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1 dnl aclocal.m4 -- extra macros for configuring Octave |
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2 dnl |
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3 dnl Copyright (C) 1996 John W. Eaton |
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4 dnl |
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5 dnl This file is part of Octave. |
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6 dnl |
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7 dnl Octave is free software; you can redistribute it and/or modify it |
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8 dnl under the terms of the GNU General Public License as published by the |
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9 dnl Free Software Foundation; either version 2, or (at your option) any |
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10 dnl later version. |
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11 dnl |
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12 dnl Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 dnl for more details. |
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16 dnl |
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17 dnl You should have received a copy of the GNU General Public License |
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18 dnl along with Octave; see the file COPYING. If not, write to the Free |
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19 dnl Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
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20 dnl 02111-1307, USA. |
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21 dnl |
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22 dnl ---------------------------------------------------------------------- |
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23 dnl |
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24 dnl Figure out the hardware-vendor-os info. |
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25 dnl |
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26 dnl OCTAVE_HOST_TYPE |
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27 AC_DEFUN(OCTAVE_HOST_TYPE, |
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28 [AC_CANONICAL_HOST |
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29 if test -z "$host"; then |
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30 host=unknown |
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31 fi |
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32 target_host_type=$host |
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33 canonical_host_type=$host |
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34 if test "$host" = unknown; then |
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35 AC_MSG_WARN([configuring Octave for unknown system type |
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36 ]) |
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37 fi |
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38 AC_SUBST(target_host_type)]) |
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39 dnl |
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40 dnl Set default value for a variable and substitute it. |
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41 dnl |
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42 dnl OCTAVE_SET_DEFAULT |
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43 AC_DEFUN(OCTAVE_SET_DEFAULT, |
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44 [ifelse($#, 2, [$1=$2 |
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45 ])dnl |
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46 AC_MSG_RESULT([defining $1 to be $$1]) |
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47 AC_SUBST($1)]) |
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48 dnl |
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49 dnl |
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50 dnl OCTAVE_CHECK_EXCLUSIVE_WITH_OPTIONS |
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51 AC_DEFUN(OCTAVE_CHECK_EXCLUSIVE_WITH_OPTIONS, |
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52 [if test "${with_$1+set}" = set; then |
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53 if test "${with_$2+set}" = set; then |
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54 if test "$with_$2" = no; then |
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55 true |
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56 else |
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57 $3 |
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58 fi |
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59 fi |
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60 fi]) |
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61 dnl |
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62 dnl |
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63 dnl See what libraries are used by the C++ compiler. Need this for |
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64 dnl dynamic linking. |
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65 dnl |
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66 dnl Write a minimal program and compile it with -v. I don't know what |
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67 dnl to do if your compiler doesn't have -v... |
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68 dnl |
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69 dnl OCTAVE_CXXLIBS() |
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70 AC_DEFUN(OCTAVE_CXXLIBS, |
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71 [AC_REQUIRE([AC_PROG_CXXCPP]) |
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72 AC_REQUIRE([AC_PROG_CXX]) |
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73 AC_MSG_CHECKING([for C++ libraries]) |
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74 AC_CACHE_VAL(octave_cv_cxxlibs, |
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75 [AC_LANG_SAVE |
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76 AC_LANG_CPLUSPLUS |
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77 XCXXFLAGS="$CXXFLAGS" |
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78 CXXFLAGS="$XCXXFLAGS -v" |
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79 export CXXFLAGS |
