# Ruby-opengl gem uses ruby1.9, even from gem1.8 **URL:** \ **Category:** Ruby\ **Created:** [May 28, 2008, 10:15am UTC](https://www.ruby-forum.com/t/ruby-opengl-gem-uses-ruby1-9-even-from-gem1-8/138846 "2008-05-28T10:15:12Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![dgm](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/df788c/32.png) [@dgm](https://www.ruby-forum.com/u/dgm)\ **Post date:** [May 28, 2008, 10:15am UTC](https://www.ruby-forum.com/t/ruby-opengl-gem-uses-ruby1-9-even-from-gem1-8/138846/1 "2008-05-28T10:15:12Z")
This is on an Ubuntu Hardy system, on x86\_64. Both Ruby 1.8 and 1.9 are installed. I was tracking down the lack of ruby.h, which surprised me, as ruby1.8-dev is installed. Scrolling up even further, though, and something just seems wrong about these three lines: rake RUBYARCHDIR=/var/lib/gems/1.8/gems/ruby-opengl-0.60.0/lib RUBYLIBDIR=/var/lib/gems/1.8/gems/ruby-opengl-0.60.0/lib extension /usr/bin/ruby1.9 mkrf\_conf.rb (in /var/lib/gems/1.8/gems/ruby-opengl-0.60.0) Why is ruby1.9 being used to run mkrf\_conf.rb? I am using a 1.8 gem – as you can see, it’s trying to install in a 1.8 path, and: $ head -1 `which gem` #! /usr/bin/ruby1.8 $ head -1 `which gem1.9` #!/usr/bin/ruby1.9 I am sure I was using ‘gem’, and not ‘gem1.9’. Full log from /var/lib/gems/1.8/gems/ruby-opengl-0.60.0/gem\_make.out: rake RUBYARCHDIR=/var/lib/gems/1.8/gems/ruby-opengl-0.60.0/lib RUBYLIBDIR=/var/lib/gems/1.8/gems/ruby-opengl-0.60.0/lib extension /usr/bin/ruby1.9 mkrf\_conf.rb (in /var/lib/gems/1.8/gems/ruby-opengl-0.60.0) rake cc -fPIC -fno-strict-aliasing -g -fPIC -Wall -DRUBY\_VERSION=190 -I/usr/include/ruby-1.9.0 -I/usr/include/ruby-1.9.0/x86\_64-linux -I/usr/lib/ruby/1.9.0/x86\_64-linux -I/usr/local/lib/site\_ruby/1.9.0 -I. -c gl.c (in /var/lib/gems/1.8/gems/ruby-opengl-0.60.0/ext/gl) In file included from gl.c:18: …/common/common.h:25:18: error: ruby.h: No such file or directory In file included from …/common/common.h:51, from gl.c:18: …/common/gl-error.h:16: warning: parameter names (without types) in function declaration …/common/gl-error.h:18: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘error\_checking’ …/common/gl-error.h:19: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘inside\_begin\_end’ In file included from …/common/common.h:54, from gl.c:18: …/common/conv.h: In function ‘num2double’: …/common/conv.h:55: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:55: warning: implicit declaration of function ‘FIXNUM\_P’ …/common/conv.h:55: warning: implicit declaration of function ‘FIX2LONG’ …/common/conv.h:55: warning: implicit declaration of function ‘TYPE’ …/common/conv.h:55: error: ‘T\_FLOAT’ undeclared (first use in this function) …/common/conv.h:55: error: (Each undeclared identifier is reported only once …/common/conv.h:55: error: for each function it appears in.) …/common/conv.h:55: warning: implicit declaration of function ‘RFLOAT’ …/common/conv.h:55: error: invalid type argument of ‘-\>’ …/common/conv.h:55: error: ‘Qtrue’ undeclared (first use in this function) …/common/conv.h:55: error: ‘Qfalse’ undeclared (first use in this function) …/common/conv.h:55: error: ‘Qnil’ undeclared (first use in this function) …/common/conv.h:55: warning: implicit declaration of function ‘rb\_num2dbl’ …/common/conv.h: In function ‘num2int’: …/common/conv.h:62: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:62: error: ‘T\_FLOAT’ undeclared (first use in this function) …/common/conv.h:62: error: invalid type argument of ‘-\>’ …/common/conv.h:62: error: ‘Qtrue’ undeclared (first use in this function) …/common/conv.h:62: error: ‘Qfalse’ undeclared (first use in this function) …/common/conv.h:62: error: ‘Qnil’ undeclared (first use in this function) …/common/conv.h:62: warning: implicit declaration of function ‘NUM2LONG’ …/common/conv.h: In function ‘num2uint’: …/common/conv.h:63: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:63: warning: implicit declaration of function ‘FIX2ULONG’ …/common/conv.h:63: error: ‘T\_FLOAT’ undeclared (first use in this function) …/common/conv.h:63: error: invalid type argument of ‘-\>’ …/common/conv.h:63: error: ‘Qtrue’ undeclared (first use in this function) …/common/conv.h:63: error: ‘Qfalse’ undeclared (first use in this function) …/common/conv.h:63: error: ‘Qnil’ undeclared (first use in this function) …/common/conv.h:63: warning: implicit declaration of function ‘NUM2ULONG’ …/common/conv.h: At top level: …/common/conv.h:114: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘cond\_GLBOOL2RUBY’ …/common/conv.h:115: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘cond\_GLBOOL2RUBY\_U’ …/common/conv.h:116: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘cond\_GLBOOL2RUBY\_LL’ …/common/conv.h:117: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘cond\_GLBOOL2RUBY\_ULL’ …/common/conv.h:118: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘cond\_GLBOOL2RUBY\_F’ …/common/conv.h:119: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘cond\_GLBOOL2RUBY\_D’ …/common/conv.h: In function ‘ary2cint’: …/common/conv.h:142: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:142: warning: implicit declaration of function ‘RARRAY’ …/common/conv.h:142: warning: implicit declaration of function ‘rb\_Array’ …/common/conv.h:142: warning: assignment makes pointer from integer without a cast …/common/conv.h:142: error: dereferencing pointer to incomplete type …/common/conv.h:142: error: dereferencing pointer to incomplete type …/common/conv.h:142: error: dereferencing pointer to incomplete type …/common/conv.h:142: warning: implicit declaration of function ‘rb\_ary\_entry’ …/common/conv.h:142: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:142: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cuint’: …/common/conv.h:143: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:143: warning: assignment makes pointer from integer without a cast …/common/conv.h:143: error: dereferencing pointer to incomplete type …/common/conv.h:143: error: dereferencing pointer to incomplete type …/common/conv.h:143: error: dereferencing pointer to incomplete type …/common/conv.h:143: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:143: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cbyte’: …/common/conv.h:144: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:144: warning: assignment makes pointer from integer without a cast …/common/conv.h:144: error: dereferencing pointer to incomplete type …/common/conv.h:144: error: dereferencing pointer to incomplete type …/common/conv.h:144: error: dereferencing pointer to incomplete type …/common/conv.h:144: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:144: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cubyte’: …/common/conv.h:145: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:145: warning: assignment makes pointer from integer without a cast …/common/conv.h:145: error: dereferencing pointer to incomplete type …/common/conv.h:145: error: dereferencing pointer to incomplete type …/common/conv.h:145: error: dereferencing pointer to incomplete type …/common/conv.h:145: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:145: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cshort’: …/common/conv.h:146: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:146: warning: assignment makes pointer from integer without a cast …/common/conv.h:146: error: dereferencing pointer to incomplete type …/common/conv.h:146: error: dereferencing pointer to incomplete type …/common/conv.h:146: error: dereferencing pointer to incomplete type …/common/conv.h:146: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:146: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cushort’: …/common/conv.h:147: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:147: warning: assignment makes pointer from integer without a cast …/common/conv.h:147: error: dereferencing pointer to incomplete type …/common/conv.h:147: error: dereferencing pointer to incomplete type …/common/conv.h:147: error: dereferencing pointer to incomplete type …/common/conv.h:147: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:147: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cboolean’: …/common/conv.h:148: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:148: warning: assignment makes pointer from integer without a cast …/common/conv.h:148: error: dereferencing pointer to incomplete type …/common/conv.h:148: error: dereferencing pointer to incomplete type …/common/conv.h:148: error: dereferencing pointer to incomplete type …/common/conv.h:148: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:148: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cfloat’: …/common/conv.h:149: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:149: warning: assignment makes pointer from integer without a cast …/common/conv.h:149: error: dereferencing pointer to incomplete type …/common/conv.h:149: error: dereferencing pointer to incomplete type …/common/conv.h:149: error: dereferencing pointer to incomplete type …/common/conv.h:149: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:149: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cdouble’: …/common/conv.h:150: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:150: warning: assignment makes pointer from integer without a cast …/common/conv.h:150: error: dereferencing pointer to incomplete type …/common/conv.h:150: error: dereferencing pointer to incomplete type …/common/conv.h:150: error: dereferencing pointer to incomplete type …/common/conv.h:150: error: ‘VALUE’ undeclared (first use in this function) …/common/conv.h:150: error: expected ‘)’ before ‘ary’ …/common/conv.h: In function ‘ary2cmatdouble’: …/common/conv.h:176: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:176: warning: implicit declaration of function ‘rb\_funcall’ …/common/conv.h:176: warning: implicit declaration of function ‘rb\_intern’ …/common/conv.h:176: error: invalid type argument of ‘-\>’ …/common/conv.h:176: warning: implicit declaration of function ‘rb\_raise’ …/common/conv.h:176: error: ‘rb\_eArgError’ undeclared (first use in this function) …/common/conv.h: In function ‘ary2cmatfloat’: …/common/conv.h:177: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:177: error: invalid type argument of ‘-\>’ …/common/conv.h:177: error: ‘rb\_eArgError’ undeclared (first use in this function) …/common/conv.h: In function ‘ary2cmatdoublecount’: …/common/conv.h:200: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:200: warning: implicit declaration of function ‘RARRAY\_LEN’ …/common/conv.h:200: warning: implicit declaration of function ‘xfree’ …/common/conv.h:200: error: ‘rb\_eArgError’ undeclared (first use in this function) …/common/conv.h: In function ‘ary2cmatfloatcount’: …/common/conv.h:201: error: expected declaration specifiers before ‘VALUE’ …/common/conv.h:201: error: ‘rb\_eArgError’ undeclared (first use in this function) In file included from gl.c:18: …/common/common.h: At top level: …/common/common.h:81: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘cProc’ …/common/common.h: In function ‘glformat\_size’: …/common/common.h:173: error: ‘rb\_eArgError’ undeclared (first use in this function) …/common/common.h: In function ‘gltype\_glformat\_unit\_size’: …/common/common.h:231: error: ‘rb\_eArgError’ undeclared (first use in this function) …/common/common.h: In function ‘get\_uniform\_size’: …/common/common.h:316: error: ‘rb\_eTypeError’ undeclared (first use in this function) …/common/common.h: At top level: …/common/common.h:338: error: expected declaration specifiers or ‘…’ before ‘VALUE’ …/common/common.h: In function ‘CheckDataSize’: …/common/common.h:344: warning: implicit declaration of function ‘RSTRING\_LEN’ …/common/common.h:344: error: ‘data’ undeclared (first use in this function) …/common/common.h:345: error: ‘rb\_eArgError’ undeclared (first use in this function) …/common/common.h: At top level: …/common/common.h:349: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘allocate\_buffer\_with\_string’ …/common/common.h: In function ‘load\_gl\_function’: …/common/common.h:390: error: ‘rb\_eNotImpError’ undeclared (first use in this function) …/common/common.h: At top level: …/common/common.h:395: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘pack\_array\_or\_pass\_string’ gl.c:20: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘module’ gl.c:22: warning: parameter names (without types) in function declaration gl.c:23: warning: parameter names (without types) in function declaration gl.c:24: warning: parameter names (without types) in function declaration gl.c:25: warning: parameter names (without types) in function declaration gl.c:26: warning: parameter names (without types) in function declaration gl.c:27: warning: parameter names (without types) in function declaration gl.c:28: warning: parameter names (without types) in function declaration gl.c:29: warning: parameter names (without types) in function declaration gl.c:30: warning: parameter names (without types) in function declaration gl.c:31: warning: parameter names (without types) in function declaration gl.c:32: warning: parameter names (without types) in function declaration gl.c:33: warning: parameter names (without types) in function declaration gl.c:34: warning: parameter names (without types) in function declaration