On Thu, 23 May 2019 at 19:35, D_Boy via D.gnu <d.gnu@puremagic.com> wrote:
>
> On Monday, 20 May 2019 at 15:19:27 UTC, Iain Buclaw wrote:
> > On Mon, 20 May 2019 at 12:50, D_Boy via D.gnu
> > <d.gnu@puremagic.com> wrote:
> >>
> >> On Monday, 20 May 2019 at 08:01:01 UTC, D_Boy wrote:
> >> > I am following Ali Çehreli's book. It says that
> >> > stdout.write()
> >> > should work the same as write()
> >> >
> >> > In DMD it works. But when trying to compile with GDC I get
> >> > the following error:
> >> >
> >> > gdc anApp.d -o anApp && ./anApp
> >> > /usr/bin/ld: /tmp/cc5zJLcW.o: in function `_Dmain':
> >> > anApp.d:(.text+0x32): undefined reference to
> >> > `_D3std5stdio24__T10makeGlobalS6stdoutZ10makeGlobalFNbNcNdNiZS3std5stdio4File'
> >> > collect2: error: ld returned 1 exit status
> >> >
> >> >
> >> > Could you please tell me what could be wrong?
> >> >
> >> > I am using DMD64 2.086.0 and gdc (Ubuntu 8.3.0-6ubuntu1)
> >> > 8.3.0
> >> > on Ubuntu 19.04/64.
> >>
> >> Update: the hello world program works fine. Problem appears
> >> when
> >> I add readf(" %s", &variable)
> >
> > $ gdc-8 test.d -o shared
> > $ nm shared | grep
> > _D3std5stdio24__T10makeGlobalS6stdoutZ10makeGlobalFNbNcNdNiZS3std5stdio4File
> > U
> > _D3std5stdio24__T10makeGlobalS6stdoutZ10makeGlobalFNbNcNdNiZS3std5stdio4File
> > $ objdump -T /usr/lib/x86_64-linux-gnu/libgphobos.so.76 | grep
> > _D3std5stdio24__T10makeGlobalS6stdoutZ10makeGlobalFNbNcNdNiZS3std5stdio4File
> > 000000000034c610 w DF .text 0000000000000070 Base
> > _D3std5stdio24__T10makeGlobalS6stdoutZ10makeGlobalFNbNcNdNiZS3std5stdio4File
> >
> > $ gdc-8 test.d -o static -static-libphobos
> > ibuclaw@labs-322:~ $ nm static | grep
> > _D3std5stdio24__T10makeGlobalS6stdoutZ10makeGlobalFNbNcNdNiZS3std5stdio4File
> > 000000000002e720 W
> > _D3std5stdio24__T10makeGlobalS6stdoutZ10makeGlobalFNbNcNdNiZS3std5stdio4File
> >
> > Can't reproduce, but then again one can't second guess what
> > code you have.
> >
> > In all likelihood you're linking against the wrong library.
>
>
> Hi! Thanks for your reply!
>
> Here is the not working code(same error as above when trying with
> GDC):
>
> import std.stdio;
>
>
> void main(){
>
> int a, b, c;
> writeln("Insert three numbers each one followed by hitting
> Enter key");
> readf(" %s", a);
> readf(" %s", b);
> readf(" %s", c);
>
> if ( a < b && b < c)
> writeln(a, b, c);
> if ( a > b && b > c)
> writeln(c, b, a);
> if ( a < c && c < b)
> writeln(a, c, b);
> if ( b < a && a < c)
> writeln(b, a, c);
> if ( b < c && c < a)
> writeln(b, c, a);
> if (a == b && b == c)
> writeln(a, b, c);
> if ( a == b && b < c)
> writeln(a, b, c);
> if ( a == b && b > c)
> writeln(c, b, a);
> if ( a == c && c < b)
> writeln(a, c, b);
> if ( a == c && c > b)
> writeln(b, c, a);
> }
>
>
> I am thinking too the problem is a library linking. Is there
> anyway to find the wrong linking?
>
> Also, here is the command I am using to compile in GDC:
>
> gdc main.d -o main && ./main
>
> I tried also only to compile it: gdc main.d -o main but got the
> same error.
>
> I mention again: no problem at all in DMD.
And what happens when you compile with -static-libphobos?
This confirms whether you are indeed linking against the wrong library or not.
--
Iain