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80 dnl |
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81 dnl This may be too tricky and break with future autoconf releases, |
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82 dnl but it works with version 2.3, even with the Ultrix /bin/sh. |
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83 dnl |
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84 dnl I don't think that stripping commas out of this will ever hurt. |
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85 dnl |
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86 coutput=`( AC_TRY_LINK([], [], []) ) AC_FD_CC>&1 | sed 's/,/ /g'` |
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87 CXXFLAGS="$XCXXFLAGS" |
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88 AC_LANG_RESTORE |
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89 changequote(, )dnl |
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90 dnl |
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91 octave_cv_cxxlibs= |
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92 lflags= |
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93 want_arg= |
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94 dnl |
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95 for arg in $coutput; do |
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96 if test x$want_arg = x; then |
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97 want_arg= |
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98 case $arg in |
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99 /*.a) |
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100 exists=false |
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101 for f in $lflags; do |
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102 if test x$arg = x$f; then |
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103 exists=true |
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104 fi |
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105 done |
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106 if $exists; then |
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107 arg= |
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108 else |
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109 lflags="$lflags $arg" |
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110 fi |
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111 ;; |
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112 -[LR]*) |
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113 exists=false |
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114 for f in $lflags; do |
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115 if test x$arg = x$f; then |
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116 exists=true |
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117 fi |
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118 done |
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119 ;; |
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120 -l*) |
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121 if test x$arg = x-lang-c++; then |
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122 arg= |
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123 else |
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124 lflags="$lflags $arg" |
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125 fi |
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126 ;; |
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127 -u) |
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128 want_arg=$arg |
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129 ;; |
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130 *) |
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131 arg= |
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132 ;; |
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133 esac |
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134 else |
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135 want_arg= |
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136 fi |
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137 if test x$arg != x; then |
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138 octave_cv_cxxlibs="$octave_cv_cxxlibs $arg" |
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139 fi |
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140 done |
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141 dnl |
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142 changequote([, ])]) |
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143 AC_MSG_RESULT([$octave_cv_cxxlibs]) |
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144 CXXLIBS="$octave_cv_cxxlibs" |
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145 AC_SUBST(CXXLIBS)]) |
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146 dnl |
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147 dnl See what libraries are used by the Fortran compiler. |
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148 dnl |
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149 dnl Write a minimal program and compile it with -v. I don't know what |
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150 dnl to do if your compiler doesn't have -v... |
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151 dnl |
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152 dnl OCTAVE_FLIBS() |
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153 AC_DEFUN(OCTAVE_FLIBS, |
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154 [AC_MSG_CHECKING([for Fortran libraries]) |
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155 AC_CACHE_VAL(octave_cv_flibs, |
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156 [changequote(, )dnl |
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157 echo " END" > conftest.f |
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158 foutput=`${F77-f77} -v -o conftest conftest.f 2>&1` |
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159 dnl |
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160 dnl The easiest thing to do for xlf output is to replace all the commas |
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161 dnl with spaces. Try to only do that if the output is really from xlf, |
