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X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Feb 2023 02:47:37.5340 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 34LDbM1k5foEbYG64HmpLK+9ZbMSOGFOQYroPGmKpXjvsgl/uvGQYnTKlD3m+o282kwo0uJR6ieeNOnQTmMaeGUu+1HCKHL8lMezPCVYrTE= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA2PR10MB4410 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-02-06_07,2023-02-06_03,2022-06-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 phishscore=0 spamscore=0 malwarescore=0 suspectscore=0 mlxscore=0 mlxlogscore=795 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302070022 X-Proofpoint-GUID: _EZGdM8OymgNdxlWQq3PzqsNSQ4rwRL3 X-Proofpoint-ORIG-GUID: _EZGdM8OymgNdxlWQq3PzqsNSQ4rwRL3 X-Spam-Status: No, score=-5.0 required=5.0 tests=BAYES_00,BODY_8BITS,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id:  Hello Linux Experts, The original problem is here: 30006 - Failure to build binutils-2.40 gprofng using gold https://sourceware.org/bugzilla/show_bug.cgi?id=30006 I prepared a small test that demonstrates the problem: % cat test.c void *dlopen (const char *pathname, int mode)   { return (void *) 0; } __attribute__ ((__symver__ ("dlopen@GLIBC_2.1"))) void *__collector_dlopen_2_1 (const char *pathname, int mode)   { return (void *) 0; } __attribute__ ((__symver__ ("dlopen@GLIBC_2.0"))) void *__collector_dlopen_2_0 (const char *pathname, int mode)   { return (void *) 0; } int main()   { return 0; } % cat map.txt GLIBC_2.0 {     global:        dlopen; }; GLIBC_2.1 {     global:         dlopen; }; There are no problems with -fuse-ld=bfd: % /opt/rh/gcc-toolset-10/root/bin/gcc -m32 test.c -Wl,--version-script -Wl,map.txt  -fuse-ld=bfd The output of `nm` shows exactly what I expected: % nm a.out | grep dlopen 08049191 T __collector_dlopen_2_0 08049187 T __collector_dlopen_2_1 0804917d t dlopen 08049191 t dlopen@GLIBC_2.0 08049187 t dlopen@GLIBC_2.1 But with -fuse-ld=gold: % /opt/rh/gcc-toolset-10/root/bin/gcc -m32 test.c -Wl,--version-script -Wl,map.txt  -fuse-ld=gold /bin/ld.gold: warning: /tmp/cc6YCOol.o: unknown program property type 0xc0010001 in .note.gnu.property section /bin/ld.gold: warning: using 'GLIBC_2.0' as version for 'dlopen' which is also named in version 'GLIBC_2.1' in script /bin/ld.gold: error: /tmp/cc6YCOol.o: multiple definition of 'dlopen' /bin/ld.gold: /tmp/cc6YCOol.o: previous definition here collect2: error: ld returned 1 exit status My questions: Is my test correct ? if not:   we need to interpose the dlopen functions from libdl.so.   How can I do it correctly ? If yes: Is this a known compiler bug in gold ? If not, do I need to create one ?   Is there a simple workaround ? Thank you, -Vladimir