dev-cpp-users

[Dev-C++] Using gcc -shared instead of dllwrap

[Mario B. <st...@vi...>]

Hi all,

I have seen everywhere that the use of dllwrap is deprecated and that we should use gcc -shared to
create dlls. However, I cannot find a way to tell Dev-cpp to do that. Putting "gcc -shared" in the
dllwrap entry of Tools/Compiler Options/Programs works but the generated linker line is not correct:

gcc.exe -shared --output-def ../../../.libs/libgeotiff.def --implib ../../../.libs/libgeotiff.a
(objects) -Wl,-output-def libgeotiff.def,-out-implib libgeotiff.a  -o ../../../.libs/geotiff.dll

The -Wl options should replace the --output-def and --implib and should precede everything. I can't
figure out how and from where Dev-cpp adds those options. Besides hacking the Makefile.win directly,
I don't how it can be done.

Any thoughts?
--
Mario B.
My Landsat images:
http://pages.infinit.net/starged/landsat/home.html

Re: [Dev-C++] Using gcc -shared instead of dllwrap

[Mario B. <st...@vi...>]

Hi again,

>(objects) -Wl,-output-def libgeotiff.def,-out-implib libgeotiff.a  -o ../../../.libs/geotiff.dll

Of course, this should be -Wl,-output-def,libgeotiff.def,-out-implib,libgeotiff.a...
Anyway, it's not the problem :)
--
Mario B.
My Landsat images:
http://pages.infinit.net/starged/landsat/home.html

Re: [Dev-C++] Using gcc -shared instead of dllwrap

[<or...@vp...>]

Mario Beauchamp wrote:
>>(objects) -Wl,-output-def libgeotiff.def,-out-implib libgeotiff.a  -o .=
./../../.libs/geotiff.dll
>=20
> Of course, this should be -Wl,-output-def,libgeotiff.def,-out-implib,li=
bgeotiff.a...
> Anyway, it's not the problem :)

I think there is no way to tell Dev-C++ to use g++ -shared. I tried it=20
desparately some time ago.
I read something about the new release of Dev-C++, that it uses new=20
tools of MinGW, however I haven't tried it yet. Perhaps they switched to=20
g++ -shared?
Anyway, as for your release, you have to live with dllwrap.
BTW, g++ -shared is *MUCH* faster (10 to 20 times) and is the right way=20
of creating DLLs, since almost 3 years. I don't know why didn't the devs=20
of Dev-C++ change it...

--
Greetings,
   Bal=E1zs

Re: [Dev-C++] Using gcc -shared instead of dllwrap

[Mario B. <st...@vi...>]

Hi OROSZI,

On Thu, 26 Feb 2004 22:23:27 +0100, OROSZI Bal=E1zs =
<or...@vp...> wrote:

>I read something about the new release of Dev-C++, that it uses new=20
>tools of MinGW, however I haven't tried it yet. Perhaps they switched to=
 g++ -shared?

I don't know. Since v 4.8.4 or so, I d/l only the exe (since the online =
update always fail). Anyway,
I would be surprised if this mattered. And I have the latest MinGW tools.

>Anyway, as for your release, you have to live with dllwrap.

Not necessarily, see below...

>BTW, g++ -shared is *MUCH* faster (10 to 20 times) and is the right way=20
>of creating DLLs, since almost 3 years. I don't know why didn't the devs=
=20
>of Dev-C++ change it...

I don't even know if they are monitoring that particular ml (are you, =
guys?)... we don't see too
many replies from them here. And you're right, the speed is amazing!

The only workaround is to let Dev-cpp generate the Makefile.win as usual =
and then edit the $(BIN)
line in this file as follows:

$(BIN): $(LINKOBJ)
	$(DLLWRAP) -Wl,-output-def,$(DEFFILE) -Wl,-out-implib,$(STATICLIB) =
$(LINKOBJ) $(LIBS) -o
$(BIN)

and then save it under another name and make the project use it.

Of course, DLLWRAP=3Dgcc -shared...

Bye!
--
Mario B.
My Landsat images:
http://pages.infinit.net/starged/landsat/home.html