ada gnat import library missing ?

[Marco Atzeri <marco.atzeri@gmail.com>]

Jon,
the simple hello program
https://gcc.gnu.org/onlinedocs/gnat_ugn/Running-a-Simple-Ada-Program.html

with shared option fails

$ gnatbind -v -shared hello 
gnatbind -v -shared hello
GNATBIND 6.4.0
Copyright (C) 1995-2016, Free Software Foundation, Inc.
Binding: hello.ali
No errors

$ gnatlink -v -shared hello
GNATLINK 6.4.0
Copyright (C) 1995-2016, Free Software Foundation, Inc.
gcc -c -mtune=generic -march=x86-64 -gnatA -gnatWb -gnatiw -gnatws 
/tmp/ada/b~hello.adb
/usr/bin/gcc.exe b~hello.o ./hello.o -shared -o hello.exe -L./ 
-L/usr/lib/gcc/x86_64-pc-cygwin/6.4.0/adalib/ -lgnat-6 
-Wl,--stack=0x2000000 -shared-libgcc
/usr/lib/gcc/x86_64-pc-cygwin/6.4.0/../../../../x86_64-pc-cygwin/bin/ld: 
cannot find -lgnat-6
collect2: error: ld returned 1 exit status
gnatlink: error when calling /usr/bin/gcc.exe


as I do not find any import library for
/usr/bin/cyggnat-6.dll

can you check ?

Regards
Marco

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