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162 dnl since doing that causes problems on other systems. |
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163 dnl |
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164 xlf_p=`echo $foutput | grep xlfentry` |
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165 if test -n "$xlf_p"; then |
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166 foutput=`echo $foutput | sed 's/,/ /g'` |
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167 fi |
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168 dnl |
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169 ld_run_path=`echo $foutput | \ |
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170 sed -n -e 's/^.*LD_RUN_PATH *= *\([^ ]*\).*/\1/p'` |
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171 dnl |
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172 dnl We are only supposed to find this on Solaris systems, and this |
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173 dnl substitution is probably only going to work with gcc on those |
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174 dnl systems... |
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175 dnl |
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176 if test -n "$ld_run_path"; then |
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177 if test "$ac_cv_prog_gcc" = yes; then |
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178 ld_run_path="-Xlinker -R -Xlinker $ld_run_path" |
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179 else |
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180 ld_run_path="-R $ld_run_path" |
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181 fi |
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182 fi |
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183 dnl |
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184 flibs= |
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185 lflags= |
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186 dnl |
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187 dnl If want_arg is set, we know we want the arg to be added to the list, |
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188 dnl so we don't have to examine it. |
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189 dnl |
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190 want_arg= |
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191 dnl |
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192 for arg in $foutput; do |
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193 old_want_arg=$want_arg |
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194 want_arg= |
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195 case "$old_want_arg" in |
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196 '') |
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197 case $arg in |
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198 /*.a) |
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199 exists=false |
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200 for f in $lflags; do |
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201 if test x$arg = x$f; then |
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202 exists=true |
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203 fi |
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204 done |
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205 if $exists; then |
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206 arg= |
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207 else |
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208 lflags="$lflags $arg" |
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209 fi |
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210 ;; |
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211 -bI:*) |
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212 exists=false |
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213 for f in $lflags; do |
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214 if test x$arg = x$f; then |
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215 exists=true |
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216 fi |
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217 done |
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218 if $exists; then |
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219 arg= |
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220 else |
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221 if test "$ac_cv_prog_gcc" = yes; then |
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222 lflags="$lflags -Xlinker $arg" |
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223 else |
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224 lflags="$lflags $arg" |
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225 fi |
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226 fi |
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227 ;; |
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228 -lang*) |
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229 arg= |
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230 ;; |
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231 -[lLR]) |
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232 want_arg=$arg |
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233 arg= |
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234 ;; |
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235 -[lLR]*) |
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236 exists=false |
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237 for f in $lflags; do |
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238 if test x$arg = x$f; then |
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239 exists=true |
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240 fi |
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241 done |
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242 if $exists || test x$arg = x-lm -o x$arg = x-lc; then |
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243 arg= |
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244 else |
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245 lflags="$lflags $arg" |
