macros/gnome-x-checks.m4

   1 dnl GNOME_X_CHECKS
   2 dnl
   3 dnl Basic X11 related checks for X11.  At the end, the following will be
   4 dnl defined/changed:
   5 dnl   GTK_{CFLAGS,LIBS}      From AM_PATH_GTK
   6 dnl   CPPFLAGS               Will include $X_CFLAGS
   7 dnl   GNOME_HAVE_SM          `true' or `false' depending on whether session
   8 dnl                          management is available.  It is available if
   9 dnl                          both -lSM and X11/SM/SMlib.h exist.  (Some
  10 dnl                          Solaris boxes have the library but not the header)
  11 dnl   XPM_LIBS               -lXpm if Xpm library is present, otherwise ""
  12 dnl
  13 dnl The following configure cache variables are defined (but not used):
  14 dnl   gnome_cv_passdown_{x_libs,X_LIBS,X_CFLAGS}
  15 dnl
  16 AC_DEFUN([GNOME_X_CHECKS],
  17 [
  18         AM_PATH_GTK(1.2.0,,AC_MSG_ERROR(GTK not installed, or gtk-config not in path))
  19         dnl Hope that GTK_CFLAGS have only -I and -D.  Otherwise, we could
  20         dnl   test -z "$x_includes" || CPPFLAGS="$CPPFLAGS -I$x_includes"
  21         dnl
  22         dnl Use CPPFLAGS instead of CFLAGS because AC_CHECK_HEADERS uses
  23         dnl CPPFLAGS, not CFLAGS
  24         CPPFLAGS="$CPPFLAGS $GTK_CFLAGS"
  25
  26         saved_ldflags="$LDFLAGS"
  27         LDFLAGS="$LDFLAGS $GTK_LIBS"
  28
  29         gnome_cv_passdown_x_libs="$GTK_LIBS"
  30         gnome_cv_passdown_X_LIBS="$GTK_LIBS"
  31         gnome_cv_passdown_X_CFLAGS="$GTK_CFLAGS"
  32         gnome_cv_passdown_GTK_LIBS="$GTK_LIBS"
  33
  34         LDFLAGS="$saved_ldflags $GTK_LIBS"
  35
  36 dnl We are requiring GTK >= 1.1.1, which means this will be fine anyhow.
  37         USE_DEVGTK=true
  38
  39 dnl     AC_MSG_CHECKING([whether to use features from (unstable) GTK+ 1.1.x])
  40 dnl     AC_EGREP_CPP(answer_affirmatively,
  41 dnl     [#include <gtk/gtkfeatures.h>
  42 dnl     #ifdef GTK_HAVE_FEATURES_1_1_0
  43 dnl        answer_affirmatively
  44 dnl     #endif
  45 dnl     ], dev_gtk=yes, dev_gtk=no)
  46 dnl     if test "$dev_gtk" = "yes"; then
  47 dnl        USE_DEVGTK=true
  48 dnl     fi
  49 dnl     AC_MSG_RESULT("$dev_gtk")
  50
  51         GNOME_HAVE_SM=true
  52         case "$GTK_LIBS" in
  53          *-lSM*)
  54             dnl Already found it.
  55             ;;
  56          *)
  57             dnl Assume that if we have -lSM then we also have -lICE.
  58             AC_CHECK_LIB(SM, SmcSaveYourselfDone,
  59                 [GTK_LIBS="-lSM -lICE $GTK_LIBS"],GNOME_HAVE_SM=false,
  60                 $x_libs -lICE)
  61             ;;
  62         esac
  63
  64         if test "$GNOME_HAVE_SM" = true; then
  65            AC_CHECK_HEADERS(X11/SM/SMlib.h,,GNOME_HAVE_SM=false)
  66         fi
  67
  68         if test "$GNOME_HAVE_SM" = true; then
  69            AC_DEFINE(HAVE_LIBSM)
  70         fi
  71
  72         XPM_LIBS=""
  73         AC_CHECK_LIB(Xpm, XpmFreeXpmImage, [XPM_LIBS="-lXpm"], , $x_libs)
  74         AC_SUBST(XPM_LIBS)
  75
  76         AC_REQUIRE([GNOME_PTHREAD_CHECK])
  77         LDFLAGS="$saved_ldflags"
  78
  79         AC_PROVIDE([GNOME_X_CHECKS])
  80 ])