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 PSPP_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
74 dnl Check whether the given C compiler OPTION is accepted.
75 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
76 AC_DEFUN([PSPP_CHECK_CC_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
85 m4_if([$2], [], [;], [$2])
87 m4_if([$3], [], [:], [$3])
91 dnl PSPP_ENABLE_OPTION([OPTION])
92 dnl Check whether the given C compiler OPTION is accepted.
93 dnl If so, add it to CFLAGS.
94 dnl Example: PSPP_ENABLE_OPTION([-Wdeclaration-after-statement])
95 AC_DEFUN([PSPP_ENABLE_OPTION],
96 [PSPP_CHECK_CC_OPTION([$1], [CFLAGS="$CFLAGS $1"])])
98 dnl Check for readline and history libraries.
100 dnl Modified for PSPP, based on readline.m4 serial 3 from
101 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
102 dnl Haible and Oskar Liljeblad.
104 AC_DEFUN([PSPP_READLINE],
106 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
107 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
108 AC_REQUIRE([AC_LIB_RPATH])
110 dnl Search for libreadline and define LIBREADLINE, LTLIBREADLINE and
111 dnl INCREADLINE accordingly.
112 AC_LIB_LINKFLAGS_BODY([readline])
113 AC_LIB_LINKFLAGS_BODY([history])
115 dnl Add $INCREADLINE to CPPFLAGS before performing the following checks,
116 dnl because if the user has installed libreadline and not disabled its use
117 dnl via --without-libreadline-prefix, he wants to use it. The AC_LINK_IFELSE
118 dnl will then succeed.
119 am_save_CPPFLAGS="$CPPFLAGS"
120 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCREADLINE $INCHISTORY])
122 AC_CACHE_CHECK(for readline, gl_cv_lib_readline, [
123 gl_cv_lib_readline=no
125 dnl On some systems, -lreadline doesn't link without an additional
126 dnl -lncurses or -ltermcap.
127 dnl Try -lncurses before -ltermcap, because libtermcap is unsecure
128 dnl by design and obsolete since 1994. Try -lcurses last, because
129 dnl libcurses is unusable on some old Unices.
130 for extra_lib in "" ncurses termcap curses; do
131 LIBS="$am_save_LIBS $LIBREADLINE $LIBHISTORY"
132 if test -n "$extra_lib"; then
133 LIBS="$LIBS -l$extra_lib"
135 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
136 #include <readline/readline.h>
137 #include <readline/history.h>]], [[readline((char*)0); add_history((char*)0);]])],[gl_cv_lib_readline=yes],[])
138 if test "$gl_cv_lib_readline" = yes; then
139 if test -n "$extra_lib"; then
140 LIBREADLINE="$LIBREADLINE $LIBHISTORY -l$extra_lib"
141 LTLIBREADLINE="$LTLIBREADLINE $LTLIBHISTORY -l$extra_lib"
149 if test "$gl_cv_lib_readline" = yes; then
150 AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])
151 AC_MSG_CHECKING([how to link with libreadline])
152 AC_MSG_RESULT([$LIBREADLINE])
154 dnl If $LIBREADLINE didn't lead to a usable library, we don't
155 dnl need $INCREADLINE either.
156 CPPFLAGS="$am_save_CPPFLAGS"
161 PSPP_OPTIONAL_PREREQ([libreadline (which may itself require libncurses or libtermcap)])
163 AC_SUBST(LIBREADLINE)
164 AC_SUBST(LTLIBREADLINE)
167 dnl Check for build tools. Adapted from bfd library.
169 AC_DEFUN([PSPP_CC_FOR_BUILD],
170 [# Put a plausible default for CC_FOR_BUILD in Makefile.
171 if test -z "$CC_FOR_BUILD"; then
172 if test "x$cross_compiling" = "xno"; then
178 AC_SUBST(CC_FOR_BUILD)
179 # Also set EXEEXT_FOR_BUILD.
180 if test "x$cross_compiling" = "xno"; then
181 EXEEXT_FOR_BUILD='$(EXEEXT)'
183 AC_CACHE_CHECK([for build system executable suffix], pspp_cv_build_exeext,
185 echo 'int main () { return 0; }' > conftest.c
186 pspp_cv_build_exeext=
187 ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
188 for file in conftest.*; do
190 *.c | *.o | *.obj | *.ilk | *.pdb) ;; # (
191 *) pspp_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
195 test x"${pspp_cv_build_exeext}" = x && pspp_cv_build_exeext=no])
197 test x"${pspp_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${pspp_cv_build_exeex
200 AC_SUBST(EXEEXT_FOR_BUILD)])
202 dnl Check for LC_PAPER, _NL_PAPER_WIDTH, _NL_PAPER_HEIGHT.
