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 Summarize all the missing prerequisites at the end of the run to
9 dnl increase user-friendliness.
10 AC_DEFUN([PSPP_REQUIRED_PREREQ],
11 [AC_MSG_WARN([You must install $1 before building PSPP.])
12 pspp_required_prereqs="$pspp_required_prereqs
14 AC_DEFUN([PSPP_OPTIONAL_PREREQ], [pspp_optional_prereqs="$pspp_optional_prereqs
16 AC_DEFUN([PSPP_CHECK_PREREQS],
18 if test "$pspp_optional_prereqs" != ""; then
19 AC_MSG_WARN([The following optional prerequisites are not installed.
20 You may wish to install them to obtain additional functionality:$pspp_optional_prereqs])
22 if test "$pspp_required_prereqs" != ""; then
23 AC_MSG_ERROR([The following required prerequisites are not installed.
24 You must install them before PSPP can be built:$pspp_required_prereqs])
29 dnl Check that a new enough version of Perl is available.
32 AC_PATH_PROG([PERL], perl, no)
34 if test "$PERL" != no && $PERL -e 'require 5.005_03;'; then :; else
35 PSPP_REQUIRED_PREREQ([Perl 5.005_03 (or later)])
39 dnl Check that libplot is available.
40 AC_DEFUN([PSPP_LIBPLOT],
44 [AS_HELP_STRING([--without-libplot],
45 [don't compile in support of charts (using libplot)])])
47 if test x"$with_libplot" != x"no" ; then
48 # Check whether we can link against libplot without any extra libraries.
49 AC_CHECK_LIB(plot, pl_newpl_r, [LIBPLOT_LIBS="-lplot"])
51 # Check whether we can link against libplot if we also link X.
52 if test x"$LIBPLOT_LIBS" = x""; then
54 extra_libs="-lXaw -lXmu -lXt $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS -lm"
55 AC_CHECK_LIB(plot, pl_newpl_r,
56 [LIBPLOT_LIBS="-lplot $extra_libs"
57 LDFLAGS="$LDFLAGS $X_LIBS"],,
62 if test x"$LIBPLOT_LIBS" = x""; then
63 PSPP_REQUIRED_PREREQ([libplot (or use --without-libplot)])
66 # Set up to make everything work.
67 LIBS="$LIBPLOT_LIBS $LIBS"
68 AC_DEFINE(HAVE_LIBPLOT, 1,
69 [Define to 1 if you have the `libplot' library (-lplot).])
73 dnl Check whether a C compiler option is accepted.
74 dnl If so, add it to CFLAGS.
75 dnl Example: PSPP_ENABLE_OPTION(-Wdeclaration-after-statement)
76 AC_DEFUN([PSPP_ENABLE_OPTION],
78 m4_define([pspp_cv_name], [pspp_cv_[]m4_translit([$1], [-], [_])])dnl
79 AC_CACHE_CHECK([whether $CC accepts $1], [pspp_cv_name],
80 [pspp_save_CFLAGS="$CFLAGS"
82 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [pspp_cv_name[]=yes], [pspp_cv_name[]=no])
83 CFLAGS="$pspp_save_CFLAGS"])
84 if test $pspp_cv_name = yes; then
89 dnl Check for readline and history libraries.
91 dnl Modified for PSPP, based on readline.m4 serial 3 from
92 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
93 dnl Haible and Oskar Liljeblad.
95 AC_DEFUN([PSPP_READLINE],
97 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
98 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
99 AC_REQUIRE([AC_LIB_RPATH])
101 dnl Search for libreadline and define LIBREADLINE, LTLIBREADLINE and
102 dnl INCREADLINE accordingly.
103 AC_LIB_LINKFLAGS_BODY([readline])
104 AC_LIB_LINKFLAGS_BODY([history])
106 dnl Add $INCREADLINE to CPPFLAGS before performing the following checks,
107 dnl because if the user has installed libreadline and not disabled its use
108 dnl via --without-libreadline-prefix, he wants to use it. The AC_LINK_IFELSE
109 dnl will then succeed.
110 am_save_CPPFLAGS="$CPPFLAGS"
111 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCREADLINE $INCHISTORY])
113 AC_CACHE_CHECK(for readline, gl_cv_lib_readline, [
114 gl_cv_lib_readline=no
116 dnl On some systems, -lreadline doesn't link without an additional
117 dnl -lncurses or -ltermcap.
118 dnl Try -lncurses before -ltermcap, because libtermcap is unsecure
119 dnl by design and obsolete since 1994. Try -lcurses last, because
120 dnl libcurses is unusable on some old Unices.
121 for extra_lib in "" ncurses termcap curses; do
122 LIBS="$am_save_LIBS $LIBREADLINE $LIBHISTORY"
123 if test -n "$extra_lib"; then
124 LIBS="$LIBS -l$extra_lib"
126 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
127 #include <readline/readline.h>
128 #include <readline/history.h>]], [[readline((char*)0); add_history((char*)0);]])],[gl_cv_lib_readline=yes],[])
129 if test "$gl_cv_lib_readline" = yes; then
130 if test -n "$extra_lib"; then
131 LIBREADLINE="$LIBREADLINE $LIBHISTORY -l$extra_lib"
132 LTLIBREADLINE="$LTLIBREADLINE $LTLIBHISTORY -l$extra_lib"
140 if test "$gl_cv_lib_readline" = yes; then
141 AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])
142 AC_MSG_CHECKING([how to link with libreadline])
143 AC_MSG_RESULT([$LIBREADLINE])
145 dnl If $LIBREADLINE didn't lead to a usable library, we don't
146 dnl need $INCREADLINE either.
