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1 dnl -*- autoconf -*-
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2 dnl Process this file with autoconf to produce a configure script.
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3
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4 dnl Yes, that is a valid email address. If your mailer doesn't support nested
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5 dnl comments, then get a better mailer.
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6 AC_INIT([C-INTERCAL],[0.29],[[ais523(524\)x\((525)y)@bham.ac.uk]],[ick])
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7 AC_CONFIG_SRCDIR([src/abcess.h])
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8 AC_CONFIG_HEADER([config.h:src/configh.in])
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9 AC_CONFIG_AUX_DIR([buildaux])
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10 AM_INIT_AUTOMAKE([foreign dist-bzip2 dist-lzma tar-pax check-news
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11 no-texinfo.tex])
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12
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13 dnl Information about this version of INTERCAL.
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14 PACKAGE_VERSION=0.29
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15
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16 dnl Checks for programs.
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17 AC_PROG_YACC
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18 AC_PROG_CC
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19 AM_PROG_LEX
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20 AC_PROG_RANLIB
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21 AC_PROG_LN_S
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22 AC_CHECK_TOOL([AR],[ar])
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23 AC_SUBST(AR)
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24
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25 dnl Checks for libraries.
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26
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27 dnl Checks for header files.
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28 AC_HEADER_STDC
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29 AC_CHECK_HEADERS([sys/time.h unistd.h stdarg.h])
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30 AC_CHECK_HEADERS([stdint.h],[HAVE_STDINT_H=1])
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31 AC_SUBST(HAVE_STDINT_H)
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32
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33 dnl Checks for typedefs, structures, and compiler characteristics.
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34 dnl This Autoconf input is compatible with pre-C99 Autoconf, so to
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35 dnl check for long long AC_CHECK_SIZEOF is used to test for a nonzero result,
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36 dnl likewise for _Bool.
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37 AC_C_CONST
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38 AC_C_VOLATILE
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39 AC_CHECK_SIZEOF([long long int],[0])
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40 AC_CHECK_SIZEOF([_Bool],[0])
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41 AC_CHECK_SIZEOF([sig_atomic_t],[0],[[#include <signal.h>]])
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42 AC_HEADER_TIME
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43 AC_EXEEXT
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44 AC_OBJEXT
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45 AC_SYS_INTERPRETER
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46 AC_TYPE_SIGNAL
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47 AC_TYPE_SIZE_T
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48 AC_TYPE_UINT16_T
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49 AC_TYPE_UINT32_T
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50
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51 AC_MSG_CHECKING([[whether yyrestart() is needed]])
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52 # Write a lex program that will cause an error if yyrestart exists.
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53 echo '%%
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54 %%
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55 float yyrestart(int, ...);' | $LEX
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56 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include "${LEX_OUTPUT_ROOT}.c"
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57 ]], [[exit(0);]])],[AC_MSG_RESULT(no)],[AC_DEFINE([NEED_YYRESTART],dnl
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58 [],[Define if yyrestart() is necessary to yyparse a new file.])
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59 AC_MSG_RESULT(yes)])
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60 rm -f ${LEX_OUTPUT_ROOT}.c
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61
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62 if test "$interpval" != "no"; then
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63 AC_DEFINE([HAVE_SYS_INTERPRETER], [], [Define if #! works on your system.])
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64 fi
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65 AC_DEFINE_UNQUOTED([EXEEXT],"$EXEEXT",[Extension to use on executable files.])
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66
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67 dnl Checks for library functions.
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68 AC_CHECK_FUNCS(gettimeofday gethrtime strdup strtol strtoul snprintf vsnprintf)
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69 ICK_SAVECFLAGS=$CFLAGS
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70 CFLAGS="$CFLAGS -lrt"
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71 AC_CHECK_FUNCS(clock_gettime)
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72 CFLAGS=$ICK_SAVECFLAGS
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73
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74 dnl Substitutions.
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75 INCLUDE_HIDDEN_FROM_AUTOMAKE="include"
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76 AC_SUBST(PACKAGE_VERSION)
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77 AC_SUBST(INCLUDE_HIDDEN_FROM_AUTOMAKE)
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78
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79 AC_CONFIG_FILES([Makefile:buildaux/Makefile.in coopt.sh:src/cooptsh.in host.mak:buildaux/hostmak.in])
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80 AC_OUTPUT
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81 # After the output, chmod coopt.sh to be executable.
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82 chmod a+x coopt.sh
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83
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84 # Use prebuilt files if necessary, after config.h is generated.
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85 # Automake is capable of handling the files in question, but they need to
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86 # be in the directory configure was run in.
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87 if test ! -n "$LEX"; then
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88 cp $srcdir/prebuilt/lexer.c $ac_pwd/lexer.c
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89 AC_MSG_WARN([No version of lex was found; using prebuilt lexer.])
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90 AC_MSG_WARN([Changes to src/lexer.l will be ignored.])
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91 fi
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92 if test ! -n "$YACC"; then
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93 cp $srcdir/prebuilt/parser.c $ac_pwd/parser.c
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94 cp $srcdir/prebuilt/parser.h $ac_pwd/parser.h
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95 cp $srcdir/prebuilt/oil-oil.c $ac_pwd/oil-oil.c
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96 AC_MSG_WARN([No version of yacc was found; using prebuilt parser.])
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97 AC_MSG_WARN([Changes to src/parser.y and src/oil.y will be ingored.])
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98 fi
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99
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100 # Configure again, for the build system, if necessary.
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101 # It's simpler the second time round as we don't care about things like
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102 # installation dirs, just about how to do things like run the compiler.
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103 if test "$cross_compiling" != yes; then
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104 cp config.h bconfig.h
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105 exit 0
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106 fi
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107
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108 cd $ac_pwd;
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109
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110 # This trick for unsetting variables comes from the autoconf manual
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111
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112 # "|| exit" suppresses any "Segmentation fault" message.
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113 if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
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114 unset=unset
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115 else
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116 unset=false
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117 fi
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118
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119 AC_DEFUN([GEN_BUILD_CMD_LINE],[
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120 BUILD_$1_ARG="FOO=BAR"
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121 if test ! "x$[]$1_FOR_BUILD" == x;
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122 then
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123 BUILD_$1_ARG="$1=$[]$1_FOR_BUILD";
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124 fi
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125 $1=foo
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126 $unset $1 || $1=''])
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127
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128 GEN_BUILD_CMD_LINE(CC)
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129 GEN_BUILD_CMD_LINE(CFLAGS)
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130 GEN_BUILD_CMD_LINE(LDFLAGS)
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131 GEN_BUILD_CMD_LINE(LIBS)
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132 GEN_BUILD_CMD_LINE(CPPFLAGS)
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133 GEN_BUILD_CMD_LINE(CPP)
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134
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135 BUILD_MACHINE_ARG="FOO=BAR"
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136 if test ! "x$build_alias" == x;
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137 then
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138 BUILD_MACHINE_ARG="--build=$build_alias"
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139 fi
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140
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141 # Run the new configure script.
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142 mv config.status config.status.save
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143 (env -i "PATH=$PATH" $srcdir/buildaux/buildconfig "$BUILD_MACHINE_ARG" "$BUILD_CC_ARG" "$BUILD_CFLAGS_ARG" "$BUILD_LDFLAGS_ARG" "$BUILD_LIBS_ARG" "$BUILD_CPPFLAGS_ARG" "$BUILD_CPP_ARG")
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144 mv config.status config.status.build
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145 mv config.status.save config.status
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146
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