1 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
2 dnl This file is free software; the Free Software Foundation
3 dnl gives unlimited permission to copy and/or distribute it,
4 dnl with or without modifications, as long as this notice is preserved.
8 dnl Instead of giving an error about each prerequisite as we encounter it,
9 dnl group them all together at the end of the run, to be user-friendly.
10 AC_DEFUN([PSPP_REQUIRED_PREREQ], [pspp_required_prereqs="$pspp_required_prereqs
12 AC_DEFUN([PSPP_OPTIONAL_PREREQ], [pspp_optional_prereqs="$pspp_optional_prereqs
14 AC_DEFUN([PSPP_CHECK_PREREQS],
16 if test "$pspp_optional_prereqs" != ""; then
17 AC_MSG_WARN([The following optional prerequisites are not installed.
18 You may wish to install them to obtain additional functionality:$pspp_optional_prereqs])
20 if test "$pspp_required_prereqs" != ""; then
21 AC_MSG_ERROR([The following required prerequisites are not installed.
22 You must install them before PSPP can be built:$pspp_required_prereqs])
27 dnl Check that a new enough version of Perl is available.
30 AC_PATH_PROG([PERL], perl, no)
32 if test "$PERL" != no && $PERL -e 'require 5.005_03;'; then :; else
33 PSPP_REQUIRED_PREREQ([Perl 5.005_03 (or later)])
37 dnl Check that libplot is available.
38 AC_DEFUN([PSPP_LIBPLOT],
42 [AS_HELP_STRING([--without-libplot],
43 [don't compile in support of charts (using libplot)])])
45 if test x"$with_libplot" != x"no" ; then
46 # Check whether we can link against libplot without any extra libraries.
47 AC_CHECK_LIB(plot, pl_newpl_r, [LIBPLOT_LIBS="-lplot"])
49 # Check whether we can link against libplot if we also link X.
50 if test x"$LIBPLOT_LIBS" = x""; then
52 extra_libs="-lXaw -lXmu -lXt $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS -lm"
53 AC_CHECK_LIB(plot, pl_newpl_r,
54 [LIBPLOT_LIBS="-lplot $extra_libs"
55 LDFLAGS="$LDFLAGS $X_LIBS"],,
60 if test x"$LIBPLOT_LIBS" = x""; then
61 PSPP_REQUIRED_PREREQ([libplot (or use --without-libplot)])
64 # Set up to make everything work.
65 LIBS="$LIBPLOT_LIBS $LIBS"
66 AC_DEFINE(HAVE_LIBPLOT, 1,
67 [Define to 1 if you have the `libplot' library (-lplot).])
71 dnl Check that off_t is defined as an integer type.
72 dnl Solaris sometimes declares it as a struct, if it
73 dnl thinks that the compiler does not support `long long'.
74 AC_DEFUN([PSPP_OFF_T],
76 AC_COMPILE_IFELSE([#include <sys/types.h>
83 }], [], [AC_MSG_ERROR(
84 [Your system's definition of off_t is broken. You are probably
85 using Solaris. You can probably fix the problem with
86 `--disable-largefile' or `CFLAGS=-ansi'.])])
89 dnl Check whether a C compiler option is accepted.
90 dnl If so, add it to CFLAGS.
91 dnl Example: PSPP_ENABLE_OPTION(-Wdeclaration-after-statement)
92 AC_DEFUN([PSPP_ENABLE_OPTION],
94 m4_define([pspp_cv_name], [pspp_cv_[]m4_translit([$1], [-], [_])])dnl
95 AC_CACHE_CHECK([whether $CC accepts $1], [pspp_cv_name],
96 [pspp_save_CFLAGS="$CFLAGS"
98 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [pspp_cv_name[]=yes], [pspp_cv_name[]=no])
99 CFLAGS="$pspp_save_CFLAGS"])
100 if test $pspp_cv_name = yes; then
105 dnl Check for readline and history libraries.
107 dnl Modified for PSPP, based on readline.m4 serial 3 from
108 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
109 dnl Haible and Oskar Liljeblad.
111 AC_DEFUN([PSPP_READLINE],
113 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
114 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
115 AC_REQUIRE([AC_LIB_RPATH])
117 dnl Search for libreadline and define LIBREADLINE, LTLIBREADLINE and
118 dnl INCREADLINE accordingly.
