1 dnl Copyright (C) 2005, 2006, 2007, 2009 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)])
38 # The PSPP autobuilder appends a build number to the PSPP version number,
39 # e.g. "0.7.2-build40". But Perl won't parse version numbers that contain
40 # anything other than digits and periods, so "-build" causes an error. So we
41 # define $(VERSION_FOR_PERL) that drops everything from the hyphen onward.
42 VERSION_FOR_PERL=`echo "$VERSION" | sed 's/-.*//'`
43 AC_SUBST([VERSION_FOR_PERL])
46 dnl PSPP_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
47 dnl Check whether the given C compiler OPTION is accepted.
48 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
49 AC_DEFUN([PSPP_CHECK_CC_OPTION],
51 m4_define([pspp_cv_name], [pspp_cv_[]m4_translit([$1], [-], [_])])dnl
52 AC_CACHE_CHECK([whether $CC accepts $1], [pspp_cv_name],
53 [pspp_save_CFLAGS="$CFLAGS"
55 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [pspp_cv_name[]=yes], [pspp_cv_name[]=no])
56 CFLAGS="$pspp_save_CFLAGS"])
57 if test $pspp_cv_name = yes; then
58 m4_if([$2], [], [;], [$2])
60 m4_if([$3], [], [:], [$3])
64 dnl PSPP_ENABLE_OPTION([OPTION])
65 dnl Check whether the given C compiler OPTION is accepted.
66 dnl If so, add it to CFLAGS.
67 dnl Example: PSPP_ENABLE_OPTION([-Wdeclaration-after-statement])
68 AC_DEFUN([PSPP_ENABLE_OPTION],
69 [PSPP_CHECK_CC_OPTION([$1], [CFLAGS="$CFLAGS $1"])])
71 dnl Check for readline and history libraries.
73 dnl Modified for PSPP, based on readline.m4 serial 3 from
74 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
75 dnl Haible and Oskar Liljeblad.
77 AC_DEFUN([PSPP_READLINE],
79 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
80 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
81 AC_REQUIRE([AC_LIB_RPATH])
83 dnl Search for libreadline and define LIBREADLINE, LTLIBREADLINE and
84 dnl INCREADLINE accordingly.
85 AC_LIB_LINKFLAGS_BODY([readline])
86 AC_LIB_LINKFLAGS_BODY([history])
88 dnl Add $INCREADLINE to CPPFLAGS before performing the following checks,
89 dnl because if the user has installed libreadline and not disabled its use
90 dnl via --without-libreadline-prefix, he wants to use it. The AC_LINK_IFELSE
91 dnl will then succeed.
92 am_save_CPPFLAGS="$CPPFLAGS"
93 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCREADLINE $INCHISTORY])
95 AC_CACHE_CHECK(for readline, gl_cv_lib_readline, [
98 dnl On some systems, -lreadline doesn't link without an additional
99 dnl -lncurses or -ltermcap.
100 dnl Try -lncurses before -ltermcap, because libtermcap is unsecure
101 dnl by design and obsolete since 1994. Try -lcurses last, because
102 dnl libcurses is unusable on some old Unices.
103 for extra_lib in "" ncurses termcap curses; do
104 LIBS="$am_save_LIBS $LIBREADLINE $LIBHISTORY"
105 if test -n "$extra_lib"; then
106 LIBS="$LIBS -l$extra_lib"
108 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
109 #include <readline/readline.h>
110 #include <readline/history.h>]], [[readline((char*)0); add_history((char*)0);]])],[gl_cv_lib_readline=yes],[])
111 if test "$gl_cv_lib_readline" = yes; then
112 if test -n "$extra_lib"; then
113 LIBREADLINE="$LIBREADLINE $LIBHISTORY -l$extra_lib"
114 LTLIBREADLINE="$LTLIBREADLINE $LTLIBHISTORY -l$extra_lib"
122 if test "$gl_cv_lib_readline" = yes; then
123 AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])
124 AC_MSG_CHECKING([how to link with libreadline])
125 AC_MSG_RESULT([$LIBREADLINE])
126 AC_SEARCH_LIBS([rl_outstream], [readline],
127 AC_DEFINE(HAVE_RL_OUTSTREAM, 1, [Define if the readline library provides rl_outstream.]))
128 AC_SEARCH_LIBS([rl_echo_signal_char], [readline],
129 AC_DEFINE(HAVE_RL_ECHO_SIGNAL_CHAR, 1, [Define if the readline library provides rl_echo_signal_char.]))
131 dnl If $LIBREADLINE didn't lead to a usable library, we don't
132 dnl need $INCREADLINE either.
