I’ve started getting involved with a particular bug report on the Eclipse project, Bug #57897. I found it as a result of searching via Google for information related to the problems I have had trying to perform the build from source for Eclipse. According to the documentation, building on PowerPC Linux with GTK libraries is supposed to be supported. As the following clip from Comment #31 of the bug report shows, I am having no success:

Using the 32-bit PowerPC Linux 1.4.2 JDK from IBM, I have reliably received
build failures every time on the following Eclipse SDK builds from source, with
the source included in the downloaded .zip archive:

Eclipse 3.01 release
Eclipse 3.1M2
Eclipse 3.1 Integration Build 20041013

The execution command is as follows:
# ./build -os linux -ws gtk -arch ppc -target run

The error message is:
BUILD FAILED
/home/barryh/eclipse_I20041013/build.xml:40: taskdef class
org.eclipse.pde.internal.build.tasks.IdReplaceTask cannot be found

Every time it is related to the IdReplaceTask in line 40 of the root build.xml
file, which is a taskdef that reads:

We’ll see where this goes…