Link against MacPorts Ruby instead of system Ruby
On Mavericks, I am developing a tool that uses an embedded Ruby interpreter and am trying to link it against my MacPorts installation of Ruby 2.1. However, while it successfully builds and runs with the following command: gcc -Wall -v -o test test.c -lruby it is linked against the system Ruby, 2.0. (Apple has apparently replaced MacRuby with standard Ruby in Mavericks.) Can anyone suggest the correct command-line invocation to point my tool at MacPorts Ruby instead? --Kevin -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
Hi, You need to use the -L option to tell the linker to look in your MacPorts installation. Also, if you want a particular ruby version, it would be better I think to explicitly link against that, rather than relying on what ‘libruby’ point to so (if your installation is in the default prefix) use -L/opt/local/lib -lruby.2.1 Chris On 26 Apr 2014, at 2:55pm, Kevin Walzer k...@codebykevin.com wrote: On Mavericks, I am developing a tool that uses an embedded Ruby interpreter and am trying to link it against my MacPorts installation of Ruby 2.1. However, while it successfully builds and runs with the following command: gcc -Wall -v -o test test.c -lruby it is linked against the system Ruby, 2.0. (Apple has apparently replaced MacRuby with standard Ruby in Mavericks.) Can anyone suggest the correct command-line invocation to point my tool at MacPorts Ruby instead? --Kevin -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users smime.p7s Description: S/MIME cryptographic signature ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
p.s. You probably also should use the -I option, to tell gcc to take the ruby includes from /opt/local/include/ruby-2.1.0/ as well, otherwise it will pick up the system ones, and thus there will be a miss match. On 26 Apr 2014, at 3:16pm, Christopher Jones jon...@hep.phy.cam.ac.uk wrote: Hi, You need to use the -L option to tell the linker to look in your MacPorts installation. Also, if you want a particular ruby version, it would be better I think to explicitly link against that, rather than relying on what ‘libruby’ point to so (if your installation is in the default prefix) use -L/opt/local/lib -lruby.2.1 Chris On 26 Apr 2014, at 2:55pm, Kevin Walzer k...@codebykevin.com wrote: On Mavericks, I am developing a tool that uses an embedded Ruby interpreter and am trying to link it against my MacPorts installation of Ruby 2.1. However, while it successfully builds and runs with the following command: gcc -Wall -v -o test test.c -lruby it is linked against the system Ruby, 2.0. (Apple has apparently replaced MacRuby with standard Ruby in Mavericks.) Can anyone suggest the correct command-line invocation to point my tool at MacPorts Ruby instead? --Kevin -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users smime.p7s Description: S/MIME cryptographic signature ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
On 4/26/14, 10:16 AM, Christopher Jones wrote: -L/opt/local/lib -lruby.2.1 This worked great, thank you! -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
On 4/26/14, 10:21 AM, Christopher Jones wrote: p.s. You probably also should use the -I option, to tell gcc to take the ruby includes from /opt/local/include/ruby-2.1.0/ as well, otherwise it will pick up the system ones, and thus there will be a miss match. ...and this proved unnecessary. So easy! -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
Hi, On 26 Apr 2014, at 04:38 pm, Kevin Walzer k...@codebykevin.com wrote: On 4/26/14, 10:21 AM, Christopher Jones wrote: p.s. You probably also should use the -I option, to tell gcc to take the ruby includes from /opt/local/include/ruby-2.1.0/ as well, otherwise it will pick up the system ones, and thus there will be a miss match. ...and this proved unnecessary. So easy! Do you not include any ruby headers in your code ? If you do, you should make sure to pick those matching the library you are using. It might well work without, but that will be just by pure chance.. -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
On 4/26/14, 12:27 PM, Chris Jones wrote: Do you not include any ruby headers in your code ? If you do, you should make sure to pick those matching the library you are using. It might well work without, but that will be just by pure chance.. Just this: #include ruby/ruby.h If I use the -I flag, like so: gcc -Wall -v -o run run.c -L/opt/local/lib -lruby.2.1 -I/opt/local/include/ruby-2.1.0/ -I/opt/local/include/ruby-2.1.0/ then it fails to compile, with this error: #include ... search starts here: /opt/local/include/ruby-2.1.0 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/5.1/include /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks (framework directory) End of search list. In file included from run.c:1: /opt/local/include/ruby-2.1.0/ruby/ruby.h:24:10: fatal error: 'ruby/config.h' file not found #include ruby/config.h ^ Ruby seems to have a convoluted batch of headers; multiple versions of ruby.h are located in the tree for reasons unknown to me. I've seen this error before when trying to compile against MacPorts Ruby and trying to guess at the include path. Any suggestions, especially when the other invocation works as expected? --Kevin -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
