From ac22c2d05f11659238f619154f7e9d6274de38a0 Mon Sep 17 00:00:00 2001
From: alexm <alexm@72102866-910b-0410-8b05-ffd578937521>
Date: Fri, 28 Mar 2003 20:03:06 +0000
Subject: [PATCH] Fail the configure if neither ffcall nor ffi are available
 unless overridden by --disable-do.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@16287 72102866-910b-0410-8b05-ffd578937521
---
 ChangeLog    |  9 +++++++++
 configure    | 30 ++++++++++++++++++++++++++----
 configure.ac | 23 +++++++++++++++++++----
 3 files changed, 54 insertions(+), 8 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 5d0355f3b..f25a71e70 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2003-03-28 20:48  Alexander Malmberg <alexander@malmberg.org>
+
+	* configure.ac: Fail the configure if neither ffcall nor ffi is
+	available unless --disable-do is passed to configure. Add a message
+	about why a user most likely does not want to build with ffcall and
+	ffi, and with a link to the build guide.
+
+	* configure: Regenerate.
+
 2003-03-27  Adam Fedor  <fedor@gnu.org>
 
 	* Source/NSBundle.m ([NSBundle -bundleIdentifier]): New.
diff --git a/configure b/configure
index e8489a4ae..21ca13cb4 100755
--- a/configure
+++ b/configure
@@ -850,6 +850,7 @@ Optional Features:
   --enable-fake-main  		Force redefine of user main function
   --enable-libffi  		Enable use of libffi library
   --enable-ffcall  		Enable use of ffcall library
+  --disable-do			Compile even if DO-dependencies are not met
   --disable-xmltest        Do not try to compile and run a test XML program
 
 Optional Packages:
@@ -11922,6 +11923,14 @@ else
   enable_ffcall=yes
 fi;
 
+# Check whether --enable-do or --disable-do was given.
+if test "${enable_do+set}" = set; then
+  enableval="$enable_do"
+
+else
+  enable_do=yes
+fi;
+
 if test "${ac_cv_header_ffi_h+set}" = set; then
   echo "$as_me:$LINENO: checking for ffi.h" >&5
 echo $ECHO_N "checking for ffi.h... $ECHO_C" >&6
@@ -12252,12 +12261,25 @@ echo "${ECHO_T}ffcall" >&6
 else
   echo "$as_me:$LINENO: result: none" >&5
 echo "${ECHO_T}none" >&6
+  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, and you will not"
+  echo "be able to use gnustep-gui."
+  if test $enable_do = yes; then
+    echo
+    echo "You most likely do not want to build -base without DO support. Many"
+    echo "things, including all applications, won't work at all without DO."
+    echo "If you really want to build -base without DO support, add --disable-do"
+    echo "to the configure arguments."
+    echo "For more information, read the GNUstep build guide, ffcall section:"
+    echo "http://documents.made-it.com/GNUstep/buildguide.html"
+    { { echo "$as_me:$LINENO: error: No ffcall interface library found." >&5
+echo "$as_me: error: No ffcall interface library found." >&2;}
+   { (exit 1); exit 1; }; }
+  fi
   { echo "$as_me:$LINENO: WARNING: No ffcall interface library found" >&5
 echo "$as_me: WARNING: No ffcall interface library found" >&2;}
-  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"
 fi
 
 
diff --git a/configure.ac b/configure.ac
index aa431480f..649412492 100644
--- a/configure.ac
+++ b/configure.ac
@@ -858,6 +858,10 @@ AC_ARG_ENABLE(ffcall,
   [  --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 +885,22 @@ elif test $enable_ffcall = yes; then
   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."
+    echo "For more information, read the GNUstep build guide, ffcall section:"
+    echo "http://documents.made-it.com/GNUstep/buildguide.html"
+    AC_MSG_ERROR([No ffcall interface library found.])
+  fi
+  AC_MSG_WARN([No ffcall interface library found])
 fi
 AC_SUBST(WITH_FFI)