Get and set terminal size
I want use tgetnum for get terminal size http://www.mkssoftware.com/docs/man3/curs_termcap.3.asp extern(C): int tgetnum(const(char) *capname); calling a method from main writeln(tgetnum(toStringz("li"))); I receive an error message Undefined symbols for architecture x86_64: "_tgetnum", referenced from: _main in RSConsole.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) Does anyone know what the problem is? Maybe there are other methods to get and set sizes of the Mac OS X console?
Re: Get and set terminal size
Try adding -lncurses or -lcurses to the command line. tgetnum is found in the curses library which isn't linked in automatically by default.
Re: Get and set terminal size
On Saturday, 19 April 2014 at 09:59:39 UTC, Adam D. Ruppe wrote: Try adding -lncurses or -lcurses to the command line. tgetnum is found in the curses library which isn't linked in automatically by default. Error: unrecognized switch '-lcurses' Error: unrecognized switch '-lncurses' :((
Re: Get and set terminal size
Blargh, I don't know teh ldc switch for it :( Try adding pragma(lib, "curses"); (or ncurses) to your file with main in it, i think ldc supports that.
Re: Get and set terminal size
On Saturday, 19 April 2014 at 10:39:43 UTC, Adam D. Ruppe wrote: Blargh, I don't know teh ldc switch for it :( Try adding pragma(lib, "curses"); (or ncurses) to your file with main in it, i think ldc supports that. pragma(lib, "curses"); extern(C): int tgetnum(const(char) *capname); hmm segfault error :( Segmentation fault: 11
Re: Get and set terminal size
What are compiler and platform do you use? Probably you are trying to link with 64-bit library while being on 32-bit OS (or vice versa) It works fine on my 32-bit Debian with ldc2 and dmd.
Re: Get and set terminal size
I use ldc2 main.d -L-lcurses or dmd main.d -L-lcurses and following source code: import std.stdio; extern(C) int tgetnum(const(char) *id); int main() { writeln(tgetnum("li")); return 0; } Note that you don't need to apply toStringz to string literals since they implicitly cast to const char*.
Re: Get and set terminal size
On 4/19/2014 9:06 PM, FreeSlave wrote: Note that you don't need to apply toStringz to string literals since they implicitly cast to const char*. And, more importantly, are nul terminated.
Re: Get and set terminal size
On Saturday, 19 April 2014 at 12:06:58 UTC, FreeSlave wrote: I use ldc2 main.d -L-lcurses or dmd main.d -L-lcurses and following source code: import std.stdio; extern(C) int tgetnum(const(char) *id); int main() { writeln(tgetnum("li")); return 0; } Note that you don't need to apply toStringz to string literals since they implicitly cast to const char*. It's work) Thanks.