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  GINAC_HEADER_GETVAL(NAME,FILE)
   8 dnl  ----------------------------
   9 dnl  Expand at autoconf time to the value of a "#define NAME" from the given
  10 dnl  FILE. The regexps here aren't very rugged, but are enough for us.
  11 dnl  /dev/null as a parameter prevents a hang if $2 is accidentally omitted.
  12 dnl  (shamelessly ripped from GMP, and changed prefix to GINAC_).
  13
  14 define(GINAC_HEADER_GETVAL,
  15 [patsubst(patsubst(
  16 esyscmd([grep "^#define $1 " $2 /dev/null 2>/dev/null]),
  17 [^.*$1[         ]+],[]),
  18 [[
  19         ]*$],[])])
  20 define(GINAC_GET_VERSION,
  21 [GINAC_HEADER_GETVAL(GINACLIB_$1_VERSION,[ginac/version.h])])
  22 define(GINAC_GET_LTVERSION,
  23 [GINAC_HEADER_GETVAL(GINAC_LT_$1,[ginac/version.h])])
  24
  25 dnl Usage: GINAC_STD_CXX_HEADERS
  26 dnl Check for standard C++ headers, bail out if something is missing.
  27 AC_DEFUN([GINAC_STD_CXX_HEADERS], [
  28 AC_CACHE_CHECK([for standard C++ header files], [ginac_cv_std_cxx_headers], [
  29         ginac_cv_std_cxx_headers="no"
  30         AC_LANG_PUSH([C++])
  31         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  32                 #include <iosfwd>
  33                 #include <iostream>
  34                 #include <vector>
  35                 #include <list>
  36                 #include <map>
  37                 #include <set>
  38                 #include <string>
  39                 #include <sstream>
  40                 #include <typeinfo>
  41                 #include <stdexcept>
  42                 #include <algorithm>
  43                 #include <limits>
  44                 #include <ctime>
  45                 ]])], [ginac_cv_std_cxx_headers="yes"])
  46         AC_LANG_POP([C++])])
  47 if test "${ginac_cv_std_cxx_headers}" != "yes"; then
  48         AC_MSG_ERROR([Standard ISO C++ 98 headers are missing])
  49 fi
  50 ])
  51
  52 dnl Usage: GINAC_LIBREADLINE
  53 dnl
  54 dnl Check if GNU readline library and headers are avialable.
  55 dnl Defines GINSH_LIBS variable, and HAVE_LIBREADLINE,
  56 dnl HAVE_READLINE_READLINE_H, HAVE_READLINE_HISTORY_H preprocessor macros.
  57 dnl
  58 dnl Note: this macro rejects readline versions <= 4.2 and non-GNU
  59 dnl implementations.
  60 dnl
  61 AC_DEFUN([GINAC_READLINE],[
  62 AC_REQUIRE([GINAC_TERMCAP])
  63 GINSH_LIBS=""
  64 AC_CHECK_HEADERS(readline/readline.h readline/history.h)
  65 if test "x${ac_cv_header_readline_readline_h}" != "xyes" -o "x${ac_cv_header_readline_history_h}" != "xyes"; then
  66         GINAC_WARNING([ginsh will not compile, because readline headers could not be found.])
  67 else
  68         AC_CACHE_CHECK([for version of libreadline], [ginac_cv_rl_supported], [
  69                 ginac_cv_rl_supported="no"
  70                 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  71                         #include <stdio.h>
  72                         #include <readline/readline.h>
  73                         #if !defined(RL_VERSION_MAJOR) || !defined(RL_VERSION_MINOR)
  74                         #error "Ancient/unsupported version of readline"
  75                         #endif]])],
  76                         [ginac_cv_rl_supported="yes"])])
  77         if test "x${ginac_cv_rl_supported}" != "xyes"; then
  78                 GINAC_WARNING([ginsh will not compile, because of an unsupported version of readline (<= 4.2 or non-GNU).])
  79         else
  80                 save_LIBS="$LIBS"
  81                 LIBS="$LIBTERMCAP $LIBS"
  82                 AC_CHECK_LIB(readline, readline)
  83                 if test "x${ac_cv_lib_readline_readline}" != "xyes"; then
  84                         GINAC_WARNING([ginsh will not compile, because libreadline could not be found.])
  85                 fi
  86                 GINSH_LIBS="$LIBS"
  87                 LIBS="$save_LIBS"
  88         fi
  89 fi
  90 AC_SUBST(GINSH_LIBS)])
  91
  92 dnl Usage: GINAC_TERMCAP
  93 dnl libreadline is based on the termcap functions.
  94 dnl Some systems have tgetent(), tgetnum(), tgetstr(), tgetflag(), tputs(),
  95 dnl tgoto() in libc, some have it in libtermcap, some have it in libncurses.
  96 dnl When both libtermcap and libncurses exist, we prefer the latter, because
  97 dnl libtermcap is being phased out.
  98 AC_DEFUN([GINAC_TERMCAP],
  99 [LIBTERMCAP=
 100 case $host_os in
 101 *mingw32*)
 102  ;; dnl no termcap libraries are necessary (need hacked libreadline)
 103 *)
 104 AC_CHECK_FUNCS(tgetent)
 105 if test "x$ac_cv_func_tgetent" = "xyes"; then
 106     :
 107 else
 108     AC_CHECK_LIB(ncurses, tgetent, LIBTERMCAP="-lncurses")
 109     if test -z "$LIBTERMCAP"; then
 110         AC_CHECK_LIB(termcap, tgetent, LIBTERMCAP="-ltermcap")
 111     fi
 112 fi
 113 ;;
 114 esac
 115 AC_SUBST(LIBTERMCAP)
 116 ])
 117
 118 dnl Usage: GINAC_ERROR(message)
 119 dnl This macro displays the warning "message" and sets the flag ginac_error
 120 dnl to yes.