gl.c:35: warning: parameter names (without types) in function declaration gl.c: In function ‘GetOpenglVersion’: gl.c:49: error: ‘error\_checking’ undeclared (first use in this function) gl.c:49: error: ‘Qtrue’ undeclared (first use in this function) gl.c:49: error: ‘inside\_begin\_end’ undeclared (first use in this function) gl.c:49: error: ‘Qfalse’ undeclared (first use in this function) gl.c:51: warning: implicit declaration of function ‘sscanf’ gl.c:51: warning: incompatible implicit declaration of built-in function ‘sscanf’ gl.c: In function ‘GetOpenglExtensions’: gl.c:79: error: ‘error\_checking’ undeclared (first use in this function) gl.c:79: error: ‘Qtrue’ undeclared (first use in this function) gl.c:79: error: ‘inside\_begin\_end’ undeclared (first use in this function) gl.c:79: error: ‘Qfalse’ undeclared (first use in this function) gl.c:81: warning: implicit declaration of function ‘strlen’ gl.c:81: warning: incompatible implicit declaration of built-in function ‘strlen’ gl.c:82: warning: implicit declaration of function ‘ALLOC\_N’ gl.c:82: error: expected expression before ‘GLchar’ gl.c:82: warning: assignment makes pointer from integer without a cast gl.c:83: warning: implicit declaration of function ‘strcpy’ gl.c:83: warning: incompatible implicit declaration of built-in function ‘strcpy’ gl.c: In function ‘CheckExtension’: gl.c:106: warning: incompatible implicit declaration of built-in function ‘strlen’ gl.c:107: error: expected expression before ‘GLchar’ gl.c:107: warning: assignment makes pointer from integer without a cast gl.c:108: warning: incompatible implicit declaration of built-in function ‘strcpy’ gl.c:112: warning: implicit declaration of function ‘strstr’ gl.c:112: warning: incompatible implicit declaration of built-in function ‘strstr’ gl.c: In function ‘CheckVersionExtension’: gl.c:128: warning: incompatible implicit declaration of built-in function ‘sscanf’ gl.c: At top level: gl.c:140: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘\_\_attribute\_\_’ before ‘IsAvailable’ gl.c:142: error: expected identifier or ‘(’ before ‘{’ token gl.c: In function ‘CheckBufferBinding’: gl.c:175: error: ‘rb\_eRuntimeError’ undeclared (first use in this function) gl.c:179: error: ‘error\_checking’ undeclared (first use in this function) gl.c:179: error: ‘Qtrue’ undeclared (first use in this function) gl.c:179: error: ‘inside\_begin\_end’ undeclared (first use in this function) gl.c:179: error: ‘Qfalse’ undeclared (first use in this function) gl.c: In function ‘Init\_gl’: gl.c:185: error: ‘VALUE’ undeclared (first use in this function) gl.c:185: error: expected ‘;’ before ‘VERSION’ gl.c:187: error: ‘module’ undeclared (first use in this function) gl.c:187: warning: implicit declaration of function ‘rb\_define\_module’ gl.c:189: warning: implicit declaration of function ‘rb\_define\_const’ gl.c:189: error: ‘VERSION’ undeclared (first use in this function) gl.c:208: warning: implicit declaration of function ‘rb\_define\_module\_function’ gl.c:208: error: ‘IsAvailable’ undeclared (first use in this function) rake aborted! Command failed with status (1): [cc -fPIC -fno-strict-aliasing -g -fPIC …] /var/lib/gems/1.8/gems/ruby-opengl-0.60.0/ext/gl/Rakefile:29:in `block in \’ (See full trace by running task with --trace) rake aborted! Command failed with status (1): [rake…] (See full trace by running task with --trace) ---
**Author:** ![dgm](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/df788c/32.png) [@dgm](https://www.ruby-forum.com/u/dgm)\ **Post date:** [May 28, 2008, 10:56am UTC](https://www.ruby-forum.com/t/ruby-opengl-gem-uses-ruby1-9-even-from-gem1-8/138846/2 "2008-05-28T10:56:37Z")
On May 28, 2008, at 01:14 AM, David M. wrote: > rake RUBYARCHDIR=/var/lib/gems/1.8/gems/ruby-opengl-0.60.0/lib > $ head -1 `which gem1.9` > #!/usr/bin/ruby1.9 head -1 `which rake` ---
