# tagdemo.at -- C++ Language support.			 -*- Autotest -*-
#
#   Copyright (C) 2003-2005, 2011-2019, 2021-2024 Free Software
#   Foundation, Inc.
#   Written by Gary V. Vaughan, 2003
#
#   This file is part of GNU Libtool.
#
# GNU Libtool 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 2 of
# the License, or (at your option) any later version.
#
# GNU Libtool 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 GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
####


AT_BANNER([C++ language support.])


# _LT_SETUP
# ---------
m4_define([_LT_SETUP],
[LT_AT_TAG([CXX])
AT_KEYWORDS([libtool])

AT_DATA([configure.ac],
[[AC_INIT([tagdemo], ]AT_PACKAGE_VERSION[, ]AT_PACKAGE_BUGREPORT[)
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIRS([m4])
AC_CANONICAL_TARGET
AM_INIT_AUTOMAKE
AC_PROG_CC
AC_PROG_CPP
AC_PROG_CC_C_O
AC_PROG_CXX
AC_PROG_CXXCPP

# Check for namespace support and new-style headers
AC_LANG_PUSH([C++])
AC_MSG_CHECKING([whether the compiler implements namespaces])
AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([[namespace A { namespace B { int i = 0; }}]],
		     [[using namespace A::B; return i;]])],
    [AC_MSG_RESULT([yes])
     AC_DEFINE([HAVE_NAMESPACES],[1],
	       [define if the compiler implements namespaces])],
    [AC_MSG_RESULT([no])])

AC_MSG_CHECKING([whether the compiler has ISO C++ iostream])
AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([[#include <iostream>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif ]], [[cout << "bingo\n"; return 0;]])],
    [AC_MSG_RESULT([yes])
     AC_DEFINE([HAVE_IOSTREAM],[1],
	       [define if the compiler has ISO C++ iostream])],
    [AC_MSG_RESULT([no])])
AC_LANG_POP([C++])

AC_LANG([C++])
LT_INIT

LT_LIB_M
AC_CONFIG_FILES([Makefile])
AC_CONFIG_HEADERS([config.h:config.in.h])
AC_OUTPUT
]])

AT_DATA([Makefile.am],
[[AUTOMAKE_OPTIONS = no-dependencies foreign
ACLOCAL_AMFLAGS = -I m4

noinst_LTLIBRARIES = libconv.la
lib_LTLIBRARIES = libfoo.la libbaz.la

libfoo_la_SOURCES = foo.cpp
libfoo_la_LDFLAGS = -no-undefined
libfoo_la_LIBADD = libconv.la $(LIBM)

# Test some of the ILD support when using tagged configurations.
libbaz_la_SOURCES = baz.cpp
libbaz_la_LDFLAGS = -no-undefined
libbaz_la_LIBADD = libfoo.la

# Test convenience libraries.
libconv_la_SOURCES = conv.cpp
libconv_la_LDFLAGS = -no-undefined

noinst_HEADERS = foo.h baz.h conv.h

bin_PROGRAMS = tagdemo

tagdemo_SOURCES = main.cpp
tagdemo_LDADD = libbaz.la libfoo.la

libtool: $(LIBTOOL_DEPS)
	$(SHELL) ./config.status --recheck
]])

AT_DATA([main.cpp],
[[#include <config.h>
#if HAVE_IOSTREAM
# include <iostream>
#else
# include <iostream.h>
#endif

#include "foo.h"
#include "baz.h"
#include "conv.h"

#if HAVE_NAMESPACES
namespace std { }
using namespace std;
#endif

int main (int, char *[])
{
  cout << "Welcome to GNU libtool tagdemo C++!" << endl;

  foobar_derived FB;
  // Instantiate the derived class.

  foobar *fb = &FB;
  // Have some fun with polymorphism.

  int value = fb->hello();

  cout << "foobar::hello returned: " << value << endl;
  if (value = HELLO_RET)
    cout << "foobar::hello is ok!" << endl;

  if (fb->foo() == FOO_RET)
    cout << "foobar::foo is ok!" << endl;

  // --------------

  barbaz_derived BB;
  // Instantiate the derived class.

  barbaz *bb = &BB;
  // Have some fun with polymorphism.

