command-t.vim could not load the C extension

After a seemingly successful install, I get the error "command-t.vim could not load the C extension" when running :CommandT. Is this common?

Hi,

i have the exact same problem as the original poster. Everything seems to install fine, but <leader>t fails with "command-t.vim could not load the C extension" Here´s my system info:

vim version:

VIM - Vi IMproved 7.2 (2008 Aug 9, compiled Jul 29 2010 19:05:14)
MacOS X (unix) version
Included patches: 1-446
Compiled by alexander@192.168.10.177
Normal version without GUI.  Features included (+) or not (-):
-arabic +autocmd -balloon_eval -browse +builtin_terms +byte_offset +cindent 
-clientserver -clipboard +cmdline_compl +cmdline_hist +cmdline_info +comments 
+cryptv -cscope +cursorshape +dialog_con +diff +digraphs -dnd -ebcdic 
-emacs_tags +eval +ex_extra +extra_search -farsi +file_in_path +find_in_path 
+float +folding -footer +fork() -gettext -hangul_input -iconv +insert_expand 
+jumplist -keymap -langmap +libcall +linebreak +lispindent +listcmds +localmap 
+menu +mksession +modify_fname +mouse -mouseshape -mouse_dec -mouse_gpm 
-mouse_jsbterm -mouse_netterm -mouse_sysmouse +mouse_xterm -multi_byte 
+multi_lang -mzscheme -netbeans_intg -osfiletype +path_extra -perl +postscript 
+printer -profile -python +quickfix +reltime -rightleft +ruby +scrollbind 
-signs +smartindent -sniff +startuptime +statusline -sun_workshop +syntax 
+tag_binary +tag_old_static -tag_any_white -tcl +terminfo +termresponse 
+textobjects +title -toolbar +user_commands +vertsplit +virtualedit +visual 
+visualextra +viminfo +vreplace +wildignore +wildmenu +windows +writebackup 
-X11 -xfontset -xim -xsmp -xterm_clipboard -xterm_save 
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
      user exrc file: "$HOME/.exrc"
  fall-back for $VIM: "/usr/local/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H   -DMACOS_X_UNIX -no-cpp-precomp -I/Developer/Headers/FlatCarbon  -g -O2 -D_FORTIFY_SOURCE=1       -I/usr/local/lib/ruby/1.8/i686-darwin10.4.0 -DRUBY_VERSION=18 
Linking: gcc   -L.   -L/usr/local/lib -o vim       -lm -lncurses  -lruby-static -lobjc 

output of ruby extconf.rb:

checking for ruby.h... yes
creating Makefile

output of make:

gcc -I. -I/usr/local/lib/ruby/1.8/i686-darwin10.4.0 -I/usr/local/lib/ruby/1.8/i686-darwin10.4.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2 -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c ext.c
gcc -I. -I/usr/local/lib/ruby/1.8/i686-darwin10.4.0 -I/usr/local/lib/ruby/1.8/i686-darwin10.4.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2 -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c match.c
gcc -I. -I/usr/local/lib/ruby/1.8/i686-darwin10.4.0 -I/usr/local/lib/ruby/1.8/i686-darwin10.4.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2 -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c matcher.c
cc -dynamic -bundle -undefined suppress -flat_namespace -o ext.bundle ext.o match.o matcher.o -L. -L/usr/local/lib -L.     -ldl -lobjc 

operating system: os x snow leopard

ruby version:

ruby 1.8.7 (2010-06-23 patchlevel 299) [i686-darwin10.4.0]

vim is linked against the same ruby the system is using

thanks for your help!

alexander

Hi there,

thank you very much for looking into this!

I´ve tried manually editing the Makefile with -lruby-static this lead to vim segfaulting on me ;)

Vim: Caught deadly signal SEGV
Vim: Finished.