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246 fi |
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247 ;; |
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248 -u) |
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249 want_arg=$arg |
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250 ;; |
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251 -Y) |
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252 want_arg=$arg |
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253 arg= |
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254 ;; |
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255 *) |
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256 arg= |
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257 ;; |
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258 esac |
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259 ;; |
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260 -[lLR]) |
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261 arg="$old_want_arg $arg" |
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262 ;; |
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263 -Y) |
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264 dnl |
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265 dnl Should probably try to ensure unique directory options here too. |
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266 dnl This probably only applies to Solaris systems, and then will only |
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267 dnl work with gcc... |
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268 dnl |
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269 arg=`echo $arg | sed -e 's%^P,%%'` |
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270 SAVE_IFS=$IFS |
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271 IFS=: |
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272 list= |
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273 for elt in $arg; do |
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274 list="$list -L$elt" |
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275 done |
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276 IFS=$SAVE_IFS |
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277 arg="$list" |
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278 ;; |
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279 esac |
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280 dnl |
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281 if test -n "$arg"; then |
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282 flibs="$flibs $arg" |
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283 fi |
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284 done |
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285 if test -n "$ld_run_path"; then |
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286 flibs_result="$ld_run_path $flibs" |
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287 else |
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288 flibs_result="$flibs" |
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289 fi |
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290 changequote([, ])dnl |
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291 octave_cv_flibs="$flibs_result"]) |
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292 FLIBS="$octave_cv_flibs" |
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293 AC_MSG_RESULT([$FLIBS])]) |
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294 dnl |
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295 dnl See if the Fortran compiler uses uppercase external names. |
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296 dnl |
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297 dnl OCTAVE_F77_UPPERCASE_NAMES() |
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298 AC_DEFUN(OCTAVE_F77_UPPERCASE_NAMES, |
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299 [AC_MSG_CHECKING([whether $F77 uses uppercase external names]) |
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300 AC_CACHE_VAL(octave_cv_f77_uppercase_names, |
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301 [octave_cv_f77_uppercase_names=no |
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302 cat > conftest.f <<EOF |
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303 subroutine xxyyzz () |
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304 return |
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305 end |
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306 EOF |
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307 if ${F77-f77} -c conftest.f 1>&AC_FD_CC 2>&AC_FD_CC; then |
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308 if test "`${NM-nm} conftest.o | grep XXYYZZ`" != ""; then |
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309 octave_cv_f77_uppercase_names=yes |
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310 fi |
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311 fi]) |
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312 AC_MSG_RESULT([$octave_cv_f77_uppercase_names]) |
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313 if test "$octave_cv_f77_uppercase_names" = yes; then |
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314 AC_DEFINE(F77_UPPERCASE_NAMES, 1) |
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315 fi]) |
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316 dnl |
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317 dnl See if the Fortran compiler appends underscores to external names. |
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318 dnl |
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319 dnl OCTAVE_F77_APPEND_UNDERSCORE() |
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320 AC_DEFUN(OCTAVE_F77_APPEND_UNDERSCORE, |
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321 [AC_MSG_CHECKING([whether $F77 appends underscores to external names]) |
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322 AC_REQUIRE([OCTAVE_F77_UPPERCASE_NAMES]) |
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323 AC_CACHE_VAL(octave_cv_f77_append_underscore, |
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324 [octave_cv_f77_append_underscore=no |