147 CPPFLAGS="$am_save_CPPFLAGS"
152 PSPP_OPTIONAL_PREREQ([libreadline (which may itself require libncurses or libtermcap)])
154 AC_SUBST(LIBREADLINE)
155 AC_SUBST(LTLIBREADLINE)
158 dnl Check for build tools. Adapted from bfd library.
160 AC_DEFUN([PSPP_CC_FOR_BUILD],
161 [# Put a plausible default for CC_FOR_BUILD in Makefile.
162 if test -z "$CC_FOR_BUILD"; then
163 if test "x$cross_compiling" = "xno"; then
169 AC_SUBST(CC_FOR_BUILD)
170 # Also set EXEEXT_FOR_BUILD.
171 if test "x$cross_compiling" = "xno"; then
172 EXEEXT_FOR_BUILD='$(EXEEXT)'
174 AC_CACHE_CHECK([for build system executable suffix], pspp_cv_build_exeext,
176 echo 'int main () { return 0; }' > conftest.c
177 pspp_cv_build_exeext=
178 ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
179 for file in conftest.*; do
181 *.c | *.o | *.obj | *.ilk | *.pdb) ;; # (
182 *) pspp_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
186 test x"${pspp_cv_build_exeext}" = x && pspp_cv_build_exeext=no])
188 test x"${pspp_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${pspp_cv_build_exeex
191 AC_SUBST(EXEEXT_FOR_BUILD)])
193 dnl Check for LC_PAPER, _NL_PAPER_WIDTH, _NL_PAPER_HEIGHT.
194 AC_DEFUN([PSPP_LC_PAPER],
195 [AC_CACHE_CHECK(for LC_PAPER, pspp_cv_lc_paper, [
200 #include <langinfo.h>
202 [(void) LC_PAPER; (void) _NL_PAPER_WIDTH; (void) _NL_PAPER_HEIGHT])],
203 [pspp_cv_lc_paper=yes])
205 if test "$pspp_cv_lc_paper" = yes; then
206 AC_DEFINE(HAVE_LC_PAPER, 1, [Define if you have LC_PAPER.])
211 # PSPP_LINK2_IFELSE(SOURCE1, SOURCE2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
212 # -------------------------------------------------------------
213 # Based on AC_LINK_IFELSE, but tries to link both SOURCE1 and SOURCE2
216 # Test that resulting file is executable; see the problem reported by mwoehlke
217 # in <http://lists.gnu.org/archive/html/bug-coreutils/2006-10/msg00048.html>.
218 # But skip the test when cross-compiling, to prevent problems like the one
219 # reported by Chris Johns in
220 # <http://lists.gnu.org/archive/html/autoconf/2007-03/msg00085.html>.
222 m4_define([PSPP_LINK2_IFELSE],
223 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
224 mv conftest.$ac_ext conftest1.$ac_ext
225 m4_ifvaln([$2], [AC_LANG_CONFTEST([$2])])dnl
226 mv conftest.$ac_ext conftest2.$ac_ext
227 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
228 pspp_link2='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest1.$ac_ext conftest2.$ac_ext $LIBS >&5'
229 AS_IF([_AC_DO_STDERR($pspp_link2) && {
230 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
231 test ! -s conftest.err
232 } && test -s conftest$ac_exeext && {
233 test "$cross_compiling" = yes ||
234 AS_TEST_X([conftest$ac_exeext])
237 [echo "$as_me: failed source file 1 of 2 was:" >&5
238 sed 's/^/| /' conftest1.$ac_ext >&5
239 echo "$as_me: failed source file 2 of 2 was:" >&5
240 sed 's/^/| /' conftest2.$ac_ext >&5
242 dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
243 dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
244 dnl as it would interfere with the next link command.
245 rm -rf conftest.dSYM conftest1.dSYM conftest2.dSYM
246 rm -f core conftest.err conftest1.err conftest2.err
247 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest*_ipa8_conftest*.oo
248 rm -f conftest$ac_exeext
249 rm -f m4_ifval([$1], [conftest1.$ac_ext]) m4_ifval([$2], [conftest1.$ac_ext])[]dnl
250 ])# PSPP_LINK2_IFELSE
252 # GSL uses "extern inline" without determining whether the compiler uses
253 # GCC inline rules or C99 inline rules. If it uses the latter then GSL
254 # will be broken without passing -fgnu89-inline to GCC.
255 AC_DEFUN([PSPP_GSL_NEEDS_FGNU89_INLINE],
256 [# GSL only uses "inline" at all if HAVE_INLINE is defined as a macro.
257 # In turn, gnulib's gl_INLINE is one macro that does that. We need to
258 # make sure that it has run by the time we run this test, otherwise we'll
259 # get a false result.
260 AC_REQUIRE([gl_INLINE])
261 AC_CACHE_CHECK([whether GSL needs -fgnu89-inline to link],
262 pspp_cv_gsl_needs_fgnu89_inline, [
264 [AC_LANG_PROGRAM([#include <gsl/gsl_math.h>
265 ], [GSL_MAX_INT(1,2);])],
266 [AC_LANG_SOURCE([#include <gsl/gsl_math.h>
268 [pspp_cv_gsl_needs_fgnu89_inline=no],
269 [pspp_cv_gsl_needs_fgnu89_inline=yes])])
270 if test "$pspp_cv_gsl_needs_fgnu89_inline" = "yes"; then
271 CFLAGS="$CFLAGS -fgnu89-inline"
274 dnl acinclude.m4 ends here