mirror of
https://github.com/Droid-Deck/DroidDeck.git
synced 2026-10-14 19:27:09 -04:00
MaxsTechReview
0e225d0c6e
Preload the FEX fault report only where x86 loaders look droiddeck-fex put the x86 libfaultreport.so in LD_PRELOAD, which FEX's own arm64 loader reads too - and FEXServer's, and every child FEX's - so each x86 start printed "ERROR: ld.so: object '.../libfaultreport.so' from LD_PRELOAD cannot be preloaded", and an i386 child added "wrong ELF class". It is now listed in the x86 runtime's own /etc/ld.so.preload, which only the loaders inside FEX read, as /usr/$LIB/droiddeck/libfaultreport.so. faultreport.c builds for i386 too, so 32-bit programs get the report as well instead of an error.
54 lines
2.2 KiB
Bash
Executable File
54 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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out=${1:?usage: build-x86-preloads.sh <linuxfs asset directory>}
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for arch in x86_64 i386; do
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case $arch in
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x86_64) bits=-m64 ;;
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i386) bits=-m32 ;;
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esac
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mkdir -p "$out/$arch"
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gcc $bits -shared -fPIC -O2 -Wall -pthread \
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-o "$out/$arch/libblsession.so" tools/linuxfs/preload/*.c -ldl
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g++ $bits -shared -fPIC -O2 -Wall -Wno-attributes -Wno-nonnull-compare \
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-pthread -std=c++17 -static-libstdc++ -static-libgcc -Wl,--exclude-libs,ALL \
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-o "$out/$arch/libfakeinput.so" app/src/main/cpp/fakeinput_steam.cpp -ldl
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strip --strip-unneeded "$out/$arch/libblsession.so" "$out/$arch/libfakeinput.so"
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for lib in "$out/$arch/libblsession.so" "$out/$arch/libfakeinput.so"; do
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newest=$(objdump -T "$lib" | grep -o 'GLIBC_2\.[0-9]*' | sort -u -t. -k2,2n | tail -1)
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minor=${newest#GLIBC_2.}
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if [ "$minor" -gt 31 ]; then
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echo "$lib needs $newest; Steam Linux Runtime 3.0 has glibc 2.31" >&2
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exit 1
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fi
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if objdump -p "$lib" | grep -q 'NEEDED.*lib\(stdc++\|gcc_s\)'; then
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echo "$lib links the C++ runtime dynamically" >&2
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exit 1
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fi
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done
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done
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for target in x86_64/faultreport i386/faultreport x86_64/thunkaudit; do
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arch=${target%/*} name=${target#*/}
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case $arch in
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x86_64) bits=-m64 ;;
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i386) bits=-m32 ;;
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esac
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lib=$out/$arch/lib$name.so
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gcc $bits -shared -fPIC -O2 -Wall -Wextra -nostdlib -fno-stack-protector -fno-builtin -fvisibility=hidden \
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-o "$lib" tools/linuxfs/fex/$name.c
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strip --strip-unneeded "$lib"
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if objdump -p "$lib" | grep -q NEEDED || [ -n "$(nm -D --undefined-only "$lib" 2>/dev/null)" ]; then
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echo "$lib must not need any library" >&2
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exit 1
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fi
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done
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stub=$(mktemp -d)
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gcc -m64 -shared -nostdlib -Wl,-soname,/usr/lib/x86_64-linux-gnu/libvulkan.so.1 -o "$stub/libvulkan.so.1" -x c /dev/null
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gcc -m64 -shared -nostdlib -Wl,-z,nodelete -Wl,--no-as-needed \
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-o "$out/x86_64/libvulkan-thunk.so" -x c /dev/null -x none "$stub/libvulkan.so.1"
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rm -rf "$stub"
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if ! objdump -p "$out/x86_64/libvulkan-thunk.so" | grep -q 'NEEDED *\/usr/lib/x86_64-linux-gnu/libvulkan\.so\.1$' \
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|| ! objdump -p "$out/x86_64/libvulkan-thunk.so" | grep -q 'FLAGS_1 *0x0*8$'; then
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echo "$out/x86_64/libvulkan-thunk.so must be nodelete and need only the Vulkan thunk" >&2
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exit 1
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fi
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