I am on Snow Leopard, installed 1.9.2 using rvm.
Here is the runtime error I get from ncurses-0.9.1:
dyld: lazy symbol binding failed: Symbol not found: _STR2CSTR
Referenced from:
/Users/rahul/.rvm/rubies/ruby-1.9.2-head/lib/ruby/site_ruby/1.9.1/x86_64-darwin10/ncurses.bundle
Expected in: flat namespace dyld:
Symbol not found: _STR2CSTR
Referenced from:
/Users/rahul/.rvm/rubies/ruby-1.9.2-head/lib/ruby/site_ruby/1.9.1/x86_64-darwin10/ncurses.bundle
Expected in: flat namespace
Trace/BPT trap
Someone told me that STR2CSTR has been removed. Could someone tell me
what I should replace STR2CSTR with in the ncurses code, or what to do.
I am not familiar with the Ruby-C interface, and would appreciate some
pointers.
thanks,
rahul
p.s. I am using an older version of ncurses, since i can’t get 1.2.4 to
compile or run on Snow Leopard.
---- On Sat, 21 Aug 2010 08:17:32 +0200 R… Kumar 1.9.1 OSX wrote ----
Someone told me that STR2CSTR has been removed. Could someone tell me
what I should replace STR2CSTR with in the ncurses code, or what to do.
I am not familiar with the Ruby-C interface, and would appreciate some
pointers.
Actually STR2CSTR was marked as obsolete in 1.8 and removed in 1.9.1.
ruby.h:
/* obsolete API - use StringValue() /
char rb_str2cstr _((VALUE,long));
/ obsolete API - use StringValuePtr() */
#define STR2CSTR(x) rb_str2cstr((VALUE)(x),0)
Basically just replace STR2CSTR by StringValuePtr or define this macro.
Wbr
Christoph
Christoph K. wrote:
---- On Sat, 21 Aug 2010 08:17:32 +0200 R… Kumar 1.9.1 OSX wrote ----
Someone told me that STR2CSTR has been removed. Could someone tell me
what I should replace STR2CSTR with in the ncurses code, or what to do.
I am not familiar with the Ruby-C interface, and would appreciate some
pointers.
Actually STR2CSTR was marked as obsolete in 1.8 and removed in 1.9.1.
ruby.h:
/* obsolete API - use StringValue() /
char rb_str2cstr _((VALUE,long));
/ obsolete API - use StringValuePtr() */
#define STR2CSTR(x) rb_str2cstr((VALUE)(x),0)
Basically just replace STR2CSTR by StringValuePtr or define this macro.
Wbr
Christoph
I’ve tried various combinations. I either get runtime errors relating to
rb_str2ctr or just make errors.
- $ perl -p -i.b -e ‘s/STR2CSTR/StringValuePtr/g’ *.c
$ make
form_wrap.c: In function ‘rbncurs_c_set_field_type’:
form_wrap.c:626: error: lvalue required as unary ‘&’ operand
form_wrap.c: In function ‘rbncurs_c_set_field_fore’:
form_wrap.c:698: warning: implicit conversion shortens 64-bit value into
a 32-bit value
form_wrap.c: In function ‘rbncurs_c_set_field_back’:
form_wrap.c:712: warning: implicit conversion shortens 64-bit value into
a 32-bit value
form_wrap.c: In function ‘make_arg’:
form_wrap.c:1134: warning: format not a string literal and no format
arguments
make: *** [form_wrap.o] Error 1
Christoph K. wrote:
---- On Sat, 21 Aug 2010 08:17:32 +0200 R… Kumar 1.9.1 OSX wrote ----
Someone told me that STR2CSTR has been removed. Could someone tell me
what I should replace STR2CSTR with in the ncurses code, or what to do.
I am not familiar with the Ruby-C interface, and would appreciate some
pointers.
Actually STR2CSTR was marked as obsolete in 1.8 and removed in 1.9.1.
ruby.h:
/* obsolete API - use StringValue() /
char rb_str2cstr _((VALUE,long));
/ obsolete API - use StringValuePtr() */
#define STR2CSTR(x) rb_str2cstr((VALUE)(x),0)
Basically just replace STR2CSTR by StringValuePtr or define this macro.
Wbr
Christoph
On a fresh copy I placed the above lines, in the ncurse_wrap.h file.
“make” worked, I created a gem and installed the gem. (I placed the
lines above #include <ruby.h> else i get compilation errors.)
Upon execution of any sample I get: dyld: lazy symbol binding failed:
Symbol not found: _rb_str2cstr
Perhaps, I am placing these lines in the wrong place. I tried placing in
the .c file but i get the same run time error.
