lyx_mirror/sigc++/configure.in

## (C) 1998 Stephan Kulow
## Modified by Tero Pulkkinen
## Modified by Karl Nelson
## Modified by makeLyXsigc.sh (Allan Rae)

AC_INIT(slot.cc)

AC_DEFUN(LYX_FIX_MAKEFILE_IN,[
## modify Makefile.in if need be -- since we still use automake
for dir in $srcdir $srcdir/macros ; do
( cd $dir ;
  sed < Makefile.in > Makefile_tmp \
        -e 's/all: all-redirect/all: all-@USE_INCLUDED_SIGC@\
all-yes: all-redirect\
all-no:/' ;
  mv Makefile_tmp Makefile.in )
done
])

LYX_FIX_MAKEFILE_IN

define(AC_PUSH_LIB,[dnl
ifdef([__LIB__],,[define([__LIB__],0)])dnl
ac_save_LIBS[]__LIB__="$LIBS"
define([__LIB__],builtin(eval,(__LIB__ + 1)))dnl
LIBS="$1"])
define(AC_POP_LIB,[dnl
define([__LIB__],builtin(eval,(__LIB__ - 1)))dnl
LIBS="$ac_save_LIBS[]__LIB__"])


dnl
dnl Source packaging numbers
SIGC_MAJOR_VERSION=1
SIGC_MINOR_VERSION=0
SIGC_MICRO_VERSION=3

dnl Library extension
SIGC_RELEASE=1.0

SIGC_VERSION=$SIGC_MAJOR_VERSION.$SIGC_MINOR_VERSION.$SIGC_MICRO_VERSION

#
# +1 : ? : +1  == new interface that does not break old one
# +1 : ? : 0   == new interface that breaks old one
#  ? : ? : 0   == no new interfaces, but breaks apps
#  ? :+1 : ?   == just some internal changes, nothing breaks but might work 
#                 better
# CURRENT : REVISION : AGE
LIBSIGC_SO_VERSION=0:0:0
AC_SUBST(LIBSIGC_SO_VERSION, $LIBSIGC_SO_VERSION)

AC_SUBST(SIGC_RELEASE, $SIGC_RELEASE)
AC_SUBST(SIGC_VERSION)

AC_DEFINE_UNQUOTED(SIGC_MAJOR_VERSION, $SIGC_MAJOR_VERSION)
AC_DEFINE_UNQUOTED(SIGC_MINOR_VERSION, $SIGC_MINOR_VERSION)
AC_DEFINE_UNQUOTED(SIGC_MICRO_VERSION, $SIGC_MICRO_VERSION)

AC_CONFIG_AUX_DIR(../config)

dnl For automake.
VERSION=$SIGC_VERSION
PACKAGE=libsigc++

dnl Initialize automake stuff
AM_INIT_AUTOMAKE($PACKAGE, $VERSION)

dnl Specify a configuration file
AM_CONFIG_HEADER(sigc++config.h)

AC_ARG_WITH([included-libsigc],
  [  --without-included-libsigc
                             Use the libsigc++ installed on the system
                             Used when libsigc++ is bundled with applications],
  [sigc_use_included_libsigc=$withval],
  [sigc_use_included_libsigc=yes])
if test x$sigc_use_included_libsigc = xno; then
  ## just change the setting for the Makefile
  USE_INCLUDED_SIGC=no
  AC_SUBST(USE_INCLUDED_SIGC)
else
###
### This else..fi goes till the end of the file!
###
  USE_INCLUDED_SIGC=yes
  AC_SUBST(USE_INCLUDED_SIGC)

AC_ARG_ENABLE(threads,
[  --enable-threads       enables support threading.],
enable_threads=$enableval,enable_threads="no")
AC_ARG_ENABLE(checks,
[  --disable-checks        disables unnecessary tests needed for bug reports.],
enable_checks=$enableval,enable_checks="yes"
)

