25 lines
904 B
Bash
25 lines
904 B
Bash
#!/usr/bin/env bash
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PREFIX=$1
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INPUT_LIB=$2
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OUTPUT_LIB=$3
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if [ "$#" -ne 3 ]; then
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echo "Usage: $0 <prefix> <input_lib.a> <output_lib.a>"
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exit 1
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fi
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echo "Redefining symbols from $INPUT_LIB into $OUTPUT_LIB..."
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xtensa-esp-elf-objcopy --redefine-syms=<(
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# Perform set subtraction of undefined symbols and defined symbols, to get globally undefined symbols.
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comm -23 \
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<(xtensa-esp-elf-nm --undefined-only "$INPUT_LIB" | awk '{print $NF}' | sort -u) \
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<(xtensa-esp-elf-nm --defined-only "$INPUT_LIB" | awk '{print $NF}' | sort -u) | \
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# Do not prefix already prefixed symbols (idempotency)
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grep -v "^${PREFIX}" | \
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# Print each symbol followed by the symbol with the prefix
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awk -v p="$PREFIX" '{print $1 " " p $1}'
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) "$INPUT_LIB" "$OUTPUT_LIB"
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echo "Prefixed all externally linked symbols in $INPUT_LIB with $PREFIX, and written the result to: $OUTPUT_LIB"
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