On Sat, Aug 21, 2010 at 7:10 PM, R… Kumar 1.9.1 OSX
[email protected] wrote:
Christoph K. wrote:
---- On Sat, 21 Aug 2010 08:17:32 +0200 R… Kumar 1.9.1 OSX Â wrote ----
Someone told me that STR2CSTR has been removed. Could someone tell me
what I should replace STR2CSTR with in the ncurses code, or what to do.
I am not familiar with the Ruby-C interface, and would appreciate some
pointers.
Michael F. wrote:
On Sat, Aug 21, 2010 at 7:10 PM, R… Kumar 1.9.1 OSX
[email protected] wrote:
Christoph K. wrote:
---- On Sat, 21 Aug 2010 08:17:32 +0200 R… Kumar 1.9.1 OSX Â wrote ----
Someone told me that STR2CSTR has been removed. Could someone tell me
what I should replace STR2CSTR with in the ncurses code, or what to do.
I am not familiar with the Ruby-C interface, and would appreciate some
pointers.
GitHub - seanohalpin/ffi-ncurses: Interface to ncurses using Ruby FFI (Foreign Function Interface)
Is anything other than ncurses port required to be installed ?
I get:
$ ruby example.rb
.rvm/gems/ruby-1.9.2-head/gems/ffi-0.6.3/lib/ffi/library.rb:61:in `block
in ffi_lib’: Could not open library ‘libncurses.so.5’:
dlopen(libncurses.so.5, 5): image not found. Could not open library
‘libncurses.so.5.dylib’: dlopen(libncurses.so.5.dylib, 5): image not
found (LoadError)
$ mdfind -name ‘libncurses.’
/Developer/SDKs/MacOSX10.6.sdk/usr/lib/libncurses.5.4.dylib
/usr/lib/libncurses.5.4.dylib
/usr/lib/libncurses.5.dylib
/opt/local/lib/libncurses.5.dylib
/opt/local/lib/libncurses.a
$ port installed | grep ncurse
ncurses @5.7_0+darwin_10 (active)
ncursesw @5.7_0+darwin_10 (active)
On Sat, Aug 21, 2010 at 11:37 PM, R… Kumar 1.9.1 OSX
[email protected] wrote:
GitHub - seanohalpin/ffi-ncurses: Interface to ncurses using Ruby FFI (Foreign Function Interface)
Is anything other than ncurses port required to be installed ?
Seems like it’s a bit outdated, I fixed that for you:
Not sure if that works on OSX, but I’m hopeful 
R… Kumar 1.9.1 OSX wrote:
I’ve tried various combinations. I either get runtime errors relating to
rb_str2ctr or just make errors.
- $ perl -p -i.b -e ‘s/STR2CSTR/StringValuePtr/g’ *.c
$ make
form_wrap.c: In function ‘rbncurs_c_set_field_type’:
form_wrap.c:626: error: lvalue required as unary ‘&’ operand
form_wrap.c: In function ‘rbncurs_c_set_field_fore’:
form_wrap.c:698: warning: implicit conversion shortens 64-bit value into
a 32-bit value
form_wrap.c: In function ‘rbncurs_c_set_field_back’:
form_wrap.c:712: warning: implicit conversion shortens 64-bit value into
a 32-bit value
form_wrap.c: In function ‘make_arg’:
form_wrap.c:1134: warning: format not a string literal and no format
arguments
make: *** [form_wrap.o] Error 1
Unfortunately replacing STR2CSTR with StringValuePtr is not enough as
outlined in
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/105048. You
have to make two additional changes:
$ diff form_wrap.c form_wrap.c.b
626,627c626
< VALUE tmp = rb_ary_entry(arg3, (long)i);
< list[i] = StringValuePtr(tmp);
list[i] = STR2CSTR(rb_ary_entry(arg3, (long)i));
…
and
$ diff ncurses_wrap.c ncurses_wrap.c.b
…
2244,2245d2243
< VALUE tmp = rb_funcall3(rb_mKernel, rb_intern(“sprintf”), argc-1,
< argv + 1);
2247c2245,2246
< (VALUE)StringValuePtr(tmp));
STR2CSTR(rb_funcall3(rb_mKernel, rb_intern("sprintf"), argc-1,
argv + 1)));
…
Then run
make
make install
within the installed ncurses gem. After these changes I was able to run
the 2 testcases test1.rb and test2.rb of rbcurse-1.1.3.
ruby test1.rb
Ralf Papenkordt wrote:
$ diff ncurses_wrap.c ncurses_wrap.c.b
…
2244,2245d2243
< VALUE tmp = rb_funcall3(rb_mKernel, rb_intern(“sprintf”), argc-1,
< argv + 1);
2247c2245,2246
< (VALUE)StringValuePtr(tmp));
STR2CSTR(rb_funcall3(rb_mKernel, rb_intern("sprintf"), argc-1,
argv + 1)));
…
Thanks a lot, Ralf. Working fine 
I wish i could take over maintenance of this gem, but I know very basic
C only.