AC_PROG_CC
AC_PROG_CPP


AM_DISABLE_SHARED

dnl Instruct build of dll for cygwin (libtool 1.3)
dnl   Exports screw up badly on libtool 1.3, backing off to 1.2f
dnl A C_LIBTOOL_WIN32_DLL  

dnl libtool does all checks with $CC, not with $CXX
dnl maybe this should be fixed in libtool, not here
AM_PROG_LIBTOOL

dnl On FreeBSD 3.0 (and perhaps some other systems) GNU m4 is
dnl called `gm4' where `m4' is the system's own m4.
AC_CHECK_PROGS(M4, gm4 m4, m4)

AC_PROG_CXX
AC_LANG_CPLUSPLUS

dnl Checking if linker supports global constructors
dnl This is largely information for me if someone files a bug report
if test "X$enable_checks" = "Xyes"; then
AC_MSG_CHECKING([if linker supports global constructors])
cat > mylib.$ac_ext <<EOF
#include <stdio.h>

struct A
  {A() {printf("PASS\n");}
  };

A a;

int foo()
  {return 1;}

EOF
cat > mytest.$ac_ext <<EOF
#include <stdio.h>

extern int foo();

int main(int argc,char **argv)
  {
   int i=foo();
   if (i!=1) printf("FAIL\n");
  }

EOF
sh libtool --mode=compile $CXX -c mylib.$ac_ext >&5
sh libtool --mode=link $CXX -o libtest.la -rpath / -version-info 0 mylib.lo  >&5
$CXX -c $CFLAGS $CPPFLAGS mytest.$ac_ext >&5
sh libtool --mode=link $CXX -o mytest mytest.o libtest.la >&5 2>/dev/null
if test -x mytest; then
myresult=`./mytest`
if test "X$myresult" = "XPASS"; then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
AC_MSG_WARN([
===================================================================
WARNING: This platform lacks support of construction of global 
objects in shared librarys.  Although not required by this library, 
this is a serious problem for building C++ libraries.  You will not 
be able to use any shared libraries that contain global objects with 
contructors.

See ftp://rtfm.mit.edu/pub/usenet/news.answers/g++-FAQ/plain
for details about this problem.  Also for possible solutions
http://www.informatik.uni-frankfurt.de/~fp/Tcl/tcl-c++/tcl-c++.html
===================================================================
])
fi
else
AC_MSG_RESULT(unknown)
fi
rm -f mylib.* mytest.* libtest.la .libs/libtest* mytest .libs/mytest >&5
fi

AC_MSG_CHECKING(if C++ compiler uses std namespace )
AC_TRY_COMPILE(
[
#include <iostream>
namespace std{ void kludge(); }
using namespace std;
],[
cout << "test" << endl;
],[
 ac_std_namespace=yes
 AC_MSG_RESULT([yes])
],[
 ac_std_namespace=maybe
])
if test "x$ac_std_namespace" = xmaybe ; then
AC_TRY_COMPILE(
[
#include <iostream.h>
namespace std{ void kludge(); }
using namespace std;
],[
cout << "test" << endl;
],[
 ac_std_namespace=yes
 AC_MSG_RESULT([yes])
 AC_MSG_WARN([
===================================================================
WARNING: This compiler platform does not have the iostream library
in the std namespace.  This presents a problem for writing portable
STL code.  To run the demos, you will need to place a file with the
following in a file called "iostream" in your include directory.

---------------------------iostream--------------------------------
#ifndef IOSTREAM_KLUDGE
#define IOSTREAM_KLUDGE
#include <iostream.h>
namespace std { void iostream_kludge(); };
#endif
===================================================================
])
],[
 ac_std_namespace=no
 AC_MSG_RESULT([no])
 AC_MSG_WARN([
===================================================================
WARNING: This compiler platform does not support iostream 
or namespaces.  You will not be able to run the demos as they
use STL.  This does not affect use of the library, only the demos.
===================================================================
])
])
fi



dnl
dnl C++ compiler feature check start here

AC_MSG_CHECKING(if C++ compiler supports bool (required))
AC_TRY_COMPILE(
[
],[
   bool b=true;
   bool b1=false;
],[
  ac_bool=yes
  AC_MSG_RESULT([$ac_bool])
],[
  config_error=yes
  AC_MSG_RESULT([$ac_bool])
  AC_WARN(bool type is not supported by your compiler)
]) 

