• Jonathan Crapuchettes <jcrapuchettes gmail.com> Apr 17 2008
• Jason House <jason.james.house gmail.com> Apr 17 2008
• Tower Ty <towerty msn.com.au> Apr 17 2008
• Markus Dittrich <markusle gmail.com> Apr 17 2008
• Jonathan Crapuchettes <jcrapuchettes gmail.com> Apr 18 2008
• "Neil Vice" <psgdg swiftdsl.com.au> Apr 18 2008
• Jonathan Crapuchettes <jcrapuchettes gmail.com> Apr 18 2008

I am getting a linker error when I try to compile my code as follows:

jonathan blackbeard:~/workspace/ccb/matrix$ gdmd test.d Matrix.d Vector.d
Util.d 
../MySQLConnection.d -unittest -I../.. -L/usr/lib/atlas/libptcblas.a 
-L/usr/lib/atlas/liblapack.a -L/usr/lib/atlas/libatlas.a 
-L/usr/lib/atlas/libcblas.a -L/usr/lib/atlas/libblas.a 
-L/usr/lib/libmysqlclient.so -vdmd
/usr/bin/gdc -funittest -I ../.. -c test.d -o test.o
/usr/bin/gdc -funittest -I ../.. -c Matrix.d -o Matrix.o
/usr/bin/gdc -funittest -I ../.. -c Vector.d -o Vector.o
/usr/bin/gdc -funittest -I ../.. -c Util.d -o Util.o
/usr/bin/gdc -funittest -I ../.. -c ../MySQLConnection.d -o MySQLConnection.o
/usr/bin/gdc -funittest -I ../.. test.o Matrix.o Vector.o Util.o 
MySQLConnection.o -Wl,/usr/lib/atlas/libptcblas.a
-Wl,/usr/lib/atlas/liblapack.a 
-Wl,/usr/lib/atlas/libatlas.a -Wl,/usr/lib/atlas/libcblas.a 
-Wl,/usr/lib/atlas/libblas.a -Wl,/usr/lib/libmysqlclient.so -o test
Util.o: In function `_D3ccb6matrix4Util11__unittest0FZv':
Util.d:(.text+0x2ec4): undefined reference to 
`_D3ccb15MySQLConnection15mysqlConnection7__ClassZ'
Util.d:(.text+0x2f22): undefined reference to 
`_D3ccb15MySQLConnection15mysqlConnection5_ctorMFAaAaAaAaZC3ccb15MySQLConnection15mysqlConnection'
collect2: ld returned 1 exit status

I am trying to use gdc for its 64-bit compilation, but this is a problem. I 
checked the compiled code inside MySQLConnection.o with objdump and found that 
_D3ccb15MySQLConnection15MysqlConnection7__ClassZ exists. The only different 
between this label and the one that is causing the error is the m in the last 
term. The name of the class is MysqlConnection.

I am using gdc (GCC) 4.1.3 20070831 (prerelease gdc 0.25, using dmd 1.021) 
(Ubuntu 0.25-4.1.2-16ubuntu1).

What can I do to get this is compile and link?

Thank you taking to read this,
JC

Jonathan Crapuchettes wrote:

 I am getting a linker error when I try to compile my code as follows:
 
 jonathan blackbeard:~/workspace/ccb/matrix$ gdmd test.d Matrix.d Vector.d
 Util.d ../MySQLConnection.d -unittest -I../..
 -L/usr/lib/atlas/libptcblas.a -L/usr/lib/atlas/liblapack.a
 -L/usr/lib/atlas/libatlas.a -L/usr/lib/atlas/libcblas.a
 -L/usr/lib/atlas/libblas.a -L/usr/lib/libmysqlclient.so -vdmd
 /usr/bin/gdc -funittest -I ../.. -c test.d -o test.o
 /usr/bin/gdc -funittest -I ../.. -c Matrix.d -o Matrix.o
 /usr/bin/gdc -funittest -I ../.. -c Vector.d -o Vector.o
 /usr/bin/gdc -funittest -I ../.. -c Util.d -o Util.o
 /usr/bin/gdc -funittest -I ../.. -c ../MySQLConnection.d -o
 MySQLConnection.o /usr/bin/gdc -funittest -I ../.. test.o Matrix.o
 Vector.o Util.o MySQLConnection.o -Wl,/usr/lib/atlas/libptcblas.a
 -Wl,/usr/lib/atlas/liblapack.a -Wl,/usr/lib/atlas/libatlas.a
 -Wl,/usr/lib/atlas/libcblas.a -Wl,/usr/lib/atlas/libblas.a
 -Wl,/usr/lib/libmysqlclient.so -o test Util.o: In function
 `_D3ccb6matrix4Util11__unittest0FZv': Util.d:(.text+0x2ec4): undefined
 reference to `_D3ccb15MySQLConnection15mysqlConnection7__ClassZ'
 Util.d:(.text+0x2f22): undefined reference to


