acinclude.m4

   1 dnl ===========================================================================
   2 dnl Additional macros used to configure GiNaC.  We don't start our own
   3 dnl additions' names with AC_ but with GINAC_ in order to steer clear of
   4 dnl future trouble.
   5 dnl ===========================================================================
   6
   7 dnl Usage: GINAC_STD_CXX_HEADERS
   8 dnl Check for standard C++ headers, bail out if something is missing.
   9 AC_DEFUN([GINAC_STD_CXX_HEADERS], [
  10 AC_CACHE_CHECK([for standard C++ header files], [ginac_cv_std_cxx_headers], [
  11         ginac_cv_std_cxx_headers="no"
  12         AC_LANG_PUSH([C++])
  13         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  14                 #include <iosfwd>
  15                 #include <iostream>
  16                 #include <vector>
  17                 #include <list>
  18                 #include <map>
  19                 #include <set>
  20                 #include <string>
  21                 #include <sstream>
  22                 #include <typeinfo>
  23                 #include <stdexcept>
  24                 #include <algorithm>
  25                 #include <limits>
  26                 #include <ctime>
  27                 ]])], [ginac_cv_std_cxx_headers="yes"])
  28         AC_LANG_POP([C++])])
  29 if test "${ginac_cv_std_cxx_headers}" != "yes"; then
  30         AC_MSG_ERROR([Standard ISO C++ 98 headers are missing])
  31 fi
  32 ])
  33
  34 dnl Usage: GINAC_LIBREADLINE
  35 dnl
  36 dnl Check if GNU readline library and headers are avialable.
  37 dnl Defines GINSH_LIBS variable, and HAVE_LIBREADLINE,
  38 dnl HAVE_READLINE_READLINE_H, HAVE_READLINE_HISTORY_H preprocessor macros.
  39 dnl
  40 dnl Note: this macro rejects readline versions <= 4.2 and non-GNU
  41 dnl implementations.
  42 dnl
  43 AC_DEFUN([GINAC_READLINE],[
  44 AC_REQUIRE([GINAC_TERMCAP])
  45 GINSH_LIBS=""
  46 AC_CHECK_HEADERS(readline/readline.h readline/history.h)
  47 if test "x${ac_cv_header_readline_readline_h}" != "xyes" -o "x${ac_cv_header_readline_history_h}" != "xyes"; then
  48         GINAC_WARNING([ginsh will not compile, because readline headers could not be found.])
  49 else
  50         AC_CACHE_CHECK([for version of libreadline], [ginac_cv_rl_supported], [
  51                 ginac_cv_rl_supported="no"
  52                 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  53                         #include <stdio.h>
  54                         #include <readline/readline.h>
  55                         #if !defined(RL_VERSION_MAJOR) || !defined(RL_VERSION_MINOR)
  56                         #error "Ancient/unsupported version of readline"
  57                         #endif]])],
  58                         [ginac_cv_rl_supported="yes"])])
  59         if test "x${ginac_cv_rl_supported}" != "xyes"; then
  60                 GINAC_WARNING([ginsh will not compile, because of an unsupported version of readline (<= 4.2 or non-GNU).])
  61         else
  62                 save_LIBS="$LIBS"
  63                 LIBS="$LIBTERMCAP $LIBS"
  64                 AC_CHECK_LIB(readline, readline)
  65                 if test "x${ac_cv_lib_readline_readline}" != "xyes"; then
  66                         GINAC_WARNING([ginsh will not compile, because libreadline could not be found.])
  67                 fi
  68                 GINSH_LIBS="$LIBS"
  69                 LIBS="$save_LIBS"
  70         fi
  71 fi
  72 AC_SUBST(GINSH_LIBS)])
  73
  74 dnl Usage: GINAC_TERMCAP
  75 dnl libreadline is based on the termcap functions.
  76 dnl Some systems have tgetent(), tgetnum(), tgetstr(), tgetflag(), tputs(),
  77 dnl tgoto() in libc, some have it in libtermcap, some have it in libncurses.
  78 dnl When both libtermcap and libncurses exist, we prefer the latter, because
  79 dnl libtermcap is being phased out.
  80 AC_DEFUN([GINAC_TERMCAP],
  81 [LIBTERMCAP=
  82 case $host_os in
  83 *mingw32*)
  84  ;; dnl no termcap libraries are necessary (need hacked libreadline)
  85 *)
  86 AC_CHECK_FUNCS(tgetent)
  87 if test "x$ac_cv_func_tgetent" = "xyes"; then
  88     :
  89 else
  90     AC_CHECK_LIB(ncurses, tgetent, LIBTERMCAP="-lncurses")
  91     if test -z "$LIBTERMCAP"; then
  92         AC_CHECK_LIB(termcap, tgetent, LIBTERMCAP="-ltermcap")
  93     fi
  94 fi
  95 ;;
  96 esac
  97 AC_SUBST(LIBTERMCAP)
  98 ])
  99
 100 dnl Usage: GINAC_ERROR(message)
 101 dnl This macro displays the warning "message" and sets the flag ginac_error
 102 dnl to yes.
 103 AC_DEFUN([GINAC_ERROR],[
 104 ginac_error_txt="$ginac_error_txt
 105 ** $1
 106 "
 107 ginac_error=yes])
 108
 109 dnl Usage: GINAC_WARNING(message)
 110 dnl This macro displays the warning "message" and sets the flag ginac_warning
 111 dnl to yes.
