#							-*- Autotest -*-

AT_BANNER([Low level compiling/preprocessing macros.])

# Copyright (C) 2000-2001, 2003, 2005-2012 Free Software Foundation,

# Inc.

#

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Since the macros which compile are required by most tests, check

# them first.  But remember that looking for a compiler is even more

# primitive, so check those first.

## ------------------------------------- ##

## AC_LANG, AC_LANG_PUSH & AC_LANG_POP.  ##

## ------------------------------------- ##

AT_SETUP([[AC_LANG, AC_LANG_PUSH & AC_LANG_POP]])

AT_DATA([configure.ac],

[[AC_INIT

# C

AC_LANG([C])

# C

AC_LANG_PUSH([C])

# C C

AC_LANG_PUSH([C++])

# C++ C C

AC_LANG([C++])

# C++ C C

AC_LANG_PUSH([Erlang])

# Erlang C++ C C

AC_LANG_PUSH([Fortran 77])

# F77 Erlang C++ C C

AC_LANG_POP([Fortran 77])

# Erlang C++ C C

AC_LANG_POP([Erlang])

# C++ C C

AC_LANG([C++])

# C++ C C

AC_LANG_POP([C++])

# C C

AC_LANG_POP([C])

# C

]])

AT_CHECK_AUTOCONF

AT_CHECK([sed -n 's/^ac_ext=//p' configure], 0,

[c

c

c

cpp

cpp

erl

f

erl

cpp

cpp

c

c

])

AT_CLEANUP

## ---------------------- ##

## AC_REQUIRE & AC_LANG.  ##

## ---------------------- ##

AT_SETUP([AC_REQUIRE & AC_LANG])

AT_DATA([configure.ac],

[[AC_DEFUN([AC_F77_1],

[AC_LANG_PUSH([Fortran 77])

if test $ac_ext != f; then

  AC_MSG_ERROR([F77_1: current shell language is $ac_ext, expected Fortran])

fi

AC_LANG_POP

])

AC_DEFUN([AC_F77_2],

[AC_LANG_PUSH([Fortran 77])

AC_REQUIRE([AC_F77_1])

if test $ac_ext != f; then

  AC_MSG_ERROR([F77_2: current shell language is $ac_ext, expected Fortran])

fi

AC_LANG_POP

])

AC_INIT

AC_F77_2

AS_EXIT(0)

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE

AT_CLEANUP

## ---------------- ##

## AC_LANG_SOURCE.  ##

## ---------------- ##

AT_SETUP([AC_LANG_SOURCE])

AT_DATA([configure.ac],

[[AC_INIT([pkg], [1.0])

AC_PROG_CC

AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#ifndef PACKAGE_NAME

choke me

#endif

int main ()

{

  return 0;

}

]], [], [AC_MSG_FAILURE([confdefs not included])])])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE

AT_CLEANUP

## --------------------- ##

## AC_LANG_SOURCE(C++).  ##

## --------------------- ##

AT_SETUP([AC_LANG_SOURCE(C++)])

AT_DATA([configure.ac],

[[AC_INIT([pkg], [1.0])

AC_PROG_CXX

AC_LANG([C++])

AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#ifndef PACKAGE_NAME

choke me

#endif

int main ()

{

  return 0;

}

]], [], [AC_MSG_FAILURE([confdefs not included])])])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE

AT_CLEANUP

## ------------------------ ##

## AC_LANG_SOURCE example.  ##

## ------------------------ ##

AT_SETUP([AC_LANG_SOURCE example])

# Set CONFIG_SITE to a nonexistent file, so that there are

# no worries about configure output caused by sourcing a config.site.

CONFIG_SITE=no-such-file

export CONFIG_SITE

AT_DATA([configure.ac],

[[# Taken from autoconf.texi:Generating Sources.

# The only change is to not fail if gcc doesn't work.

AC_INIT([Hello], [1.0], [bug-hello@example.org], [],

        [http://www.example.org/])

AC_DEFINE([HELLO_WORLD], ["Hello, World\n"],

  [Greetings string.])