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325 cat > conftest.f <<EOF |
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326 subroutine xxyyzz () |
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327 return |
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328 end |
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329 EOF |
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330 if ${F77-f77} -c conftest.f 1>&AC_FD_CC 2>&AC_FD_CC; then |
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331 if test "$octave_cv_f77_uppercase_names" = yes; then |
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332 if test "`${NM-nm} conftest.o | grep XXYYZZ_`" != ""; then |
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333 octave_cv_f77_append_underscore=yes |
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334 fi |
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335 else |
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336 if test "`${NM-nm} conftest.o | grep xxyyzz_`" != ""; then |
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337 octave_cv_f77_append_underscore=yes |
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338 fi |
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339 fi |
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340 fi]) |
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341 AC_MSG_RESULT([$octave_cv_f77_append_underscore]) |
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342 if test "$octave_cv_f77_append_underscore" = yes; then |
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343 AC_DEFINE(F77_APPEND_UNDERSCORE, 1) |
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344 fi]) |
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345 dnl |
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1232
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346 dnl See if the Fortran compiler is compatible with f2c. |
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347 dnl |
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348 dnl Write a minimal program, compile it, and see if it works as |
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349 dnl expected. |
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350 dnl |
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351 dnl OCTAVE_F2C_F77_COMPAT() |
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352 AC_DEFUN(OCTAVE_F2C_F77_COMPAT, |
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353 [AC_REQUIRE([OCTAVE_FLIBS]) |
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354 AC_REQUIRE([OCTAVE_F77_APPEND_UNDERSCORE]) |
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355 AC_MSG_CHECKING([$F77/f2c compatibility]) |
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356 AC_CACHE_VAL(octave_cv_f2c_f77_compat, |
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357 [trap 'rm -f ftest* ctest* core; exit 1' 1 3 15 |
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358 octave_cv_f2c_f77_compat=no |
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359 cat > ftest.f <<EOF |
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360 INTEGER FUNCTION FORSUB (C, D) |
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361 CHARACTER *(*) C |
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362 INTEGER L |
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363 DOUBLE PRECISION D |
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364 L = LEN (C) |
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365 WRITE (*, '(A,1X,I2)') C(1:L), INT (D) |
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366 FORSUB = 1 |
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367 RETURN |
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368 END |
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369 EOF |
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370 ${F77-f77} -c ftest.f 1>&AC_FD_CC 2>&AC_FD_CC |
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371 dnl |
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372 changequote(, ) |
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373 cat > ctest.c <<EOF |
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374 #include "confdefs.h" |
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375 static char s[14]; |
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376 int main () |
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377 { |
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378 double d = 10.0; |
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379 int len; |
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380 strcpy (s, "FOO-I-HITHERE"); |
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381 len = strlen (s); |
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382 #ifdef F77_APPEND_UNDERSCORE |
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383 return (! forsub_ (s, &d, len)); |
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384 #else |
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385 return (! forsub (s, &d, len)); |
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386 #endif |
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387 } |
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388 #if defined (sun) |
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389 int MAIN_ () { return 0; } |
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390 #elif defined (linux) && defined (__ELF__) |
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391 int MAIN__ () { return 0; } |
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392 #endif |
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393 EOF |
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394 changequote([, ]) |
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395 dnl |
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396 if ${CC-cc} -c ctest.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
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397 if ${CC-cc} -o ctest ctest.o ftest.o $FLIBS -lm 1>&AC_FD_CC 2>&AC_FD_CC; then |
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398 ctest_output=`./ctest 2>&1` |
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399 status=$? |
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400 if test $status -eq 0 && test "$ctest_output" = "FOO-I-HITHERE 10"; then |
