Implemented configure --enable-pic flag to build the main lib with position-independant objects.

This avoids having to edit localdefs by hand to build the new php extension,
and voids the need for the Python module to recompile Recoll source files.

src/lib/mkMake

@@ -93,6 +93,10 @@ for c in $SRC_CC;do
     DEPS="$DEPS $s"
 done
 
+# The objects need to depend on the localdefs file in case it is
+# changed by a re-configure (it has the local compile flags)
+defs=\$\(depth\)/mk/localdefs
+
 test -f $mk && chmod +w $mk
 
 cat > $mk <<EOF
@@ -111,18 +115,18 @@ librcl.a : \$(DEPS) \$(OBJS) unac.o
 	ar ru librcl.a \$(OBJS) unac.o
 	\$(RANLIB) librcl.a
 
-unac.o : \$(depth)/unac/unac.c \$(depth)/unac/unac.h
+unac.o : \$(depth)/unac/unac.c \$(depth)/unac/unac.h $
 	\$(CC) \$(ALL_CXXFLAGS) -c \$(depth)/unac/unac.c
 EOF
 
 for c in $SRC_CPP;do
     o=`basename $c .cpp`.o
-    echo "$o : $c" >> $mk
+    echo "$o : $c $defs" >> $mk
     echo "	\$(CXX) \$(ALL_CXXFLAGS) -c $c" >> $mk
 done
 for c in $SRC_CC;do
     o=`basename $c .cc`.o
-    echo "$o : $c" >> $mk
+    echo "$o : $c $defs" >> $mk
     echo "	\$(CXX) \$(ALL_CXXFLAGS) -c $c" >> $mk
 done
 
@@ -138,7 +142,7 @@ EOF
 for c in $SRC_CPP;do
     d=`basename $c .cpp`.dep
     s=`basename $c .cpp`.dep.stamp
-    echo "$s : $c" >> $mk
+    echo "$s : $c $defs" >> $mk
     echo "	\$(CXX) -M \$(ALL_CXXFLAGS) $c > $d" >> $mk
     echo "	touch $s" >> $mk
 done
@@ -149,7 +153,7 @@ done
 for c in $SRC_CC;do
     d=`basename $c .cc`.dep
     s=`basename $c .cc`.dep.stamp
-    echo "$s : $c" >> $mk
+    echo "$s : $c $defs" >> $mk
     echo "	\$(CXX) -M \$(ALL_CXXFLAGS) $c > $d" >> $mk
     echo "	touch $s" >> $mk
 done