updated for version 7.0001v7.0001

1 files changed, 136 insertions, 0 deletions

diff --git a/src/link.sh b/src/link.sh
new file mode 100755
index 000000000..dc9c4a2ac
--- /dev/null
+++ b/src/link.sh
@@ -0,0 +1,136 @@
+#! /bin/sh
+#
+# link.sh -- try linking Vim with different sets of libraries, finding the
+# minimal set for fastest startup.  The problem is that configure adds a few
+# libraries when they exist, but this doesn't mean they are needed for Vim.
+#
+#      Author: Bram Moolenaar
+# Last change: 2004 Apr 05
+#
+# Warning: This fails miserably if the linker doesn't return an error code!
+#
+# Otherwise this script is fail-safe, falling back to the original full link
+# command if anything fails.
+
+echo "$LINK " >link.cmd
+exit_value=0
+
+#
+# If auto/link.sed already exists, use it.  We assume a previous run of
+# link.sh has found the correct set of libraries.
+#
+if test -f auto/link.sed; then
+  echo "link.sh: The file 'auto/link.sed' exists, which is going to be used now."
+  echo "link.sh: If linking fails, try deleting the auto/link.sed file."
+  echo "link.sh: If this fails too, try creating an empty auto/link.sed file."
+else
+
+# If linking works with the full link command, try removing some libraries,
+# that are known not to be needed on at least one system.
+# Remove auto/pathdef.c if there is a new link command and compile it again.
+# There is a loop to remove libraries that appear several times.
+#
+# Notes:
+# - Can't remove Xext; It links fine but will give an error when running gvim
+#   with Motif.
+# - Don't remove the last -lm: On HP-UX Vim links OK but crashes when the GTK
+#   GUI is started, because the "floor" symbol could not be resolved.
+#
+  cat link.cmd
+  if sh link.cmd; then
+    touch auto/link.sed
+    cp link.cmd linkit.sh
+    for libname in SM ICE nsl dnet dnet_stub inet socket dir elf iconv Xt Xmu Xp Xpm X11 Xdmcp x w dl pthread thread readline m perl crypt attr; do
+      cont=yes
+      while test -n "$cont"; do
+        if grep "l$libname " linkit.sh >/dev/null; then
+          if test ! -f link1.sed; then
+            echo "link.sh: OK, linking works, let's try removing a few libraries."
+            echo "link.sh: See auto/link.log for details."
+            rm -f auto/link.log
+          fi
+          echo "s/-l$libname  *//" >link1.sed
+          sed -f auto/link.sed <link.cmd >linkit2.sh
+          sed -f link1.sed <linkit2.sh >linkit.sh
+          # keep the last -lm
+          if test $libname != "m" || grep "lm " linkit.sh >/dev/null; then
+            echo "link.sh: Trying to remove the $libname library..."
+            cat linkit.sh >>auto/link.log
+            # Redirect this link output, it may contain error messages which
+            # should be ignored.
+            if sh linkit.sh >>auto/link.log 2>&1; then
+              echo "link.sh: We don't need the $libname library!"
+              cat link1.sed >>auto/link.sed
+              rm -f auto/pathdef.c
+            else
+              echo "link.sh: We DO need the $libname library."
+              cont=
+              cp link.cmd linkit.sh
+            fi
+          else
+            cont=
+            cp link.cmd linkit.sh
+          fi
+        else
+          cont=
+          cp link.cmd linkit.sh
+        fi
+      done
+    done
+    if test ! -f auto/pathdef.c; then
+      $MAKE objects/pathdef.o
+    fi
+    if test ! -f link1.sed; then
+      echo "link.sh: Linked fine, no libraries can be removed"
+      touch link3.sed
+    fi
+  else
+    exit_value=$?
+  fi
+fi
+
+#
+# Now do the real linking.
+#
+if test -s auto/link.sed; then
+  echo "link.sh: Using auto/link.sed file to remove a few libraries"
+  sed -f auto/link.sed <link.cmd >linkit.sh
+  cat linkit.sh
+  if sh linkit.sh; then
+    exit_value=0
+    echo "link.sh: Linked fine with a few libraries removed"
+  else
+    exit_value=$?
+    echo "link.sh: Linking failed, making auto/link.sed empty and trying again"
+    mv -f auto/link.sed link2.sed
+    touch auto/link.sed
+    rm -f auto/pathdef.c
+    $MAKE objects/pathdef.o
+  fi
+fi
+if test -f auto/link.sed -a ! -s auto/link.sed -a ! -f link3.sed; then
+  echo "link.sh: Using unmodified link command"
+  cat link.cmd
+  if sh link.cmd; then
+    exit_value=0
+    echo "link.sh: Linked OK"
+  else
+    exit_value=$?
+    if test -f link2.sed; then
+      echo "link.sh: Linking doesn't work at all, removing auto/link.sed"
+      rm -f auto/link.sed
+    fi
+  fi
+fi
+
+#
+# cleanup
+#
+rm -f link.cmd linkit.sh link1.sed link2.sed link3.sed linkit2.sh
+
+#
+# return an error code if something went wrong
+#
+exit $exit_value
+
+# vim:set sw=2 et: