dosbox-x 0.83.14 - Build error at autogen stage: "31: error: required file 'minizip.pc.in' not found"

[GvMariani]

Describe the bug
Trying to build dosbox-x sources on x86_64, using gcc 11.1.0, autoconf 2.69 and automake 1.16.3.
The build process fails while running autogen.sh to generate the configure file, with this error message:
+ automake -a --foreign configure.ac:7: installing './compile' configure.ac:7: installing './config.guess' configure.ac:7: installing './config.sub' configure.ac:6: installing './install-sh' configure.ac:6: installing './missing' configure.ac:31: error: required file 'minizip.pc.in' not found Makefile.am: installing './depcomp'.

I noticed that minizip source are located in vs2015/zlib/contrib/minizip, so I guessed that it was mainly windows stuff and tried to work around the issue by simply creating an empy "minizip.pc.in" file in the above directory.
This allowed the build process to proceed a little further, until it stopped with a new error message:
+ automake -a --foreign configure.ac: error: no proper invocation of AM_INIT_AUTOMAKE was found. configure.ac: You should verify that configure.ac invokes AM_INIT_AUTOMAKE, configure.ac: that aclocal.m4 is present in the top-level directory, configure.ac: and that aclocal.m4 was recently regenerated (using aclocal) automake: error: no 'Makefile.am' found for any configure output.

To Reproduce
Steps to reproduce the behavior:

1. Take the sources and unpack them
2. In a console, go in the source dir
3. From here run "autogen.sh"
4. Look for the first error message

Expected behavior
Successfully build dosbox-x

Screenshots
N/A

Environment (please complete the following information):

• Operating system: ROSA Linux Fresh R11.1 (a niche Mandriva derivative)
• DOSBox-X release version this issue occurred on: 0.83.14 (sources from GitHub)
• Used configuration: N/A

Additional context
Complete log file with the original issue:
BuildError.txt

Complete log file after the (non-working) work-around:
BuildError2.txt