On Sat, Apr 26, 2014 at 12:59 PM, Kevin Walzer k...@codebykevin.com wrote: Any suggestions, especially when the other invocation works as expected? It may link successfully but lead to obscure core dumps at runtime, if you're mixing the system ruby headers with a different ruby installation's libraries. -- brandon s allbery kf8nh sine nomine associates allber...@gmail.com ballb...@sinenomine.net unix, openafs, kerberos, infrastructure, xmonadhttp://sinenomine.net ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
On 4/26/14, 1:38 PM, Brandon Allbery wrote: It may link successfully but lead to obscure core dumps at runtime, if you're mixing the system ruby headers with a different ruby installation's libraries. I understand that, but I am still not clear on how to pick up the MacPorts headers completely. The invocation Chris provided does not build. --Kevin -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
On 4/26/14, 1:38 PM, Brandon Allbery wrote: It may link successfully but lead to obscure core dumps at runtime, if you're mixing the system ruby headers with a different ruby installation's libraries. I understand that, but I am still not clear on how to pick up the MacPorts headers completely. The invocation Chris provided does not build. --Kevin -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
Hi, You should try looking around in the includes directory a bit …. ruby/config.h exists in /opt/local/include/ruby-2.1.0/x86_64-darwin13 so it looks like you need to add -I/opt/local/include/ruby-2.1.0/x86_64-darwin13 to your compilation command. No idea if this is normal ruby behaviour, as I said I am not a user or ruby. Chris On 26 Apr 2014, at 7:00pm, Christopher Jones jon...@hep.phy.cam.ac.uk wrote: Hi, ( Why do you have -I/opt/local/include/ruby-2.1.0/ twice ? ) Looking at MacBookPro /opt/local/include/ruby-2.1.0 ls ruby ruby.h x86_64-darwin13 I see there is a ruby.h there. This file sets various things then includes ruby/ruby.h I not a user of ruby, so I am guessing here, but what happens if you include #include ruby.h instead, to pick up /opt/local/include/ruby-2.1.0/ruby.h ? Chris On 26 Apr 2014, at 5:59pm, Kevin Walzer k...@codebykevin.com wrote: On 4/26/14, 12:27 PM, Chris Jones wrote: Do you not include any ruby headers in your code ? If you do, you should make sure to pick those matching the library you are using. It might well work without, but that will be just by pure chance.. Just this: #include ruby/ruby.h If I use the -I flag, like so: gcc -Wall -v -o run run.c -L/opt/local/lib -lruby.2.1 -I/opt/local/include/ruby-2.1.0/ -I/opt/local/include/ruby-2.1.0/ then it fails to compile, with this error: #include ... search starts here: /opt/local/include/ruby-2.1.0 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/5.1/include /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks (framework directory) End of search list. In file included from run.c:1: /opt/local/include/ruby-2.1.0/ruby/ruby.h:24:10: fatal error: 'ruby/config.h' file not found #include ruby/config.h ^ Ruby seems to have a convoluted batch of headers; multiple versions of ruby.h are located in the tree for reasons unknown to me. I've seen this error before when trying to compile against MacPorts Ruby and trying to guess at the include path. Any suggestions, especially when the other invocation works as expected? --Kevin -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users smime.p7s Description: S/MIME cryptographic signature ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
On 4/26/14, 2:03 PM, Christopher Jones wrote: You should try looking around in the includes directory a bit …. ruby/config.h exists in /opt/local/include/ruby-2.1.0/x86_64-darwin13 so it looks like you need to add -I/opt/local/include/ruby-2.1.0/x86_64-darwin13 to your compilation command. No idea if this is normal ruby behaviour, as I said I am not a user or ruby. This did the trick: gcc -Wall -v -o run run.c -L/opt/local/lib -lruby.2.1 -I/opt/local/include/ruby-2.1.0/ -I/opt/local/include/ruby-2.1.0/universal-darwin13/ Thanks. -- Kevin Walzer Code by Kevin/Mobile Code by Kevin http://www.codebykevin.com http://www.wtmobilesoftware.com ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
Re: Link against MacPorts Ruby instead of system Ruby
On Apr 26, 2014, at 13:03, Christopher Jones wrote: You should try looking around in the includes directory a bit …. ruby/config.h exists in /opt/local/include/ruby-2.1.0/x86_64-darwin13 so it looks like you need to add -I/opt/local/include/ruby-2.1.0/x86_64-darwin13 to your compilation command. No idea if this is normal ruby behaviour, as I said I am not a user or ruby. You’ll want to let pkg-config find those values for you. On my system, I get: $ pkg-config ruby-2.1 --cflags -I/opt/local/include/ruby-2.1.0/universal-darwin13 -I/opt/local/include/ruby-2.1.0 $ pkg-config ruby-2.1 --libs -L/opt/local/lib -Wl,-undefined,dynamic_lookup -Wl,-multiply_defined,suppress -lruby.2.1.0 -lpthread -ldl -lobjc $ ___ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
