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mold/test/as-needed-weak.sh
Rui Ueyama d3923b9f27 Weak symbols shouldn't keep as-needed DSOs
If all references to an DSO are weak, the DSO shouldn't be considered
being used in terms of --as-needed. This is needed for GNU ld compatibility.
2021-06-04 12:24:25 +09:00

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#!/bin/bash
set -e
cd $(dirname $0)
echo -n "Testing $(basename -s .sh $0) ... "
t=$(pwd)/tmp/$(basename -s .sh $0)
mkdir -p $t
cat <<EOF | cc -o $t/a.o -c -x assembler -
.text
.globl _start
_start:
.weak fn1
call fn1@PLT
EOF
cat <<EOF | cc -o $t/b.so -shared -fPIC -Wl,-soname,libfoo.so -xc -
int fn1() { return 42; }
EOF
cat <<EOF | cc -o $t/c.so -shared -fPIC -Wl,-soname,libbar.so -xc -
int fn2() { return 42; }
EOF
../mold -o $t/exe $t/a.o $t/b.so $t/c.so
readelf --dynamic $t/exe > $t/readelf
fgrep -q 'Shared library: [libfoo.so]' $t/readelf
fgrep -q 'Shared library: [libbar.so]' $t/readelf
../mold -o $t/exe $t/a.o --as-needed $t/b.so $t/c.so
readelf --dynamic $t/exe > $t/readelf
! fgrep -q 'Shared library: [libfoo.so]' $t/readelf || false
! fgrep -q 'Shared library: [libbar.so]' $t/readelf || false
echo OK