 121 AC_DEFUN([GINAC_ERROR],[
 122 ginac_error_txt="$ginac_error_txt
 123 ** $1
 124 "
 125 ginac_error=yes])
 126
 127 dnl Usage: GINAC_WARNING(message)
 128 dnl This macro displays the warning "message" and sets the flag ginac_warning
 129 dnl to yes.
 130 AC_DEFUN([GINAC_WARNING],[
 131 ginac_warning_txt="$ginac_warning_txt
 132 == $1
 133 "
 134 ginac_warning=yes])
 135
 136 dnl Usage: GINAC_CHECK_ERRORS
 137 dnl (must be put at end of configure.in, because it exits on error)
 138 dnl This macro displays a warning message if GINAC_ERROR or GINAC_WARNING
 139 dnl has occured previously.
 140 AC_DEFUN([GINAC_CHECK_ERRORS],[
 141 if test "x${ginac_error}" = "xyes"; then
 142         echo
 143     echo "**** The following problems have been detected by configure."
 144     echo "**** Please check the messages below before running \"make\"."
 145     echo "**** (see the section 'Common Problems' in the INSTALL file)"
 146     echo "$ginac_error_txt"
 147     if test "x${ginac_warning_txt}" != "x"; then
 148         echo "${ginac_warning_txt}"
 149     fi
 150     if test "x$cache_file" != "x/dev/null"; then
 151         echo "deleting cache ${cache_file}"
 152         rm -f $cache_file
 153     fi
 154     exit 1
 155 else
 156     if test "x${ginac_warning}" = "xyes"; then
 157                 echo
 158         echo "=== The following minor problems have been detected by configure."
 159         echo "=== Please check the messages below before running \"make\"."
 160         echo "=== (see the section 'Common Problems' in the INSTALL file)"
 161         echo "$ginac_warning_txt"
 162     fi
 163     echo "Configuration of GiNaC $VERSION done. Now type \"make\"."
 164 fi])
 165
 166 AC_DEFUN([GINAC_HAVE_RUSAGE],
 167 [AC_CACHE_CHECK([whether struct rusage is declared in <sys/resource.h>],
 168 ac_cv_have_rusage,
 169  [AC_TRY_COMPILE([#include <sys/times.h>
 170                   #include <sys/resource.h>],
 171                   [struct rusage resUsage;
 172                    getrusage(RUSAGE_SELF, &resUsage);
 173                    return 0;],
 174                  [ac_cv_have_rusage=yes],
 175                  [ac_cv_have_rusage=no])
 176 ])
 177 CONFIG_RUSAGE="no"
 178 if test "$ac_cv_have_rusage" = yes; then
 179   CONFIG_RUSAGE="yes"
 180   AC_DEFINE(HAVE_RUSAGE,,[define if struct rusage declared in <sys/resource.h>])
 181 fi
 182 AC_SUBST(CONFIG_RUSAGE)
 183 ])
 184
 185 dnl Usage: GINAC_EXCOMPILER
 186 dnl - Checks if dlopen is available
 187 dnl - Allows user to disable GiNaC::compile_ex (e.g. for security reasons)
 188 dnl Defines HAVE_LIBDL preprocessor macro, sets DL_LIBS and CONFIG_EXCOMPILER
 189 dnl variables.
 190 AC_DEFUN([GINAC_EXCOMPILER], [
 191 CONFIG_EXCOMPILER=yes
 192 DL_LIBS=""
 193
 194 AC_ARG_ENABLE([excompiler],
 195         [AS_HELP_STRING([--enable-excompiler], [Enable GiNaC::compile_ex (default: yes)])],
 196         [if test "$enableval" = "no"; then
 197                 CONFIG_EXCOMPILER="no"
 198         fi],
 199         [CONFIG_EXCOMPILER="yes"])
 200
 201 case $host_os in
 202         *mingw32*)
 203         CONFIG_EXCOMPILER="notsupported"
 204         ;;
 205         *)
 206         ;;
 207 esac
 208
 209 if test "$CONFIG_EXCOMPILER" = "yes"; then
 210         AC_CHECK_HEADER([dlfcn.h], [CONFIG_EXCOMPILER="yes"], [CONFIG_EXCOMPILER="no"])
 211 elif test "$CONFIG_EXCOMPILER" = "no"; then
 212         AC_MSG_NOTICE([GiNaC::compile_ex disabled at user request.])
 213 else
 214         AC_MSG_NOTICE([GiNaC::compile_ex is not supported on $host_os.])
 215 fi
 216
 217 if test "$CONFIG_EXCOMPILER" = "yes"; then
 218         dnl Some systems (GNU/Linux, Solaris) have dlopen in -ldl, some
 219         dnl others (OpenBSD) -- in libc
 220         found_dlopen_lib="no"
 221         DL_LIBS="-ldl"
 222         AC_CHECK_LIB(dl, dlopen, [found_dlopen_lib="yes"])
 223         if test "$found_dlopen_lib" = "no"; then
 224                 DL_LIBS=""
 225                 AC_CHECK_FUNC(dlopen, [found_dlopen_lib="yes"])
 226         fi
 227         if test "$found_dlopen_lib" = "no"; then
 228                 CONFIG_EXCOMPILER="no"
 229                 AC_MSG_WARN([Could not found working dlopen(). GiNaC::compile_ex will be disabled.])
 230         else
 231                 AC_DEFINE(HAVE_LIBDL, 1, [set to 1 if dlopen() works.])
 232         fi
 233 fi
 234 AC_SUBST(DL_LIBS)
 235 AC_SUBST(CONFIG_EXCOMPILER)])
 236