Use gumtree on C files -- cannot run 'cgum' about gumtree HOT 7 CLOSED

Okay, looks like cgum is the tool found in gumtreediff/cgum. Unfortunately, I couldn't compile that repository to get the cgum binary. I have opened an issue there regarding that. Once I have that binary, to avoid the above error is it sufficient to include the cgum executable in my path?

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Yes you are right!

I believe this should go to the Wiki :)

In which section do you think it would be appropriate?

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On Fri, 19 Aug 2016, Jean-Rémy Falleri wrote:

Yes you are right!

I believe this should go to the Wiki :)

In which section do you think it would be appropriate?

I'm lost. There is a comment in saheel1115's mail about "Unfortunately,
I couldn't compile that repository to get the cgum binary. I have opened
an issue there regarding that." But I don't know how to find the issue
that he opened.

julia

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I believe this is this one : GumTreeDiff/cgum#1

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I was able to install Cgum and successfully parse/diff C files. Thanks!

In which section do you think it would be appropriate?

The Installation section in Getting Started mentions that Gradle is used to manage dependencies. Ideally, Gradle should deal with Cgum internally. If that cannot be done or is a time-consuming task, at the very least we can add a line in the Installation section saying Gumtree/Cgum is a dependency (and that the binary should be in the path) if you want to diff C files.

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I have updated the installation section of the wiki!

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I have added "cgum" to the system path, however, I am still getting the same error. Can someone help me to resolve the error?
java.io.IOException: Cannot run program "cgum" (in directory "/tmp"): error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at com.github.gumtreediff.gen.c.CTreeGenerator.generate(CTreeGenerator.java:73)
at com.github.gumtreediff.gen.TreeGenerator.generateFromReader(TreeGenerator.java:37)
at com.github.gumtreediff.gen.TreeGenerator.generateFromFile(TreeGenerator.java:43)
at com.github.gumtreediff.gen.Generators.getTree(Generators.java:43)
at com.github.gumtreediff.client.diff.AbstractDiffClient.getTreeContext(AbstractDiffClient.java:128)
at com.github.gumtreediff.client.diff.AbstractDiffClient.getSrcTreeContext(AbstractDiffClient.java:114)
at com.github.gumtreediff.client.diff.AbstractDiffClient.matchTrees(AbstractDiffClient.java:105)
at com.github.gumtreediff.client.diff.TextDiff.run(TextDiff.java:98)
at com.github.gumtreediff.client.Run.startClient(Run.java:80)
at com.github.gumtreediff.client.Run.main(Run.java:108)
Caused by: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.(UNIXProcess.java:247)
at java.lang.ProcessImpl.start(ProcessImpl.java:134)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 10 more
** Error while running client diff: java.lang.NullPointerException

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