building gcc14-libgcc14 using Macports + Apple clang
returns following error In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach/message.h:78, from /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach/arm/thread_status.h:40, from /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach/machine/thread_status.h:35, from /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach-o/loader.h:52, from /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach-o/dyld.h:30, from /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc14/libgcc14/work/gcc-14.2.0/libgcc/config/darwin-crt-tm.c:29: /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach/port.h:510:1: error: conflicting types for 'MPG_PAYLOAD'; have 'uint64_t(uint8_t, uint32_t, uint32_t)' {aka 'long long unsigned int(unsigned char, unsigned int, unsigned int)'} 510 | MPG_PAYLOAD(uint8_t flag, uint32_t a, uint32_t b) | ^~~~~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach/port.h:498:1: note: previous definition of 'MPG_PAYLOAD' with type 'uint64_t(uint8_t, uint32_t)' {aka 'long long unsigned int(unsigned char, unsigned int)'} 498 | MPG_PAYLOAD(uint8_t flag, uint32_t a) | ^~~~~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach/port.h:523:1: error: conflicting types for 'MPG_PAYLOAD'; have 'uint64_t(uint8_t, uint32_t, uint16_t, uint16_t)' {aka 'long long unsigned int(unsigned char, unsigned int, short unsigned int, short unsigned int)'} 523 | MPG_PAYLOAD(uint8_t flag, uint32_t a, uint16_t b, uint16_t c) | ^~~~~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk/usr/include/mach/port.h:498:1: note: previous definition of 'MPG_PAYLOAD' with type 'uint64_t(uint8_t, uint32_t)' {aka 'long long unsigned int(unsigned char, unsigned int)'} 498 | MPG_PAYLOAD(uint8_t flag, uint32_t a)
libgcxx compiles fine
if forcing compile using clang20/clang19 there is no error.
Please file a bug about this, including detailed instructions on how to reproduce it.
DTS doesn’t support GCC here on DevForums, but Apple does try to keep our headers compatible with it, so it’s worthwhile filing a bug about this regression in the macOS 26 beta SDK.
Please post your bug number, just for the record.
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