correctly apply patch

auto/lib/pcre/makefile.bcc

diff --git a/auto/lib/pcre/makefile.bcc b/auto/lib/pcre/makefile.bcc
index 9fd821d..239d129 100644
--- a/auto/lib/pcre/makefile.bcc
+++ b/auto/lib/pcre/makefile.bcc
@@ -18,4 +18,4 @@
 pcre.h:
 	patch -o pcre.h pcre.in patch.pcre.in
 	patch -o config.h config.in patch.config.in
-	patch -o pcre.c pcre.c patch.pcre.c
+	patch < patch.pcre.c

auto/lib/pcre/makefile.msvc

diff --git a/auto/lib/pcre/makefile.msvc b/auto/lib/pcre/makefile.msvc
index 4da4e0c..8c40920 100644
--- a/auto/lib/pcre/makefile.msvc
+++ b/auto/lib/pcre/makefile.msvc
@@ -20,4 +20,4 @@
 pcre.h:
 	patch -o pcre.h pcre.in patch.pcre.in
 	patch -o config.h config.in patch.config.in
-	patch -o pcre.c pcre.c patch.pcre.c
+	patch < patch.pcre.c