mklib: Extract archives into temporary directories

When static libraries are created from other archives, objects are
extracted and then deleted when the static library is done. This can
race when there are multiple static libraries being created from the
same archives as with libmesa.a and libmesagallium.a.

Should fix this issue with parallel jobs:

make[5]: *** No rule to make target
> `../../../../../../src/mesa/libmesagallium.a', needed by
> `radeon_dri.so'. Stop

Signed-off-by: Dan Nicholson <dbn.lists@gmail.com>
Reported-and-Tested-by: Sedat Dilek <sedat.dilek@gmail.com>

1 files changed, 17 insertions, 5 deletions

diff --git a/bin/mklib b/bin/mklib
index 0acaeb96eae..9799a4ed277 100755
--- a/bin/mklib
+++ b/bin/mklib
@@ -28,15 +28,26 @@
 # Given a list of files, look for .a archives and unpack them.
 # Return the original list of files minus the .a files plus the unpacked files.
 expand_archives() {
+    DIR=$1
+    shift
     FILES=$@
     NEWFILES=""
+    ORIG_DIR=`pwd`
+    mkdir -p "$DIR"
+    cd "$DIR"
     for FILE in $FILES ; do
         case $FILE in
             *.a)
                 # extract the .o files from this .a archive
+                case $FILE in
+                    /*) ;;
+                    *)  FILE="$ORIG_DIR/$FILE" ;;
+                esac
                 MEMBERS=`ar t $FILE`
                 ar x $FILE
-                NEWFILES="$NEWFILES $MEMBERS"
+                for MEMBER in $MEMBERS ; do
+                    NEWFILES="$NEWFILES $DIR/$MEMBER"
+                done
                 ;;
             *)
                 # other file type, just add to list
@@ -44,6 +55,7 @@ expand_archives() {
                 ;;
         esac
     done
+    cd "$ORIG_DIR"
     echo $NEWFILES
 }
 
@@ -360,13 +372,13 @@ case $ARCH in
             fi
 
 	    # expand .a into .o files
-	    NEW_OBJECTS=`expand_archives $OBJECTS`
+	    NEW_OBJECTS=`expand_archives ${LIBNAME}.obj $OBJECTS`
 
             # make static lib
 	    FINAL_LIBS=`make_ar_static_lib ${OPTS} 1 ${LIBNAME} ${NEW_OBJECTS}`
 
 	    # remove temporary extracted .o files
-	    rm -f `contents_of_archives $OBJECTS`
+	    rm -rf ${LIBNAME}.obj
         else
 	    # make dynamic library
 	    LIBNAME="lib${LIBNAME}"     # prefix with "lib"
@@ -553,12 +565,12 @@ case $ARCH in
 	    echo "mklib: Making FreeBSD static library: " ${STLIB}
 
 	    # expand .a into .o files
-	    NEW_OBJECTS=`expand_archives $OBJECTS`
+	    NEW_OBJECTS=`expand_archives ${STLIB}.obj $OBJECTS`
 
 	    FINAL_LIBS=`make_ar_static_lib cq 1 ${STLIB} ${NEW_OBJECTS}`
 
 	    # remove temporary extracted .o files
-	    rm -f `contents_of_archives $OBJECTS`
+	    rm -rf ${STLIB}.obj
 	else
 	    # make dynamic library
 	    SHLIB="lib${LIBNAME}.so.${MAJOR}"