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