119 AC_LIB_LINKFLAGS_BODY([readline])
120 AC_LIB_LINKFLAGS_BODY([history])
122 dnl Add $INCREADLINE to CPPFLAGS before performing the following checks,
123 dnl because if the user has installed libreadline and not disabled its use
124 dnl via --without-libreadline-prefix, he wants to use it. The AC_TRY_LINK
125 dnl will then succeed.
126 am_save_CPPFLAGS="$CPPFLAGS"
127 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCREADLINE $INCHISTORY])
129 AC_CACHE_CHECK(for readline, gl_cv_lib_readline, [
130 gl_cv_lib_readline=no
132 dnl On some systems, -lreadline doesn't link without an additional
133 dnl -lncurses or -ltermcap.
134 dnl Try -lncurses before -ltermcap, because libtermcap is unsecure
135 dnl by design and obsolete since 1994. Try -lcurses last, because
136 dnl libcurses is unusable on some old Unices.
137 for extra_lib in "" ncurses termcap curses; do
138 LIBS="$am_save_LIBS $LIBREADLINE $LIBHISTORY"
139 if test -n "$extra_lib"; then
140 LIBS="$LIBS -l$extra_lib"
142 AC_TRY_LINK([#include <stdio.h>
143 #include <readline/readline.h>
144 #include <readline/history.h>],
145 [readline((char*)0); add_history((char*)0);],
146 gl_cv_lib_readline=yes)
147 if test "$gl_cv_lib_readline" = yes; then
148 if test -n "$extra_lib"; then
149 LIBREADLINE="$LIBREADLINE $LIBHISTORY -l$extra_lib"
150 LTLIBREADLINE="$LTLIBREADLINE $LTLIBHISTORY -l$extra_lib"
158 if test "$gl_cv_lib_readline" = yes; then
159 AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])
160 AC_MSG_CHECKING([how to link with libreadline])
161 AC_MSG_RESULT([$LIBREADLINE])
163 dnl If $LIBREADLINE didn't lead to a usable library, we don't
164 dnl need $INCREADLINE either.
165 CPPFLAGS="$am_save_CPPFLAGS"
170 PSPP_OPTIONAL_PREREQ([libreadline (which may itself require libncurses or libtermcap)])
172 AC_SUBST(LIBREADLINE)
173 AC_SUBST(LTLIBREADLINE)
176 dnl Check for build tools. Adapted from bfd library.
178 AC_DEFUN([PSPP_CC_FOR_BUILD],
179 [# Put a plausible default for CC_FOR_BUILD in Makefile.
180 if test -z "$CC_FOR_BUILD"; then
181 if test "x$cross_compiling" = "xno"; then
187 AC_SUBST(CC_FOR_BUILD)
188 # Also set EXEEXT_FOR_BUILD.
189 if test "x$cross_compiling" = "xno"; then
190 EXEEXT_FOR_BUILD='$(EXEEXT)'
192 AC_CACHE_CHECK([for build system executable suffix], pspp_cv_build_exeext,
194 echo 'int main () { return 0; }' > conftest.c
195 pspp_cv_build_exeext=
196 ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
197 for file in conftest.*; do
199 *.c | *.o | *.obj | *.ilk | *.pdb) ;; # (
200 *) pspp_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
204 test x"${pspp_cv_build_exeext}" = x && pspp_cv_build_exeext=no])
206 test x"${pspp_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${pspp_cv_build_exeex
209 AC_SUBST(EXEEXT_FOR_BUILD)])
211 dnl Check for LC_PAPER, _NL_PAPER_WIDTH, _NL_PAPER_HEIGHT.
212 AC_DEFUN([PSPP_LC_PAPER],
213 [AC_CACHE_CHECK(for LC_PAPER, pspp_cv_lc_paper, [
218 #include <langinfo.h>
220 [(void) LC_PAPER; (void) _NL_PAPER_WIDTH; (void) _NL_PAPER_HEIGHT])],
221 [pspp_cv_lc_paper=yes])
223 if test "$pspp_cv_lc_paper" = yes; then
224 AC_DEFINE(HAVE_LC_PAPER, 1, [Define if you have LC_PAPER.])
228 dnl acinclude.m4 ends here