And here´s my Makefile:

SHELL = /bin/sh

#### Start of system configuration section. ####

srcdir = .
topdir = /usr/local/lib/ruby/1.8/i686-darwin10.4.0
hdrdir = $(topdir)
VPATH = $(srcdir):$(topdir):$(hdrdir)
exec_prefix = $(prefix)
prefix = $(DESTDIR)/usr/local
sharedstatedir = $(prefix)/com
mandir = $(datarootdir)/man
psdir = $(docdir)
oldincludedir = $(DESTDIR)/usr/include
localedir = $(datarootdir)/locale
bindir = $(exec_prefix)/bin
libexecdir = $(exec_prefix)/libexec
sitedir = $(libdir)/ruby/site_ruby
htmldir = $(docdir)
vendorarchdir = $(vendorlibdir)/$(sitearch)
includedir = $(prefix)/include
infodir = $(datarootdir)/info
vendorlibdir = $(vendordir)/$(ruby_version)
sysconfdir = $(prefix)/etc
libdir = $(exec_prefix)/lib
sbindir = $(exec_prefix)/sbin
rubylibdir = $(libdir)/ruby/$(ruby_version)
docdir = $(datarootdir)/doc/$(PACKAGE)
dvidir = $(docdir)
vendordir = $(libdir)/ruby/vendor_ruby
datarootdir = $(prefix)/share
pdfdir = $(docdir)
archdir = $(rubylibdir)/$(arch)
sitearchdir = $(sitelibdir)/$(sitearch)
datadir = $(datarootdir)
localstatedir = $(prefix)/var
sitelibdir = $(sitedir)/$(ruby_version)

CC = gcc
LIBRUBY = $(LIBRUBY_A)
LIBRUBY_A = lib$(RUBY_SO_NAME)-static.a
LIBRUBYARG_SHARED = 
LIBRUBYARG_STATIC = -l$(RUBY_SO_NAME)-static

RUBY_EXTCONF_H = 
CFLAGS   =  -fno-common -g -O2 -pipe -fno-common $(cflags) 
INCFLAGS = -I. -I$(topdir) -I$(hdrdir) -I$(srcdir)
DEFS     = 
CPPFLAGS = -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE $(DEFS) $(cppflags)
CXXFLAGS = $(CFLAGS) 
ldflags  = -L. 
dldflags = 
archflag = 
DLDFLAGS = $(ldflags) $(dldflags) $(archflag)
LDSHARED = cc -dynamic -bundle -undefined suppress -flat_namespace
AR = ar
EXEEXT = 

RUBY_INSTALL_NAME = ruby
RUBY_SO_NAME = ruby
arch = i686-darwin10.4.0
sitearch = i686-darwin10.4.0
ruby_version = 1.8
ruby = /usr/local/bin/ruby
RUBY = $(ruby)
RM = rm -f
MAKEDIRS = mkdir -p
INSTALL = /usr/bin/install -c
INSTALL_PROG = $(INSTALL) -m 0755
INSTALL_DATA = $(INSTALL) -m 644
COPY = cp

#### End of system configuration section. ####

preload = 

libpath = . $(libdir)
LIBPATH =  -L. -L$(libdir)
DEFFILE = 

CLEANFILES = mkmf.log
DISTCLEANFILES = 

extout = 
extout_prefix = 
target_prefix = 
LOCAL_LIBS = 
LIBS =   -ldl -lobjc  
SRCS = ext.c match.c matcher.c
OBJS = ext.o match.o matcher.o
TARGET = ext
DLLIB = $(TARGET).bundle
EXTSTATIC = 
STATIC_LIB = 

BINDIR        = $(bindir)
RUBYCOMMONDIR = $(sitedir)$(target_prefix)
RUBYLIBDIR    = $(sitelibdir)$(target_prefix)
RUBYARCHDIR   = $(sitearchdir)$(target_prefix)

TARGET_SO     = $(DLLIB)
CLEANLIBS     = $(TARGET).bundle $(TARGET).il? $(TARGET).tds $(TARGET).map
CLEANOBJS     = *.o *.a *.s[ol] *.pdb *.exp *.bak

all:		$(DLLIB)
static:		$(STATIC_LIB)

clean:
		@-$(RM) $(CLEANLIBS) $(CLEANOBJS) $(CLEANFILES)

distclean:	clean
		@-$(RM) Makefile $(RUBY_EXTCONF_H) conftest.* mkmf.log
		@-$(RM) core ruby$(EXEEXT) *~ $(DISTCLEANFILES)

realclean:	distclean
install: install-so install-rb

install-so: $(RUBYARCHDIR)
install-so: $(RUBYARCHDIR)/$(DLLIB)
$(RUBYARCHDIR)/$(DLLIB): $(DLLIB)
	$(INSTALL_PROG) $(DLLIB) $(RUBYARCHDIR)
install-rb: pre-install-rb install-rb-default
install-rb-default: pre-install-rb-default
pre-install-rb: Makefile
pre-install-rb-default: Makefile
$(RUBYARCHDIR):
	$(MAKEDIRS) $@

site-install: site-install-so site-install-rb
site-install-so: install-so
site-install-rb: install-rb

