diff --git a/Makefile.frag b/Makefile.frag
index 6cecc2a..8a49ffa 100644
--- a/Makefile.frag
+++ b/Makefile.frag
@@ -14,11 +14,11 @@ $(XCACHE_STRUCTINFO_OUT): $(XCACHE_INCLUDES_I) $(srcdir)/mkstructinfo.awk
 	-$(XCACHE_AWK) -f $(srcdir)/mkstructinfo.awk < $(XCACHE_INCLUDES_I) > $(XCACHE_STRUCTINFO_OUT).tmp && mv $(XCACHE_STRUCTINFO_OUT).tmp $(XCACHE_STRUCTINFO_OUT)
 
 $(XCACHE_PROC_OUT): $(XCACHE_PROC_SRC) $(XCACHE_STRUCTINFO_OUT) $(XCACHE_PROC_SOURCES)
-	$(M4) -D srcdir='`'"$(srcdir)'" -D builddir='`'"$(builddir)'" $(XCACHE_ENABLE_TEST) $(XCACHE_PROC_SRC) > $(XCACHE_PROC_OUT).tmp
+	$(M4) -D srcdir=$(XCACHE_BACKTICK)"$(srcdir)'" -D builddir=$(XCACHE_BACKTICK)"$(builddir)'" $(XCACHE_ENABLE_TEST) $(XCACHE_PROC_SRC) > $(XCACHE_PROC_OUT).tmp
 	mv $(XCACHE_PROC_OUT).tmp $(XCACHE_PROC_OUT)
 
 $(XCACHE_PROC_H): $(XCACHE_PROC_OUT)
-	$(GREP) 'export: ' $(XCACHE_PROC_OUT) | $(SED) 's/.*export:\(.*\):export.*/\1/g' > $(XCACHE_PROC_H)
+	$(GREP) "export: " $(XCACHE_PROC_OUT) | $(SED) "s/.*export:\(.*\):export.*/\1/g" > $(XCACHE_PROC_H)
 	-$(XCACHE_INDENT) < $(XCACHE_PROC_H) > $(XCACHE_PROC_H).tmp && mv $(XCACHE_PROC_H).tmp $(XCACHE_PROC_H)
 
 $(XCACHE_PROC_C): $(XCACHE_PROC_OUT) $(XCACHE_PROC_H)
@@ -41,4 +41,4 @@ xcachetest:
 	$(SED) "s#\\./modules/#$(top_builddir)/modules/#" < $(srcdir)/xcache-test.ini > $(top_builddir)/tmp-php.ini
 	TEST_PHP_SRCDIR=$(top_srcdir) \
 	CC="$(CC)" \
-		$(srcdir)/run-xcachetest -d 'open_basedir=' -d 'safe_mode=0' -d 'output_buffering=0' -d 'memory_limit=-1' $(top_srcdir)/run-tests.php $(TESTS) $(TEST_ARGS) -c $(top_builddir)/tmp-php.ini
+		$(srcdir)/run-xcachetest -d "open_basedir=" -d "safe_mode=0" -d "output_buffering=0" -d "memory_limit=-1" $(top_srcdir)/run-tests.php $(TESTS) $(TEST_ARGS) -c $(top_builddir)/tmp-php.ini
diff --git a/config.m4 b/config.m4
index 79301ea..da09779 100644
--- a/config.m4
+++ b/config.m4
@@ -84,6 +84,8 @@ if test "$PHP_XCACHE" != "no"; then
     M4="$M4 -B 102400"
   fi
   PHP_SUBST([M4])
+  XCACHE_BACKTICK="'"'`'"'"
+  PHP_SUBST([XCACHE_BACKTICK])
   AC_PATH_PROGS([GREP], [grep])
   PHP_SUBST([GREP])
   AC_PATH_PROGS([SED], [sed])
diff --git a/config.w32 b/config.w32
index ed86f68..7af39c9 100644
--- a/config.w32
+++ b/config.w32
@@ -55,6 +55,7 @@ if (PHP_XCACHE != "no") {
 			ERROR(apps[i] + " is currently required to build XCache");
 		}
 	}
+	DEFINE("XCACHE_BACKTICK", "`")
 	PATH_PROG("gawk", null, "XCACHE_AWK") || PATH_PROG("awk", null, "XCACHE_AWK");
 
 	// the cygwin indent is known broken on our output