如何让 ruby-svm 在 macports 中查找库？ /选择/本地？

发布于 2024-08-19 22:19:51 字数 1116 浏览 3 评论 0原文

我想安装 Ruby SVM。我已经有了正常设置的 macports，并通过端口安装了 libsvm 就好了。但是当我去编译 rubysvm 时，它就崩溃了。 :(

Ruby SVM：http://rubysvm.cilibrar.com/download/（大多数链接是404虽然） libsvm: http://www.csie.ntu.edu.tw/~cjlin /libsvm/

试试这个：

sudo port install libsvm
wget http://debian.cilibrar.com/debian/pool/main/libs/libsvm-ruby/libsvm-ruby_2.8.4.orig.tar.gz
tar -xzf libsvm-ruby_2.8.4.orig.tar.gz
cd libsvm-ruby-2.8.4
./configure

... 然后你会得到错误：

...
checking libsvm/svm.h usability... no
checking libsvm/svm.h presence... no
checking for libsvm/svm.h... no
Error, cannot find LIBSVM svm.h header.

我已经尝试过这个，但没有成功：

export DYLD_LIBRARY_PATH=/opt/local/include/:/opt/local/lib/
(... ditto for C_INCLUDE_PATH, LD_LIBRARY_PATH, CPATH, & LIBRARY_PATH)
LDFLAGS="-I/opt/local/include -L/opt/local/lib" CPPFLAGS="-I/opt/local/include -L/opt/local/lib" ./configure

如何解决这个问题？

原文

I want to install Ruby SVM. I already have macports with normal settings, and installed libsvm via port just fine. But when I go to compile rubysvm, it barfs. :(

Ruby SVM: http://rubysvm.cilibrar.com/download/ (most links are 404 though)
libsvm: http://www.csie.ntu.edu.tw/~cjlin/libsvm/

Try this:

sudo port install libsvm
wget http://debian.cilibrar.com/debian/pool/main/libs/libsvm-ruby/libsvm-ruby_2.8.4.orig.tar.gz
tar -xzf libsvm-ruby_2.8.4.orig.tar.gz
cd libsvm-ruby-2.8.4
./configure

... and you get the error:

...
checking libsvm/svm.h usability... no
checking libsvm/svm.h presence... no
checking for libsvm/svm.h... no
Error, cannot find LIBSVM svm.h header.

I've tried this, without success:

export DYLD_LIBRARY_PATH=/opt/local/include/:/opt/local/lib/
(... ditto for C_INCLUDE_PATH, LD_LIBRARY_PATH, CPATH, & LIBRARY_PATH)
LDFLAGS="-I/opt/local/include -L/opt/local/lib" CPPFLAGS="-I/opt/local/include -L/opt/local/lib" ./configure

How do I fix this?

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千纸鹤带着心事 2024-08-26 22:19:51

libsvm-ruby 假定 libsvm 将其标头安装在 PREFIX/include/libsvm/svm.h 中，但 macports 包将其放在 /opt/local/include 中。

这是一个拼凑，但最简单的解决方法是手动创建目录 /opt/local/include/libsvm 并将 svm.h 标头移动/复制到那里。您可能仍然需要使用 LDFLAGS 和 CPPFLAGS 设置运行配置命令，因为 macports 安装看起来不会更新 pkg-config（libsvm-ruby 使用它来尝试查找编译器标志）。

我会将其作为包错误报告给 macports 维护者。如果您了解 macport 的端口文件，您甚至可以提供补丁。

更新：我还没有真正尝试过这个，所以一旦你通过了头文件检测，可能还会出现其他问题。

更新 2：我能够通过配置：

sudo mkdir /opt/local/include/libsvm
sudo cp /opt/local/include/svm /opt/local/include/libsvm/
CPPFLAGS=-I/opt/local/include LIBS=-L/opt/local/lib ./configure

但 libsvm-ruby 似乎依赖于 obstack.h，它在 OS X 上本机不存在。基于这个，可能有一种方法可以复制您需要的文件，但您需要修补 libsvm-ruby main.cpp和 Makefile 来链接它。

祝你好运！

libsvm-ruby assumes libsvm installs its header in PREFIX/include/libsvm/svm.h, but the macports package puts it in /opt/local/include.

It's a kludge, but the easiest fix is to manually make the directory /opt/local/include/libsvm and move/copy the svm.h header there. You may still need to run your configure command with the LDFLAGS and CPPFLAGS settings since it looks like the macports install doesn't update pkg-config (which libsvm-ruby uses to try to find the compiler flags).

I'd report this as a package bug to the macports maintainer. If you understand macport's Portfiles, you can probably even provide a patch.

Update: I haven't actually tried this, so there may be other issues once you get past the header file detection.

Update 2: I was able to get past configure with:

sudo mkdir /opt/local/include/libsvm
sudo cp /opt/local/include/svm /opt/local/include/libsvm/
CPPFLAGS=-I/opt/local/include LIBS=-L/opt/local/lib ./configure

But libsvm-ruby appears to depend on obstack.h, which doesn't exist natively on OS X. Based on this, there might be a way to copy in the files that you need, but you'll need to patch the libsvm-ruby main.cpp and Makefile to link that in.

Good luck!

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