AC_LANG([C])

AC_LANG_CONFTEST(

   [AC_LANG_SOURCE([[const char hw[] = "Hello, World\n";]])])

gcc -E -dD conftest.c || AS_EXIT([77])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE([], [], [stdout])

# Taken from autoconf.texi:Generating Sources.

# Note that the output may contain more defines and lines matching

#   # 1 "conftest.c"

# so delete everything before the interesting output.

AT_CHECK([sed -n 's/ *$//; /#define PACKAGE/,$p' stdout], [],

[[#define PACKAGE_NAME "Hello"

#define PACKAGE_TARNAME "hello"

#define PACKAGE_VERSION "1.0"

#define PACKAGE_STRING "Hello 1.0"

#define PACKAGE_BUGREPORT "bug-hello@example.org"

#define PACKAGE_URL "http://www.example.org/"

#define HELLO_WORLD "Hello, World\n"

const char hw[] = "Hello, World\n";

]])

AT_CLEANUP

## ------------------------- ##

## AC_LANG_PROGRAM example.  ##

## ------------------------- ##

AT_SETUP([AC_LANG_PROGRAM example])

# Set CONFIG_SITE to a nonexistent file, so that there are

# no worries about configure output caused by sourcing a config.site.

CONFIG_SITE=no-such-file

export CONFIG_SITE

AT_DATA([configure.ac],

[[# Taken from autoconf.texi:Generating Sources.

# The only change is to not fail if gcc doesn't work.

AC_INIT([Hello], [1.0], [bug-hello@example.org], [],

        [http://www.example.org/])

AC_DEFINE([HELLO_WORLD], ["Hello, World\n"],

  [Greetings string.])

AC_LANG_CONFTEST(

[AC_LANG_PROGRAM([[const char hw[] = "Hello, World\n";]],

                 [[fputs (hw, stdout);]])])

gcc -E -dD conftest.c || AS_EXIT([77])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE([], [], [stdout])

# Taken from autoconf.texi:Generating Sources.

# Note that the output may contain more defines and lines matching

#   # 1 "conftest.c"

# so delete everything before the interesting output.

AT_CHECK([sed -n 's/ *$//; /#define PACKAGE/,$p' stdout], [],

[[#define PACKAGE_NAME "Hello"

#define PACKAGE_TARNAME "hello"

#define PACKAGE_VERSION "1.0"

#define PACKAGE_STRING "Hello 1.0"

#define PACKAGE_BUGREPORT "bug-hello@example.org"

#define PACKAGE_URL "http://www.example.org/"

#define HELLO_WORLD "Hello, World\n"

const char hw[] = "Hello, World\n";

int

main ()

{

fputs (hw, stdout);

  ;

  return 0;

}

]])

AT_CLEANUP

## ------------------- ##

## AC_COMPILE_IFELSE.  ##

## ------------------- ##

AT_SETUP([AC_COMPILE_IFELSE])

AT_KEYWORDS([AC_LANG_DEFINES_PROVIDED])

AT_DATA([configure.ac],

[[AC_INIT

AC_COMPILE_IFELSE([int main () { return 0; }], [],

  [AC_MSG_ERROR([compiling trivial program failed])])

]])

AT_CHECK_AUTOCONF([], [], [], [stderr])

AT_CHECK([grep 'no AC_LANG_SOURCE call detected in body' stderr], [], [ignore])

AT_CHECK_AUTOCONF([-W no-syntax])

AT_CHECK_CONFIGURE([-q])

AT_DATA([configure.ac],

[[AC_INIT

AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED()int main () { return 0; }], [],

  [AC_MSG_ERROR([compiling trivial program failed])])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE([-q])

AT_DATA([configure.ac],

[[AC_INIT

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [return 0])],

	      [],

	      [AC_MSG_ERROR([compiling `return 0' failed])])

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [return 2])],

	      [],

	      [AC_MSG_ERROR([compiling `return 2' failed])])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE([-q])

AT_CLEANUP

## --------------- ##

## AC_RUN_IFELSE.  ##

## --------------- ##

AT_SETUP([AC_RUN_IFELSE])

AT_KEYWORDS([AC_TRY_RUN])

AT_DATA([configure.ac],

[[AC_INIT

AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 0])],

	      [],

	      [AC_MSG_ERROR([saw `return 0' as a failure])])

AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 2])],

	      [AC_MSG_ERROR([saw `return 2' as a success])],

	      [estatus=$?

test $estatus != 2 &&

  AC_MSG_ERROR([did not get as 2 exit status: $estatus])])

# The old stinky one.

AC_TRY_RUN([int main () { return 3; }],

	   [AC_MSG_ERROR([saw `return 3' as a success])],

	   [estatus=$?