 collect2: ld returned 1 exit status
 
 I am trying to use gdc for its 64-bit compilation, but this is a problem.
 I checked the compiled code inside MySQLConnection.o with objdump and
 found that _D3ccb15MySQLConnection15MysqlConnection7__ClassZ exists. The
 only different between this label and the one that is causing the error is
 the m in the last term. The name of the class is MysqlConnection.
 
 I am using gdc (GCC) 4.1.3 20070831 (prerelease gdc 0.25, using dmd 1.021)
 (Ubuntu 0.25-4.1.2-16ubuntu1).
 
 What can I do to get this is compile and link?
 
 Thank you taking to read this,
 JC


If you pick up a d demangler and run it on the output, it'll make it easier
for others to interpret.  It may even have the unexpected side effect of
making the error obvious.

Jason House Wrote:

 Jonathan Crapuchettes wrote:
 
 I am getting a linker error when I try to compile my code as follows:
 
 jonathan blackbeard:~/workspace/ccb/matrix$ gdmd test.d Matrix.d Vector.d
 Util.d ../MySQLConnection.d -unittest -I../..
 -L/usr/lib/atlas/libptcblas.a -L/usr/lib/atlas/liblapack.a
 -L/usr/lib/atlas/libatlas.a -L/usr/lib/atlas/libcblas.a
 -L/usr/lib/atlas/libblas.a -L/usr/lib/libmysqlclient.so -vdmd
 /usr/bin/gdc -funittest -I ../.. -c test.d -o test.o
 /usr/bin/gdc -funittest -I ../.. -c Matrix.d -o Matrix.o
 /usr/bin/gdc -funittest -I ../.. -c Vector.d -o Vector.o
 /usr/bin/gdc -funittest -I ../.. -c Util.d -o Util.o
 /usr/bin/gdc -funittest -I ../.. -c ../MySQLConnection.d -o
 MySQLConnection.o /usr/bin/gdc -funittest -I ../.. test.o Matrix.o
 Vector.o Util.o MySQLConnection.o -Wl,/usr/lib/atlas/libptcblas.a
 -Wl,/usr/lib/atlas/liblapack.a -Wl,/usr/lib/atlas/libatlas.a
 -Wl,/usr/lib/atlas/libcblas.a -Wl,/usr/lib/atlas/libblas.a
 -Wl,/usr/lib/libmysqlclient.so -o test Util.o: In function
 `_D3ccb6matrix4Util11__unittest0FZv': Util.d:(.text+0x2ec4): undefined
 reference to `_D3ccb15MySQLConnection15mysqlConnection7__ClassZ'
 Util.d:(.text+0x2f22): undefined reference to


 collect2: ld returned 1 exit status
 
 I am trying to use gdc for its 64-bit compilation, but this is a problem.
 I checked the compiled code inside MySQLConnection.o with objdump and
 found that _D3ccb15MySQLConnection15MysqlConnection7__ClassZ exists. The
 only different between this label and the one that is causing the error is
 the m in the last term. The name of the class is MysqlConnection.
 
 I am using gdc (GCC) 4.1.3 20070831 (prerelease gdc 0.25, using dmd 1.021)
 (Ubuntu 0.25-4.1.2-16ubuntu1).
 
 What can I do to get this is compile and link?
 
 Thank you taking to read this,
 JC


 If you pick up a d demangler and run it on the output, it'll make it easier
 for others to interpret.  It may even have the unexpected side effect of
 making the error obvious.


