--- a/mkspecs/features/yacc.prf	Tue Jul 06 15:10:48 2010 +0300
+++ b/mkspecs/features/yacc.prf	Wed Aug 18 10:37:55 2010 +0300
@@ -21,10 +21,10 @@
     !yacc_no_name_mangle:QMAKE_YACCDECLFLAGS += $$QMAKE_YACCFLAGS_MANGLE
 
     yacc_decl.commands = \
-        $$QMAKE_YACC $$QMAKE_YACCDECLFLAGS ${QMAKE_FILE_IN}$$escape_expand(\n\t) \
-        $$QMAKE_DEL_FILE $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_H)} $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_CPP)}$$escape_expand(\n\t) \
-        $$QMAKE_MOVE $${QMAKE_YACC_HEADER} $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_H)}$$escape_expand(\n\t) \
-        $$QMAKE_MOVE $${QMAKE_YACC_SOURCE} $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_CPP)}$$escape_expand(\n\t)
+        $$QMAKE_YACC $$QMAKE_YACCDECLFLAGS ${QMAKE_FILE_IN}$$escape_expand(\\n\\t) \
+        $$QMAKE_DEL_FILE $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_H)} $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_CPP)}$$escape_expand(\\n\\t) \
+        $$QMAKE_MOVE $${QMAKE_YACC_HEADER} $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_H)}$$escape_expand(\\n\\t) \
+        $$QMAKE_MOVE $${QMAKE_YACC_SOURCE} $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_CPP)}$$escape_expand(\\n\\t)
     yacc_decl.output = $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_H)}
 
     silent:yacc_decl.commands = @echo Yacc ${QMAKE_FILE_IN} && $$yacc_decl.commands
@@ -35,7 +35,7 @@
     yacc_impl.name = source for ${QMAKE_FILE_IN}
     yacc_impl.input = YACCSOURCES
     yacc_impl.variable_out = GENERATED_SOURCES
-    yacc_impl.commands = $$escape_expand(\n)        # We don't want any commands where, but if command is empty no rules are created
+    yacc_impl.commands = $$escape_expand(\\n)        # We don't want any commands where, but if command is empty no rules are created
     yacc_impl.depends = $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_H)}    # Make sure we depend on the step above
     yacc_impl.output = $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_yacc$${first(QMAKE_EXT_CPP)}   # Faked output from this step, output really created in step above
     QMAKE_EXTRA_COMPILERS += yacc_impl