Re: -gui and ffcall/ffi

[Alexander Malmberg]

Thomas Cherryhomes wrote:
[snip]
> I suggested that ffcall should now be a requirement. Alex suggested that we
> should put a flag in base that allows one to override the requirement of 
> ffcall
> from base.

I've attached a patch that does this (only for configure.ac; remember to
run autoconf if you want to test it). If neither ffcall nor ffi is
found, and --disable-do is not passed in, it prints an explanation (in
addition to the existing warning):

""
You most likely do not want to build -base without DO support. Many
things, including all applications, won't work at all without DO.
If you really want to build -base without DO support, add --disable-do
to the configure arguments.
""

and fails.  Perhaps the explanation should be extended to say that
ffcall is recommended, and with url:s to it and/or the build guide.

Any comments? Should I commit this?

- Alexander Malmberg

Index: configure.ac
===================================================================
RCS file: /cvsroot/gnustep/gnustep/core/base/configure.ac,v
retrieving revision 1.13
diff -u -r1.13 configure.ac
--- configure.ac        23 Mar 2003 07:06:26 -0000      1.13
+++ configure.ac        27 Mar 2003 18:41:29 -0000
@@ -858,6 +858,10 @@
   [  --enable-ffcall           Enable use of ffcall library],,
   enable_ffcall=yes)
 
+AC_ARG_ENABLE(do,
+  [  --disable-do                      Compile even if DO-dependencies are not 
met],,
+  enable_do=yes)
+
 AC_CHECK_HEADER(ffi.h, , enable_libffi=no)
 
 AC_MSG_CHECKING("for forwarding callback in runtime")
@@ -881,11 +885,20 @@
   AC_MSG_RESULT(ffcall)
 else
   AC_MSG_RESULT(none)
-  AC_MSG_WARN([No ffcall interface library found])
   echo
-  echo "GNUstep requires the ffcall library to do invocations and DO"
-  echo "Make sure this library is installed (see installation instructions)"
-  echo "Otherwise DO will not be compatible with other systems"
+  echo "GNUstep requires the ffcall library to do invocations and DO."
+  echo "Make sure this library is installed (see installation instructions)."
+  echo "Otherwise DO will not be compatible with other systems, and you will 
not"
+  echo "be able to use gnustep-gui."
+  if test $enable_do = yes; then
+    echo
+    echo "You most likely do not want to build -base without DO support. Many"
+    echo "things, including all applications, won't work at all without DO."
+    echo "If you really want to build -base without DO support, add 
--disable-do"
+    echo "to the configure arguments."
+    AC_MSG_ERROR([No ffcall interface library found.])
+  fi
+  AC_MSG_WARN([No ffcall interface library found])
 fi
 AC_SUBST(WITH_FFI)