.SUFFIXES: .c .m .cc .cxx .cpp .C .o

.cc.o:
	$(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) -c $<

.cxx.o:
	$(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) -c $<

.cpp.o:
	$(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) -c $<

.C.o:
	$(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) -c $<

.c.o:
	$(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) -c $<

$(DLLIB): $(OBJS) Makefile
	@-$(RM) $@
	$(LDSHARED) -o $@ $(OBJS) $(LIBPATH) $(DLDFLAGS) $(LOCAL_LIBS) $(LIBS)



###
# Copyright 2010 Wincent Colaiuta. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

CFLAGS += -std=c99 -Wall -Wextra -Wno-unused-parameter

thanks again and kind regards,

alexander

I had the same problem after pulling the git repo into .vim/bundle and running rake make with (rvm) 1.9.2.

I tried adding -lruby-static and then rerunning make, but it didn't seem to help.

What ended up working: regenerating the Makefile with (rvm) 1.8.7 and then adding -lruby-static. Unfortunately I'm a newb, so I'm not sure why what I did worked, but I hope it's helpful.

I also had the same problem. Doing what Alan mentioned the above post helped resolving it. I use snow leopard 10.6.4 + macvim 7.3(latest avaiable ) + ruby 1.8.7

I have the same error. The extconf.rb and make perform same as above without errors. Running the two commands, I get:

% ruby -r ~/.vim/ruby/command-t/ext -e 'p CommandT::Match.methods'
["private_class_method", "inspect", "name", "tap", "clone", "public_methods", "object_id", "__send__", "method_defined?", "instance_variable_defined?", "equal?", "freeze", "extend", "send", "const_defined?", "methods", "ancestors", "module_eval", "instance_method", "hash", "autoload?", "dup", "to_enum", "instance_methods", "public_method_defined?", "instance_variables", "class_variable_defined?", "eql?", "constants", "instance_eval", "id", "module_exec", "singleton_methods", "const_missing", "taint", "instance_variable_get", "frozen?", "enum_for", "private_method_defined?", "public_instance_methods", "display", "instance_of?", "superclass", "method", "to_a", "included_modules", "const_get", "instance_exec", "type", "<", "protected_methods", "<=>", "class_eval", "==", "class_variables", ">", "===", "instance_variable_set", "protected_instance_methods", "protected_method_defined?", "respond_to?", "kind_of?", ">=", "public_class_method", "to_s", "<=", "const_set", "allocate", "class", "new", "private_methods", "=~", "tainted?", "__id__", "class_exec", "autoload", "untaint", "nil?", "private_instance_methods", "include?", "is_a?"]

And, inside mvim, running :ruby p(require 'command-t/ext') gives

LoadError: /Users/jdf/.vim/ruby/command-t/ext.bundle: dlopen(/Users/jdf/.vim/ruby/command-t/ext.bundle, 9): no suitable image found.  Did find:

Hi!

I had the same problem, with OSX Snow Leopard, MacVim 7.3. I found a solution:

1. Manually edit your generated Makefile and replace 'x86_64' with "i386" in every occurrence.

then, run:

$ make clean all
$ sudo make install

then run your macvim... it should work.

best! matias

changing to i386 gets command-t to work for me on mac os x lion

however during make a warning is thrown: ld: warning: ignoring file /Users/asjf/.rvm/rubies/ruby-1.8.7-p352/lib/libruby.dylib, file was built for unsupported file format which is not the architecture being linked (i386)

don't know if that may have any side effects

Hello, I'm also having these issues, using MacVim on OS 10.7 with Pathogen. So far, none of the posts here have helped.

