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diff --git a/Build/source/texk/dvipng/m4/gs-device.m4 b/Build/source/texk/dvipng/m4/gs-device.m4
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+++ b/Build/source/texk/dvipng/m4/gs-device.m4
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+# gs-device.m4 - Macro to check for GS devices.
+## Copyright (C) 20xx Some One <someone@somewhere.net>
+## Some affiliation
+##
+## Temporary notice:
+## I extracted this macro from aclocal.m4 in the dvipng-1.9 distribution
+## and renamed it in order not to violate the Autoconf (AC_) namespace.
+## 26 Mar 2008, Peter Breitenlohner <tex-live@tug.org>
+##
+## This file is free software; the copyright holder gives unlimited
+## permission to copy and/or distribute it, with or without
+## modifications, as long as this notice is preserved.
+
+# serial 1
+
+# xx_GS_HAS_DEVICE(DEVICE, ACTION-IF-FAILED)
+# ------------------------------------------
+# Check if GS has the device DEVICE and execute the shell code
+# ACTION-IF-FAILED if not.
+AC_DEFUN([xx_GS_HAS_DEVICE],
+ [AC_MSG_CHECKING([whether $GS has the $1 device])
+ if $GS -h | grep $1 >/dev/null; then
+ AC_MSG_RESULT(yes)
+ else
+ AC_MSG_RESULT(no)
+ $2
+ fi
+])# xx_GS_HAS_DEVICE
+