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401 octave_cv_f2c_f77_compat=yes |
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402 fi |
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403 fi |
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404 fi]) |
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405 rm -f ftest* ctest* core |
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406 AC_MSG_RESULT([$octave_cv_f2c_f77_compat])]) |
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407 dnl |
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408 dnl See if struct group has a gr_passwd field. |
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409 dnl |
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410 AC_DEFUN(OCTAVE_STRUCT_GR_PASSWD, |
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411 [AC_CACHE_CHECK([for gr_passwd in struct group], octave_cv_struct_gr_passwd, |
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412 [AC_TRY_COMPILE([#include <sys/types.h> |
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413 #include <grp.h>], [struct group s; s.gr_passwd;], |
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414 octave_cv_struct_gr_passwd=yes, octave_cv_struct_gr_passwd=no)]) |
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415 if test $octave_cv_struct_gr_passwd = yes; then |
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416 AC_DEFINE(HAVE_GR_PASSWD) |
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417 fi |
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418 ]) |
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419 dnl |
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2574
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420 dnl See if the standard string class has npos as a member. |
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421 dnl |
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422 AC_DEFUN(OCTAVE_STRING_NPOS, |
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423 [AC_CACHE_CHECK([whether including <string> defines NPOS], |
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424 octave_cv_string_npos, |
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425 [AC_LANG_SAVE |
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426 AC_LANG_CPLUSPLUS |
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427 AC_TRY_COMPILE([#include <string>], |
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428 [size_t foo = NPOS], |
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429 octave_cv_string_npos=yes, octave_cv_string_npos=no)]) |
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430 if test $octave_cv_string_npos = no; then |
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431 AC_DEFINE(NPOS, string::npos) |
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432 fi |
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433 AC_LANG_RESTORE |
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434 ]) |
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435 dnl |
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436 dnl The following test is from Karl Berry's Kpathseach library. I'm |
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437 dnl including it here in case we someday want to make the use of |
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438 dnl kpathsea optional. |
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439 dnl |
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440 dnl Some BSD putenv's, e.g., FreeBSD, do malloc/free's on the environment. |
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441 dnl This test program is due to Mike Hibler <mike@cs.utah.edu>. |
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442 dnl We don't actually need to run this if we don't have putenv, but it |
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443 dnl doesn't hurt. |
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444 AC_DEFUN(OCTAVE_SMART_PUTENV, |
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445 [AC_MSG_CHECKING(whether putenv uses malloc) |
|
1707
|
446 AC_CACHE_VAL(octave_cv_func_putenv_malloc, |
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447 [AC_TRY_RUN([ |
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448 #define VAR "YOW_VAR" |
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449 #define STRING1 "GabbaGabbaHey" |
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450 #define STRING2 "Yow!!" /* should be shorter than STRING1 */ |
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451 extern char *getenv (); /* in case char* and int don't mix gracefully */ |
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452 main () |
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453 { |
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454 char *str1, *rstr1, *str2, *rstr2; |
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455 str1 = getenv (VAR); |
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456 if (str1) |
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457 exit (1); |
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458 str1 = malloc (strlen (VAR) + 1 + strlen (STRING1) + 1); |
|
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459 if (str1 == 0) |
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460 exit (2); |
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461 strcpy (str1, VAR); |
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462 strcat (str1, "="); |
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463 strcat (str1, STRING1); |
|
|
464 if (putenv (str1) < 0) |
|
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465 exit (3); |
|
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466 rstr1 = getenv (VAR); |
|
|
467 if (rstr1 == 0) |
|
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468 exit (4); |
|
|
469 rstr1 -= strlen (VAR) + 1; |
|
|
470 if (strncmp (rstr1, VAR, strlen (VAR))) |
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471 exit (5); |
|
|
472 str2 = malloc (strlen (VAR) + 1 + strlen (STRING2) + 1); |
|
|
473 if (str2 == 0 || str1 == str2) |
|
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474 exit (6); |
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475 strcpy (str2, VAR); |
|
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476 strcat (str2, "="); |
