macros/gnome-x-checks.m4


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dnl GNOME_X_CHECKS
dnl
dnl Basic X11 related checks for X11.  At the end, the following will be
dnl defined/changed:
dnl   GTK_{CFLAGS,LIBS}      From AM_PATH_GTK
dnl   CPPFLAGS           Will include $X_CFLAGS
dnl   GNOME_HAVE_SM      `true' or `false' depending on whether session
dnl                          management is available.  It is available if
dnl                          both -lSM and X11/SM/SMlib.h exist.  (Some
dnl                          Solaris boxes have the library but not the header)
dnl   XPM_LIBS               -lXpm if Xpm library is present, otherwise ""
dnl
dnl The following configure cache variables are defined (but not used):
dnl   gnome_cv_passdown_{x_libs,X_LIBS,X_CFLAGS}
dnl
AC_DEFUN([GNOME_X_CHECKS],
[
    AM_PATH_GTK(1.1.16,,AC_MSG_ERROR(GTK not installed, or gtk-config not in path))
    dnl Hope that GTK_CFLAGS have only -I and -D.  Otherwise, we could
    dnl   test -z "$x_includes" || CPPFLAGS="$CPPFLAGS -I$x_includes"
    dnl
    dnl Use CPPFLAGS instead of CFLAGS because AC_CHECK_HEADERS uses
    dnl CPPFLAGS, not CFLAGS
        CPPFLAGS="$CPPFLAGS $GTK_CFLAGS"

        saved_ldflags="$LDFLAGS"
        LDFLAGS="$LDFLAGS $GTK_LIBS"

    gnome_cv_passdown_x_libs="$GTK_LIBS"
    gnome_cv_passdown_X_LIBS="$GTK_LIBS"
    gnome_cv_passdown_X_CFLAGS="$GTK_CFLAGS"
    gnome_cv_passdown_GTK_LIBS="$GTK_LIBS"

        LDFLAGS="$saved_ldflags $GTK_LIBS"

dnl We are requiring GTK >= 1.1.1, which means this will be fine anyhow.
    USE_DEVGTK=true

dnl AC_MSG_CHECKING([whether to use features from (unstable) GTK+ 1.1.x])
dnl AC_EGREP_CPP(answer_affirmatively,
dnl [#include <gtk/gtkfeatures.h>
dnl #ifdef GTK_HAVE_FEATURES_1_1_0
dnl    answer_affirmatively
dnl #endif
dnl ], dev_gtk=yes, dev_gtk=no)
dnl if test "$dev_gtk" = "yes"; then
dnl    USE_DEVGTK=true
dnl fi
dnl AC_MSG_RESULT("$dev_gtk")

    GNOME_HAVE_SM=true
    case "$GTK_LIBS" in
     *-lSM*)
        dnl Already found it.
        ;;
     *)
        dnl Assume that if we have -lSM then we also have -lICE.
        AC_CHECK_LIB(SM, SmcSaveYourselfDone,
            [GTK_LIBS="-lSM -lICE $GTK_LIBS"],GNOME_HAVE_SM=false,
        $x_libs -lICE)
        ;;
    esac

    if test "$GNOME_HAVE_SM" = true; then
       AC_CHECK_HEADERS(X11/SM/SMlib.h,,GNOME_HAVE_SM=false)
    fi

    if test "$GNOME_HAVE_SM" = true; then
       AC_DEFINE(HAVE_LIBSM)
    fi

    XPM_LIBS=""
    AC_CHECK_LIB(Xpm, XpmFreeXpmImage, [XPM_LIBS="-lXpm"], , $x_libs)
    AC_SUBST(XPM_LIBS)

    AC_REQUIRE([GNOME_PTHREAD_CHECK])
        LDFLAGS="$saved_ldflags"

    AC_PROVIDE([GNOME_X_CHECKS])
])