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${ac_cv_header_readline_history_h}" != "xyes"; then
  48         GINAC_WARNING([readline headers could not be found.])
  49 else
  50         AC_CACHE_CHECK([for version of libreadline], [ginac_cv_rl_supported], [
  51                 ginac_cv_rl_supported="no"
  52                 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  53                         #include <stdio.h>
  54                         #include <readline/readline.h>
  55                         #if !defined(RL_VERSION_MAJOR) || !defined(RL_VERSION_MINOR)
  56                         #error "Ancient/unsupported version of readline"
  57                         #endif]])],
  58                         [ginac_cv_rl_supported="yes"])])
  59         if test "x${ginac_cv_rl_supported}" != "xyes"; then
  60                 GINAC_WARNING([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([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 "**** The following problems have been detected by configure."
 125     echo "**** Please check the messages below before running \"make\"."
 126     echo "**** (see the section 'Common Problems' in the INSTALL file)"
 127     echo "$ginac_error_txt"
 128     if test "x${ginac_warning_txt}" != "x"; then
 129         echo "${ginac_warning_txt}"
 130     fi
 131     if test "x$cache_file" != "x/dev/null"; then
 132         echo "deleting cache ${cache_file}"
 133         rm -f $cache_file
 134     fi
 135     exit 1
 136 else
 137     if test "x${ginac_warning}" = "xyes"; then
 138         echo "=== The following minor problems have been detected by configure."
 139         echo "=== Please check the messages below before running \"make\"."
 140         echo "=== (see the section 'Common Problems' in the INSTALL file)"
 141         echo "$ginac_warning_txt"
 142     fi
 143     echo "Configuration of GiNaC $VERSION done. Now type \"make\"."
 144 fi])
 145
 146 AC_DEFUN([GINAC_HAVE_RUSAGE],
 147 [AC_CACHE_CHECK([whether struct rusage is declared in <sys/resource.h>],
 148 ac_cv_have_rusage,
 149  [AC_TRY_COMPILE([#include <sys/times.h>
 150                   #include <sys/resource.h>],
 151                   [struct rusage resUsage;
 152                    getrusage(RUSAGE_SELF, &resUsage);
 153                    return 0;],
 154                  [ac_cv_have_rusage=yes],
 155                  [ac_cv_have_rusage=no])
 156 ])
 157 CONFIG_RUSAGE="no"
 158 if test "$ac_cv_have_rusage" = yes; then
 159   CONFIG_RUSAGE="yes"
 160   AC_DEFINE(HAVE_RUSAGE,,[define if struct rusage declared in <sys/resource.h>])
 161 fi
 162 AC_SUBST(CONFIG_RUSAGE)
 163 ])
 164
 165 dnl Usage: GINAC_EXCOMPILER
 166 dnl - Checks if dlopen is available
 167 dnl - Allows user to disable GiNaC::compile_ex (e.g. for security reasons)
 168 dnl Defines HAVE_LIBDL preprocessor macro, sets DL_LIBS and CONFIG_EXCOMPILER
 169 dnl variables.
 170 AC_DEFUN([GINAC_EXCOMPILER], [
 171 CONFIG_EXCOMPILER=yes
 172 DL_LIBS=""
 173
 174 AC_ARG_ENABLE([excompiler],
 175         [AS_HELP_STRING([--enable-excompiler], [Enable GiNaC::compile_ex (default: yes)])],
 176         [if test "$enableval" = "no"; then
 177                 CONFIG_EXCOMPILER="no"
 178         fi],
 179         [CONFIG_EXCOMPILER="yes"])
 180
 181 case $host_os in
 182         *mingw32*)
 183         CONFIG_EXCOMPILER="notsupported"
 184         ;;
 185         *)
 186         ;;
 187 esac
 188
 189 if test "$CONFIG_EXCOMPILER" = "yes"; then
 190         AC_CHECK_LIB(dl, dlopen, [
 191                 DL_LIBS="-ldl"
 192                 AC_DEFINE(HAVE_LIBDL, 1, [set to 1 if you have a working libdl installed.])],
 193
 194                 [AC_MSG_WARN([libdl not found. GiNaC::compile_ex will be disabled.])
 195                  CONFIG_EXCOMPILER="no"])
 196 elif test "$CONFIG_EXCOMPILER" = "no"; then
 197         AC_MSG_RESULT([INFO: GiNaC::compile_ex disabled at user request.])
 198 else
 199         AC_MSG_RESULT([INFO: GiNaC::compile_ex is not supported on $host_os.])
 200 fi
 201 AC_SUBST(DL_LIBS)
 202 AC_SUBST(CONFIG_EXCOMPILER)])
 203