dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
+dnl Prerequisites.
+
+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
+ $1"])
+AC_DEFUN([PSPP_CHECK_PREREQS],
+[
+ if test "$pspp_optional_prereqs" != ""; then
+ AC_MSG_WARN([The following optional prerequisites are not installed.
+You may wish to install them to obtain additional functionality:$pspp_optional_prereqs])
+fi
+ if test "$pspp_required_prereqs" != ""; then
+ AC_MSG_ERROR([The following required prerequisites are not installed.
+You must install them before PSPP can be built:$pspp_required_prereqs])
+fi
+])
+
+
+dnl Check that a new enough version of Perl is available.
+AC_DEFUN([PSPP_PERL],
+[
+ AC_PATH_PROG([PERL], perl, no)
+ AC_SUBST([PERL])dnl
+ if test "$PERL" != no && $PERL -e 'require 5.005_03;'; then :; else
+ PSPP_REQUIRED_PREREQ([Perl 5.005_03 (or later)])
+ fi
+])
+
+dnl Check that libplot is available.
+AC_DEFUN([PSPP_LIBPLOT],
+[
+ AC_ARG_WITH(libplot, [ --without-libplot don't compile in support of charts (using libplot)])
+
+ if test x"$with_libplot" != x"no" ; then
+ AC_CHECK_LIB(plot, pl_newpl_r,,
+ [PSPP_REQUIRED_PREREQ([libplot (or use --without-libplot)])])
+ 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 warning flag is accepted.
dnl If so, add it to CFLAGS.
dnl Example: PSPP_ENABLE_WARNING(-Wdeclaration-after-statement)
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.
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
LTLIBREADLINE=
LIBHISTORY=
LTLIBHISTORY=
+ PSPP_OPTIONAL_PREREQ([libreadline (which may itself require libncurses or libtermcap)])
fi
AC_SUBST(LIBREADLINE)
AC_SUBST(LTLIBREADLINE)