mold/test/elf/as-needed-weak.sh

#!/bin/bash
export LC_ALL=C
set -e
CC="${TEST_CC:-cc}"
CXX="${TEST_CXX:-c++}"
GCC="${TEST_GCC:-gcc}"
GXX="${TEST_GXX:-g++}"
OBJDUMP="${OBJDUMP:-objdump}"
MACHINE="${MACHINE:-$(uname -m)}"
testname=$(basename "$0" .sh)
echo -n "Testing $testname ... "
t=out/test/elf/$MACHINE/$testname
mkdir -p $t

cat <<EOF | $CC -fPIC -o $t/a.o -c -xc -
__attribute__((weak)) int fn1();

int main() {
  fn1();
}
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

$CC -B. -o $t/exe $t/a.o -Wl,-no-as-needed $t/b.so $t/c.so

readelf --dynamic $t/exe > $t/readelf
grep -Fq 'Shared library: [libfoo.so]' $t/readelf
grep -Fq 'Shared library: [libbar.so]' $t/readelf

$CC -B. -o $t/exe $t/a.o -Wl,-as-needed $t/b.so $t/c.so

readelf --dynamic $t/exe > $t/readelf
! grep -Fq 'Shared library: [libfoo.so]' $t/readelf || false
! grep -Fq 'Shared library: [libbar.so]' $t/readelf || false

echo OK