Error message I receive doing a make -flinux.mak on a Ubuntu 10.10 64-bit installation:

/usr/bin/ld: cannot find -lstdc++

This happens whether I build DMD as a 32- or 64-bit binary.  I know I managed to fix this somehow previously, probably by changing the makefile to point to a specific libstdc++.  However, I'm sure I have libstdc++ installed via Ubuntu's package manager (the default, not sure of the details), and the build process really needs to "just work" on standard installs of popular distros.

--David Simcha
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I suspect you're missing the 32bit multilib bits

apt-get install g++-multilib

That will likely pull in all the packages you need.

On 1/2/2011 1:06 PM, David Simcha wrote:
> Error message I receive doing a make -flinux.mak on a Ubuntu 10.10 64-bit installation:
> 
> /usr/bin/ld: cannot find -lstdc++
> 
> This happens whether I build DMD as a 32- or 64-bit binary.  I know I managed to fix this somehow previously, probably by changing the makefile to point to a specific libstdc++.  However, I'm sure I have libstdc++ installed via Ubuntu's package manager (the default, not sure of the details), and the build process really needs to "just work" on standard installs of popular distros.
> 
> --David Simcha
> 
> 
> 
> _______________________________________________
> dmd-internals mailing list
> dmd-internals at puremagic.com
> http://lists.puremagic.com/mailman/listinfo/dmd-internals

Nope.

1.  That package was already installed.

2.  I also installed it for a few other versions of GCC just to see if that helped.

3.  Using MODEL=-m64 should make multilib irrelevant.  The build fails regardless of which model I build with.

On 1/2/2011 4:15 PM, Brad Roberts wrote:
> I suspect you're missing the 32bit multilib bits
>
> apt-get install g++-multilib
>
> That will likely pull in all the packages you need.
>
> On 1/2/2011 1:06 PM, David Simcha wrote:
>> Error message I receive doing a make -flinux.mak on a Ubuntu 10.10 64-bit installation:
>>
>> /usr/bin/ld: cannot find -lstdc++
>>
>> This happens whether I build DMD as a 32- or 64-bit binary.  I know I managed to fix this somehow previously, probably by changing the makefile to point to a specific libstdc++.  However, I'm sure I have libstdc++ installed via Ubuntu's package manager (the default, not sure of the details), and the build process really needs to "just work" on standard installs of popular distros.
>>
>> --David Simcha
>>
>>
>>
>> _______________________________________________
>> dmd-internals mailing list
>> dmd-internals at puremagic.com
>> http://lists.puremagic.com/mailman/listinfo/dmd-internals
> _______________________________________________
> dmd-internals mailing list
> dmd-internals at puremagic.com
> http://lists.puremagic.com/mailman/listinfo/dmd-internals
>

Ok, if libstdc++ isn't being found, you're missing a key element of a working gcc c++ compiler somehow.

>From my 64bit dev box:
$ ls -1 /var/lib/dpkg/info/*++*.list /var/lib/dpkg/info/g++-4.4.list /var/lib/dpkg/info/g++-4.4-multilib.list /var/lib/dpkg/info/g++-4.5.list /var/lib/dpkg/info/g++-4.5-multilib.list /var/lib/dpkg/info/g++.list /var/lib/dpkg/info/g++-multilib.list /var/lib/dpkg/info/lib32stdc++6.list /var/lib/dpkg/info/libstdc++6-4.4-dev.list /var/lib/dpkg/info/libstdc++6-4.5-dev.list /var/lib/dpkg/info/libstdc++6.list

My next guess is that you're missing a libstdc++ -dev package.  But if that was the case, you ought to have had much larger problems building due to a lack of c++ header files.

In case it's not clear, dmd does 'just build' for me running unbuntu maverick on an x86-64 bit box.  No hacks to any parts of the dmd makefile or souce code required.  Just a working c++ compiler.

