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small writeup of wasm

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lizzie 2026-06-09 05:14:36 +00:00
parent e5fd0b8ef5
commit 11280e18d3
5 changed files with 40 additions and 10 deletions
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15
.ci/wasm/build.sh
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@ -54,6 +54,15 @@ done
: "${DEVEL:=true}"
: "${OUTDIR:=build}"
# -sMEMORY64 must be specified twice, see below
# The CMake toolchain file will match against MEMORY64 but will fail to match if:
# - it's either -sMEMORY64
# - or it's either -sMEMORY64=1
# The line in question:
# if (CMAKE_C_FLAGS MATCHES "MEMORY64")
# However why need to specify -sMEMORY64=1 then? Oh that's because if you didn't set
# the =1, it would assume you meant =0, which equates to not specifying it at all
# This seems to be fixed in later versions but occurs atleast on 4.0.3-git and below.
emcmake cmake -B "$OUTDIR" -G "Unix Makefiles" \
-DCMAKE_BUILD_TYPE=${TYPE} \
-DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
@ -75,8 +84,8 @@ emcmake cmake -B "$OUTDIR" -G "Unix Makefiles" \
-DEMSCRIPTEN_SYSTEM_PROCESSOR=wasm \
-DCMAKE_C_FLAGS="-s MEMORY64 -m64 -pipe -sMEMORY64=1" \
-DCMAKE_CXX_FLAGS="-s MEMORY64 -m64 -pipe -sMEMORY64=1" \
-DCMAKE_EXE_LINKER_FLAGS="-sMEMORY64=1 -m64 -Wl,-mwasm64 -sASYNCIFY=1" \
-DCMAKE_C_LINK_FLAGS="-sMEMORY64=1 -m64 -Wl,-mwasm64 -sASYNCIFY=1" \
-DCMAKE_CXX_LINK_FLAGS="-sMEMORY64=1 -m64 -Wl,-mwasm64 -sASYNCIFY=1" \
-DCMAKE_EXE_LINKER_FLAGS="-sMEMORY64=1 -m64 -Wl,-mwasm64 -sASYNCIFY=1 -pthread" \
-DCMAKE_C_LINK_FLAGS="-sMEMORY64=1 -m64 -Wl,-mwasm64 -sASYNCIFY=1 -pthread" \
-DCMAKE_CXX_LINK_FLAGS="-sMEMORY64=1 -m64 -Wl,-mwasm64 -sASYNCIFY=1 -pthread" \
cmake --build "$OUTDIR" -- -j$NUM_JOBS