# Help installing rubysdl gem

**URL:** <https://www.ruby-forum.com/t/help-installing-rubysdl-gem/185454>\
**Category:** Ruby\
**Created:** [March 20, 2010, 11:58am UTC](https://www.ruby-forum.com/t/help-installing-rubysdl-gem/185454 "2010-03-20T11:58:23Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![spinhoo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/958977/32.png) [@spinhoo](https://www.ruby-forum.com/u/spinhoo)\
**Post date:** [March 20, 2010, 11:58am UTC](https://www.ruby-forum.com/t/help-installing-rubysdl-gem/185454/1 "2010-03-20T11:58:23Z")

</div>

Hi

```
I am trying to install rubysdl gem on 1.9.1p243. I have tried to

```

install using gem install and by compiling the source code. But the  
source code doesn’t compile. It throws the following error. I see the  
same output while trying to install using “gem install”. Could some one  
help me out here. I have no clue whats wrong.

Thanks in advance  
Venkat

ruby-sdl/rubysdl-2.0.1b$ sudo make  
gcc -I. -I/usr/local/include/ruby-1.9.1/i686-linux  
-I/usr/local/include/ruby-1.9.1/ruby/backward  
-I/usr/local/include/ruby-1.9.1 -I. -I/usr/X11R6/include  
-D\_FILE\_OFFSET\_BITS=64 -fPIC -O2 -g -Wall -Wno-parentheses  
-I/usr/local/include/SDL -D ENABLE\_OPENGL -o rubysdl\_ttf.o -c  
rubysdl\_ttf.c  
gcc -I. -I/usr/local/include/ruby-1.9.1/i686-linux  
-I/usr/local/include/ruby-1.9.1/ruby/backward  
-I/usr/local/include/ruby-1.9.1 -I. -I/usr/X11R6/include  
-D\_FILE\_OFFSET\_BITS=64 -fPIC -O2 -g -Wall -Wno-parentheses  
-I/usr/local/include/SDL -D ENABLE\_OPENGL -o rubysdl\_event\_key.o -c  
rubysdl\_event\_key.c  
rubysdl\_event\_key.c: In function ‘define\_const’:  
rubysdl\_event\_key.c:30: error: ‘SDLK\_FIRST’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:30: error: (Each undeclared identifier is reported  
only once  
rubysdl\_event\_key.c:30: error: for each function it appears in.)  
rubysdl\_event\_key.c:108: error: ‘SDLK\_WORLD\_0’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:109: error: ‘SDLK\_WORLD\_1’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:110: error: ‘SDLK\_WORLD\_2’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:111: error: ‘SDLK\_WORLD\_3’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:112: error: ‘SDLK\_WORLD\_4’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:113: error: ‘SDLK\_WORLD\_5’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:114: error: ‘SDLK\_WORLD\_6’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:115: error: ‘SDLK\_WORLD\_7’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:116: error: ‘SDLK\_WORLD\_8’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:117: error: ‘SDLK\_WORLD\_9’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:118: error: ‘SDLK\_WORLD\_10’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:119: error: ‘SDLK\_WORLD\_11’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:120: error: ‘SDLK\_WORLD\_12’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:121: error: ‘SDLK\_WORLD\_13’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:122: error: ‘SDLK\_WORLD\_14’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:123: error: ‘SDLK\_WORLD\_15’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:124: error: ‘SDLK\_WORLD\_16’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:125: error: ‘SDLK\_WORLD\_17’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:126: error: ‘SDLK\_WORLD\_18’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:127: error: ‘SDLK\_WORLD\_19’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:128: error: ‘SDLK\_WORLD\_20’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:129: error: ‘SDLK\_WORLD\_21’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:130: error: ‘SDLK\_WORLD\_22’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:131: error: ‘SDLK\_WORLD\_23’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:132: error: ‘SDLK\_WORLD\_24’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:133: error: ‘SDLK\_WORLD\_25’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:134: error: ‘SDLK\_WORLD\_26’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:135: error: ‘SDLK\_WORLD\_27’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:136: error: ‘SDLK\_WORLD\_28’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:137: error: ‘SDLK\_WORLD\_29’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:138: error: ‘SDLK\_WORLD\_30’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:139: error: ‘SDLK\_WORLD\_31’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:140: error: ‘SDLK\_WORLD\_32’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:141: error: ‘SDLK\_WORLD\_33’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:142: error: ‘SDLK\_WORLD\_34’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:143: error: ‘SDLK\_WORLD\_35’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:144: error: ‘SDLK\_WORLD\_36’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:145: error: ‘SDLK\_WORLD\_37’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:146: error: ‘SDLK\_WORLD\_38’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:147: error: ‘SDLK\_WORLD\_39’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:148: error: ‘SDLK\_WORLD\_40’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:149: error: ‘SDLK\_WORLD\_41’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:150: error: ‘SDLK\_WORLD\_42’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:151: