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annotate OrthancFramework/Resources/CMake/EmscriptenParameters.cmake @ 5651:c4e33e0f907b

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merge
author Alain Mazy <am@orthanc.team>
date Wed, 05 Jun 2024 11:04:37 +0200
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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) 2024-2024 Orthanc Team SRL, Belgium
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6 # Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 #
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8 # This program is free software: you can redistribute it and/or
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9 # modify it under the terms of the GNU Lesser General Public License
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10 # as published by the Free Software Foundation, either version 3 of
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11 # the License, or (at your option) any later version.
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12 #
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13 # This program is distributed in the hope that it will be useful, but
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14 # WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 # Lesser General Public License for more details.
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17 #
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18 # You should have received a copy of the GNU Lesser General Public
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19 # License along with this program. If not, see
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20 # <http://www.gnu.org/licenses/>.
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21
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22
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23 # https://github.com/emscripten-core/emscripten/blob/master/src/settings.js
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24
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25 if (NOT "${EMSCRIPTEN_TRAP_MODE}" STREQUAL "")
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26 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s BINARYEN_TRAP_MODE='\"${EMSCRIPTEN_TRAP_MODE}\"'")
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27 endif()
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28
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29 # If "-O3" is used (the default in "Release" mode), this results in a
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30 # too large memory consumption in "wasm-opt", at least in Emscripten
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31 # 3.1.7, which ultimately crashes the compiler. So we force "-O2"
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32 # (this also has the advantage of speeding up the build):
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33 set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG")
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34
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35 # "DISABLE_EXCEPTION_CATCHING" is a "compile+link" option. HOWEVER,
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36 # setting it inside "WASM_FLAGS" creates link errors, at least with
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37 # side modules. TODO: Understand why
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38 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s DISABLE_EXCEPTION_CATCHING=0")
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39
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40 # "-Wno-unused-command-line-argument" is used to avoid annoying
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41 # warnings about setting WASM, FETCH and ASSERTIONS, which was
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42 # required for earlier versions of emsdk:
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43 # https://groups.google.com/g/emscripten-discuss/c/VX4enWfadUE
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44 set(WASM_FLAGS "${WASM_FLAGS} -Wno-unused-command-line-argument")
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45
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46 #set(WASM_FLAGS "${WASM_FLAGS} -s DISABLE_EXCEPTION_CATCHING=0")
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47
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48 if (EMSCRIPTEN_TARGET_MODE STREQUAL "wasm")
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49 # WebAssembly
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50 set(WASM_FLAGS "${WASM_FLAGS} -s WASM=1")
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51
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52 elseif (EMSCRIPTEN_TARGET_MODE STREQUAL "asm.js")
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53 # asm.js targeting IE 11
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54 set(WASM_FLAGS "-s WASM=0 -s ASM_JS=2 -s LEGACY_VM_SUPPORT=1")
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55
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56 else()
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57 message(FATAL_ERROR "Bad value for EMSCRIPTEN_TARGET_MODE: ${EMSCRIPTEN_TARGET_MODE}")
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58 endif()
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59
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60 if (CMAKE_BUILD_TYPE STREQUAL "Debug")
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61 set(WASM_FLAGS "${WASM_FLAGS} -s SAFE_HEAP=1 -s ASSERTIONS=1")
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62 endif()
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63
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64 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WASM_FLAGS}")
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65 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WASM_FLAGS}")