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annotate OrthancFramework/Resources/CMake/ProtobufConfiguration.cmake @ 5188:4c6f0211caaf db-protobuf

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compiling the protobuf compiler
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sun, 26 Mar 2023 21:09:13 +0200
parents 9466c95f70c8
children c0f6c6fe1c47
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1 # Orthanc - A Lightweight, RESTful DICOM Store
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2 # Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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3 # Department, University Hospital of Liege, Belgium
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4 # Copyright (C) 2017-2023 Osimis S.A., Belgium
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5 # Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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6 #
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7 # This program is free software: you can redistribute it and/or
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8 # modify it under the terms of the GNU Lesser General Public License
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9 # as published by the Free Software Foundation, either version 3 of
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10 # the License, or (at your option) any later version.
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11 #
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12 # This program is distributed in the hope that it will be useful, but
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13 # WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 # Lesser General Public License for more details.
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16 #
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17 # You should have received a copy of the GNU Lesser General Public
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18 # License along with this program. If not, see
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19 # <http://www.gnu.org/licenses/>.
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20
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21
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22 if (STATIC_BUILD OR NOT USE_SYSTEM_PROTOBUF)
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23 if (ENABLE_PROTOBUF_COMPILER)
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24 include(ExternalProject)
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25 externalproject_add(ProtobufCompiler
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26 SOURCE_DIR "${CMAKE_SOURCE_DIR}/../OrthancFramework/Resources/ProtocolBuffers"
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27 BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/ProtobufCompiler-build"
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28 # this helps triggering build when changing the external project
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29 BUILD_ALWAYS 1
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30 CMAKE_ARGS
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31 -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
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32 -DCMAKE_INSTALL_PREFIX=${CMAKE_CURRENT_BINARY_DIR}
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33 INSTALL_COMMAND ""
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34 )
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35 set(PROTOC_EXECUTABLE ${CMAKE_CURRENT_BINARY_DIR}/ProtobufCompiler-build/protoc)
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36 endif()
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37
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38 include(${CMAKE_CURRENT_LIST_DIR}/../ProtocolBuffers/ProtobufLibrary.cmake)
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39 source_group(ThirdParty\\Protobuf REGULAR_EXPRESSION ${PROTOBUF_SOURCE_DIR}/.*)
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40
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41 else()
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42 if (CMAKE_CROSSCOMPILING)
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43 message(FATAL_ERROR "If cross-compiling, the static version of Protocol Buffers should be used to avoid version mismatch")
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44 endif()
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45
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46 if (ENABLE_PROTOBUF_COMPILER)
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47 find_program(PROTOC_EXECUTABLE protoc)
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48 if (${PROTOC_EXECUTABLE} MATCHES "PROTOC_EXECUTABLE-NOTFOUND")
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49 message(FATAL_ERROR "Please install the 'protoc' compiler for Protocol Buffers (package 'protobuf-compiler' on Debian/Ubuntu)")
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50 endif()
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51 add_custom_target(ProtobufCompiler)
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52 endif()
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53
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54 check_include_file_cxx(google/protobuf/any.h HAVE_PROTOBUF_H)
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55 if (NOT HAVE_PROTOBUF_H)
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56 message(FATAL_ERROR "Please install the libprotobuf-dev package")
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57 endif()
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58
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59 set(CMAKE_REQUIRED_LIBRARIES "protobuf")
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60
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61 include(CheckCXXSourceCompiles)
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62 check_cxx_source_compiles(
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63 "
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64 #include <google/protobuf/descriptor.h>
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65 int main()
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66 {
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67 google::protobuf::FieldDescriptor::TypeName(google::protobuf::FieldDescriptor::TYPE_FLOAT);
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68 }
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69 " HAVE_PROTOBUF_LIB)
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70 if (NOT HAVE_PROTOBUF_LIB)
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71 message(FATAL_ERROR "Cannot find the protobuf library")
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72 endif()
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73
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74 unset(CMAKE_REQUIRED_LIBRARIES)
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75
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76 link_libraries(protobuf)
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77 endif()