203 AC_DEFUN([PSPP_LC_PAPER],
204 [AC_CACHE_CHECK(for LC_PAPER, pspp_cv_lc_paper, [
209 #include <langinfo.h>
211 [(void) LC_PAPER; (void) _NL_PAPER_WIDTH; (void) _NL_PAPER_HEIGHT])],
212 [pspp_cv_lc_paper=yes])
214 if test "$pspp_cv_lc_paper" = yes; then
215 AC_DEFINE(HAVE_LC_PAPER, 1, [Define if you have LC_PAPER.])
220 # PSPP_LINK2_IFELSE(SOURCE1, SOURCE2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
221 # -------------------------------------------------------------
222 # Based on AC_LINK_IFELSE, but tries to link both SOURCE1 and SOURCE2
225 # Test that resulting file is executable; see the problem reported by mwoehlke
226 # in <http://lists.gnu.org/archive/html/bug-coreutils/2006-10/msg00048.html>.
227 # But skip the test when cross-compiling, to prevent problems like the one
228 # reported by Chris Johns in
229 # <http://lists.gnu.org/archive/html/autoconf/2007-03/msg00085.html>.
231 m4_define([PSPP_LINK2_IFELSE],
232 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
233 mv conftest.$ac_ext conftest1.$ac_ext
234 m4_ifvaln([$2], [AC_LANG_CONFTEST([$2])])dnl
235 mv conftest.$ac_ext conftest2.$ac_ext
236 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
237 pspp_link2='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest1.$ac_ext conftest2.$ac_ext $LIBS >&5'
238 AS_IF([_AC_DO_STDERR($pspp_link2) && {
239 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
240 test ! -s conftest.err
241 } && test -s conftest$ac_exeext && {
242 test "$cross_compiling" = yes ||
243 AS_TEST_X([conftest$ac_exeext])
246 [echo "$as_me: failed source file 1 of 2 was:" >&5
247 sed 's/^/| /' conftest1.$ac_ext >&5
248 echo "$as_me: failed source file 2 of 2 was:" >&5
249 sed 's/^/| /' conftest2.$ac_ext >&5
251 dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
252 dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
253 dnl as it would interfere with the next link command.
254 rm -rf conftest.dSYM conftest1.dSYM conftest2.dSYM
255 rm -f core conftest.err conftest1.err conftest2.err
256 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest*_ipa8_conftest*.oo
257 rm -f conftest$ac_exeext
258 rm -f m4_ifval([$1], [conftest1.$ac_ext]) m4_ifval([$2], [conftest1.$ac_ext])[]dnl
259 ])# PSPP_LINK2_IFELSE
261 # GSL uses "extern inline" without determining whether the compiler uses
262 # GCC inline rules or C99 inline rules. If it uses the latter then GSL
263 # will be broken without passing -fgnu89-inline to GCC.
264 AC_DEFUN([PSPP_GSL_NEEDS_FGNU89_INLINE],
265 [# GSL only uses "inline" at all if HAVE_INLINE is defined as a macro.
266 # In turn, gnulib's gl_INLINE is one macro that does that. We need to
267 # make sure that it has run by the time we run this test, otherwise we'll
268 # get a false result.
269 AC_REQUIRE([gl_INLINE])
270 PSPP_CHECK_CC_OPTION(
272 [AC_CACHE_CHECK([whether GSL needs -fgnu89-inline to link],
273 pspp_cv_gsl_needs_fgnu89_inline, [
275 [AC_LANG_PROGRAM([#include <gsl/gsl_math.h>
276 ], [GSL_MAX_INT(1,2);])],
277 [AC_LANG_SOURCE([#include <gsl/gsl_math.h>
279 [pspp_cv_gsl_needs_fgnu89_inline=no],
280 [pspp_cv_gsl_needs_fgnu89_inline=yes])])
281 if test "$pspp_cv_gsl_needs_fgnu89_inline" = "yes"; then
282 CFLAGS="$CFLAGS -fgnu89-inline"
285 dnl acinclude.m4 ends here