# OpenROAD Build From Sources

Subcategory: Compilation error

## Conversation

### sebinho
Hello Guys,

I am using ArchLinux and I have been using OpenROAD from an install package from the AUR. 
This install does not seem to work anymore (it was working on my setup a couple of weeks ago).

So I am trying to build from sources but I get the same errors as I get with the AUR package:
```
[ 74%] Building CXX object src/gui/CMakeFiles/gui.dir/src/scriptWidget.cpp.o
In file included from /home/zed/repos/OpenROAD/src/gui/src/tclCmdInputWidget.h:50,
                 from /home/zed/repos/OpenROAD/src/gui/src/scriptWidget.cpp:49:
/home/zed/repos/OpenROAD/build/src/gui/tclSwig.h: In function ‘int SWIG_Tcl_GetArgs(Tcl_Interp*, int, Tcl_Obj* const*, const char*, ...)’:
/home/zed/repos/OpenROAD/build/src/gui/tclSwig.h:1623:11: error: ‘Tcl_Size’ was not declared in this scope; did you mean ‘Tcl_Time’?
 1623 |           Tcl_Size *vlptr = (Tcl_Size *) va_arg(ap, void *);
      |           ^~~~~~~~
      |           Tcl_Time
/home/zed/repos/OpenROAD/build/src/gui/tclSwig.h:1623:21: error: ‘vlptr’ was not declared in this scope; did you mean ‘vptr’?
 1623 |           Tcl_Size *vlptr = (Tcl_Size *) va_arg(ap, void *);
      |                     ^~~~~
      |                     vptr
/home/zed/repos/OpenROAD/build/src/gui/tclSwig.h:1623:40: error: expected primary-expression before ‘)’ token
 1623 |           Tcl_Size *vlptr = (Tcl_Size *) va_arg(ap, void *);
      |                                        ^
make[2]: *** [src/gui/CMakeFiles/gui.dir/build.make:226: src/gui/CMakeFiles/gui.dir/src/scriptWidget.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
[ 74%] Building CXX object src/rcx/src/CMakeFiles/rcxUnitTest.dir/__/test/ext2dBoxTest.cpp.o
In file included from /home/zed/repos/OpenROAD/build/src/gui/gui_autogen/UVLADIE3JM/../../../../../src/gui/src/tclCmdInputWidget.h:50,
                 from /home/zed/repos/OpenROAD/build/src/gui/gui_autogen/UVLADIE3JM/moc_tclCmdInputWidget.cpp:10,
                 from /home/zed/repos/OpenROAD/build/src/gui/gui_autogen/mocs_compilation.cpp:23:
/home/zed/repos/OpenROAD/build/src/gui/tclSwig.h: In function ‘int SWIG_Tcl_GetArgs(Tcl_Interp*, int, Tcl_Obj* const*, const char*, ...)’:
/home/zed/repos/OpenROAD/build/src/gui/tclSwig.h:1623:11: error: ‘Tcl_Size’ was not declared in this scope; did you mean ‘Tcl_Time’?
 1623 |           Tcl_Size *vlptr = (Tcl_Size *) va_arg(ap, void *);
      |           ^~~~~~~~
      |           Tcl_Time
/home/zed/repos/OpenROAD/build/src/gui/tclSwig.h:1623:21: error: ‘vlptr’ was not declared in this scope; did you mean ‘vptr’?
 1623 |           Tcl_Size *vlptr = (Tcl_Size *) va_arg(ap, void *);
      |                     ^~~~~
      |                     vptr
/home/zed/repos/OpenROAD/build/src/gui/tclSwig.h:1623:40: error: expected primary-expression before ‘)’ token
 1623 |           Tcl_Size *vlptr = (Tcl_Size *) va_arg(ap, void *);
      |                                        ^
[ 74%] Linking CXX executable dpl_test
```

Seems to be something related to Swig with TCL. Does anybody know what the problem is?

Thanks for your help



### maliberty
What version of TCL and swig do you have installed?

### maliberty
Perhaps something is different in 4.2.1 as with 4.1.0 I don't see any used of Tcl_Size in tclSwig.h.  Is it possible for you to downgrade?

### stefanottili
Does anybody know how to downgrade swig on MacOS M1 homebrew ?
The current SWIG Version 4.2.1 causes the same error here.
Can be worked around by commenting out the two offending lines, they seem to be in an error path ...