broke long line in error message

[pspp-builds.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index aa6e4d77b3ea756eb24deb1d675b2de20a3b7964..4201e22b58c67012d73ece9280e538e35a8b79bb 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -3,89 +3,105 @@ dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 

-dnl Check longest integer in digits.
+dnl Prerequisites.

 
 

-AC_DEFUN([BLP_INT_DIGITS],
+dnl Instead of giving an error about each prerequisite as we encounter it, 
+dnl group them all together at the end of the run, to be user-friendly.
+AC_DEFUN([PSPP_REQUIRED_PREREQ], [pspp_required_prereqs="$pspp_required_prereqs
+       $1"])
+AC_DEFUN([PSPP_OPTIONAL_PREREQ], [pspp_optional_prereqs="$pspp_optional_prereqs
+       $1"])
+AC_DEFUN([PSPP_CHECK_PREREQS], 

 [
 [

-AC_MSG_CHECKING(number of digits in LONG_MIN (incl. sign))
-AC_CACHE_VAL(blp_int_digits,
-            [AC_TRY_RUN([#include <stdio.h>
-                          #include <limits.h>
-                         int
-                         main()
-                         {
-                           int len;
-                           char s[80];
-                           sprintf(s, "%ld", LONG_MAX);
-                           len = strlen(s);
-                           sprintf(s, "%ld", LONG_MIN);
-                           if(strlen(s)>len) len=strlen(s);
-                           sprintf(s, "%lu", ULONG_MAX);
-                           if(strlen(s)>len) len=strlen(s);
-                           exit(len);
-                         }
-                        ],
-                        eval "blp_int_digits=19",
-                        eval "blp_int_digits=$?"
-                        if test "$blp_int_digits" -lt 11; then
-                          blp_int_digits=11
-                        fi,
-                        eval "blp_int_digits=19")
-            ])
-AC_DEFINE_UNQUOTED([INT_DIGITS], $blp_int_digits,
-       [Number of digits in longest `long' value, including sign.
-         This is usually 11, for 32-bit `long's, or 19, for 64-bit
-         `long's.])
-AC_MSG_RESULT($blp_int_digits) ])dnl
-
-dnl Check quality of this machine's sprintf implementation.
-
-AC_DEFUN([BLP_IS_SPRINTF_GOOD],
-[
-AC_MSG_CHECKING(if sprintf returns a char count)
-AC_CACHE_VAL(blp_is_sprintf_good,
-             [AC_TRY_RUN([#include <stdio.h>
-                          int 
-                          main()
-                          {
-                            char s[8];
-                            exit((int)sprintf(s, "abcdefg")!=7);
-                          }
-                         ], 
-                         eval "blp_is_sprintf_good=yes",
-                        eval "blp_is_sprintf_good=no",
-                        eval "blp_is_sprintf_good=no")
-             ])
-if test "$blp_is_sprintf_good" = yes; then
-  AC_DEFINE([HAVE_GOOD_SPRINTF], 1, 
-       [Define if sprintf() returns the number of characters written
-         to the destination string, excluding the null terminator.])
-  AC_MSG_RESULT(yes)
-else
-  AC_MSG_RESULT(no)
+  if test "$pspp_optional_prereqs" != ""; then
+    AC_MSG_WARN([The following optional prerequisites are not installed.
+You may wish to install them to obtain additional functionality:$pspp_optional_prereqs])

 fi
 fi

-])dnl
+  if test "$pspp_required_prereqs" != ""; then
+    AC_MSG_ERROR([The following required prerequisites are not installed.
+You must install them before PSPP can be built:$pspp_required_prereqs])
+fi
+])
+    

 
 

-dnl Check for proper random number generator.
+dnl Check that a new enough version of Perl is available.
+AC_DEFUN([PSPP_PERL],
+[
+  AC_PATH_PROG([PERL], perl, no)
+  AC_SUBST([PERL])dnl
+  if test "$PERL" != no && $PERL -e 'require 5.005_03;'; then :; else
+    PSPP_REQUIRED_PREREQ([Perl 5.005_03 (or later)])
+  fi
+])

 
 

-AC_DEFUN([BLP_RANDOM],
+dnl Check that libplot is available.
+AC_DEFUN([PSPP_LIBPLOT],