error: ‘SDLK\_WORLD\_43’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:152: error: ‘SDLK\_WORLD\_44’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:153: error: ‘SDLK\_WORLD\_45’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:154: error: ‘SDLK\_WORLD\_46’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:155: error: ‘SDLK\_WORLD\_47’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:156: error: ‘SDLK\_WORLD\_48’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:157: error: ‘SDLK\_WORLD\_49’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:158: error: ‘SDLK\_WORLD\_50’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:159: error: ‘SDLK\_WORLD\_51’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:160: error: ‘SDLK\_WORLD\_52’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:161: error: ‘SDLK\_WORLD\_53’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:162: error: ‘SDLK\_WORLD\_54’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:163: error: ‘SDLK\_WORLD\_55’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:164: error: ‘SDLK\_WORLD\_56’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:165: error: ‘SDLK\_WORLD\_57’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:166: error: ‘SDLK\_WORLD\_58’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:167: error: ‘SDLK\_WORLD\_59’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:168: error: ‘SDLK\_WORLD\_60’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:169: error: ‘SDLK\_WORLD\_61’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:170: error: ‘SDLK\_WORLD\_62’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:171: error: ‘SDLK\_WORLD\_63’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:172: error: ‘SDLK\_WORLD\_64’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:173: error: ‘SDLK\_WORLD\_65’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:174: error: ‘SDLK\_WORLD\_66’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:175: error: ‘SDLK\_WORLD\_67’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:176: error: ‘SDLK\_WORLD\_68’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:177: error: ‘SDLK\_WORLD\_69’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:178: error: ‘SDLK\_WORLD\_70’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:179: error: ‘SDLK\_WORLD\_71’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:180: error: ‘SDLK\_WORLD\_72’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:181: error: ‘SDLK\_WORLD\_73’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:182: error: ‘SDLK\_WORLD\_74’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:183: error: ‘SDLK\_WORLD\_75’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:184: error: ‘SDLK\_WORLD\_76’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:185: error: ‘SDLK\_WORLD\_77’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:186: error: ‘SDLK\_WORLD\_78’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:187: error: ‘SDLK\_WORLD\_79’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:188: error: ‘SDLK\_WORLD\_80’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:189: error: ‘SDLK\_WORLD\_81’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:190: error: ‘SDLK\_WORLD\_82’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:191: error: ‘SDLK\_WORLD\_83’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:192: error: ‘SDLK\_WORLD\_84’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:193: error: ‘SDLK\_WORLD\_85’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:194: error: ‘SDLK\_WORLD\_86’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:195: error: ‘SDLK\_WORLD\_87’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:196: error: ‘SDLK\_WORLD\_88’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:197: error: ‘SDLK\_WORLD\_89’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:198: error: ‘SDLK\_WORLD\_90’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:199: error: ‘SDLK\_WORLD\_91’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:200: error: ‘SDLK\_WORLD\_92’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:201: error: ‘SDLK\_WORLD\_93’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:202: error: ‘SDLK\_WORLD\_94’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:203: error: ‘SDLK\_WORLD\_95’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:263: error: ‘SDLK\_RMETA’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:264: error: ‘SDLK\_LMETA’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:278: error: ‘SDLK\_LAST’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c: In function ‘Key\_s\_scan’:  
rubysdl\_event\_key.c:311: warning: implicit declaration of function  
‘SDL\_GetKeyState’  
rubysdl\_event\_key.c:311: warning: assignment makes pointer from integer  
without a cast  
rubysdl\_event\_key.c: In function ‘Key\_s\_press\_p’:  
rubysdl\_event\_key.c:320: error: ‘SDLK\_FIRST’ undeclared (first use in  
this function)  
rubysdl\_event\_key.c:320: error: ‘SDLK\_LAST’ undeclared (first use in  
this function)  
make: \*\*\* [rubysdl\_event\_key.o] Error 1

---

<div class="post-metadata">

**Author:** ![spinhoo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/958977/32.png) [@spinhoo](https://www.ruby-forum.com/u/spinhoo)\
**Post date:** [March 23, 2010, 9:13am UTC](https://www.ruby-forum.com/t/help-installing-rubysdl-gem/185454/2 "2010-03-23T09:13:19Z")

</div>

Any Help!

