3 AT_BANNER([Low level compiling/preprocessing macros.])
5 # Copyright (C) 2000, 2001, 2003, 2005, 2006, 2007, 2008, 2009, 2010
6 # Free Software Foundation, Inc.
8 # This program is free software: you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation, either version 3 of the License, or
11 # (at your option) any later version.
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 # Since the macros which compile are required by most tests, check
23 # them first. But remember that looking for a compiler is even more
24 # primitive, so check those first.
27 ## ------------------------------------- ##
28 ## AC_LANG, AC_LANG_PUSH & AC_LANG_POP. ##
29 ## ------------------------------------- ##
31 AT_SETUP([[AC_LANG, AC_LANG_PUSH & AC_LANG_POP]])
33 AT_DATA([configure.ac],
44 AC_LANG_PUSH([Erlang])
46 AC_LANG_PUSH([Fortran 77])
48 AC_LANG_POP([Fortran 77])
61 AT_CHECK([sed -n 's/^ac_ext=//p' configure], 0,
79 ## ---------------------- ##
80 ## AC_REQUIRE & AC_LANG. ##
81 ## ---------------------- ##
83 AT_SETUP([AC_REQUIRE & AC_LANG])
85 AT_DATA([configure.ac],
86 [[AC_DEFUN([AC_F77_1],
87 [AC_LANG_PUSH([Fortran 77])
88 if test $ac_ext != f; then
89 AC_MSG_ERROR([F77_1: current shell language is $ac_ext, expected Fortran])
96 [AC_LANG_PUSH([Fortran 77])
97 AC_REQUIRE([AC_F77_1])
98 if test $ac_ext != f; then
99 AC_MSG_ERROR([F77_2: current shell language is $ac_ext, expected Fortran])
115 ## ---------------- ##
116 ## AC_LANG_SOURCE. ##
117 ## ---------------- ##
119 AT_SETUP([AC_LANG_SOURCE])
121 AT_DATA([configure.ac],
122 [[AC_INIT([pkg], [1.0])
124 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#ifndef PACKAGE_NAME
131 ]], [], [AC_MSG_FAILURE([confdefs not included])])])
140 ## --------------------- ##
141 ## AC_LANG_SOURCE(C++). ##
142 ## --------------------- ##
144 AT_SETUP([AC_LANG_SOURCE(C++)])
146 AT_DATA([configure.ac],
147 [[AC_INIT([pkg], [1.0])
150 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#ifndef PACKAGE_NAME
157 ]], [], [AC_MSG_FAILURE([confdefs not included])])])
166 ## ------------------------ ##
167 ## AC_LANG_SOURCE example. ##
168 ## ------------------------ ##
170 AT_SETUP([AC_LANG_SOURCE example])
172 # Set CONFIG_SITE to a nonexistent file, so that there are
173 # no worries about configure output caused by sourcing a config.site.
174 CONFIG_SITE=no-such-file
177 AT_DATA([configure.ac],
178 [[# Taken from autoconf.texi:Generating Sources.
179 # The only change is to not fail if gcc doesn't work.
180 AC_INIT([Hello], [1.0], [bug-hello@example.org], [],
181 [http://www.example.org/])
182 AC_DEFINE([HELLO_WORLD], ["Hello, World\n"],
186 [AC_LANG_SOURCE([[const char hw[] = "Hello, World\n";]])])
187 gcc -E -dD conftest.c || AS_EXIT([77])
191 AT_CHECK_CONFIGURE([], [], [stdout])
192 # Taken from autoconf.texi:Generating Sources.
193 # Note that the output may contain more than one line matching
195 # so delete everything until the last one.
196 AT_CHECK([sed '1,/# 1 "conftest\.c"/d' stdout], [],
198 #define PACKAGE_NAME "Hello"
199 #define PACKAGE_TARNAME "hello"
200 #define PACKAGE_VERSION "1.0"
201 #define PACKAGE_STRING "Hello 1.0"
202 #define PACKAGE_BUGREPORT "bug-hello@example.org"
203 #define PACKAGE_URL "http://www.example.org/"
204 #define HELLO_WORLD "Hello, World\n"
206 const char hw[] = "Hello, World\n";
212 ## ------------------------- ##
213 ## AC_LANG_PROGRAM example. ##
214 ## ------------------------- ##
216 AT_SETUP([AC_LANG_PROGRAM example])
218 # Set CONFIG_SITE to a nonexistent file, so that there are
219 # no worries about configure output caused by sourcing a config.site.
220 CONFIG_SITE=no-such-file
223 AT_DATA([configure.ac],
224 [[# Taken from autoconf.texi:Generating Sources.
225 # The only change is to not fail if gcc doesn't work.
