1 | # Local additions to Autoconf macros.
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2 | # Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
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3 | # François Pinard <[email protected]>, 1992.
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4 |
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5 | # [TS:Aug/95] - chopped out the NLS stuff which I don't support
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6 |
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7 | ## ------------------------------- ##
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8 | ## Check for function prototypes. ##
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9 | ## ------------------------------- ##
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10 |
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11 | AC_DEFUN(fp_C_PROTOTYPES,
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12 | [AC_REQUIRE([fp_PROG_CC_STDC])
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13 | AC_MSG_CHECKING([for function prototypes])
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14 | if test "$ac_cv_prog_cc_stdc" != no; then
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15 | AC_MSG_RESULT(yes)
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16 | AC_DEFINE(PROTOTYPES)
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17 | U= ANSI2KNR=
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18 | else
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19 | AC_MSG_RESULT(no)
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20 | U=_ ANSI2KNR=ansi2knr
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21 | fi
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22 | AC_SUBST(U)dnl
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23 | AC_SUBST(ANSI2KNR)dnl
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24 | ])
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25 |
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26 | ## ----------------------------------------- ##
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27 | ## ANSIfy the C compiler whenever possible. ##
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28 | ## ----------------------------------------- ##
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29 |
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30 | # @defmac AC_PROG_CC_STDC
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31 | # @maindex PROG_CC_STDC
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32 | # @ovindex CC
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33 | # If the C compiler in not in ANSI C mode by default, try to add an option
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34 | # to output variable @code{CC} to make it so. This macro tries various
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35 | # options that select ANSI C on some system or another. It considers the
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36 | # compiler to be in ANSI C mode if it defines @code{__STDC__} to 1 and
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37 | # handles function prototypes correctly.
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38 | #
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39 | # If you use this macro, you should check after calling it whether the C
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40 | # compiler has been set to accept ANSI C; if not, the shell variable
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41 | # @code{ac_cv_prog_cc_stdc} is set to @samp{no}. If you wrote your source
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42 | # code in ANSI C, you can make an un-ANSIfied copy of it by using the
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43 | # program @code{ansi2knr}, which comes with Ghostscript.
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44 | # @end defmac
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45 |
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46 | AC_DEFUN(fp_PROG_CC_STDC,
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47 | [AC_MSG_CHECKING(for ${CC-cc} option to accept ANSI C)
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48 | AC_CACHE_VAL(ac_cv_prog_cc_stdc,
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49 | [ac_cv_prog_cc_stdc=no
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50 | ac_save_CFLAGS="$CFLAGS"
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51 | # Don't try gcc -ansi; that turns off useful extensions and
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52 | # breaks some systems' header files.
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53 | # AIX -qlanglvl=ansi
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54 | # Ultrix and OSF/1 -std1
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55 | # HP-UX -Aa -D_HPUX_SOURCE
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56 | # SVR4 -Xc
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57 | for ac_arg in "" -qlanglvl=ansi -std1 "-Aa -D_HPUX_SOURCE" -Xc
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58 | do
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59 | CFLAGS="$ac_save_CFLAGS $ac_arg"
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60 | AC_TRY_COMPILE(
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61 | [#if !defined(__STDC__) || __STDC__ != 1
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62 | choke me
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63 | #endif
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64 | ], [int test (int i, double x);
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65 | struct s1 {int (*f) (int a);};
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66 | struct s2 {int (*f) (double a);};],
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67 | [ac_cv_prog_cc_stdc="$ac_arg"; break])
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68 | done
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69 | CFLAGS="$ac_save_CFLAGS"
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70 | ])
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71 | AC_MSG_RESULT($ac_cv_prog_cc_stdc)
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72 | case "x$ac_cv_prog_cc_stdc" in
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73 | x|xno) ;;
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74 | *) CC="$CC $ac_cv_prog_cc_stdc" ;;
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75 | esac
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76 | ])
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77 |
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78 | ## --------------------------------------------------------- ##
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79 | ## Use AC_PROG_INSTALL, supplementing it with INSTALL_SCRIPT ##
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80 | ## substitution. ##
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81 | ## --------------------------------------------------------- ##
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82 |
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83 | AC_DEFUN(fp_PROG_INSTALL,
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84 | [AC_PROG_INSTALL
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85 | test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL} -m 755'
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86 | AC_SUBST(INSTALL_SCRIPT)dnl
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87 | ])
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88 |
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89 | ## ----------------------------------- ##
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90 | ## Check if --with-dmalloc was given. ##
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91 | ## ----------------------------------- ##
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92 |
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93 | # I just checked, and GNU rx seems to work fine with a slightly
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94 | # modified GNU m4. So, I put out the test below in my aclocal.m4,
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95 | # and will try to use it in my things. The idea is to distribute
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96 | # rx.[hc] and regex.[hc] together, for a while. The WITH_REGEX symbol
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97 | # (which should also be documented in acconfig.h) is used to decide
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98 | # which of regex.h or rx.h should be included in the application.
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99 | #
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100 | # If `./configure --with-regex' is given, the package will use
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101 | # the older regex. Else, a check is made to see if rx is already
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102 | # installed, as with newer Linux'es. If not found, the package will
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103 | # use the rx from the distribution. If found, the package will use
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104 | # the system's rx which, on Linux at least, will result in a smaller
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105 | # executable file.
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106 |
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107 | AC_DEFUN(fp_WITH_DMALLOC,
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108 | [AC_MSG_CHECKING(if malloc debugging is wanted)
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109 | AC_ARG_WITH(dmalloc,
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110 | [ --with-dmalloc use dmalloc, as in
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111 | ftp://ftp.letters.com/src/dmalloc/dmalloc.tar.gz],
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112 | [if test "$withval" = yes; then
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113 | AC_MSG_RESULT(yes)
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114 | AC_DEFINE(WITH_DMALLOC)
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115 | LIBS="$LIBS -ldmalloc"
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116 | LDFLAGS="$LDFLAGS -g"
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117 | else
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118 | AC_MSG_RESULT(no)
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119 | fi], [AC_MSG_RESULT(no)])
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120 | ])
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121 |
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122 | ## --------------------------------- ##
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123 | ## Check if --with-regex was given. ##
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124 | ## --------------------------------- ##
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125 |
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126 | AC_DEFUN(fp_WITH_REGEX,
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127 | [AC_MSG_CHECKING(which of rx or regex is wanted)
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128 | AC_ARG_WITH(regex,
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129 | [ --with-regex use older regex in lieu of GNU rx for matching],
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130 | [if test "$withval" = yes; then
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131 | ac_with_regex=1
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132 | AC_MSG_RESULT(regex)
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133 | AC_DEFINE(WITH_REGEX)
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134 | AC_LIBOBJ([regex])
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135 | fi])
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136 | if test -z "$ac_with_regex"; then
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137 | AC_MSG_RESULT(rx)
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138 | AC_CHECK_FUNC(re_rx_search, , [AC_LIBOBJ([rx])])
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139 | fi
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140 | ])
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