On 1/2/2011 1:28 PM, David Simcha wrote:
> Nope.
> 
> 1.  That package was already installed.
> 
> 2.  I also installed it for a few other versions of GCC just to see if that helped.
> 
> 3.  Using MODEL=-m64 should make multilib irrelevant.  The build fails regardless of which model I build with.
> 
> On 1/2/2011 4:15 PM, Brad Roberts wrote:
>> I suspect you're missing the 32bit multilib bits
>>
>> apt-get install g++-multilib
>>
>> That will likely pull in all the packages you need.
>>
>> On 1/2/2011 1:06 PM, David Simcha wrote:
>>> Error message I receive doing a make -flinux.mak on a Ubuntu 10.10 64-bit installation:
>>>
>>> /usr/bin/ld: cannot find -lstdc++
>>>
>>> This happens whether I build DMD as a 32- or 64-bit binary.  I know I managed to fix this somehow previously, probably by changing the makefile to point to a specific libstdc++.  However, I'm sure I have libstdc++ installed via Ubuntu's package manager (the default, not sure of the details), and the build process really needs to "just work" on standard installs of popular distros.
>>>
>>> --David Simcha
>>>

Ok, I figured it out.  I had gcc pointing to a different installation than g++ because I've been messing around trying to compile gdc. Ideally, all instances of "gcc" in linux.mak should be replaced with "g++" for consistency.

On 1/2/2011 4:59 PM, Brad Roberts wrote:
> Ok, if libstdc++ isn't being found, you're missing a key element of a working gcc c++ compiler somehow.
>
> > From my 64bit dev box:
> $ ls -1 /var/lib/dpkg/info/*++*.list /var/lib/dpkg/info/g++-4.4.list /var/lib/dpkg/info/g++-4.4-multilib.list /var/lib/dpkg/info/g++-4.5.list /var/lib/dpkg/info/g++-4.5-multilib.list /var/lib/dpkg/info/g++.list /var/lib/dpkg/info/g++-multilib.list /var/lib/dpkg/info/lib32stdc++6.list /var/lib/dpkg/info/libstdc++6-4.4-dev.list /var/lib/dpkg/info/libstdc++6-4.5-dev.list /var/lib/dpkg/info/libstdc++6.list
>
> My next guess is that you're missing a libstdc++ -dev package.  But if that was the case, you ought to have had much larger problems building due to a lack of c++ header files.
>
> In case it's not clear, dmd does 'just build' for me running unbuntu maverick on an x86-64 bit box.  No hacks to any parts of the dmd makefile or souce code required.  Just a working c++ compiler.
>
> On 1/2/2011 1:28 PM, David Simcha wrote:
>> Nope.
>>
>> 1.  That package was already installed.
>>
>> 2.  I also installed it for a few other versions of GCC just to see if that helped.
>>
>> 3.  Using MODEL=-m64 should make multilib irrelevant.  The build fails regardless of which model I build with.
>>
>> On 1/2/2011 4:15 PM, Brad Roberts wrote:
>>> I suspect you're missing the 32bit multilib bits
>>>
>>> apt-get install g++-multilib
>>>
>>> That will likely pull in all the packages you need.
>>>
>>> On 1/2/2011 1:06 PM, David Simcha wrote:
>>>> Error message I receive doing a make -flinux.mak on a Ubuntu 10.10 64-bit installation:
>>>>
>>>> /usr/bin/ld: cannot find -lstdc++
>>>>
>>>> This happens whether I build DMD as a 32- or 64-bit binary.  I know I managed to fix this somehow previously, probably by changing the makefile to point to a specific libstdc++.  However, I'm sure I have libstdc++ installed via Ubuntu's package manager (the default, not sure of the details), and the build process really needs to "just work" on standard installs of popular distros.
>>>>
>>>> --David Simcha
>>>>
> _______________________________________________
> dmd-internals mailing list
> dmd-internals at puremagic.com
> http://lists.puremagic.com/mailman/listinfo/dmd-internals
>

David Simcha wrote:
>  Ideally, all instances of "gcc" in linux.mak should be replaced with
> "g++" for consistency.
>


will do.