|
|
477 strcat (str2, STRING2); |
|
|
478 if (putenv (str2) < 0) |
|
|
479 exit (7); |
|
|
480 rstr2 = getenv (VAR); |
|
|
481 if (rstr2 == 0) |
|
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482 exit (8); |
|
|
483 rstr2 -= strlen (VAR) + 1; |
|
|
484 #if 0 |
|
|
485 printf ("rstr1=0x%x, rstr2=0x%x\n", rstr1, rstr2); |
|
|
486 /* |
|
|
487 * If string from first call was reused for the second call, |
|
|
488 * you had better not do a free on the first string! |
|
|
489 */ |
|
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490 if (rstr1 == rstr2) |
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491 printf ("#define SMART_PUTENV\n"); |
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492 else |
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493 printf ("#undef SMART_PUTENV\n"); |
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494 #endif |
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495 exit (rstr1 == rstr2 ? 0 : 1); |
|
|
496 }], octave_cv_func_putenv_malloc=yes, octave_cv_func_putenv_malloc=no, |
|
|
497 octave_cv_func_putenv_malloc=no)])dnl |
|
|
498 AC_MSG_RESULT($octave_cv_func_putenv_malloc) |
|
|
499 if test $octave_cv_func_putenv_malloc = yes; then |
|
|
500 AC_DEFINE(SMART_PUTENV) |
|
1708
|
501 fi]) |
|
1788
|
502 dnl |
|
|
503 dnl This is a GNU libc invention, and this check is also from Karl |
|
|
504 dnl Berry's kpathsea library. |
|
|
505 dnl |
|
|
506 AC_DEFUN(OCTAVE_PROGRAM_INVOCATION_NAME, |
|
|
507 [AC_MSG_CHECKING(whether program_invocation_name is predefined) |
|
|
508 AC_CACHE_VAL(octave_cv_var_program_inv_name, |
|
|
509 [AC_TRY_LINK(, [main() { program_invocation_name = "love"; }], |
|
|
510 octave_cv_var_program_inv_name=yes, octave_cv_var_program_inv_name=no)])dnl |
|
|
511 AC_MSG_RESULT($octave_cv_var_program_inv_name) |
|
|
512 if test $octave_cv_var_program_inv_name = yes; then |
|
|
513 AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME) |
|
|
514 fi]) |
|
2469
|
515 dnl |
|
|
516 dnl These two checks for signal functions were originally part of the |
|
|
517 dnl aclocal.m4 file distributed with bash 2.0. |
|
|
518 dnl |
|
|
519 dnl Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7) |
|
|
520 AC_DEFUN(OCTAVE_SIGNAL_CHECK, |
|
|
521 [AC_REQUIRE([AC_TYPE_SIGNAL]) |
|
|
522 AC_MSG_CHECKING(for type of signal functions) |
|
|
523 AC_CACHE_VAL(octave_cv_signal_vintage, |
|
|
524 [ |
|
|
525 AC_TRY_LINK([#include <signal.h>],[ |
|
|
526 sigset_t ss; |
|
|
527 struct sigaction sa; |
|
|
528 sigemptyset(&ss); sigsuspend(&ss); |
|
|
529 sigaction(SIGINT, &sa, (struct sigaction *) 0); |
|
|
530 sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0); |
|
|
531 ], octave_cv_signal_vintage=posix, |
|
|
532 [ |
|
|
533 AC_TRY_LINK([#include <signal.h>], [ |
|
|
534 int mask = sigmask(SIGINT); |
|
|
535 sigsetmask(mask); sigblock(mask); sigpause(mask); |
|
|
536 ], octave_cv_signal_vintage=4.2bsd, |
|
|
537 [ |
|
|
538 AC_TRY_LINK([ |
|
|
539 #include <signal.h> |
|
|
540 RETSIGTYPE foo() { }], [ |
|
|
541 int mask = sigmask(SIGINT); |
|
|
542 sigset(SIGINT, foo); sigrelse(SIGINT); |
|
|
543 sighold(SIGINT); sigpause(SIGINT); |
|
2491
|
544 ], octave_cv_signal_vintage=svr3, octave_cv_signal_vintage=v7 |
|
2469
|
545 )] |
|
|
546 )] |
|
|
547 ) |
|
|
548 ]) |
|
|
549 AC_MSG_RESULT($octave_cv_signal_vintage) |
|
2491
|
550 if test "$octave_cv_signal_vintage" = posix; then |
|
2469
|
551 AC_DEFINE(HAVE_POSIX_SIGNALS) |
|
2491
|
552 elif test "$octave_cv_signal_vintage" = "4.2bsd"; then |
|
2469
|
553 AC_DEFINE(HAVE_BSD_SIGNALS) |
|
2491
|
554 elif test "$octave_cv_signal_vintage" = svr3; then |
|
2469
|
555 AC_DEFINE(HAVE_USG_SIGHOLD) |
|
|
556 fi |
|
|
557 ]) |
|
|
558 dnl |
|
|
559 AC_DEFUN(OCTAVE_REINSTALL_SIGHANDLERS, |
|
|
560 [AC_REQUIRE([AC_TYPE_SIGNAL]) |
|
|
561 AC_REQUIRE([OCTAVE_SIGNAL_CHECK]) |
|
|
562 AC_MSG_CHECKING([if signal handlers must be reinstalled when invoked]) |
|
|
563 AC_CACHE_VAL(octave_cv_must_reinstall_sighandlers, |
|
|
564 [AC_TRY_RUN([ |
|
|
565 #include <signal.h> |
|
|
566 #ifdef HAVE_UNISTD_H |
|
|
567 #include <unistd.h> |
|
|
568 #endif |
|
|
569 typedef RETSIGTYPE sigfunc(); |
|
|
570 int nsigint; |
|
|
571 #ifdef HAVE_POSIX_SIGNALS |
|
|
572 sigfunc * |
|
|
573 set_signal_handler(sig, handler) |
|
|
574 int sig; |
|
|
575 sigfunc *handler; |
|
|
576 { |
|
|
577 struct sigaction act, oact; |
|
|
578 act.sa_handler = handler; |
|
|
579 act.sa_flags = 0; |
|
|
580 sigemptyset (&act.sa_mask); |
|
|
581 sigemptyset (&oact.sa_mask); |
|
|
582 sigaction (sig, &act, &oact); |
|
|
583 return (oact.sa_handler); |
|
|
584 } |
|
|
585 #else |
|
|
586 #define set_signal_handler(s, h) signal(s, h) |
|
|
587 #endif |
|
|
588 RETSIGTYPE |
|
|
589 sigint(s) |
|
|
590 int s; |
|
|
591 { |
|
|
592 nsigint++; |
|
|
593 } |
|
|
594 main() |
|
|
595 { |
|
|
596 nsigint = 0; |
|
|
597 set_signal_handler(SIGINT, sigint); |
|
|
598 kill((int)getpid(), SIGINT); |
|
|
599 kill((int)getpid(), SIGINT); |
|
|
600 exit(nsigint != 2); |
|
|
601 } |
|
|
602 ], octave_cv_must_reinstall_sighandlers=no, octave_cv_must_reinstall_sighandlers=yes, |
|
|
603 AC_MSG_ERROR(cannot check signal handling if cross compiling))]) |
|
|
604 AC_MSG_RESULT($octave_cv_must_reinstall_sighandlers) |
|
2491
|
605 if test "$octave_cv_must_reinstall_sighandlers" = yes; then |
|
2469
|
606 AC_DEFINE(MUST_REINSTALL_SIGHANDLERS) |
|
|
607 fi |
|
|
608 ]) |
|
2626
|
609 dnl |
|
|
610 dnl This check originally from bash 2.0. |
|
|
611 dnl |
|
|
612 dnl Check for typedef'd symbols in header files, but allow the caller to |
|
|
613 dnl specify the include files to be checked in addition to the default. |
|
|
614 dnl |
|
|
615 dnl OCTAVE_CHECK_TYPE(TYPE, HEADERS, DEFAULT[, VALUE-IF-FOUND]) |
|
|
616 AC_DEFUN(OCTAVE_CHECK_TYPE, |
|
|
617 [AC_REQUIRE([AC_HEADER_STDC])dnl |
|
|
618 AC_MSG_CHECKING(for $1) |
|
|
619 AC_CACHE_VAL(octave_cv_type_$1, |
|
|
620 [AC_EGREP_CPP($1, [#include <sys/types.h> |
|
|
621 #if STDC_HEADERS |
|
|
622 #include <stdlib.h> |
|
|
623 #endif |
|
|
624 $2 |
|
|
625 ], octave_cv_type_$1=yes, octave_cv_type_$1=no)]) |
|
|
626 AC_MSG_RESULT($octave_cv_type_$1) |
|
|
627 ifelse($#, 4, [if test $octave_cv_type_$1 = yes; then |
|
|
628 AC_DEFINE($4) |
|
|
629 fi]) |
|
|
630 if test $octave_cv_type_$1 = no; then |
|
|
631 AC_DEFINE($1, $3) |
|
|
632 fi |
|
|
633 ]) |
