“Launch Configuration” Shows up Blank When Trying to Export Runnable Jar?

Launch configurations are presumably used because they describe the main class you want to run, and the libraries the main class needs. They are created automatically when you run your main class inside Eclipse. In the Package Explorer panel, right-click on the class you want to have main(…) executed in and choose Run as -> … Read more

How do you dynamically compile and load external java classes? [duplicate]

Take a look at JavaCompiler The following is based on the example given in the JavaDocs This will save a File in the testcompile directory (based on the package name requirements) and the compile the File to a Java class… package inlinecompiler; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.io.Writer; import java.net.URL; import java.net.URLClassLoader; import … Read more

What does the compile-time error “Undefined symbols for architecture x86_64” mean?

When you compile the file, the compiler invokes the linker which tries to generate an executable. But it cannot because you didn’t provide a function named main which is the function that will be executed when your program is launched. Either you don’t want to run the linker because you want to compile several files … Read more

Elegantly call C++ from C

EDIT: Based on discussion in the comment, I should point out that separating things into a C-compatible struct duck and a derived class Duck is probably unnecessary. You can probably safely shovel the implementation into struct duck and eliminate class Duck, thus obviating real(…). But I don’t know C++ well enough (in particular, the way … Read more

The POM for project is missing, no dependency information available

Change: <!– ANT4X –> <dependency> <groupId>net.sourceforge</groupId> <artifactId>ant4x</artifactId> <version>${net.sourceforge.ant4x-version}</version> <scope>provided</scope> </dependency> To: <!– ANT4X –> <dependency> <groupId>net.sourceforge.ant4x</groupId> <artifactId>ant4x</artifactId> <version>${net.sourceforge.ant4x-version}</version> <scope>provided</scope> </dependency> The groupId of net.sourceforge was incorrect. The correct value is net.sourceforge.ant4x.

Compile the Python interpreter statically?

I found this (mainly concerning static compilation of Python modules): http://bytes.com/groups/python/23235-build-static-python-executable-linux Which describes a file used for configuration located here: <Python_Source>/Modules/Setup If this file isn’t present, it can be created by copying: <Python_Source>/Modules/Setup.dist The Setup file has tons of documentation in it and the README included with the source offers lots of good compilation information … Read more

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