I am trying to use RRDtool through ruby. I have installed rrdtool and
it appears to be working(I can run the sample scripts). I downloaded
the RubyRRDtool gem and tried to install it. The install appears to
work without errors. I then tried running the example scripts for the
rrdtool gem and just requiring the gem in irb. I get the same error for
both, shown below (1). I then tried building the gem using the
instructions in the README. I did a 'ruby extconf.rb', 'make', and
'make install'. Make produces the warnings below (2), but no errors.
The install also seems to succeed, but I get the same issue as the
straight gem install. From my investigation so far, it appears that
there are a number of rrd commands that are not defined in RRDtool.so.
Is it possible the gem build is not linking against rrd correctly, and
if so, how might I fix this? I have attached the Makefile that is
produced from the extconf.rb.
(1)
irb(main):001:0> require "RRDtool"
LoadError:
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so: undefined
symbol: rrd_resize -
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so
from
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so
from
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `require'
from (irb):1
(2)
i386-redhat-linux-gcc -I. -I. -I/usr/lib/ruby/1.8/i386-linux -I. -fPIC
-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386
-mtune=generic -fasynchronous-unwind-tables -Wall -fPIC -c
rubyrrdtool.c
rubyrrdtool.c: In function \u2018rrdtool_create\u2019:
rubyrrdtool.c:317: warning: passing argument 5 of
\u2018rrd_create_r\u2019 from incompatible pointer type
rubyrrdtool.c: In function \u2018rrdtool_update\u2019:
rubyrrdtool.c:590: warning: passing argument 4 of
\u2018rrd_update_r\u2019 from incompatible pointer type
i386-redhat-linux-gcc -shared -L"/usr/lib" -o RRDtool.so rubyrrdtool.o
-lruby -lart_lgpl_2 -lfreetype -lpng -lz -lpthread -ldl -lcrypt -lm
-lc
Attachments:
http://www.ruby-forum.com/attachment/965/Makefile
···
--
Posted via http://www.ruby-forum.com/.
Haley Thrapp wrote:
I am trying to use RRDtool through ruby. I have installed rrdtool and
it appears to be working(I can run the sample scripts). I downloaded
the RubyRRDtool gem and tried to install it. The install appears to
work without errors. I then tried running the example scripts for the
rrdtool gem and just requiring the gem in irb. I get the same error for
both, shown below (1). I then tried building the gem using the
instructions in the README. I did a 'ruby extconf.rb', 'make', and
'make install'. Make produces the warnings below (2), but no errors.
The install also seems to succeed, but I get the same issue as the
straight gem install. From my investigation so far, it appears that
there are a number of rrd commands that are not defined in RRDtool.so.
Is it possible the gem build is not linking against rrd correctly, and
if so, how might I fix this? I have attached the Makefile that is
produced from the extconf.rb.
(1)
irb(main):001:0> require "RRDtool"
LoadError:
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so: undefined
symbol: rrd_resize -
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so
from
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so
from
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `require'
from (irb):1
(2)
i386-redhat-linux-gcc -I. -I. -I/usr/lib/ruby/1.8/i386-linux -I. -fPIC
-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386
-mtune=generic -fasynchronous-unwind-tables -Wall -fPIC -c
rubyrrdtool.c
rubyrrdtool.c: In function \u2018rrdtool_create\u2019:
rubyrrdtool.c:317: warning: passing argument 5 of
\u2018rrd_create_r\u2019 from incompatible pointer type
rubyrrdtool.c: In function \u2018rrdtool_update\u2019:
rubyrrdtool.c:590: warning: passing argument 4 of
\u2018rrd_update_r\u2019 from incompatible pointer type
i386-redhat-linux-gcc -shared -L"/usr/lib" -o RRDtool.so rubyrrdtool.o
-lruby -lart_lgpl_2 -lfreetype -lpng -lz -lpthread -ldl -lcrypt -lm
-lc
Attachments:
http://www.ruby-forum.com/attachment/965/Makefile
The "-lrrd" seems to be missing from your Makefile (and hence from the link step above).