$ mvim --version
VIM - Vi IMproved 7.3 (2010 Aug 15, compiled Jan  2 2012 17:38:47)
MacOS X (unix) version
Included patches: 1-390
Compiled by Bjorn Winckler <bjorn.winckler@gmail.com>
Huge version with MacVim GUI.  Features included (+) or not (-):
+arabic +autocmd +balloon_eval +browse ++builtin_terms +byte_offset +cindent 
+clientserver +clipboard +cmdline_compl +cmdline_hist +cmdline_info +comments 
+conceal +cryptv +cscope +cursorbind +cursorshape +dialog_con_gui +diff 
+digraphs +dnd -ebcdic +emacs_tags +eval +ex_extra +extra_search +farsi 
+file_in_path +find_in_path +float +folding -footer +fork() +fullscreen 
-gettext -hangul_input +iconv +insert_expand +jumplist +keymap +langmap 
+libcall +linebreak +lispindent +listcmds +localmap -lua +menu +mksession 
+modify_fname +mouse +mouseshape +mouse_dec -mouse_gpm -mouse_jsbterm 
+mouse_netterm -mouse_sysmouse +mouse_xterm +mouse_urxvt +multi_byte 
+multi_lang -mzscheme +netbeans_intg +odbeditor +path_extra +perl 
+persistent_undo +postscript +printer +profile +python -python3 +quickfix 
+reltime +rightleft +ruby +scrollbind +signs +smartindent -sniff +startuptime 
+statusline -sun_workshop +syntax +tag_binary +tag_old_static -tag_any_white 
-tcl +terminfo +termresponse +textobjects +title +toolbar +transparency 
+user_commands +vertsplit +virtualedit +visual +visualextra +viminfo +vreplace 
+wildignore +wildmenu +windows +writebackup -X11 -xfontset +xim -xsmp 
-xterm_clipboard -xterm_save 
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
      user exrc file: "$HOME/.exrc"
  system gvimrc file: "$VIM/gvimrc"
    user gvimrc file: "$HOME/.gvimrc"
    system menu file: "$VIMRUNTIME/menu.vim"
  fall-back for $VIM: "/Applications/MacVim.app/Contents/Resources/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_MACVIM -Wall -Wno-unknown-pragmas -pipe  -DMACOS_X_UNIX -no-cpp-precomp  -g -O2 -arch i386 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1      
Linking: gcc   -L.    -L.         -arch i386 -L/usr/local/lib -o Vim -framework Cocoa -framework Carbon      -lncurses  -liconv -framework Cocoa    -fstack-protector -L/usr/local/lib  -L/System/Library/Perl/5.12/darwin-thread-multi-2level/CORE -lperl -lm -lutil -lc -framework Python   -framework Ruby

$ rake make
/Users/raphael/.rvm/rubies/ree-1.8.7-2011.03/bin/ruby extconf.rb
checking for ruby.h... yes
creating Makefile
/usr/bin/gcc-4.2  -I. -I/opt/local/include -I/Users/raphael/.rvm/rubies/ree-1.8.7-2011.03/lib/ruby/1.8/i686-darwin11.1.0 -I/Users/raphael/.rvm/rubies/ree-1.8.7-2011.03/lib/ruby/1.8/i686-darwin11.1.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2  -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c ext.c
/usr/bin/gcc-4.2  -I. -I/opt/local/include -I/Users/raphael/.rvm/rubies/ree-1.8.7-2011.03/lib/ruby/1.8/i686-darwin11.1.0 -I/Users/raphael/.rvm/rubies/ree-1.8.7-2011.03/lib/ruby/1.8/i686-darwin11.1.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2  -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c match.c
/usr/bin/gcc-4.2  -I. -I/opt/local/include -I/Users/raphael/.rvm/rubies/ree-1.8.7-2011.03/lib/ruby/1.8/i686-darwin11.1.0 -I/Users/raphael/.rvm/rubies/ree-1.8.7-2011.03/lib/ruby/1.8/i686-darwin11.1.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2  -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c matcher.c
cc -dynamic -bundle -undefined suppress -flat_namespace -o ext.bundle ext.o match.o matcher.o -L. -L/Users/raphael/.rvm/rubies/ree-1.8.7-2011.03/lib -L.     -L/opt/local/lib -ldl -lobjc  
ld: warning: directory not found for option '-L/opt/local/lib'

$ ruby --version
ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-darwin11.1.0], MBARI 0x6770, Ruby Enterprise Edition 2011.03

Alright, I'm having these issues, too. I've attempted everything here to no avail. I'm a bit of a noob, so please bear with me. I'm on OS X 10.7 and using Pathogen. I'm trying to use Command-T as a submodule of my dotfiles directory, if that makes a difference.