AC_MSG_CHECKING([if C++ compiler supports const_cast<> (required)])
AC_TRY_COMPILE(
[
   class foo;
],[
   const foo *c=0;
   foo *c1=const_cast<foo*>(c);
],[
  ac_const_cast=yes
  AC_MSG_RESULT([$ac_const_cast])
],[
  AC_MSG_RESULT([$ac_const_cast])
  AC_WARN(C++ compiler const_cast<> does not work)
  config_error=yes
]) 

# Member function templates
AC_MSG_CHECKING(if C++ compiler supports member function templates)
AC_TRY_COMPILE(
[
class foo
{
public:
  template <class T> void method(T t);
};

template <class T> void foo::method(T t) {t = 0;}
],[
],[
   ac_member_func_templates=yes
   AC_DEFINE(SIGC_CXX_MEMBER_FUNC_TEMPLATES)
   AC_MSG_RESULT([$ac_member_func_templates])
],[
  ac_member_func_templates=no
  AC_MSG_RESULT([$ac_member_func_templates])
  config_error=yes
  AC_MSG_WARN([Test for member templates failed. This disables some methods that requires member template support. If your compiler should support member templates, see config.log to figure out why the test failed.])
])



# Member class templates
AC_MSG_CHECKING(if C++ compiler supports member class templates)
AC_TRY_COMPILE(
[
struct S
{
  template <class T> struct A {};
  template <class T> struct B {};
};
],[
],[
   ac_member_class_templates=yes
   AC_DEFINE(SIGC_CXX_MEMBER_CLASS_TEMPLATES)
   AC_MSG_RESULT([$ac_member_class_templates])
],[
  ac_member_class_templates=no
  AC_MSG_RESULT([$ac_member_class_templates])
  AC_MSG_WARN([Test for member templates failed. This disables some methods that requires member template support. If your compiler should support member templates, see config.log to figure out why the test failed.])
])



# Mutable
AC_MSG_CHECKING(if C++ compiler supports mutable)
AC_TRY_COMPILE(
[
class k { 	
	mutable char *c;
public:
   void foo() const { c=0; }
};
],[
],[
  ac_cxx_mutable=yes
  AC_DEFINE(SIGC_CXX_MUTABLE)
],[
  ac_cxx_mutable=no
]) 
AC_MSG_RESULT([$ac_cxx_mutable])


# Partial Specialization
AC_MSG_CHECKING([if C++ compiler supports partial specialization(required)])
AC_TRY_COMPILE(
[
template<class T, class K>
class k { 	
public:
};
template<class T> class k<void,T> { };
],[
  k<float, float> b;
  k<void,void> a;
],[
  ac_cxx_partial_specialization=yes
  AC_MSG_RESULT([$ac_cxx_partial_specialization])
  AC_DEFINE(SIGC_CXX_PARTIAL_SPEC)
],[
  config_error=yes
  ac_cxx_partial_specialization=no
  AC_MSG_RESULT([$ac_cxx_partial_specialization])
  AC_MSG_WARN([Partial specialization is needed for signal templates.])
]) 


AC_MSG_CHECKING(if C++ compiler supports name spaces)
AC_TRY_COMPILE(
[
namespace Check
  {
   int i;
  }
],[
  Check::i=1;
],[
  ac_cxx_namespaces=yes
  AC_MSG_RESULT([$ac_cxx_namespaces])
  AC_DEFINE(SIGC_CXX_NAMESPACES)
],[
  ac_cxx_namespaces=no
  AC_MSG_RESULT([$ac_cxx_namespaces])
  AC_MSG_WARN([Without namespaces all classes will be global.])
]) 


AC_MSG_CHECKING(if C++ compiler supports friend template)
AC_TRY_COMPILE(
[
struct A
  {
   template <class T>
     friend T* gen();
  };
],[
],[
  ac_cxx_friend_templates=yes
  AC_MSG_RESULT([$ac_cxx_friend_templates])
  AC_DEFINE(SIGC_CXX_FRIEND_TEMPLATES)
],[
  ac_cxx_friend_templates=no
  AC_MSG_RESULT([$ac_cxx_friend_templates])
  AC_MSG_WARN([Access to dynamic will not be controlled.])
]) 


