backport: ltmain.sh: add support for installing into temporary staging area (e.g.

	Backport from libtool CVS:
	2002-11-03  Ossama Othman  <ossama@doc.ece.uci.edu>

	* ltmain.sh: add support for installing into temporary
	staging area (e.g. 'make install DESTDIR=...')

From-SVN: r104913

1 files changed, 49 insertions, 1 deletions

diff --git a/ltmain.sh b/ltmain.sh
index 837902e658c..9de8ae5ce5f 100644
--- a/ltmain.sh
+++ b/ltmain.sh
@@ -829,6 +829,7 @@ EOF
     linker_flags=
     dllsearchpath=
     lib_search_path=`pwd`
+    inst_prefix_dir=
 
     avoid_version=no
     dlfiles=
@@ -961,6 +962,11 @@ EOF
           prev=
           continue
           ;;
+        inst_prefix)
+          inst_prefix_dir="$arg"
+          prev=
+          continue
+          ;;
         release)
           release="-$arg"
           prev=
@@ -1187,6 +1193,11 @@ EOF
         continue
         ;;
 
+      -inst-prefix-dir)
+        prev=inst_prefix
+        continue
+        ;;
+
       # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:*
       # so, if we see these flags be careful not to treat them like -L
       -L[A-Z][A-Z]*:*)
@@ -2171,6 +2182,14 @@ EOF
                 add="$dir/$linklib"
               elif test "$hardcode_minus_L" = yes; then
                 add_dir="-L$dir"
+                # Try looking first in the location we're being installed to.
+                if test -n "$inst_prefix_dir"; then
+                  case "$libdir" in
+                    [\\/]*)
+                      add_dir="$add_dir -L$inst_prefix_dir$libdir"
+                      ;;
+                  esac
+                fi
                 add="-l$name"
               elif test "$hardcode_shlibpath_var" = yes; then
                 add_shlibpath="$dir"
@@ -2229,6 +2248,14 @@ EOF
             else
               # We cannot seem to hardcode it, guess we'll fake it.
               add_dir="-L$libdir"
+              # Try looking first in the location we're being installed to.
+              if test -n "$inst_prefix_dir"; then
+                case "$libdir" in
+                  [\\/]*)
+                    add_dir="$add_dir -L$inst_prefix_dir$libdir"
+                    ;;
+                esac
+              fi
               add="-l$name"
             fi
 
@@ -4460,7 +4487,7 @@ fi\
       for tag in $taglist; do
         tagopts="$tagopts --tag $tag"
       done
-      relink_command="(cd `pwd`; $SHELL $0$tagopts --mode=relink $libtool_args)"
+      relink_command="(cd `pwd`; $SHELL $0$tagopts --mode=relink $libtool_args @inst_prefix_dir@)"
       relink_command=`$echo "X$relink_command" | $Xsed -e "$sed_quote_subst"`
 
       # Only create the output if not a dry run.
@@ -4761,6 +4788,27 @@ relink_command=\"$relink_command\""
         dir="$dir$objdir"
 
         if test -n "$relink_command"; then
+          # Determine the prefix the user has applied to our future dir.
+          inst_prefix_dir=`$echo "$destdir" | sed "s%$libdir\$%%"`
+
+          # Don't allow the user to place us outside of our expected
+          # location b/c this prevents finding dependent libraries that
+          # are installed to the same prefix.
+          # At present, this check doesn't affect windows .dll's that
+          # are installed into $libdir/../bin (currently, that works fine)
+          # but it's something to keep an eye on.
+          if test "$inst_prefix_dir" = "$destdir"; then
+            $echo "$modename: error: cannot install \`$file' to a directory not ending in $libdir" 1>&2
+            exit $EXIT_FAILURE
+          fi
+
+          if test -n "$inst_prefix_dir"; then
+            # Stick the inst_prefix_dir data into the link command.
+            relink_command=`$echo "$relink_command" | sed "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"`
+          else
+            relink_command=`$echo "$relink_command" | sed "s%@inst_prefix_dir@%%"`
+          fi
+
           $echo "$modename: warning: relinking \`$file'" 1>&2
           $show "$relink_command"
           if $run eval "$relink_command"; then :