If hes using tango then there isn't one I don't think
Phobos has one for use in Linux
This question is in the ".D" forum also and I passed on it in case I lower your
chances of an answer, however I'd suggest that somewhere in 
reference to `_D3ccb15MySQLConnection15mysqlConnection7__ClassZ'  and
`_D3ccb15MySQLConnection15mysqlConnection5_ctorMFAaAaAaAaZC3ccb15MySQLConnection15mysqlConnection'

is a clue . I would be looking  for "MySQLConnection.mysqlConnection"  typed
somewhere instead of "MySQLConnection.MysqlConnection"  You are right about the
m I think

Anyway some much smarter people on here will hopefuly read the output and be
able to interpret it clearly for you 

Jonathan Crapuchettes Wrote:

 I am getting a linker error when I try to compile my code as follows:
 /usr/bin/gdc -funittest -I ../.. test.o Matrix.o Vector.o Util.o 
 MySQLConnection.o -Wl,/usr/lib/atlas/libptcblas.a
-Wl,/usr/lib/atlas/liblapack.a 
 -Wl,/usr/lib/atlas/libatlas.a -Wl,/usr/lib/atlas/libcblas.a 
 -Wl,/usr/lib/atlas/libblas.a -Wl,/usr/lib/libmysqlclient.so -o test
 Util.o: In function `_D3ccb6matrix4Util11__unittest0FZv':
 Util.d:(.text+0x2ec4): undefined reference to 
 `_D3ccb15MySQLConnection15mysqlConnection7__ClassZ'
 Util.d:(.text+0x2f22): undefined reference to 


Have you tried putting MySQLConnection.o before Util.o when linking?

cheers,
Markus

Yes, but sadly I got the same result.
JC

Markus Dittrich wrote:
 Jonathan Crapuchettes Wrote:
 
 I am getting a linker error when I try to compile my code as follows:
 /usr/bin/gdc -funittest -I ../.. test.o Matrix.o Vector.o Util.o 
 MySQLConnection.o -Wl,/usr/lib/atlas/libptcblas.a
-Wl,/usr/lib/atlas/liblapack.a 
 -Wl,/usr/lib/atlas/libatlas.a -Wl,/usr/lib/atlas/libcblas.a 
 -Wl,/usr/lib/atlas/libblas.a -Wl,/usr/lib/libmysqlclient.so -o test
 Util.o: In function `_D3ccb6matrix4Util11__unittest0FZv':
 Util.d:(.text+0x2ec4): undefined reference to 
 `_D3ccb15MySQLConnection15mysqlConnection7__ClassZ'
 Util.d:(.text+0x2f22): undefined reference to 


 Have you tried putting MySQLConnection.o before Util.o when linking?
 
 cheers,
 Markus
 

"Jonathan Crapuchettes" <jcrapuchettes gmail.com> wrote in message 
news:fu8iu2$98s$1 digitalmars.com...
I am getting a linker error when I try to compile my code as follows:

 jonathan blackbeard:~/workspace/ccb/matrix$ gdmd test.d Matrix.d Vector.d 
 Util.d 
 ../MySQLConnection.d -unittest -I../.. -L/usr/lib/atlas/libptcblas.a
-L/usr/lib/atlas/liblapack.a 
  -L/usr/lib/atlas/libatlas.a -L/usr/lib/atlas/libcblas.a
-L/usr/lib/atlas/libblas.a 
  -L/usr/lib/libmysqlclient.so -vdmd
 /usr/bin/gdc -funittest -I ../.. -c test.d -o test.o
 /usr/bin/gdc -funittest -I ../.. -c Matrix.d -o Matrix.o
 /usr/bin/gdc -funittest -I ../.. -c Vector.d -o Vector.o
 /usr/bin/gdc -funittest -I ../.. -c Util.d -o Util.o
 /usr/bin/gdc -funittest -I ../.. -c ../MySQLConnection.d -o 
 MySQLConnection.o
 /usr/bin/gdc -funittest -I ../.. test.o Matrix.o Vector.o Util.o 
 MySQLConnection.o -Wl,/usr/lib/atlas/libptcblas.a
-Wl,/usr/lib/atlas/liblapack.a 
  -Wl,/usr/lib/atlas/libatlas.a -Wl,/usr/lib/atlas/libcblas.a
-Wl,/usr/lib/atlas/libblas.a 
  -Wl,/usr/lib/libmysqlclient.so -o test
 Util.o: In function `_D3ccb6matrix4Util11__unittest0FZv':
 Util.d:(.text+0x2ec4): undefined reference to 
 `_D3ccb15MySQLConnection15mysqlConnection7__ClassZ'
 Util.d:(.text+0x2f22): undefined reference to 
 `_D3ccb15MySQLConnection15mysqlConnection5_ctorMFAaAaAaAaZC3ccb15MySQLConnection15mysqlConnection'
 collect2: ld returned 1 exit status

 I am trying to use gdc for its 64-bit compilation, but this is a problem. 
 I checked the compiled code inside MySQLConnection.o with objdump and 
 found that _D3ccb15MySQLConnection15MysqlConnection7__ClassZ exists. The 
 only different between this label and the one that is causing the error is 
 the m in the last term. The name of the class is MysqlConnection.