 [
 [

-AC_MSG_CHECKING(random number generator)
-AC_CACHE_VAL(blp_random_good, 
-  AC_TRY_COMPILE([#include <stdlib.h>], [int x=RAND_MAX;], 
-    blp_random_good=yes, blp_random_good=no))
-if test "$blp_random_good" = yes; then
-  AC_DEFINE([HAVE_GOOD_RANDOM], 1, 
-       [Define if rand() and company work according to ANSI.])
-  AC_MSG_RESULT(good)
-else
-  AC_MSG_RESULT(bad)
-fi
-])dnl
+  AC_ARG_WITH(libplot, [  --without-libplot         don't compile in support of charts (using libplot)])
+
+  if test x"$with_libplot" != x"no" ; then 
+    # Check whether we can link against libplot without any extra libraries.
+    AC_CHECK_LIB(plot, pl_newpl_r, [LIBPLOT_LIBS="-lplot"])
+
+    # Check whether we can link against libplot if we also link X.
+    if test x"$LIBPLOT_LIBS" = x""; then
+      AC_PATH_XTRA
+      extra_libs="-lXaw -lXmu -lXt $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS -lm"
+      AC_CHECK_LIB(plot, pl_newpl_r,
+                  [LIBPLOT_LIBS="-lplot $extra_libs"
+                    LDFLAGS="$LDFLAGS $X_LIBS"],,
+                  [$extra_libs])
+    fi
+
+    # Still can't link?
+    if test x"$LIBPLOT_LIBS" = x""; then
+      PSPP_REQUIRED_PREREQ([libplot (or use --without-libplot)])
+    fi
+
+    # Set up to make everything work.
+    LIBS="$LIBPLOT_LIBS $LIBS"
+    AC_DEFINE(HAVE_LIBPLOT, 1,
+              [Define to 1 if you have the `libplot' library (-lplot).])
+  fi
+])
+
+dnl Check that off_t is defined as an integer type.
+dnl Solaris sometimes declares it as a struct, if it
+dnl thinks that the compiler does not support `long long'.
+AC_DEFUN([PSPP_OFF_T],
+[
+  AC_COMPILE_IFELSE([#include <sys/types.h>
+  #include <unistd.h>
+  off_t x = 0;
+  int main (void) 
+  { 
+    lseek (0, 1, 2);
+    return 0;
+  }], [], [AC_MSG_ERROR(
+  [Your system's definition of off_t is broken.  You are probably
+  using Solaris.  You can probably fix the problem with
+  `--disable-largefile' or `CFLAGS=-ansi'.])])
+])
+
+dnl Check whether a C compiler option is accepted.
+dnl If so, add it to CFLAGS.
+dnl Example: PSPP_ENABLE_OPTION(-Wdeclaration-after-statement)
+AC_DEFUN([PSPP_ENABLE_OPTION],
+[
+  m4_define([pspp_cv_name], [pspp_cv_[]m4_translit([$1], [-], [_])])dnl
+  AC_CACHE_CHECK([whether $CC accepts $1], [pspp_cv_name], 
+    [pspp_save_CFLAGS="$CFLAGS"
+     CFLAGS="$CFLAGS $1"
+     AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [pspp_cv_name[]=yes], [pspp_cv_name[]=no])
+     CFLAGS="$pspp_save_CFLAGS"])
+  if test $pspp_cv_name = yes; then
+    CFLAGS="$CFLAGS $1"
+  fi
+])

 
 dnl Check for readline and history libraries.
 
 
 dnl Check for readline and history libraries.
 

-dnl Modified for PSPP by Ben Pfaff, based on readline.m4 serial 3 from
+dnl Modified for PSPP, based on readline.m4 serial 3 from

 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
 dnl Haible and Oskar Liljeblad.
 
 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
 dnl Haible and Oskar Liljeblad.
 


@@ -138,9 +154,6 @@ AC_DEFUN([PSPP_READLINE],
 
   if test "$gl_cv_lib_readline" = yes; then
     AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])
 
   if test "$gl_cv_lib_readline" = yes; then
     AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])

-  fi
-
-  if test "$gl_cv_lib_readline" = yes; then

     AC_MSG_CHECKING([how to link with libreadline])
     AC_MSG_RESULT([$LIBREADLINE])
   else
     AC_MSG_CHECKING([how to link with libreadline])
     AC_MSG_RESULT([$LIBREADLINE])
   else


@@ -151,9 +164,45 @@ AC_DEFUN([PSPP_READLINE],
     LTLIBREADLINE=
     LIBHISTORY=
     LTLIBHISTORY=
     LTLIBREADLINE=
     LIBHISTORY=
     LTLIBHISTORY=

+    PSPP_OPTIONAL_PREREQ([libreadline (which may itself require libncurses or libtermcap)])

   fi
   AC_SUBST(LIBREADLINE)
   AC_SUBST(LTLIBREADLINE)
 ])
 
   fi
   AC_SUBST(LIBREADLINE)
   AC_SUBST(LTLIBREADLINE)
 ])
 

+dnl Check for build tools.  Adapted from bfd library.
+
+AC_DEFUN([PSPP_CC_FOR_BUILD],
+[# Put a plausible default for CC_FOR_BUILD in Makefile.
+if test -z "$CC_FOR_BUILD"; then
+  if test "x$cross_compiling" = "xno"; then
+    CC_FOR_BUILD='$(CC)'
+  else
+    CC_FOR_BUILD=cc
+  fi
+fi
+AC_SUBST(CC_FOR_BUILD)
+# Also set EXEEXT_FOR_BUILD.
+if test "x$cross_compiling" = "xno"; then
+  EXEEXT_FOR_BUILD='$(EXEEXT)'
+else
+  AC_CACHE_CHECK([for build system executable suffix], pspp_cv_build_exeext,
+    [rm -f conftest*
+     echo 'int main () { return 0; }' > conftest.c
+     pspp_cv_build_exeext=
+     ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
+     for file in conftest.*; do
+       case $file in # (
+       *.c | *.o | *.obj | *.ilk | *.pdb) ;; # (
+       *) pspp_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
+       esac
+     done
+     rm -f conftest*
+     test x"${pspp_cv_build_exeext}" = x && pspp_cv_build_exeext=no])
+  EXEEXT_FOR_BUILD=""
+  test x"${pspp_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${pspp_cv_build_exeex
+t}
+fi
+AC_SUBST(EXEEXT_FOR_BUILD)])
+

 dnl aclocal.m4 ends here
 dnl aclocal.m4 ends here