21 lines
758 B
Bash
21 lines
758 B
Bash
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#! /usr/bin/env bash
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# Before a shared module's DSO is produced, a static library is built for it
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# and passed to this script. The script generates -Wl,-u options to force
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# the inclusion of symbol from libqemuutil.a if the shared modules need them,
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# This is necessary because the modules may use functions not needed by the
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# executable itself, which would cause the function to not be linked in.
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# Then the DSO loading would fail because of the missing symbol.
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if test $# -le 2; then
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exit 0
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fi
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NM=$1
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staticlib=$2
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shift 2
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# Find symbols defined in static libraries and undefined in shared modules
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comm -12 \
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<( $NM -P -g $staticlib | awk '$2!="U"{print "-Wl,-u," $1}' | sort -u) \
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<( $NM -P -g "$@" | awk '$2=="U"{print "-Wl,-u," $1}' | sort -u)
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