 I am using gdc (GCC) 4.1.3 20070831 (prerelease gdc 0.25, using dmd 1.021) 
 (Ubuntu 0.25-4.1.2-16ubuntu1).

 What can I do to get this is compile and link?

 Thank you taking to read this,
 JC


I don't see why a single compiler would generate two different mangled names 
for the same identifier. As such, I wonder where the two object files 
involved were obtained from? Could they have been built with different 
compiler versions somehow? Did you obtain one of them as a binary? If so, 
perhaps the case in the associated extern declaration is incorrect...

I also know that DMD acts differently if you compile a series of files in 
the one command or compile each seperately and the link. Don't think this 
would apply to GDC but another thought...

Good luck

Thank you for your thoughts, but as you can see from the gdmd output, all
object 
files were created at the same time by the same compiler. I am starting to 
wonder if it isn't a bug in gdc.
Thanks again,
JC

Neil Vice wrote:
 "Jonathan Crapuchettes" <jcrapuchettes gmail.com> wrote in message 
 news:fu8iu2$98s$1 digitalmars.com...
 I am getting a linker error when I try to compile my code as follows:

 jonathan blackbeard:~/workspace/ccb/matrix$ gdmd test.d Matrix.d Vector.d 
 Util.d 
 ../MySQLConnection.d -unittest -I../.. -L/usr/lib/atlas/libptcblas.a
-L/usr/lib/atlas/liblapack.a 
  -L/usr/lib/atlas/libatlas.a -L/usr/lib/atlas/libcblas.a
-L/usr/lib/atlas/libblas.a 
  -L/usr/lib/libmysqlclient.so -vdmd
 /usr/bin/gdc -funittest -I ../.. -c test.d -o test.o
 /usr/bin/gdc -funittest -I ../.. -c Matrix.d -o Matrix.o
 /usr/bin/gdc -funittest -I ../.. -c Vector.d -o Vector.o
 /usr/bin/gdc -funittest -I ../.. -c Util.d -o Util.o
 /usr/bin/gdc -funittest -I ../.. -c ../MySQLConnection.d -o 
 MySQLConnection.o
 /usr/bin/gdc -funittest -I ../.. test.o Matrix.o Vector.o Util.o 
 MySQLConnection.o -Wl,/usr/lib/atlas/libptcblas.a
-Wl,/usr/lib/atlas/liblapack.a 
  -Wl,/usr/lib/atlas/libatlas.a -Wl,/usr/lib/atlas/libcblas.a
-Wl,/usr/lib/atlas/libblas.a 
  -Wl,/usr/lib/libmysqlclient.so -o test
 Util.o: In function `_D3ccb6matrix4Util11__unittest0FZv':
 Util.d:(.text+0x2ec4): undefined reference to 
 `_D3ccb15MySQLConnection15mysqlConnection7__ClassZ'
 Util.d:(.text+0x2f22): undefined reference to 
 `_D3ccb15MySQLConnection15mysqlConnection5_ctorMFAaAaAaAaZC3ccb15MySQLConnection15mysqlConnection'
 collect2: ld returned 1 exit status

 I am trying to use gdc for its 64-bit compilation, but this is a problem. 
 I checked the compiled code inside MySQLConnection.o with objdump and 
 found that _D3ccb15MySQLConnection15MysqlConnection7__ClassZ exists. The 
 only different between this label and the one that is causing the error is 
 the m in the last term. The name of the class is MysqlConnection.

 I am using gdc (GCC) 4.1.3 20070831 (prerelease gdc 0.25, using dmd 1.021) 
 (Ubuntu 0.25-4.1.2-16ubuntu1).

 What can I do to get this is compile and link?

 Thank you taking to read this,
 JC


 I don't see why a single compiler would generate two different mangled names 
 for the same identifier. As such, I wonder where the two object files 
 involved were obtained from? Could they have been built with different 
 compiler versions somehow? Did you obtain one of them as a binary? If so, 
 perhaps the case in the associated extern declaration is incorrect...
 
 I also know that DMD acts differently if you compile a series of files in 
 the one command or compile each seperately and the link. Don't think this 
 would apply to GDC but another thought...
 
 Good luck