CMake file for novacoind (USE_LEVELDB does not work yet)

[novacoin.git] / src / additional / cmake / FindQREncode.cmake

diff --git a/src/additional/cmake/FindQREncode.cmake b/src/additional/cmake/FindQREncode.cmake
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+# Copyright (c) 2019-2020 The Bitcoin developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#.rst
+# FindQREncode
+# -------------
+#
+# Find the QREncode library. The following
+# components are available::
+#   qrencode
+#
+# This will define the following variables::
+#
+#   QREncode_FOUND - system has QREncode lib
+#   QREncode_INCLUDE_DIRS - the QREncode include directories
+#   QREncode_LIBRARIES - Libraries needed to use QREncode
+#
+# And the following imported target::
+#
+#   QREncode::qrencode
+
+include(BrewHelper)
+find_brew_prefix(_QREncode_BREW_HINT qrencode)
+
+find_package(PkgConfig)
+pkg_check_modules(PC_QREncode QUIET libqrencode)
+
+find_path(QREncode_INCLUDE_DIR
+       NAMES qrencode.h
+       HINTS ${_QREncode_BREW_HINT}
+       PATHS ${PC_QREncode_INCLUDE_DIRS}
+       PATH_SUFFIXES include
+)
+
+set(QREncode_INCLUDE_DIRS "${QREncode_INCLUDE_DIR}")
+mark_as_advanced(QREncode_INCLUDE_DIR)
+
+# TODO: extract a version number.
+# For now qrencode does not provide an easy way to extract a version number.
+
+if(QREncode_INCLUDE_DIR)
+       include(ExternalLibraryHelper)
+       find_component(QREncode qrencode
+               NAMES qrencode
+               HINTS ${_QREncode_BREW_HINT}
+               PATHS ${PC_QREncode_LIBRARY_DIRS}
+               INCLUDE_DIRS ${QREncode_INCLUDE_DIRS}
+       )
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(QREncode
+       REQUIRED_VARS
+               QREncode_INCLUDE_DIR
+               REASON_FAILURE_MESSAGE "if displaying QR codes is not required, it can be skipped by passing -DENABLE_QRCODE=OFF to the cmake command line"
+       HANDLE_COMPONENTS
+)