AC_MSG_CHECKING(if C++ compiler has intrinsic constructors)
AC_TRY_COMPILE(
[
template<class T>
  struct A
    { T t;
     A(): t() {}
    };

A<int> i;
],[
],[
  AC_DEFINE(SIGC_CXX_INT_CTOR)
  ac_cxx_tmpl_intctor=yes
],[
  ac_cxx_tmpl_intctor=no
])
AC_MSG_RESULT([$ac_cxx_tmpl_intctor])


AC_MSG_CHECKING(if C++ compiler uses template copy ctor)
AC_TRY_COMPILE(
[
template <class T>
struct A
  {
   A(const A&) {}
   template <class T1>
   A(const T1&) {}  
  };
],[
],[
  ac_cxx_template_cctor=no
],[
  AC_DEFINE(SIGC_CXX_TEMPLATE_CCTOR)
  ac_cxx_template_cctor=yes
])
AC_MSG_RESULT([$ac_cxx_template_cctor])


AC_MSG_CHECKING(if C++ compiler allows void returns)
AC_TRY_COMPILE(
[

void g(int *p)
  {}

void h(int *p)
  {return g(p);}

],[
],[
  ac_cxx_void_return=yes
  AC_DEFINE(SIGC_CXX_VOID_RETURN)
],[
  ac_cxx_void_return=no
])
AC_MSG_RESULT([$ac_cxx_void_return])


AC_MSG_CHECKING(if C++ compiler allows specialization of references)
AC_TRY_COMPILE(
[
struct A {};
struct B {};

template <class T>
struct P
  {
   typedef A* ptr;
  };

template <class T>
struct P<T&>
  {
   typedef B* ptr;
  };

],[
    A* a;
    B* b;
    P<int>::ptr p=a;
    P<int&>::ptr q=b;
],[
  ac_cxx_specialize_references=yes
  AC_DEFINE(SIGC_CXX_SPECIALIZE_REFERENCES)
],[
  ac_cxx_specialize_references=no
])
AC_MSG_RESULT([$ac_cxx_specialize_references])


dnl unused at the moment, disabled
dnl mirko, 99/1/15
dnl AC_MSG_CHECKING(if C++ compiler supports qualification of return types with templates)
dnl AC_TRY_COMPILE(
dnl [
dnl template<class T>
dnl class foo {
dnl public:
dnl   typedef int iterator;
dnl   iterator begin();
dnl };
dnl template<class T> foo<T>::iterator foo<T>::begin() { }
dnl ],[
dnl   foo<int> f;
dnl   f.begin();
dnl ],[
dnl   ac_template_qualification=yes
dnl ],[
dnl   AC_DEFINE(SIGC_CXX_NO_TEMPLATE_QUALIFICATION)
dnl   ac_template_qualification=no
dnl ]) 
dnl AC_MSG_RESULT([$ac_template_qualification])

dnl unused at the moment, disabled
dnl mirko, 99/1/15
dnl AC_MSG_CHECKING(if C++ compiler supports static data inside templates)
dnl AC_TRY_LINK(
dnl [
dnl template<class T>
dnl class foo { public: static T a; };
dnl template<class T>
dnl static T foo<T>::a=0;
dnl ],[
dnl   foo<int> b;
dnl ],[
dnl   ac_static_templates=yes
dnl ],[
dnl   AC_DEFINE(SIGC_CXX_NO_STATIC_TEMPLATES)
dnl   ac_static_templates=no
dnl ]) 
dnl AC_MSG_RESULT([$ac_static_templates])

AC_MSG_CHECKING(if C++ environment provides all required features)
if test "x$config_error" = xyes ; then
  AC_MSG_RESULT([no])
  AC_MSG_ERROR([Your compiler is not powerful enough to compile libsigc++. If it should be, see config.log for more information of why it failed.])
fi
AC_MSG_RESULT([yes])

dnl
dnl PTHREADS
dnl
AC_CHECK_HEADER(pthread.h,,[enable_threads="no"])
if test "x$enable_threads" = "xyes" ; then
enable_threads="no"
AC_CHECK_LIB(pthread,pthread_self,[enable_threads="yes";THREAD_LIB="-lpthread"])
AC_CHECK_LIB(cma,pthread_self,[enable_threads="yes";THREAD_LIB="-lcma"])
AC_PUSH_LIB($THREAD_LIB)
AC_CHECK_FUNC(pthread_keycreate,[AC_DEFINE(SIGC_PTHREAD_DCE)])
AC_POP_LIB()
AC_SUBST(THREAD_LIB)
fi

