llvm-15 @15.0.7_1 +universal: ld: Assertion failed: (name != NULL) on 10.9 Mavericks when the linker has been manually set to ld64-xcode.

[ar-an-ribe]

On Mavericks, I currently have llvm-15 @15.0.7_0 +universal installed, and I’d like to build llvm-15 @15.0.7_1 +universal. About 5% of the way through the build, it attempts to link ../../../../bin/polly-isl-test, when an assertion fails in ld:

:info:build /opt/local/bin/clang-mp-13 -pipe -Os -DNDEBUG -D__DISABLE_MP_LEGACY_SUPPORT_SYSCONF_WRAP__=1 -D__DISABLE_MP_LEGACY_SUPPORT_REALPATH_WRAP__=1 -isystem/opt/local/include/LegacySupport -I/opt/local/include -fPIC -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wstring-conversion -Wmisleading-indentation -O3 -DNDEBUG -arch x86_64 -arch i386 -mmacosx-version-min=10.9 -Wl,-search_paths_first -Wl,-headerpad_max_install_names -L/opt/local/lib -Wl,-headerpad_max_install_names /opt/local/lib/libMacportsLegacySupport.a "CMakeFiles/polly-isl-test.dir/isl/isl_test.c.o" -o ../../../../bin/polly-isl-test  ../../../../lib/libPollyISL.a
:info:build 0  0x10ff110e7  __assert_rtn + 144
:info:build 1  0x10ff3e525  ld::Fixup::Fixup(unsigned int, ld::Fixup::Cluster, ld::Fixup::Kind, bool, char const*) + 107
:info:build 2  0x10ff1909d  mach_o::relocatable::Parser<x86_64>::addFixup(mach_o::relocatable::Parser<x86_64>::SourceLocation const&, ld::Fixup::Cluster, ld::Fixup::Kind, bool, char const*) + 33
:info:build 3  0x10ff149bd  mach_o::relocatable::Section<x86_64>::addRelocFixup(mach_o::relocatable::Parser<x86_64>&, macho_relocation_info<Pointer64<LittleEndian> > const*) + 1457
:info:build 4  0x10ff3a423  mach_o::relocatable::Section<x86_64>::makeFixups(mach_o::relocatable::Parser<x86_64>&, mach_o::relocatable::Parser<x86_64>::CFI_CU_InfoArrays const&) + 91
:info:build 5  0x10ff362b8  mach_o::relocatable::Parser<x86_64>::parse(mach_o::relocatable::ParserOptions const&) + 2028
:info:build 6  0x10ff1b9e2  mach_o::relocatable::Parser<x86_64>::parse(unsigned char const*, unsigned long long, char const*, long, ld::File::Ordinal, mach_o::relocatable::ParserOptions const&) + 374
:info:build 7  0x10ff48afc  archive::File<x86_64>::makeObjectFileForMember(archive::File<x86_64>::Entry const*) const + 752
:info:build 8  0x10ff4864e  archive::File<x86_64>::justInTimeforEachAtom(char const*, ld::File::AtomHandler&) const + 122
:info:build 9  0x10ff5da0b  ld::tool::InputFiles::searchLibraries(char const*, bool, bool, bool, ld::File::AtomHandler&) const + 219
:info:build 10  0x10ff657c4  ld::tool::Resolver::resolveUndefines() + 160
:info:build 11  0x10ff6792d  ld::tool::Resolver::resolve() + 79
:info:build 12  0x10ff11c47  main + 679
:info:build 13  0x7fff90f195fd  start + 1
:info:build     /tmp/-a27fea.out-2024-05-11-200852.ld-snapshot
:info:build ld: Assertion failed: (name != NULL), function Fixup, file /SourceCache/ld64/ld64-236.4/src/ld/ld.hpp, line 505.
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make[2]: *** [bin/polly-isl-test] Error 1
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_llvm-15/llvm-15/work/build'
:info:build make[1]: *** [tools/polly/lib/External/CMakeFiles/polly-isl-test.dir/all] Error 2
:info:build make[1]: *** Waiting for unfinished jobs....

The ld that its configure step found was the ld64 at /Library/Developer/CommandLineTools/usr/bin/ld (presumably found through xcrun, given the symbolic link chain that begins with /opt/local/bin/ld). Should its configure step have chosen a different ld, e.g. /opt/local/libexec/llvm-15/bin/ld64.lld?

[ar-an-ribe]

main.log for llvm-15 @15.0.7_1 +universal

[ar-an-ribe]

Per the recommendation in #70227, I’ve deactivated ld64 @3_6 +ld64_xcode+universal and installed ld64 @3_6 -ld64_274+universal in its place. The llvm-15 @15.0.7_1 +universal port now compiles without the failed assertion.