 112 AC_DEFUN([GINAC_WARNING],[
 113 ginac_warning_txt="$ginac_warning_txt
 114 == $1
 115 "
 116 ginac_warning=yes])
 117
 118 dnl Usage: GINAC_CHECK_ERRORS
 119 dnl (must be put at end of configure.in, because it exits on error)
 120 dnl This macro displays a warning message if GINAC_ERROR or GINAC_WARNING
 121 dnl has occured previously.
 122 AC_DEFUN([GINAC_CHECK_ERRORS],[
 123 if test "x${ginac_error}" = "xyes"; then
 124         echo
 125     echo "**** The following problems have been detected by configure."
 126     echo "**** Please check the messages below before running \"make\"."
 127     echo "**** (see the section 'Common Problems' in the INSTALL file)"
 128     echo "$ginac_error_txt"
 129     if test "x${ginac_warning_txt}" != "x"; then
 130         echo "${ginac_warning_txt}"
 131     fi
 132     if test "x$cache_file" != "x/dev/null"; then
 133         echo "deleting cache ${cache_file}"
 134         rm -f $cache_file
 135     fi
 136     exit 1
 137 else
 138     if test "x${ginac_warning}" = "xyes"; then
 139                 echo
 140         echo "=== The following minor problems have been detected by configure."
 141         echo "=== Please check the messages below before running \"make\"."
 142         echo "=== (see the section 'Common Problems' in the INSTALL file)"
 143         echo "$ginac_warning_txt"
 144     fi
 145     echo "Configuration of GiNaC $VERSION done. Now type \"make\"."
 146 fi])
 147
 148 AC_DEFUN([GINAC_HAVE_RUSAGE],
 149 [AC_CACHE_CHECK([whether struct rusage is declared in <sys/resource.h>],
 150 ac_cv_have_rusage,
 151  [AC_TRY_COMPILE([#include <sys/times.h>
 152                   #include <sys/resource.h>],
 153                   [struct rusage resUsage;
 154                    getrusage(RUSAGE_SELF, &resUsage);
 155                    return 0;],
 156                  [ac_cv_have_rusage=yes],
 157                  [ac_cv_have_rusage=no])
 158 ])
 159 CONFIG_RUSAGE="no"
 160 if test "$ac_cv_have_rusage" = yes; then
 161   CONFIG_RUSAGE="yes"
 162   AC_DEFINE(HAVE_RUSAGE,,[define if struct rusage declared in <sys/resource.h>])
 163 fi
 164 AC_SUBST(CONFIG_RUSAGE)
 165 ])
 166
 167 dnl Usage: GINAC_EXCOMPILER
 168 dnl - Checks if dlopen is available
 169 dnl - Allows user to disable GiNaC::compile_ex (e.g. for security reasons)
 170 dnl Defines HAVE_LIBDL preprocessor macro, sets DL_LIBS and CONFIG_EXCOMPILER
 171 dnl variables.
 172 AC_DEFUN([GINAC_EXCOMPILER], [
 173 CONFIG_EXCOMPILER=yes
 174 DL_LIBS=""
 175
 176 AC_ARG_ENABLE([excompiler],
 177         [AS_HELP_STRING([--enable-excompiler], [Enable GiNaC::compile_ex (default: yes)])],
 178         [if test "$enableval" = "no"; then
 179                 CONFIG_EXCOMPILER="no"
 180         fi],
 181         [CONFIG_EXCOMPILER="yes"])
 182
 183 case $host_os in
 184         *mingw32*)
 185         CONFIG_EXCOMPILER="notsupported"
 186         ;;
 187         *)
 188         ;;
 189 esac
 190
 191 if test "$CONFIG_EXCOMPILER" = "yes"; then
 192         AC_CHECK_HEADER([dlfcn.h], [CONFIG_EXCOMPILER="yes"], [CONFIG_EXCOMPILER="no"])
 193 elif test "$CONFIG_EXCOMPILER" = "no"; then
 194         AC_MSG_NOTICE([GiNaC::compile_ex disabled at user request.])
 195 else
 196         AC_MSG_NOTICE([GiNaC::compile_ex is not supported on $host_os.])
 197 fi
 198
 199 if test "$CONFIG_EXCOMPILER" = "yes"; then
 200         dnl Some systems (GNU/Linux, Solaris) have dlopen in -ldl, some
 201         dnl others (OpenBSD) -- in libc
 202         found_dlopen_lib="no"
 203         DL_LIBS="-ldl"
 204         AC_CHECK_LIB(dl, dlopen, [found_dlopen_lib="yes"])
 205         if test "$found_dlopen_lib" = "no"; then
 206                 DL_LIBS=""
 207                 AC_CHECK_FUNC(dlopen, [found_dlopen_lib="yes"])
 208         fi
 209         if test "$found_dlopen_lib" = "no"; then
 210                 CONFIG_EXCOMPILER="no"
 211                 AC_MSG_WARN([Could not found working dlopen(). GiNaC::compile_ex will be disabled.])
 212         else
 213                 AC_DEFINE(HAVE_LIBDL, 1, [set to 1 if dlopen() works.])
 214         fi
 215 fi
 216 AC_SUBST(DL_LIBS)
 217 AC_SUBST(CONFIG_EXCOMPILER)])
 218