test $estatus != 3 &&

  AC_MSG_ERROR([did not get 3 as exit status: $estatus])])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE([-q])

AT_CLEANUP

## --------------------------  ##

## Order of `rm' and actions.  ##

## --------------------------  ##

AT_SETUP([Order of user actions and cleanup])

AT_DATA([configure.ac],

[[AC_INIT

AC_PROG_CC

AC_PREPROC_IFELSE([AC_LANG_PROGRAM([int grepme;], [])],

		  [{ test -f conftest.err && grep grepme conftest.i; } || AS_EXIT([1])],

		  [AS_EXIT([1])])

AC_PREPROC_IFELSE([AC_LANG_PROGRAM([#define 12 34 /*], [])],

		  [AS_EXIT([1])],

		  [test -f conftest.err || AS_EXIT([1])])

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int ok;], [])],

		  [test -f conftest.$ac_objext || AS_EXIT([1])],

		  [AS_EXIT([1])])

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int bad bad;], [])],

		  [AS_EXIT([1])],

		  [test -f conftest.err || AS_EXIT([1])])

AC_LINK_IFELSE([AC_LANG_PROGRAM([int ok;], [])],

	       [test -f conftest$ac_exeext || AS_EXIT([1])],

	       [AS_EXIT([1])])

AC_LINK_IFELSE([AC_LANG_PROGRAM([int bad bad;], [])],

	       [AS_EXIT([1])],

	       [test -f conftest.err || AS_EXIT([1])])

AC_RUN_IFELSE([AC_LANG_PROGRAM([int ok;], [])],

	      [./conftest$ac_exeext || AS_EXIT([1])],

	      [AS_EXIT([1])])

d@&t@nl conftest.err not generated by AC_RUN_IFELSE?

AC_RUN_IFELSE([AC_LANG_PROGRAM([int bad bad;], [])],

	      [AS_EXIT([1])],

	      [])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE([-q])

AT_CLEANUP

## ------------------ ##

## AC_TRY_LINK_FUNC.  ##

## ------------------ ##

AT_CHECK_MACRO([AC_TRY_LINK_FUNC],

[AC_TRY_LINK_FUNC(printf,,

		  [AC_MSG_ERROR([cannot find `printf'])])

AC_TRY_LINK_FUNC(Be_doomed_if_your_libc_has_a_function_named_like_this,

		 [AC_MSG_ERROR([found a nonexistent function])])])

## -------------------- ##

## Multiple languages.  ##

## -------------------- ##

AT_SETUP([Multiple languages])

# This test should be skipped if the C compiler is a C++ compiler.

AT_DATA([configure.ac],

[[AC_INIT

AC_PROG_CC

AC_COMPILE_IFELSE([

  AC_LANG_PROGRAM([[

    #ifdef __cplusplus

    choke me

    #endif

  ]])], [], AS_EXIT([77]))

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE

# This test should be skipped on systems without a C++ compiler.

AT_DATA([configure.ac],

[[AC_INIT

AC_PROG_CXX

AC_LANG_PUSH([C++])

AC_COMPILE_IFELSE([

  AC_LANG_PROGRAM([[

    #ifndef __cplusplus

    choke me

    #endif

  ]])], [], AS_EXIT([77]))

AC_LANG_POP([C++])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE

AT_DATA([configure.ac],

[[AC_INIT

AC_PROG_CC

AC_PROG_CXX

AC_LANG_PUSH([C])

AC_MSG_CHECKING([a simple C program that is not valid C++])

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([enum a { A, B, C };

				    enum a f(enum a in) { return in++; }], [])],

		  [AC_MSG_RESULT([ok])],

		  [AC_MSG_RESULT([failed])

		   AC_MSG_ERROR([could not compile test program])])

AC_LANG_POP([C])

AC_LANG_PUSH([C++])

AC_MSG_CHECKING([a simple C++ program that is not valid C])

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([class A {};], [])],

		  [AC_MSG_RESULT([ok])],

		  [AC_MSG_RESULT([failed])

		   AC_MSG_ERROR([could not compile test program])])

AC_CHECK_HEADER([cstring])

AC_LANG_POP([C++])

]])

AT_CHECK_AUTOCONF

AT_CHECK_CONFIGURE([-q])

AT_CLEANUP