Install error: variable has incomplete type 'struct stat64'

[Robert-Murphy]

Hi, Attempting to install rpm on Big Sur with M1 chip via HomeBrew.
Initially getting "Error: rpm: no bottle available"

I have since tried both of the following commands:
brew install --build-from-source rpm and brew install rpm --build-bottle

Both give me the following error:

robertmurphy@ALT-RM-13205 Repositories % brew install --build-from-source rpm
==> Downloading http://ftp.rpm.org/releases/rpm-4.16.x/rpm-4.16.1.3.tar.bz2
Already downloaded: /Users/robertmurphy/Library/Caches/Homebrew/downloads/490bdabcf09ad0ae5e0dc4820a86faad5112c2470621cb3153e74a4003d3776c--rpm-4.16.1.3.tar.bz2
==> ./configure --prefix=/opt/homebrew/Cellar/rpm/4.16.1.3 --localstatedir=/opt/homebrew/var --sharedstatedir=/opt/homebrew/var/lib --sysconfdir=/opt/homebrew/etc --with-path-magic=/o
==> make install
Last 15 lines from /Users/robertmurphy/Library/Logs/Homebrew/rpm/02.make:
/bin/sh ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I.. -I.. -I../include -I../misc -I/opt/homebrew/opt/lua/include/lua -I/opt/homebrew/Cellar/openssl@1.1/1.1.1k/include -g -O2 -c -o fts.lo fts.c
/bin/sh ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I.. -I.. -I../include -I../misc -I/opt/homebrew/opt/lua/include/lua -I/opt/homebrew/Cellar/openssl@1.1/1.1.1k/include -g -O2 -c -o fnmatch.lo fnmatch.c
libtool: compile: clang -DHAVE_CONFIG_H -I.. -I.. -I../include -I../misc -I/opt/homebrew/opt/lua/include/lua -I/opt/homebrew/Cellar/openssl@1.1/1.1.1k/include -g -O2 -c fnmatch.c -fno-common -DPIC -o .libs/fnmatch.o
libtool: compile: clang -DHAVE_CONFIG_H -I.. -I.. -I../include -I../misc -I/opt/homebrew/opt/lua/include/lua -I/opt/homebrew/Cellar/openssl@1.1/1.1.1k/include -g -O2 -c fts.c -fno-common -DPIC -o .libs/fts.o
fts.c:1120:16: error: variable has incomplete type 'struct stat64'
struct stat64 sb;
^
fts.c:1120:9: note: forward declaration of 'struct stat64'
struct stat64 sb;
^
1 error generated.
make[2]: *** [fts.lo] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [install-recursive] Error 1
make: *** [install] Error 2

Can anybody help me with this please?
Let me know if any more information is required. Thanks

[ffesti]

The compiler is tripping over this line https://github.com/rpm-software-management/rpm/blob/master/misc/fts.c#L1124

The file is the implementation for the fts functions for systems not supporting them. So the actual issue is that your system is not (yet) taking into account at the top of the file where stat64 is redefined as stat for systems that don't support stat64 and fstat64. You might want to add a section there are modify the behaviour to match your system.

[ffesti]

OK, to be more clear: This needs to be fixed by someone with such machine at hand. It shoudn't be too hard. Patches are welcome.

[MagicTmac1]

how to solve the problem?