clang-17 build fails on Sequoia

[jwhowarth]

In attempting to install apbs, I discovered that the clang-17 build fails as follows...

/Library/Developer/CommandLineTools/usr/bin/clang -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -DL_cas -DMODEL=2 -DSIZE=1 -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-17/clang-17/work/llvm-project-17.0.6.src/compiler-rt/lib/builtins -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-17/clang-17/work/build/projects/compiler-rt/lib/builtins -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-17/clang-17/work/llvm-project-17.0.6.src/compiler-rt/lib/builtins -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-17/clang-17/work/build/include -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-17/clang-17/work/llvm-project-17.0.6.src/llvm/include -O3 -DNDEBUG -arch arm64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -mmacosx-version-min=10.7 -fPIC -O3 -fvisibility=hidden -DVISIBILITY_HIDDEN -Wall -fomit-frame-pointer -DHAS_ASM_LSE -Werror=format-nonliteral -DDONT_DEFINE_EPRINTF -arch arm64 -target arm64-apple-macos10.7 -darwin-target-variant arm64-apple-ios13.1-macabi -MD -MT projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins_arm64_osx.dir/outline_atomic_helpers.dir/outline_atomic_cas1_2.S.o -MF projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins_arm64_osx.dir/outline_atomic_helpers.dir/outline_atomic_cas1_2.S.o.d -o projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins_arm64_osx.dir/outline_atomic_helpers.dir/outline_atomic_cas1_2.S.o -c /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-17/clang-17/work/build/projects/compiler-rt/lib/builtins/outline_atomic_helpers.dir/outline_atomic_cas1_2.S
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-17/clang-17/work/build/projects/compiler-rt/lib/builtins/outline_atomic_helpers.dir/outline_atomic_cas1_2.S:145:116: error: non-private labels cannot appear between .cfi_startproc / .cfi_endproc pairs
 .text %% .balign 16 %% .globl __aarch64_cas1_acq %% %% .private_extern __aarch64_cas1_acq %% %% .cfi_startproc %% __aarch64_cas1_acq: %%
                                                                                                                   ^
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-17/clang-17/work/build/projects/compiler-rt/lib/builtins/outline_atomic_helpers.dir/outline_atomic_cas1_2.S:145:98: error: previous .cfi_startproc was here
 .text %% .balign 16 %% .globl __aarch64_cas1_acq %% %% .private_extern __aarch64_cas1_acq %% %% .cfi_startproc %% __aarch64_cas1_acq: %%

The clang-18 build doesn't have this problem.