cctools @949.0.1_1+llvm10: error: implicit declaration of function 'CLS_GETINFO' is invalid in C99

[jwoehr (Jack J. Woehr)]

macOS Monterey version 12.0.1 (21A559)

:info:build /usr/bin/clang -Os -std=gnu99 -Os -DLTO_SUPPORT -g -Wall -I./../include -I. -D_MACH_I386_THREAD_STATUS_FPSTATE_LEGACY_FIELD_NAMES_ -D_ARCHITECTURE_I386_FPU_FPSTATE_LEGACY_FIELD_NAMES_ -DEFI_SUPPORT -I/opt/local/include -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_cctools/cctools/work/cctools-949.0.1/../ld64-530/src/abstraction -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_cctools/cctools/work/cctools-949.0.1/../ld64-530/src/other -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_cctools/cctools/work/cctools-949.0.1/include -arch x86_64 -I/opt/local/libexec/llvm-10/include  -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS  -c -o ./print_objc2_64bit.o print_objc2_64bit.c
:info:build print_objc.c:639:21: error: implicit declaration of function 'CLS_GETINFO' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
:info:build                     if(verbose && CLS_GETINFO(&objc_class, CLS_META)){
:info:build                                   ^
:info:build print_objc.c:639:46: error: use of undeclared identifier 'CLS_META'
:info:build                     if(verbose && CLS_GETINFO(&objc_class, CLS_META)){
:info:build                                                            ^
:info:build print_objc.c:678:32: error: use of undeclared identifier 'CLS_CLASS'
:info:build                         if(CLS_GETINFO(&objc_class, CLS_CLASS))
:info:build                                                     ^
:info:build print_objc.c:680:37: error: use of undeclared identifier 'CLS_META'
:info:build                         else if(CLS_GETINFO(&objc_class, CLS_META))
:info:build                                                          ^
:info:build print_objc.c:770:37: error: use of undeclared identifier 'CLS_CLASS'
:info:build                     if(CLS_GETINFO((&objc_class), CLS_CLASS)){
:info:build                                                   ^
:info:build 5 errors generated.

[jwoehr (Jack J. Woehr)]

build log cctools-949.0.1

[ryandesign (Ryan Carsten Schmidt)]

llvm 10 predates macOS 12. Is it necessary to use the llvm10 variant?

The default is the xcode variant, which cannot fail, since it just installs symlinks to xcode tools and does not actually build anything, so I definitely recommend using that if possible.

The llvmdev variant may work better than the llvm10 variant, if using an llvm variant is necessary, since llvm-devel is newer than llvm 10. (The current version of llvm, released last month, is 13.)

[ryandesign (Ryan Carsten Schmidt)]

Duplicate of #63221.