133 CPPFLAGS="$am_save_CPPFLAGS"
138 PSPP_OPTIONAL_PREREQ([libreadline (which may itself require libncurses or libtermcap)])
140 AC_SUBST(LIBREADLINE)
141 AC_SUBST(LTLIBREADLINE)
144 dnl Check for build tools. Adapted from bfd library.
146 AC_DEFUN([PSPP_CC_FOR_BUILD],
147 [# Put a plausible default for CC_FOR_BUILD in Makefile.
148 if test -z "$CC_FOR_BUILD"; then
149 if test "x$cross_compiling" = "xno"; then
155 AC_SUBST(CC_FOR_BUILD)
156 # Also set EXEEXT_FOR_BUILD.
157 if test "x$cross_compiling" = "xno"; then
158 EXEEXT_FOR_BUILD='$(EXEEXT)'
160 AC_CACHE_CHECK([for build system executable suffix], pspp_cv_build_exeext,
162 echo 'int main () { return 0; }' > conftest.c
163 pspp_cv_build_exeext=
164 ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
165 for file in conftest.*; do
167 *.c | *.o | *.obj | *.ilk | *.pdb) ;; # (
168 *) pspp_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
172 test x"${pspp_cv_build_exeext}" = x && pspp_cv_build_exeext=no])
174 test x"${pspp_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${pspp_cv_build_exeex
177 AC_SUBST(EXEEXT_FOR_BUILD)])
179 dnl Check for LC_PAPER, _NL_PAPER_WIDTH, _NL_PAPER_HEIGHT.
180 AC_DEFUN([PSPP_LC_PAPER],
181 [AC_CACHE_CHECK(for LC_PAPER, pspp_cv_lc_paper, [
186 #include <langinfo.h>
188 [(void) LC_PAPER; (void) _NL_PAPER_WIDTH; (void) _NL_PAPER_HEIGHT])],
189 [pspp_cv_lc_paper=yes])
191 if test "$pspp_cv_lc_paper" = yes; then
192 AC_DEFINE(HAVE_LC_PAPER, 1, [Define if you have LC_PAPER.])
197 # PSPP_LINK2_IFELSE(SOURCE1, SOURCE2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
198 # -------------------------------------------------------------
199 # Based on AC_LINK_IFELSE, but tries to link both SOURCE1 and SOURCE2
202 # Test that resulting file is executable; see the problem reported by mwoehlke
203 # in <http://lists.gnu.org/archive/html/bug-coreutils/2006-10/msg00048.html>.
204 # But skip the test when cross-compiling, to prevent problems like the one
205 # reported by Chris Johns in
206 # <http://lists.gnu.org/archive/html/autoconf/2007-03/msg00085.html>.
208 m4_define([PSPP_LINK2_IFELSE],
209 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
210 mv conftest.$ac_ext conftest1.$ac_ext
211 m4_ifvaln([$2], [AC_LANG_CONFTEST([$2])])dnl
212 mv conftest.$ac_ext conftest2.$ac_ext
213 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
214 pspp_link2='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest1.$ac_ext conftest2.$ac_ext $LIBS >&5'
215 AS_IF([_AC_DO_STDERR($pspp_link2) && {
216 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
217 test ! -s conftest.err
218 } && test -s conftest$ac_exeext && {
219 test "$cross_compiling" = yes ||
220 AS_TEST_X([conftest$ac_exeext])
223 [echo "$as_me: failed source file 1 of 2 was:" >&5
224 sed 's/^/| /' conftest1.$ac_ext >&5
225 echo "$as_me: failed source file 2 of 2 was:" >&5
226 sed 's/^/| /' conftest2.$ac_ext >&5
228 dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
229 dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
230 dnl as it would interfere with the next link command.