AC_MSG_CHECKING(if should compile with pthreads)
if test "x$enable_threads" = "xyes" ; then
AC_DEFINE(SIGC_PTHREADS)
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([sizes of threading elements])

# Check for size of threading elements so that we don't expose
# the implementation
AC_TRY_RUN([

#include <stdio.h>
#include <pthread.h>

#ifdef SIGC_PTHREAD_DCE
typedef pthread_condattr_t CondAttr;
typedef pthread_mutexattr_t MutexAttr;
typedef pthread_attr_t ThreadAttr;
#else
typedef pthread_condattr_t*  CondAttr;
typedef pthread_mutexattr_t* MutexAttr;
typedef pthread_attr_t*      ThreadAttr;
#endif
typedef pthread_mutex_t      MutexImpl;
typedef pthread_cond_t       CondImpl;
typedef pthread_key_t        KeyImpl;
typedef pthread_t            ThreadImpl;

int main()
  {
    FILE *fptr;
    fptr=fopen("ac_thread.sh","w");
    fprintf(fptr,"ac_thread_cond_attr_size=%d\n",sizeof(CondAttr));
    fprintf(fptr,"ac_thread_cond_impl_size=%d\n",sizeof(CondImpl));
    fprintf(fptr,"ac_thread_mutex_attr_size=%d\n",sizeof(MutexAttr));
    fprintf(fptr,"ac_thread_mutex_impl_size=%d\n",sizeof(MutexImpl));
    fprintf(fptr,"ac_thread_thread_attr_size=%d\n",sizeof(ThreadAttr));
    fprintf(fptr,"ac_thread_thread_impl_size=%d\n",sizeof(ThreadImpl));
    fprintf(fptr,"ac_thread_key_impl_size=%d\n",sizeof(KeyImpl));
    return 0;
  }
],[
 . ./ac_thread.sh
 rm ac_thread.sh
AC_MSG_RESULT(found)
],[
AC_MSG_RESULT(failed)
 AC_ERROR(
[Could not compile a program with threads, please see config.log for details.
])
],
[
AC_MSG_RESULT(cross)
  if test ! -f ac_thread.h; then
    echo '
ac_thread_cond_attr_size=
ac_thread_cond_impl_size=
ac_thread_mutex_attr_size=
ac_thread_mutex_impl_size=
ac_thread_thread_attr_size=
ac_thread_thread_impl_size=
ac_thread_key_impl_size=
' > ./ac_thread.sh
   AC_MSG_ERROR(
[You are attempting a cross compile, but the necessary information regarding
your thread library is not available.  Please fill out the ac_thread.sh file.
])
  else
    . ./ac_thread.sh
  fi
])
  AC_DEFINE_UNQUOTED(SIGC_PTHREAD_COND_ATTR,$ac_thread_cond_attr_size)
  AC_DEFINE_UNQUOTED(SIGC_PTHREAD_COND_IMPL,$ac_thread_cond_impl_size)
  AC_DEFINE_UNQUOTED(SIGC_PTHREAD_MUTEX_ATTR,$ac_thread_mutex_attr_size)
  AC_DEFINE_UNQUOTED(SIGC_PTHREAD_MUTEX_IMPL,$ac_thread_mutex_impl_size)
  AC_DEFINE_UNQUOTED(SIGC_PTHREAD_THREAD_ATTR,$ac_thread_thread_attr_size)
  AC_DEFINE_UNQUOTED(SIGC_PTHREAD_THREAD_IMPL,$ac_thread_thread_impl_size)
  AC_DEFINE_UNQUOTED(SIGC_PTHREAD_KEY_IMPL,$ac_thread_key_impl_size)
else
AC_MSG_RESULT([no])
fi


###
### This is the end of the massive if..then..else..fi
###
fi

AC_OUTPUT([Makefile 
        sigc-config
        macros/Makefile  
],[chmod a+x sigc-config])