  // barbaz_derived::baz() should return FOO_RET since it calls
  // foobar_derived::foo(), which in turn calls ::foo().
  if (bb->baz() == FOO_RET)
    cout << "barbaz::baz is ok!" << endl;

  // --------------

  if (convenience())
    cout << "convenience is ok!" << endl;

  return 0;
}
]])

AT_DATA([foo.h],
[[#ifndef FOO_H
#define FOO_H
// Silly constants that the functions return.
#define HELLO_RET 0xe110
#define FOO_RET 0xf00

// Our C test functions.
extern "C"
{
  int foo(void);
  int hello(void);
}

// Our test C++ base class.
class foobar
{
public:
  virtual int foo(void) = 0;
  virtual int hello(void) = 0;
  // Some dummy pure virtual functions.
};


// Our test C++ derived class.
class foobar_derived : public foobar
{
public:
  virtual int foo(void);
  virtual int hello(void);
  // Override the base class' pure virtual functions.
};

#endif
]])

AT_DATA([foo.cpp],
[[#include <config.h>
#ifdef HAVE_IOSTREAM
# include <iostream>
#else
# include <iostream.h>
#endif

#ifdef HAVE_NAMESPACES
namespace std { }
using namespace std;
#endif

#include <math.h>

#include "foo.h"

// Our C functions.
int
foo(void)
{
  cout << "cos (0.0) = " << (double) cos ((double) 0.0) << endl;
  return FOO_RET;
}

int
hello(void)
{
  cout << "** This is libfoo (tagdemo) **" << endl;
  return HELLO_RET;
}


// --------------------------------------------------------------------
// Our C++ derived class methods.


int
foobar_derived::foo(void)
{
  return ::foo();
}

int
foobar_derived::hello(void)
{
  return ::hello();
}
]])

AT_DATA([baz.h],
[[#ifndef BAZ_H
#define BAZ_H 1

// Our test C++ base class.
class barbaz
{
public:
  virtual int baz(void) = 0;
  // Some dummy pure virtual functions.
};

// Our test C++ derived class.
class barbaz_derived : public barbaz
{
public:
  virtual int baz(void);
  // Override the base class' pure virtual functions.
};

#endif
]])

AT_DATA([baz.cpp],
[[#include <config.h>

#include "foo.h"
#include "baz.h"

// --------------------------------------------------------------------
// Our C++ derived class methods.


int
barbaz_derived::baz(void)
{
  foobar_derived FB;

  return FB.foo();
}
]])

AT_DATA([conv.h],
[[#ifndef CONV_H
#define CONV_H

// Our C test functions.
extern "C"
{
  int convenience(void);
}

#endif
]])

AT_DATA([conv.cpp],
[[#include <config.h>

#include "conv.h"

//Our C function.
int convenience (void) { return 1; }
]])

LT_AT_HOST_DATA([expout],
[[Welcome to GNU libtool tagdemo C++!
** This is libfoo (tagdemo) **
foobar::hello returned: 57616
foobar::hello is ok!
cos (0.0) = 1
foobar::foo is ok!
cos (0.0) = 1
barbaz::baz is ok!
convenience is ok!
]])

prefix=`pwd`/_inst
]) # _LT_SETUP


## --------------- ##
## Tagdemo static. ##
## --------------- ##

AT_SETUP([static library])

_LT_SETUP

LT_AT_CHECK_CONFIG([--disable-shared],
                   [^build_old_libs=yes], [^build_libtool_libs=no])
LT_AT_CHECK_EXECUTE([], [./tagdemo])

AT_CLEANUP


## --------------- ##
## Tagdemo shared. ##
## --------------- ##

AT_SETUP([shared library])

_LT_SETUP

LT_AT_CHECK_CONFIG([--disable-static],
                   [^build_old_libs=no], [^build_libtool_libs=yes])
LT_AT_CHECK_EXECUTE([], [./tagdemo])

AT_CLEANUP


## ------------- ##
## Tagdemo conf. ##
## ------------- ##

AT_SETUP([shared and static together])

_LT_SETUP

LT_AT_CHECK_CONFIG([],
                   [^build_old_libs=yes], [^build_libtool_libs=yes])
LT_AT_CHECK_EXECUTE([], [./tagdemo])

AT_CLEANUP


## -------------- ##
## Tagdemo undef. ##
## -------------- ##

AT_SETUP([allow_undefined_flag])

_LT_SETUP

LT_AT_BOOTSTRAP([], [-I m4], [], [--add-missing], [],
                [--disable-static], [ignore])
AT_CHECK([$GREP "^allow_undefined_flag=.\{0,1\}unsupported.\{0,1\}$" libtool && (exit 77)],
          1, [ignore])
$SED 's|allow_undefined=no|allow_undefined=yes|g' libtool > ltnew && mv -f ltnew libtool
LT_AT_CHECK_EXECUTE([], [./tagdemo])


AT_CLEANUP