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Windows package: add comment on -fstack-protector-{strong,all} with Debian cross-compiler

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Sébastien Villemot 2023-03-14 16:43:21 +01:00
parent 9527624b8c
commit dd93aa3cd8
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1 changed files with 4 additions and 1 deletions
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windows/build.sh
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@ -59,7 +59,10 @@ LIB64_MSYS2="$ROOT_DIRECTORY"/deps/lib64-msys2
# As of 2023-01-03, when linking against HDF5 (and possibly other libraries),
# it is necessary to compile our own code with -fstack-protector to avoid undefined symbols
# at link time.
# Note that adding this flag is not necessary when building from MSYS2 shell.
# Note that specifying -fstack-protector-strong or -fstack-protector-all will lead
# to a dependency on libssp-0.dll (at least when using the MinGW compilers from Debian),
# and there seems to be no easy way of linking it statically.
# Also note that adding this flag is not necessary when building from MSYS2 shell.
# Maybe revisit this once our runners are upgraded to Debian “Bookworm” 12.
export CXXFLAGS="-O2 -fstack-protector"