[LU-18522] clang: error: unknown argument: '-export-dynamic'

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.17.0
• Severity: 3
• Assignee: Sohei Koyama
• Reporter: Sohei Koyama

Description

This is an environment of kernel and Lustre which is built by clang instead of gcc on ubuntu24.04.

[    0.000000] Linux version 6.8.0-49-generic-clang-2 (ubuntu@u2404-srv1) (Ubuntu clang version 18.1.3 (1ubuntu1), Ubuntu LLD 18.1.3) #4 SMP PREEMPT_DYNAMIC Thu Dec  5 14:18:20 UTC 2024 (Ubuntu 6.8.0-49.49-generic 6.8.12) 

In addition to LU-18517 and LU-18518, there were other fixes needed on make

 

clang  -rdynamic -shared -export-dynamic \
         -o mount_osd_ldiskfs.so \
         `llvm-ar -t libmount_utils_ldiskfs.a` \
         -ldl   -lext2fs
libtool: link: clang -fPIC -D_GNU_SOURCE -D_LARGEFILE64_SOURCE=1 -D_FILE_OFFSET_BITS=64 -DLUSTRE_UTILS=1 -Wno-frame-address -o ll_decode_filter_fid ll_decode_filter_fid.o  -lkeyutils
libtool: link: clang -fPIC -D_GNU_SOURCE -D_LARGEFILE64_SOURCE=1 -D_FILE_OFFSET_BITS=64 -DLUSTRE_UTILS=1 -Wno-frame-address -o check_iam check_iam.o  -lkeyutils
libtool: link: clang -fPIC -D_GNU_SOURCE -D_LARGEFILE64_SOURCE=1 -D_FILE_OFFSET_BITS=64 -DLUSTRE_UTILS=1 -Wno-frame-address -rdynamic -o l_tunedisk l_tunedisk-l_tunedisk.o l_tunedisk-mount_utils.o  -lselinux -lmount ../../libcfs/libcfs/.libs/libcfs.a -ldl -lkeyutils
clang: error: unknown argument: '-export-dynamic'