---

<div class="post-metadata">

**Author:** ![spinhoo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/958977/32.png) [@spinhoo](https://www.ruby-forum.com/u/spinhoo)\
**Post date:** [March 23, 2010, 9:55am UTC](https://www.ruby-forum.com/t/help-installing-rubysdl-gem/185454/3 "2010-03-23T09:55:38Z")

</div>

Hello Bill

Thanks for the reply.

sdl-config --version returns 1.3.0

Venkat

Bill K. wrote:

> Venkat A. wrote:
> 
> > rubysdl\_event\_key.c  
> > rubysdl\_event\_key.c: In function ‘define\_const’:  
> > rubysdl\_event\_key.c:30: error: ‘SDLK\_FIRST’ undeclared (first use in  
> > this function)
> 
> Which version of SDL is installed on your system?
> 
> Seems perhaps rubysdl may not have been tested with  
> the version of SDL on your system.
> 
> (This is purely a guess based on the error message,  
> which seems to indicate that even though  
> rubysdl\_event\_key.c’s #include’s have succeeded,  
> the defines it is expecting aren’t available.)
> 
> Regards,
> 
> Bill

---

<div class="post-metadata">

**Author:** ![spinhoo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/958977/32.png) [@spinhoo](https://www.ruby-forum.com/u/spinhoo)\
**Post date:** [March 23, 2010, 9:48am UTC](https://www.ruby-forum.com/t/help-installing-rubysdl-gem/185454/4 "2010-03-23T09:48:57Z")

</div>

Venkat A. wrote:

> rubysdl\_event\_key.c  
> rubysdl\_event\_key.c: In function ‘define\_const’:  
> rubysdl\_event\_key.c:30: error: ‘SDLK\_FIRST’ undeclared (first use in  
> this function)

Which version of SDL is installed on your system?

Seems perhaps rubysdl may not have been tested with  
the version of SDL on your system.

(This is purely a guess based on the error message,  
which seems to indicate that even though  
rubysdl\_event\_key.c’s #include’s have succeeded,  
the defines it is expecting aren’t available.)

Regards,

Bill

---

<div class="post-metadata">

**Author:** ![spinhoo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/958977/32.png) [@spinhoo](https://www.ruby-forum.com/u/spinhoo)\
**Post date:** [March 23, 2010, 10:19am UTC](https://www.ruby-forum.com/t/help-installing-rubysdl-gem/185454/5 "2010-03-23T10:19:59Z")

</div>

Venkat A. wrote:

> sdl-config --version returns 1.3.0

My understanding is that SDL 1.3 is still evolving  
( [http://wiki.libsdl.org/moin.cgi/Roadmap](http://wiki.libsdl.org/moin.cgi/Roadmap) )  
and that several API’s may have changed since SDL  
1.2.

I’d suggest installing the latest stable release  
of SDL 1.2 ( [Simple DirectMedia Layer - SDL version 1.2.15 (historic)](http://www.libsdl.org/download-1.2.php) )

Might have better luck building rubysdl against  
that version. (But again, I am only guessing.)

Regards,

Bill

---

<div class="post-metadata">

**Author:** ![spinhoo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/958977/32.png) [@spinhoo](https://www.ruby-forum.com/u/spinhoo)\
**Post date:** [March 23, 2010, 10:35am UTC](https://www.ruby-forum.com/t/help-installing-rubysdl-gem/185454/6 "2010-03-23T10:35:12Z")

</div>

Thanks Bill

```
 Uninstalled the 1.3.0 version and found that there is 1.2.13 

```

already installed on the system. Built and installed rubysdl. It worked  
like a charm.

Venkat

Bill K. wrote:

> Venkat A. wrote:
> 
> > sdl-config --version returns 1.3.0
> 
> My understanding is that SDL 1.3 is still evolving  
> ( [http://wiki.libsdl.org/moin.cgi/Roadmap](http://wiki.libsdl.org/moin.cgi/Roadmap) )  
> and that several API’s may have changed since SDL  
> 1.2.
> 
> I’d suggest installing the latest stable release  
> of SDL 1.2 ( [Simple DirectMedia Layer - SDL version 1.2.15 (historic)](http://www.libsdl.org/download-1.2.php) )
> 
> Might have better luck building rubysdl against  
> that version. (But again, I am only guessing.)
> 
> Regards,
> 
> Bill