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a71c24a704
* doc/autoconf.texi (Function Portability): Mention that C++ has trouble with 'exit'. (Guidelines): Test programs shouldn't use 'exit'. * lib/autoconf/c.m4 (_AC_PROG_CXX_EXIT_DECLARATION): Remove; all uses removed. (AC_LANG_INT_SAVE(C), AC_C_BIGENDIAN): Return from 'main' instead of calling 'exit'. * lib/autoconf/functions.m4 (_AC_LIBOBJ_ALLOCA, AC_FUNC_CLOSEDIR_VOID): (_AC_FUNC_FNMATCH_IF, AC_FUNC_GETGROUPS): (AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK, _AC_FUNC_MALLOC_IF): (AC_FUNC_MEMCMP, AC_FUNC_MKTIME, AC_FUNC_MMAP, _AC_FUNC_REALLOC_IF): (AC_FUNC_SETPGRP, _AC_FUNC_STAT, AC_FUNC_STRTOD, AC_FUNC_STRERROR_R): (AC_FUNC_STRNLEN, AC_FUNC_SETVBUF_REVERSED, AC_FUNC_UTIME_NULL): (_AC_FUNC_FORK, _AC_FUNC_VFORK, AC_FUNC_WAIT3): Likewise. * lib/autoconf/headers.m4 (AC_HEADER_STDC): Likewise. * lib/autoconf/specific.m4 (AC_SYS_RESTARTABLE_SYSCALLS): Likewise. * lib/autoconf/types.m4 (AC_TYPE_GETGROUPS): Likewise. * tests/compile.at: Likewsie.
152 lines
3.1 KiB
Plaintext
152 lines
3.1 KiB
Plaintext
# -*- Autotest -*-
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AT_BANNER([Low level compiling/preprocessing macros.])
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# Copyright (C) 2000, 2001, 2003, 2005, 2006 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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# Since the macros which compile are required by most tests, check
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# them first. But remember that looking for a compiler is even more
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# primitive, so check those first.
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## ------------------------------------- ##
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## AC_LANG, AC_LANG_PUSH & AC_LANG_POP. ##
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## ------------------------------------- ##
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AT_SETUP([AC_LANG, AC_LANG_PUSH & AC_LANG_POP])
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AT_DATA([configure.ac],
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[[AC_INIT
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# C
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AC_LANG(C)
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# C
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AC_LANG_PUSH(C)
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# C C
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AC_LANG_PUSH(C++)
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# C++ C C
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AC_LANG(C++)
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# C++ C C
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AC_LANG_PUSH(Fortran 77)
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# F77 C++ C C
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AC_LANG_POP(Fortran 77)
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# C++ C C
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AC_LANG(C++)
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# C++ C C
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AC_LANG_POP(C++)
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# C C
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AC_LANG_POP(C)
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# C
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]])
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AT_CHECK_AUTOCONF
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AT_CHECK([sed -n 's/^ac_ext=//p' configure], 0,
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[c
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c
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c
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cpp
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cpp
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f
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cpp
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cpp
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c
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c
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])
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AT_CLEANUP
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## ---------------------- ##
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## AC_REQUIRE & AC_LANG. ##
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## ---------------------- ##
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AT_SETUP([AC_REQUIRE & AC_LANG])
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AT_DATA([configure.ac],
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[[AC_DEFUN([AC_F77_1],
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[AC_LANG_PUSH([Fortran 77])
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if test $ac_ext != f; then
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AC_MSG_ERROR([F77_1: current shell language is $ac_ext, expected Fortran])
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fi
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AC_LANG_POP
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])
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AC_DEFUN([AC_F77_2],
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[AC_LANG_PUSH([Fortran 77])
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AC_REQUIRE([AC_F77_1])
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if test $ac_ext != f; then
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AC_MSG_ERROR([F77_2: current shell language is $ac_ext, expected Fortran])
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fi
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AC_LANG_POP
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])
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AC_INIT
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AC_F77_2
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AS_EXIT(0)
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]])
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AT_CHECK_AUTOCONF
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AT_CHECK_CONFIGURE
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AT_CLEANUP
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## --------------- ##
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## AC_RUN_IFELSE. ##
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## --------------- ##
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AT_SETUP([AC_RUN_IFELSE])
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AT_DATA([configure.ac],
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[[AC_INIT
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AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 0])],
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[],
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[AC_MSG_ERROR([saw `return 0' as a failure])])
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AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 2])],
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[AC_MSG_ERROR([saw `return 2' as a success])],
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[status=$?
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test $status != 2 &&
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AC_MSG_ERROR([did not get as 2 exit status: $status])])
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# The old stinky one.
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AC_TRY_RUN([int main () { return 3; }],
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[AC_MSG_ERROR([saw `return 3' as a success])],
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[status=$?
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test $status != 3 &&
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AC_MSG_ERROR([did not get 3 as exit status: $status])])
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]])
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AT_CHECK_AUTOCONF
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AT_CHECK_CONFIGURE([-q])
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AT_CLEANUP
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## ------------------ ##
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## AC_TRY_LINK_FUNC. ##
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## ------------------ ##
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AT_CHECK_MACRO([AC_TRY_LINK_FUNC],
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[AC_TRY_LINK_FUNC(printf,,
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[AC_MSG_ERROR([cannot find `printf'])])
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AC_TRY_LINK_FUNC(Be_doomed_if_your_libc_has_a_function_named_like_this,
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[AC_MSG_ERROR([found a nonexistent function])])])
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