231 rm -rf conftest.dSYM conftest1.dSYM conftest2.dSYM
232 rm -f core conftest.err conftest1.err conftest2.err
233 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest*_ipa8_conftest*.oo
234 rm -f conftest$ac_exeext
235 rm -f m4_ifval([$1], [conftest1.$ac_ext]) m4_ifval([$2], [conftest1.$ac_ext])[]dnl
236 ])# PSPP_LINK2_IFELSE
238 # GSL uses "extern inline" without determining whether the compiler uses
239 # GCC inline rules or C99 inline rules. If it uses the latter then GSL
240 # will be broken without passing -fgnu89-inline to GCC.
241 AC_DEFUN([PSPP_GSL_NEEDS_FGNU89_INLINE],
242 [# GSL only uses "inline" at all if HAVE_INLINE is defined as a macro.
243 # In turn, gnulib's gl_INLINE is one macro that does that. We need to
244 # make sure that it has run by the time we run this test, otherwise we'll
245 # get a false result.
246 AC_REQUIRE([gl_INLINE])
247 PSPP_CHECK_CC_OPTION(
249 [AC_CACHE_CHECK([whether GSL needs -fgnu89-inline to link],
250 pspp_cv_gsl_needs_fgnu89_inline, [
252 [AC_LANG_PROGRAM([#include <gsl/gsl_math.h>
253 ], [GSL_MAX_INT(1,2);])],
254 [AC_LANG_SOURCE([#include <gsl/gsl_math.h>
256 [pspp_cv_gsl_needs_fgnu89_inline=no],
257 [pspp_cv_gsl_needs_fgnu89_inline=yes])])
258 if test "$pspp_cv_gsl_needs_fgnu89_inline" = "yes"; then
259 CFLAGS="$CFLAGS -fgnu89-inline"
263 AC_DEFUN([PSPP_CHECK_CLICKSEQUENCE],
264 [AC_REQUIRE([AM_INIT_AUTOMAKE]) # Defines MAKEINFO
265 AC_CACHE_CHECK([whether makeinfo supports @clicksequence],
266 [pspp_cv_have_clicksequence],
267 [cat > conftest.texi <<EOF
268 @setfilename conftest.info
269 @clicksequence{File @click{} Open}
271 echo "configure:__oline__: running $MAKEINFO conftest.texi >&AS_MESSAGE_LOG_FD" >&AS_MESSAGE_LOG_FD
272 eval "$MAKEINFO conftest.texi >&AS_MESSAGE_LOG_FD 2>&1"
274 echo "configure:__oline__: \$? = $retval" >&AS_MESSAGE_LOG_FD
275 if test $retval = 0; then
276 pspp_cv_have_clicksequence=yes
278 pspp_cv_have_clicksequence=no
280 rm -f conftest.texi conftest.info])
281 if test $pspp_cv_have_clicksequence = no; then
282 AM_MAKEINFOFLAGS="$AM_MAKEINFOFLAGS -DMISSING_CLICKSEQUENCE"
283 AC_SUBST([AM_MAKEINFOFLAGS])
286 # The following comes from Open vSwitch:
287 # ----------------------------------------------------------------------
288 # Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
290 # Licensed under the Apache License, Version 2.0 (the "License");
291 # you may not use this file except in compliance with the License.
292 # You may obtain a copy of the License at:
294 # http://www.apache.org/licenses/LICENSE-2.0
296 # Unless required by applicable law or agreed to in writing, software
297 # distributed under the License is distributed on an "AS IS" BASIS,
298 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
299 # See the License for the specific language governing permissions and
300 # limitations under the License.
302 dnl PSPP_ENABLE_WERROR
303 AC_DEFUN([PSPP_ENABLE_WERROR],
306 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
307 [], [enable_Werror=no])
308 AC_CONFIG_COMMANDS_PRE(
309 [if test "X$enable_Werror" = Xyes; then
310 CFLAGS="$CFLAGS -Werror"