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annotate OrthancFramework/Resources/CMake/EmscriptenParameters.cmake @ 4952:15ce7af202f1

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fix EmscriptenParameters.cmake
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 22 Mar 2022 10:20:25 +0100
parents 49bd6504f15e
children 0ea402b4d901
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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) 2017-2022 Osimis S.A., Belgium
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5 # Copyright (C) 2021-2022 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 # https://github.com/emscripten-core/emscripten/blob/master/src/settings.js
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23
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24 if (NOT "${EMSCRIPTEN_TRAP_MODE}" STREQUAL "")
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25 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s BINARYEN_TRAP_MODE='\"${EMSCRIPTEN_TRAP_MODE}\"'")
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26 endif()
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27
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28 # If "-O3" is used (the default in "Release" mode), this results in a
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29 # too large memory consumption in "wasm-opt", at least in Emscripten
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30 # 3.1.7, which ultimately crashes the compiler. So we force "-O2"
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31 # (this also has the advantage of speeding up the build):
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32 set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG")
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33
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34 # "DISABLE_EXCEPTION_CATCHING" is a "compile+link" option. HOWEVER,
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35 # setting it inside "WASM_FLAGS" creates link errors, at least with
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36 # side modules. TODO: Understand why
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37 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s DISABLE_EXCEPTION_CATCHING=0")
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38
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39 # "-Wno-unused-command-line-argument" is used to avoid annoying
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40 # warnings about setting WASM, FETCH and ASSERTIONS, which was
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41 # required for earlier versions of emsdk:
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42 # https://groups.google.com/g/emscripten-discuss/c/VX4enWfadUE
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43 set(WASM_FLAGS "${WASM_FLAGS} -Wno-unused-command-line-argument")
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44
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45 #set(WASM_FLAGS "${WASM_FLAGS} -s DISABLE_EXCEPTION_CATCHING=0")
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47 if (EMSCRIPTEN_TARGET_MODE STREQUAL "wasm")
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48 # WebAssembly
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49 set(WASM_FLAGS "${WASM_FLAGS} -s WASM=1")
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51 elseif (EMSCRIPTEN_TARGET_MODE STREQUAL "asm.js")
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52 # asm.js targeting IE 11
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53 set(WASM_FLAGS "-s WASM=0 -s ASM_JS=2 -s LEGACY_VM_SUPPORT=1")
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54
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55 else()
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56 message(FATAL_ERROR "Bad value for EMSCRIPTEN_TARGET_MODE: ${EMSCRIPTEN_TARGET_MODE}")
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57 endif()
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58
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59 if (CMAKE_BUILD_TYPE STREQUAL "Debug")
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60 set(WASM_FLAGS "${WASM_FLAGS} -s SAFE_HEAP=1 -s ASSERTIONS=1")
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61 endif()
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62
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63 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WASM_FLAGS}")
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64 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WASM_FLAGS}")