mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 08:02:44 +00:00
24 lines
1.2 KiB
Bash
Executable file
24 lines
1.2 KiB
Bash
Executable file
#!/bin/sh
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script_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
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cd "$script_path/.." || exit 1
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# The __cxa_guard_* calls are generated for (non trivial) initialization of local static objects.
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# These symbols are OK to use within serenity code, but they are problematic in LibC because their
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# existence breaks ports (the implementation of these symbols resides in libstdc++.a which we do not link against in ports).
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# To eliminate the need for these symbols, avoid doing non-trivial construction of local statics in LibC.
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FORBIDDEN_SYMBOLS="__cxa_guard_acquire __cxa_guard_release"
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LIBC_PATH="Build/Userland/Libraries/LibC/libc.a"
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for forbidden_symbol in $FORBIDDEN_SYMBOLS; do
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# check if there's an undefined reference to the symbol & it is not defined anywhere else in the library
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nm $LIBC_PATH | grep "U $forbidden_symbol"
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APPEARS_AS_UNDEFINED=$?
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nm $LIBC_PATH | grep "T $forbidden_symbol"
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APPEARS_AS_DEFINED=$?
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if [ $APPEARS_AS_UNDEFINED -eq 0 ] && [ ! $APPEARS_AS_DEFINED -eq 0 ]; then
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echo "Forbidden undefined symbol in LibC: $forbidden_symbol"
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echo "See comment in Meta/check-symbols.sh for more info"
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exit 1
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fi
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done
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