updating make from 4.2.1-1 to 4.3-1 breaks mame build

[belegdol]

Hello,
I have originally reported this to mame team:
mamedev/mame#6248
After updating make to 4.3 mame build fails at ar stage:

$ LANG=C make VERBOSE=1 SUBTARGET=tiny TOOLS=1 OPTIMIZE=2 -j12
GCC 9.2.0 detected
make -R verbose=1 -C build/projects/windows/mametiny/gmake-mingw64-gcc config=release64 WINDRES=/mingw64/bin/windres precompile
make[1]: Entering directory '/c/Users/beleg/source/repos/belegdol/mame/build/projects/windows/mametiny/gmake-mingw64-gcc'
make[1]: Leaving directory '/c/Users/beleg/source/repos/belegdol/mame/build/projects/windows/mametiny/gmake-mingw64-gcc'
make -R verbose=1 -C build/projects/windows/mametiny/gmake-mingw64-gcc config=release64 WINDRES=/mingw64/bin/windres
make[1]: Entering directory '/c/Users/beleg/source/repos/belegdol/mame/build/projects/windows/mametiny/gmake-mingw64-gcc'
Archiving libemu.a...
rm -f "../../../../mingw-gcc/bin/x64/Release/libemu.a"
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ar.exe: ../../../../mingw-gcc/bin/x64/Release/libemu.a../../../../mingw-gcc/obj/x64/Release/src/emu/addrmap.o: No such file or directory
make[2]: *** [emu.make:932: ../../../../mingw-gcc/bin/x64/Release/libemu.a] Error 1
make[1]: *** [Makefile:88: emu] Error 2
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/c/Users/beleg/source/repos/belegdol/mame/build/projects/windows/mametiny/gmake-mingw64-gcc'
make: *** [makefile:1076: windows_x64] Error 2

It appears to me that there is a space missing between libemu.a and the path leading to addrmap.o. In order to reproduce it, one needs to install msys2, clone mame repository, run mingw64, cd into the checked out tree and run:

$ export MINGW64=/mingw64
$ make VERBOSE=1 SUBTARGET=tiny TOOLS=1 OPTIMIZE=2 -j12

[lazka]

The make release notes mention some backwards incompatible changes related to no longer adding spaces in some cases: https://lwn.net/Articles/810071/

Maybe you can check if this is the problem here.

[lazka]

Looks like this is fixed upstream now?

[belegdol]

Yes it is, apologies for the delay.

[lazka]

ok, thanks for the update!