$ mvim --version
VIM - Vi IMproved 7.3 (2010 Aug 15, compiled Jan  2 2012 17:38:47)
MacOS X (unix) version
Included patches: 1-390
Compiled by Bjorn Winckler <bjorn.winckler@gmail.com>
Huge version with MacVim GUI.  Features included (+) or not (-):
+arabic +autocmd +balloon_eval +browse ++builtin_terms +byte_offset +cindent 
+clientserver +clipboard +cmdline_compl +cmdline_hist +cmdline_info +comments 
+conceal +cryptv +cscope +cursorbind +cursorshape +dialog_con_gui +diff 
+digraphs +dnd -ebcdic +emacs_tags +eval +ex_extra +extra_search +farsi 
+file_in_path +find_in_path +float +folding -footer +fork() +fullscreen 
-gettext -hangul_input +iconv +insert_expand +jumplist +keymap +langmap 
+libcall +linebreak +lispindent +listcmds +localmap -lua +menu +mksession 
+modify_fname +mouse +mouseshape +mouse_dec -mouse_gpm -mouse_jsbterm 
+mouse_netterm -mouse_sysmouse +mouse_xterm +mouse_urxvt +multi_byte 
+multi_lang -mzscheme +netbeans_intg +odbeditor +path_extra +perl 
+persistent_undo +postscript +printer +profile +python -python3 +quickfix 
+reltime +rightleft +ruby +scrollbind +signs +smartindent -sniff +startuptime 
+statusline -sun_workshop +syntax +tag_binary +tag_old_static -tag_any_white 
-tcl +terminfo +termresponse +textobjects +title +toolbar +transparency 
+user_commands +vertsplit +virtualedit +visual +visualextra +viminfo +vreplace 
+wildignore +wildmenu +windows +writebackup -X11 -xfontset +xim -xsmp 
-xterm_clipboard -xterm_save 
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
      user exrc file: "$HOME/.exrc"
  system gvimrc file: "$VIM/gvimrc"
    user gvimrc file: "$HOME/.gvimrc"
    system menu file: "$VIMRUNTIME/menu.vim"
  fall-back for $VIM: "/Applications/MacVim.app/Contents/Resources/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_MACVIM -Wall -Wno-unknown-pragmas -pipe  -DMACOS_X_UNIX -no-cpp-precomp  -g -O2 -arch i386 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1      
Linking: gcc   -L.    -L.         -arch i386 -L/usr/local/lib -o Vim -framework Cocoa -framework Carbon      -lncurses  -liconv -framework Cocoa    -fstack-protector -L/usr/local/lib  -L/System/Library/Perl/5.12/darwin-thread-multi-2level/CORE -lperl -lm -lutil -lc -framework Python   -framework Ruby

ruby 1.8.7 (2012-02-08 patchlevel 358) [i686-darwin11.4.0]

So if I'm understanding this correctly, MacVim 7.3 should play nicely with 1.8.7, which is what I'm using, but suddenly...

$ ruby extconf.rb 
checking for ruby.h... yes
creating Makefile

$ make
/usr/bin/gcc-4.2 -I. -I/Users/ethanmuller/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/i686-darwin11.4.0 -I/Users/ethanmuller/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/i686-darwin11.4.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2  -fno-common -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c ext.c
/usr/bin/gcc-4.2 -I. -I/Users/ethanmuller/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/i686-darwin11.4.0 -I/Users/ethanmuller/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/i686-darwin11.4.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2  -fno-common -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c match.c
/usr/bin/gcc-4.2 -I. -I/Users/ethanmuller/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/i686-darwin11.4.0 -I/Users/ethanmuller/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/i686-darwin11.4.0 -I. -DHAVE_RUBY_H  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -g -O2  -fno-common -pipe -fno-common   -std=c99 -Wall -Wextra -Wno-unused-parameter -c matcher.c
cc -dynamic -bundle -undefined suppress -flat_namespace -o ext.bundle ext.o match.o matcher.o -L. -L/Users/ethanmuller/.rvm/rubies/ruby-1.8.7-p358/lib -L.     -lruby  -ldl -lobjc

:CommandT

command-t.vim could not load the C extension
Please see INSTALLATION and TROUBLE-SHOOTING in the help
For more information type:    :help command-t

Dang it. I'm stumped.

I fixed my own problem. Here's what I think was happening. Let me know if I'm wrong.

I was using RVM's 1.8.7 instead of OS X's 1.8.7. I entirely disabled RVM to compile Command-T, and it worked. I know next to nothing about Ruby, and even less about RVM. That was my problem, I think.

i had the same problem, it's clearly a version issue of OS X ruby, RVM Ruby and MACVIM Ruby version.

What i did to solve the problem:

1. Check what version of ruby you are using:

ruby -v

2. If it is not 1.8.7, install it. I did it with rvm:

rvm install 1.8.7

3. Use ruby 1.8.7

rvm use 1.8.7

4. Download command-t plugin and install it