https://sourceware.org/bugzilla/show_bug.cgi?id=18859
Bug ID: 18859
Summary: Gold linker does not fully respect -no-as-needed
Product: binutils
Version: 2.26 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gold
Assignee: ccoutant at gmail dot com
Reporter: eugeni.stepanov at gmail dot com
CC: ian at airs dot com
Target Milestone: ---
Gold and ld behave differently when a shared library is first mentioned when
-as-needed is in effect, and then again after -no-as-needed. Ld generates a
DT_NEEDED entry for such library, and gold does not.
$ cat 1.c
int main() { return 0; }
# BFD linker
$ g++ 1.c -Wl,-as-needed -lutil -Wl,-no-as-needed -lutil -fuse-ld=bfd &&
readelf -d a.out | grep NEEDED
0x0000000000000001 (NEEDED) Shared library: [libutil.so.1]
0x0000000000000001 (NEEDED) Shared library: [libstdc++.so.6]
0x0000000000000001 (NEEDED) Shared library: [libm.so.6]
0x0000000000000001 (NEEDED) Shared library: [libgcc_s.so.1]
0x0000000000000001 (NEEDED) Shared library: [libc.so.6]
# Gold linker
$ g++ 1.c -Wl,-as-needed -lutil -Wl,-no-as-needed -lutil -fuse-ld=gold &&
readelf -d a.out | grep NEEDED
0x0000000000000001 (NEEDED) Shared library: [libstdc++.so.6]
0x0000000000000001 (NEEDED) Shared library: [libm.so.6]
0x0000000000000001 (NEEDED) Shared library: [libgcc_s.so.1]
0x0000000000000001 (NEEDED) Shared library: [libc.so.6]
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