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 && $PERL -e 'require 5.005_03;'; then :; else
33 PSPP_REQUIRED_PREREQ([Perl 5.005_03 (or later)])
37 dnl Check that libplot is available.
38 AC_DEFUN([PSPP_LIBPLOT],
40 AC_ARG_WITH(libplot, [ --without-libplot don't compile in support of charts (using libplot)])
42 if test x"$with_libplot" != x"no" ; then
43 # Check whether we can link against libplot without any extra libraries.
44 AC_CHECK_LIB(plot, pl_newpl_r, [LIBPLOT_LIBS="-lplot"])
46 # Check whether we can link against libplot if we also link X.
47 if test x"$LIBPLOT_LIBS" = x""; then
49 extra_libs="-lXaw -lXmu -lXt $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS -lm"
50 AC_CHECK_LIB(plot, pl_newpl_r,
51 [LIBPLOT_LIBS="-lplot $extra_libs"
52 LDFLAGS="$LDFLAGS $X_LIBS"],,
57 if test x"$LIBPLOT_LIBS" = x""; then
58 PSPP_REQUIRED_PREREQ([libplot (or use --without-libplot)])
61 # Set up to make everything work.
62 LIBS="$LIBPLOT_LIBS $LIBS"
63 AC_DEFINE(HAVE_LIBPLOT, 1,
64 [Define to 1 if you have the `libplot' library (-lplot).])
68 dnl Check that off_t is defined as an integer type.
69 dnl Solaris sometimes declares it as a struct, if it
70 dnl thinks that the compiler does not support `long long'.
71 AC_DEFUN([PSPP_OFF_T],
73 AC_COMPILE_IFELSE([#include <sys/types.h>
80 }], [], [AC_MSG_ERROR(
81 [Your system's definition of off_t is broken. You are probably
82 using Solaris. You can probably fix the problem with
83 `--disable-largefile' or `CFLAGS=-ansi'.])])
86 dnl Check whether a C compiler option is accepted.
87 dnl If so, add it to CFLAGS.
88 dnl Example: PSPP_ENABLE_OPTION(-Wdeclaration-after-statement)
89 AC_DEFUN([PSPP_ENABLE_OPTION],
91 m4_define([pspp_cv_name], [pspp_cv_[]m4_translit([$1], [-], [_])])dnl
92 AC_CACHE_CHECK([whether $CC accepts $1], [pspp_cv_name],
93 [pspp_save_CFLAGS="$CFLAGS"
95 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [pspp_cv_name[]=yes], [pspp_cv_name[]=no])
96 CFLAGS="$pspp_save_CFLAGS"])
97 if test $pspp_cv_name = yes; then
102 dnl Check for readline and history libraries.
104 dnl Modified for PSPP, based on readline.m4 serial 3 from
105 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
106 dnl Haible and Oskar Liljeblad.
108 AC_DEFUN([PSPP_READLINE],
110 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
111 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
112 AC_REQUIRE([AC_LIB_RPATH])
114 dnl Search for libreadline and define LIBREADLINE, LTLIBREADLINE and
115 dnl INCREADLINE accordingly.
116 AC_LIB_LINKFLAGS_BODY([readline])
117 AC_LIB_LINKFLAGS_BODY([history])
119 dnl Add $INCREADLINE to CPPFLAGS before performing the following checks,
120 dnl because if the user has installed libreadline and not disabled its use
121 dnl via --without-libreadline-prefix, he wants to use it. The AC_TRY_LINK
122 dnl will then succeed.
123 am_save_CPPFLAGS="$CPPFLAGS"
124 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCREADLINE $INCHISTORY])
126 AC_CACHE_CHECK(for readline, gl_cv_lib_readline, [
127 gl_cv_lib_readline=no
129 dnl On some systems, -lreadline doesn't link without an additional
130 dnl -lncurses or -ltermcap.
131 dnl Try -lncurses before -ltermcap, because libtermcap is unsecure
132 dnl by design and obsolete since 1994. Try -lcurses last, because
133 dnl libcurses is unusable on some old Unices.
134 for extra_lib in "" ncurses termcap curses; do
135 LIBS="$am_save_LIBS $LIBREADLINE $LIBHISTORY"
136 if test -n "$extra_lib"; then
137 LIBS="$LIBS -l$extra_lib"
139 AC_TRY_LINK([#include <stdio.h>
140 #include <readline/readline.h>
141 #include <readline/history.h>],
142 [readline((char*)0); add_history((char*)0);],
143 gl_cv_lib_readline=yes)
144 if test "$gl_cv_lib_readline" = yes; then
145 if test -n "$extra_lib"; then
146 LIBREADLINE="$LIBREADLINE $LIBHISTORY -l$extra_lib"
147 LTLIBREADLINE="$LTLIBREADLINE $LTLIBHISTORY -l$extra_lib"
155 if test "$gl_cv_lib_readline" = yes; then
156 AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])
157 AC_MSG_CHECKING([how to link with libreadline])
158 AC_MSG_RESULT([$LIBREADLINE])
160 dnl If $LIBREADLINE didn't lead to a usable library, we don't
161 dnl need $INCREADLINE either.
162 CPPFLAGS="$am_save_CPPFLAGS"
167 PSPP_OPTIONAL_PREREQ([libreadline (which may itself require libncurses or libtermcap)])
169 AC_SUBST(LIBREADLINE)
170 AC_SUBST(LTLIBREADLINE)
173 dnl Check for build tools. Adapted from bfd library.
175 AC_DEFUN([PSPP_CC_FOR_BUILD],
176 [# Put a plausible default for CC_FOR_BUILD in Makefile.
177 if test -z "$CC_FOR_BUILD"; then
178 if test "x$cross_compiling" = "xno"; then
184 AC_SUBST(CC_FOR_BUILD)
185 # Also set EXEEXT_FOR_BUILD.
186 if test "x$cross_compiling" = "xno"; then
187 EXEEXT_FOR_BUILD='$(EXEEXT)'
189 AC_CACHE_CHECK([for build system executable suffix], pspp_cv_build_exeext,
191 echo 'int main () { return 0; }' > conftest.c
192 pspp_cv_build_exeext=
193 ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
194 for file in conftest.*; do
196 *.c | *.o | *.obj | *.ilk | *.pdb) ;; # (
197 *) pspp_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
201 test x"${pspp_cv_build_exeext}" = x && pspp_cv_build_exeext=no])
203 test x"${pspp_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${pspp_cv_build_exeex
206 AC_SUBST(EXEEXT_FOR_BUILD)])
208 dnl Check for LC_PAPER, _NL_PAPER_WIDTH, _NL_PAPER_HEIGHT.
209 AC_DEFUN([PSPP_LC_PAPER],
210 [AC_CACHE_CHECK(for LC_PAPER, pspp_cv_lc_paper, [
215 #include <langinfo.h>
217 [(void) LC_PAPER; (void) _NL_PAPER_WIDTH; (void) _NL_PAPER_HEIGHT])],
218 [pspp_cv_lc_paper=yes])
220 if test "$pspp_cv_lc_paper" = yes; then
221 AC_DEFINE(HAVE_LC_PAPER, 1, [Define if you have LC_PAPER.])
225 dnl acinclude.m4 ends here