**Author:** ![dgm](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/df788c/32.png) [@dgm](https://www.ruby-forum.com/u/dgm)\ **Post date:** [May 28, 2008, 12:25pm UTC](https://www.ruby-forum.com/t/ruby-opengl-gem-uses-ruby1-9-even-from-gem1-8/138846/3 "2008-05-28T12:25:22Z")
On Wednesday 28 May 2008 03:55:32 Eric H. wrote: > > #! /usr/bin/ruby1.8 > > $ head -1 `which gem1.9` > > #!/usr/bin/ruby1.9 > > head -1 `which rake` Ah. Thanks: $ head -1 `which rake` #!/usr/bin/ruby1.9 After installing rake via gem1.8, I still get the same on rake and rake1.9 – but they are not the same file: $ diff /usr/bin/rake /usr/bin/rake1.9 1a2,4 > #– > > # Copyright © 2003, 2004, 2005, 2006, 2007 Jim W. ## 3c6,11 \< # This file was generated by RubyGems. > # Permission is hereby granted, free of charge, to any person obtaining a copy > # of this software and associated documentation files (the “Software”), to > > # deal in the Software without restriction, including without limitation the > > # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or > # sell copies of the Software, and to permit persons to whom the Software is > > # furnished to do so, subject to the following conditions: ## 5,6c13,14 \< # The application ‘rake’ is installed as part of a gem, and \< # this file is here to facilitate running it. > # The above copyright notice and this permission notice shall be included in > > # all copies or substantial portions of the Software. 7a16,23 > # THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR > > # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, > > # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE > # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER > > # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING > > # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS > # IN THE SOFTWARE. > > #++ > 9,15c25,29 > \< require ‘rubygems’ > \< > \< version = “\>= 0” > \< > \< if ARGV.first =~ /^_(.\*)_$/ and Gem::Version.correct? $1 then > \< version = $1 > \< ARGV.shift * * * > begin > require ‘rake’ > rescue LoadError > require ‘rubygems’ > require ‘rake’ > 17,19c31 > \< > \< gem ‘rake’, version > \< load ‘rake’ * * * ---
**Author:** ![dgm](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/df788c/32.png) [@dgm](https://www.ruby-forum.com/u/dgm)\ **Post date:** [May 28, 2008, 10:39pm UTC](https://www.ruby-forum.com/t/ruby-opengl-gem-uses-ruby1-9-even-from-gem1-8/138846/4 "2008-05-28T22:39:11Z")
On Wednesday 28 May 2008 14:17:31 Eric H. wrote: > They should have a different shebang line. Re-run `gem install rake` > again to make plain `rake` be the 1.8 one. I just did, and it has a 1.9 shebang. I’m pretty sure I tried this before. > You may want to add “install: --format-executable” to your ~/.gemrc to > make gem add 1.8 or 1.9 to gem executable names so that they don’t > step on each others’ toes. Ok, guessing that will be in root’s homedir if I install gems via sudo? And would there still be a default ‘rake’ command? If so, which would it use? (Configurable?) ---
**Author:** ![dgm](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/df788c/32.png) [@dgm](https://www.ruby-forum.com/u/dgm)\ **Post date:** [May 28, 2008, 9:32pm UTC](https://www.ruby-forum.com/t/ruby-opengl-gem-uses-ruby1-9-even-from-gem1-8/138846/5 "2008-05-28T21:32:00Z")
On May 28, 2008, at 03:24 AM, David M. wrote: > > > rake RUBYARCHDIR=/var/lib/gems/1.8/gems/ruby-opengl-0.60.0/lib > > > $ head -1 `which gem1.9` > > > rake1.9 – > > > but they are not the same file: > > $ diff /usr/bin/rake /usr/bin/rake1.9 > 1a2,4 > > > #– > > > > # Copyright © 2003, 2004, 2005, 2006, 2007 Jim W. They should have a different shebang line. Re-run `gem install rake` again to make plain `rake` be the 1.8 one. You may want to add “install: --format-executable” to your ~/.gemrc to make gem add 1.8 or 1.9 to gem executable names so that they don’t step on each others’ toes. ---
**Author:** ![dgm](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/df788c/32.png) [@dgm](https://www.ruby-forum.com/u/dgm)\ **Post date:** [May 29, 2008, 4:12am UTC](https://www.ruby-forum.com/t/ruby-opengl-gem-uses-ruby1-9-even-from-gem1-8/138846/6 "2008-05-29T04:12:06Z")
On May 28, 2008, at 13:19 PM, David M. wrote: > On Wednesday 28 May 2008 14:17:31 Eric H. wrote: > > > They should have a different shebang line. Re-run `gem install rake` > > again to make plain `rake` be the 1.8 one. > > I just did, and it has a 1.9 shebang. I’m pretty sure I tried this > before. Then does `gem env` report 1.9 as the ruby version? > > You may want to add “install: --format-executable” to your ~/.gemrc > > to > > make gem add 1.8 or 1.9 to gem executable names so that they don’t > > step on each others’ toes. > > Ok, guessing that will be in root’s homedir if I install gems via > sudo? In `sudo ruby -e 'p ENV["HOME"]'`, which is the my homedir for me. > And would there still be a default ‘rake’ command? If so, which > would it use? > (Configurable?) No, you would have to make a symlink to whichever you wanted to be the default.