AX_BOOST_SIGNALS
, 
, 

2006-06-15

Thomas Porschberg <thomas@randspringer.de> Michael Tindal <mtindal@paradoxpoint.com>

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Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. Users of this software should generally follow the principles of the MIT License includings its disclaimer.

cryp.to ac-archive's C++ Support (released)

Test for Signals library from the Boost C++ libraries. The macro requires a preceding call to AX_BOOST_BASE. Further documentation is available at <http://randspringer.de/boost/index.html>.

This macro calls:

 AC_SUBST(BOOST_SIGNALS_LIB)

And sets:

 HAVE_BOOST_SIGNALS

AC_DEFUN([AX_BOOST_SIGNALS],
[
	AC_ARG_WITH([boost-signals],
	AS_HELP_STRING([--with-boost-signals@<:@=special-lib@:>@],
                   [use the Signals library from boost - it is possible to specify a certain library for the linker
                        e.g. --with-boost-signals=boost_signals-gcc-mt-d ]),
        [
        if test "$withval" = "no"; then
			want_boost="no"
        elif test "$withval" = "yes"; then
            want_boost="yes"
            ax_boost_user_signals_lib=""
        else
		    want_boost="yes"
        	ax_boost_user_signals_lib="$withval"
		fi
        ],
        [want_boost="no"]
	)

	if test "x$want_boost" = "xyes"; then
        AC_REQUIRE([AC_PROG_CC])
		CPPFLAGS_SAVED="$CPPFLAGS"
		CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
		export CPPFLAGS

		LDFLAGS_SAVED="$LDFLAGS"
		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
		export LDFLAGS

        AC_CACHE_CHECK(whether the Boost::Signals library is available,
					   ax_cv_boost_signals,
        [AC_LANG_PUSH([C++])
		 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([[@%:@include <boost/signal.hpp>
											]],
                                  [[boost::signal<void ()> sig;
                                    return 0;
                                  ]]),
                           ax_cv_boost_signals=yes, ax_cv_boost_signals=no)
         AC_LANG_POP([C++])
		])
		if test "x$ax_cv_boost_signals" = "xyes"; then
			AC_DEFINE(HAVE_BOOST_SIGNALS,,[define if the Boost::Signals library is available])
			BN=boost_signals
            if test "x$ax_boost_user_signals_lib" = "x"; then
				for ax_lib in $BN $BN-$CC $BN-$CC-mt $BN-$CC-mt-s $BN-$CC-s \
                              lib$BN lib$BN-$CC lib$BN-$CC-mt lib$BN-$CC-mt-s lib$BN-$CC-s \
                              $BN-mgw $BN-mgw $BN-mgw-mt $BN-mgw-mt-s $BN-mgw-s ; do
				    AC_CHECK_LIB($ax_lib, main, [BOOST_SIGNALS_LIB="-l$ax_lib" AC_SUBST(BOOST_SIGNALS_LIB) link_signals="yes" break],
                                 [link_signals="no"])
  				done
            else
               for ax_lib in $ax_boost_user_signals_lib $BN-$ax_boost_user_signals_lib; do
				      AC_CHECK_LIB($ax_lib, main,
                                   [BOOST_SIGNALS_LIB="-l$ax_lib" AC_SUBST(BOOST_SIGNALS_LIB) link_signals="yes" break],
                                   [link_signals="no"])
                  done

            fi
			if test "x$link_signals" = "xno"; then
				AC_MSG_ERROR(Could not link against $ax_lib !)
			fi
		fi

		CPPFLAGS="$CPPFLAGS_SAVED"
    	LDFLAGS="$LDFLAGS_SAVED"
	fi
])