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diff --git a/math/plplot/files/patch-cmake_modules_FindQHULL.cmake b/math/plplot/files/patch-cmake_modules_FindQHULL.cmake
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+++ b/math/plplot/files/patch-cmake_modules_FindQHULL.cmake
@@ -0,0 +1,48 @@
+--- cmake/modules/FindQHULL.cmake.orig 2019-06-01 23:24:33 UTC
++++ cmake/modules/FindQHULL.cmake
+@@ -1,44 +1 @@
+-# Find qhull header and library.
+-#
+-
+-# This module defines the following uncached variables:
+-# QHULL_FOUND, if false, do not try to use qhull.
+-# QHULL_INCLUDE_DIRS, where to find libqhull/qhull_a.h OR qhull/qhull_a.h.
+-# HAS_LIBQHULL_INCLUDE
+-# if true use the libqhull/qhull_a.h form of header,
+-# if false use the qhull/qhull_a.h form of header.
+-# QHULL_LIBRARIES, the libraries to link against to use the qhull library
+-# QHULL_LIBRARY_DIRS, the directory where the qhull library is found.
+-
+-include(FindPackageHandleStandardArgs)
+-
+-# Look preferentially for the libqhull form of header directory since
+-# that is what is supplied by upstream qhull, and if the user is
+-# finding a local install of the upstream library below, he wants to
+-# access that same upstream version of the headers to be consistent.
+-find_file(QHULL_HEADER_FILE NAMES libqhull/qhull_a.h qhull/qhull_a.h)
+-if(QHULL_HEADER_FILE)
+- # message(STATUS "QHULL_HEADER_FILE = ${QHULL_HEADER_FILE}")
+- if(QHULL_HEADER_FILE MATCHES "libqhull")
+- set(HAS_LIBQHULL_INCLUDE ON)
+- else(QHULL_HEADER_FILE MATCHES "libqhull")
+- set(HAS_LIBQHULL_INCLUDE OFF)
+- endif(QHULL_HEADER_FILE MATCHES "libqhull")
+- # Determine grandparent directory of header file
+- get_filename_component(QHULL_INCLUDE_DIRS ${QHULL_HEADER_FILE} DIRECTORY)
+- get_filename_component(QHULL_INCLUDE_DIRS ${QHULL_INCLUDE_DIRS} DIRECTORY)
+-elseif(NOT QHULL_HEADER_FILE AND NOT QHULL_FIND_QUIETLY)
+- message(STATUS "Neither qhull/qhull_a.h header nor libqhull/qhull_a.h could be found")
+-endif(QHULL_HEADER_FILE)
+-
+-find_library(QHULL_LIBRARY qhull)
+-if( QHULL_LIBRARY )
+- get_filename_component(QHULL_LIBRARY_DIRS ${QHULL_LIBRARY} DIRECTORY)
+- set(QHULL_LIBRARIES ${QHULL_LIBRARY})
+-elseif(NOT QHULL_LIBRARY AND NOT QHULL_FIND_QUIETLY)
+- message(STATUS "qhull library could not be found")
+-endif(QHULL_LIBRARY)
+-
+-find_package_handle_standard_args(QHULL
+- REQUIRED_VARS QHULL_INCLUDE_DIRS QHULL_LIBRARIES QHULL_LIBRARY_DIRS
+- )
++# Removed (See https://sourceforge.net/p/plplot/plplot/ci/52479b8830ee02900b41fe3ec947aed6b1841a48/)