https://bugs.openldap.org/show_bug.cgi?id=10177

Issue ID: 10177 Summary: back-perl build for clang15 Product: OpenLDAP Version: 2.5.17 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: backends Assignee: bugs@openldap.org Reporter: hamano@osstech.co.jp Target Milestone: ---

back-perl cannot be built with clang15 on RHEL9. The following error occurs:

``` libtool: link: clang -shared -fPIC -DPIC .libs/init.o .libs/search.o .libs/close.o .libs/config.o .libs/bind.o .libs/compare.o .libs/modify.o .libs/add.o .libs/modrdn.o .libs/delete.o .libs/version.o -Wl,-rpath -Wl,/home/hamano/tmp/openldap-2.5.17/build-clang15/libraries/libldap/.libs -Wl,-rpath -Wl,/home/hamano/tmp/openldap-2.5.17/build-clang15/libraries/liblber/.libs -Wl,-rpath -Wl,/usr/local/lib -L/home/hamano/tmp/openldap-2.5.17/build-clang15/libraries/liblber/.libs -L/usr/local/lib -L/usr/lib64/perl5/CORE -lperl -lpthread -lresolv -ldl -lm -lcrypt -lutil ../../../libraries/libldap/.libs/libldap.so /home/hamano/tmp/openldap-2.5.17/build-clang15/libraries/liblber/.libs/liblber.so -lsasl2 -lssl -lcrypto ../../../libraries/liblber/.libs/liblber.so -g -O0 -Wl,--enable-new-dtags -Wl,-z -Wl,relro -Wl,--as-needed -Wl,-z -Wl,now -Wl,-z -Wl,relro -Wl,--as-needed -Wl,-z -Wl,now -fstack-protector-strong -Wl,-soname -Wl,back_perl-2.5.so.0 -o .libs/back_perl-2.5.so.0.1.12 .libs/init.o: file not recognized: file format not recognized clang-15: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [Makefile:348: back_perl.la] Error 1 make: Leaving directory '/home/hamano/tmp/openldap-2.5.17/build-clang15/servers/slapd/back-perl' ```

The cause is that the `-flto=auto` flag prevents the generation with ELF format.

``` $ file servers/slapd/back-perl/.libs/init.o servers/slapd/back-perl/.libs/init.o: LLVM IR bitcode ```

I'll open gitlab PR.