Hallo Cygwinners,
I'm trying to link a library with gcc -shared plus some ld options:
gcc -shared -o Zlib.dll -Wl,--out-implib=libZlib.dll.a -Wl,--output-def libZlib.def
-Wl,--export-all-symbols -Wl,--enable-auto-import \
-L/usr/local/lib Zlib.o
/usr/local/lib/perl5/5.7.2/cygwin-multi-64int/CORE/libperl.dll.a -L/usr/local/lib -lz
gcc: libZlib.def: No such file or directory
Now I'm getting this error.
I thought -Wl,--output-def name.def is the option to tell ld that it
should create this .def file, now I'm confused, why does it tell me
No such file or directory?
>From the ld --help output:
...
--out-implib <file> Generate import library
--output-def <file> Generate a .DEF file for the built DLL
...
And the .info says:
`--output-def FILE'
The linker will create the file FILE which will contain a DEF file
corresponding to the DLL the linker is generating. This DEF file
(which should be called `*.def') may be used to create an import
library with `dlltool' or may be used as a reference to
automatically or implicitly exported symbols.
It works well if I skip this flag.
It works well if I do a:
$ touch libZlib.def
before running gcc -shared.
Is this the expected way?
Do I have to create an empty .def file before linking?
Or is something with my setup broken?
Do I need .def files?
Gerrit
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