Mine looks like this:
LIBS = -lrrd -lart_lgpl_2 -lfreetype -lpng -lz -lpthread -ldl -lcrypt -lm -lc
Can you show your mkmf.log?
···
--
vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407
Haley Thrapp wrote:
I am trying to use RRDtool through ruby. I have installed rrdtool and
it appears to be working(I can run the sample scripts). I downloaded
the RubyRRDtool gem and tried to install it. The install appears to
work without errors. I then tried running the example scripts for the
rrdtool gem and just requiring the gem in irb. I get the same error for
both, shown below (1). I then tried building the gem using the
instructions in the README. I did a 'ruby extconf.rb', 'make', and
'make install'. Make produces the warnings below (2), but no errors.
The install also seems to succeed, but I get the same issue as the
straight gem install. From my investigation so far, it appears that
there are a number of rrd commands that are not defined in RRDtool.so.
Is it possible the gem build is not linking against rrd correctly, and
if so, how might I fix this? I have attached the Makefile that is
produced from the extconf.rb.
(1)
irb(main):001:0> require "RRDtool"
LoadError:
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so: undefined
symbol: rrd_resize -
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so
from
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so
from
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `require'
from (irb):1
(2)
i386-redhat-linux-gcc -I. -I. -I/usr/lib/ruby/1.8/i386-linux -I. -fPIC
-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386
-mtune=generic -fasynchronous-unwind-tables -Wall -fPIC -c
rubyrrdtool.c
rubyrrdtool.c: In function \u2018rrdtool_create\u2019:
rubyrrdtool.c:317: warning: passing argument 5 of
\u2018rrd_create_r\u2019 from incompatible pointer type
rubyrrdtool.c: In function \u2018rrdtool_update\u2019:
rubyrrdtool.c:590: warning: passing argument 4 of
\u2018rrd_update_r\u2019 from incompatible pointer type
i386-redhat-linux-gcc -shared -L"/usr/lib" -o RRDtool.so rubyrrdtool.o
-lruby -lart_lgpl_2 -lfreetype -lpng -lz -lpthread -ldl -lcrypt -lm
-lc
Attachments:
http://www.ruby-forum.com/attachment/965/Makefile
I think the most recent version of RRDTool source comes bundled with a working Ruby binding, which you need to enable when you configure RRDTool. I ran into some conflicts between RRDTool and the Ruby binding package in Gentoo, and they went away when I compiled RRDTool with the Ruby bindings bundled with it.
See 180144 – confusion over RRDtool Ruby bindings; possible need for a blocker between rrdtool and ruby-rrd
and 97403 – ruby-rrd ebuild doesn't build against rrdtool-1.2.6, the latest stable
If you're not building RRDTool from source, you'll probably need to go hassle your distro's bug tracker (unless you're using Gentoo, in which case it just works.)
Joel VanderWerf wrote:
Haley Thrapp wrote:
there are a number of rrd commands that are not defined in RRDtool.so.
/usr/lib/ruby/gems/1.8/gems/RubyRRDtool-0.6.0/test/RRDtool.so: undefined
(2)
\u2018rrd_update_r\u2019 from incompatible pointer type
i386-redhat-linux-gcc -shared -L"/usr/lib" -o RRDtool.so rubyrrdtool.o
-lruby -lart_lgpl_2 -lfreetype -lpng -lz -lpthread -ldl -lcrypt -lm
-lc
Attachments:
http://www.ruby-forum.com/attachment/965/Makefile
The "-lrrd" seems to be missing from your Makefile (and hence from the
link step above).
Mine looks like this:
LIBS = -lrrd -lart_lgpl_2 -lfreetype -lpng -lz -lpthread -ldl -lcrypt
-lm -lc
Can you show your mkmf.log?
Thanks, it was the -lrrd that was missing. I had to move the .so files
so that they could be found correctly, but it appears to be working now.
Haley
···
--
Posted via http://www.ruby-forum.com/\.