226 AC_INIT([Hello], [1.0], [bug-hello@example.org], [],
227 [http://www.example.org/])
228 AC_DEFINE([HELLO_WORLD], ["Hello, World\n"],
231 [AC_LANG_PROGRAM([[const char hw[] = "Hello, World\n";]],
232 [[fputs (hw, stdout);]])])
233 gcc -E -dD conftest.c || AS_EXIT([77])
237 AT_CHECK_CONFIGURE([], [], [stdout])
238 # Taken from autoconf.texi:Generating Sources.
239 # Note that the output may contain more than one line matching
241 # so delete everything until the last one.
242 AT_CHECK([sed '1,/# 1 "conftest\.c"/d' stdout], [],
244 #define PACKAGE_NAME "Hello"
245 #define PACKAGE_TARNAME "hello"
246 #define PACKAGE_VERSION "1.0"
247 #define PACKAGE_STRING "Hello 1.0"
248 #define PACKAGE_BUGREPORT "bug-hello@example.org"
249 #define PACKAGE_URL "http://www.example.org/"
250 #define HELLO_WORLD "Hello, World\n"
252 const char hw[] = "Hello, World\n";
265 ## --------------- ##
267 ## --------------- ##
269 AT_SETUP([AC_RUN_IFELSE])
271 AT_DATA([configure.ac],
274 AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 0])],
276 [AC_MSG_ERROR([saw `return 0' as a failure])])
278 AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 2])],
279 [AC_MSG_ERROR([saw `return 2' as a success])],
281 test $estatus != 2 &&
282 AC_MSG_ERROR([did not get as 2 exit status: $estatus])])
284 # The old stinky one.
285 AC_TRY_RUN([int main () { return 3; }],
286 [AC_MSG_ERROR([saw `return 3' as a success])],
288 test $estatus != 3 &&
289 AC_MSG_ERROR([did not get 3 as exit status: $estatus])])
294 AT_CHECK_CONFIGURE([-q])
298 ## -------------------------- ##
299 ## Order of `rm' and actions. ##
300 ## -------------------------- ##
302 AT_SETUP([Order of user actions and cleanup])
303 AT_DATA([configure.ac],
307 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([int grepme;], [])],
308 [{ test -f conftest.err && grep grepme conftest.i; } || AS_EXIT([1])],
310 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([#define 12 34 /*], [])],
312 [test -f conftest.err || AS_EXIT([1])])
314 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int ok;], [])],
315 [test -f conftest.$ac_objext || AS_EXIT([1])],
317 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int bad bad;], [])],
319 [test -f conftest.err || AS_EXIT([1])])
321 AC_LINK_IFELSE([AC_LANG_PROGRAM([int ok;], [])],
322 [test -f conftest$ac_exeext || AS_EXIT([1])],
324 AC_LINK_IFELSE([AC_LANG_PROGRAM([int bad bad;], [])],
326 [test -f conftest.err || AS_EXIT([1])])
328 AC_RUN_IFELSE([AC_LANG_PROGRAM([int ok;], [])],
329 [./conftest$ac_exeext || AS_EXIT([1])],
332 d@&t@nl conftest.err not generated by AC_RUN_IFELSE?
333 AC_RUN_IFELSE([AC_LANG_PROGRAM([int bad bad;], [])],
339 AT_CHECK_CONFIGURE([-q])
344 ## ------------------ ##
345 ## AC_TRY_LINK_FUNC. ##
346 ## ------------------ ##
348 AT_CHECK_MACRO([AC_TRY_LINK_FUNC],
349 [AC_TRY_LINK_FUNC(printf,,
350 [AC_MSG_ERROR([cannot find `printf'])])
351 AC_TRY_LINK_FUNC(Be_doomed_if_your_libc_has_a_function_named_like_this,
352 [AC_MSG_ERROR([found a nonexistent function])])])
354 ## -------------------- ##
355 ## Multiple languages. ##
356 ## -------------------- ##
358 AT_SETUP([Multiple languages])
360 # This test should be skipped if the C compiler is a C++ compiler.
361 AT_DATA([configure.ac],
370 ]])], [], AS_EXIT([77]))
376 # This test should be skipped on systems without a C++ compiler.
377 AT_DATA([configure.ac],
387 ]])], [], AS_EXIT([77]))
394 AT_DATA([configure.ac],
401 AC_MSG_CHECKING([a simple C program that is not valid C++])
402 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([enum a { A, B, C };
403 enum a f(enum a in) { return in++; }], [])],
404 [AC_MSG_RESULT([ok])],
405 [AC_MSG_RESULT([failed])
406 AC_MSG_ERROR([could not compile test program])])
410 AC_MSG_CHECKING([a simple C++ program that is not valid C])
411 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([class A {};], [])],
412 [AC_MSG_RESULT([ok])],
413 [AC_MSG_RESULT([failed])
414 AC_MSG_ERROR([could not compile test program])])
416 AC_CHECK_HEADER([cstring])
421 AT_CHECK_CONFIGURE([-q])