 50 | if test x"$M4" != x; then
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| 51 | AC_MSG_CHECKING([for GNU m4])
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| 52 | case `$M4 --help < /dev/null 2>&1` in
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| 53 | *prefix-builtins*) AC_MSG_RESULT(yes) ;;
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| 54 | *) AC_MSG_RESULT(no) ;
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| 55 | AC_MSG_ERROR([GNU M4 1.4 is required]) ;;
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| 56 | esac
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| 57 | else
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| 58 | AC_MSG_ERROR([GNU M4 1.4 is required]) ;
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| 59 | fi
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| 60 | AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
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| 61 |
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| 62 | AC_PATH_PROG(INDENT, indent, indent)
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| 63 | dnl if INDENT is set to 'indent' then we didn't find indent
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| 64 | if test "$INDENT" != indent ; then
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| 65 | AC_MSG_CHECKING(if $INDENT is GNU indent)
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| 66 | if $INDENT --version 2>/dev/null | head -n 1|grep "GNU indent" > /dev/null ; then
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| 67 | AC_MSG_RESULT(yes)
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| 68 | else
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| 69 | AC_MSG_RESULT(no)
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| 70 | AC_MSG_WARN($INDENT does not appear to be GNU indent.)
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| 71 | fi
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| 72 | else
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| 73 | AC_MSG_WARN(no indent program found: make indent target will not function)
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| 74 | fi
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| 75 |
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| 76 | dnl checks for libraries
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| 77 | AC_CHECK_LIB(m, log)
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| 78 |
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| 79 | dnl checks for header files
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| 80 |
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| 81 | AC_HEADER_STDC
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