程序或包 gcjh 在哪里？

Question

I'm having trouble similar to Unable to build pdftk from source on fedora machine , but I'm having it on Ubuntu 13.04.

I've install gcc-gcj , which provides gcj-4.8 .

I opened Makefile.Debian , and modified it as follows. So it finds the proper version of some of the GCC build tools:

export VERSUFF ?=-4.6

Next, I tried to make :

$ VERSUFF="-4.8"; make -f Makefile.Debian     
make -f Makefile -iC /home/jwalton/pdftk-2.02-dist/pdftk/../java all
...
make[1]: Entering directory `/home/jwalton/pdftk-2.02-dist/java'
gcjh-4.8 -force --classpath="/usr/share/java/libgcj-4.8.jar:/home/jwalton/pdftk-2.02-dist/java:."
    pdftk/com/lowagie/text/Anchor
/bin/sh: 1: gcjh-4.8: not found
...
gcjh-4.8 -force --classpath="/usr/share/java/libgcj-4.8.jar:/home/jwalton/pdftk-2.02-dist/java:."
    pdftk/org/bouncycastle/crypto/engines/AESFastEngine
/bin/sh: 1: gcjh-4.8: not found

Though I have installed gcc-gcj , it appears I don't have gcjh :

$ find /usr/bin -name gcjh
$ find /usr/local/bin -name gcjh
$

There is no gcc-java or gcc-gcjh packages:

$ apt-cache pkgnames | grep -i gcc-java
$ apt-cache pkgnames | grep -i gcc-gcjh
$ apt-cache pkgnames | grep -i gcjh
$

What is gcjh , and where can I find it for Ubuntu 13?

Answer 1

使用http://packages.ubuntu.com/进行搜索，我得到http://packages.ubuntu.com/search?searchon=contents&keywords=gcjh&mode=exactfilename&suite=saucy&arch=any建议答案是gcj-jdk 。

Answer 2

For anyone in recent years trying to compile pdftk or otherwise looking for gcj

The pdftk package relied on gcj , which is the GCC compiler for Java . GCJ was officially removed from GCC in September 2016, and by extension, discontinued by the package repositories themselves for the various distros. As a result of this, many notable systems have officially dropped the no-longer-buildable pdftk package itself from their repositories, including Fedora , Ubuntu and Cygwin .

I gave up attempting to build pdftk for my own Cygwin system because of the gcj dependency and because I couldn't trust a tool from developers who insist on using dependencies that have been deprecated for 4 years now. An email exchange here from 2014 - two years before GCJ was finally dropped by GCC - cites the developer of pdftk as saying:

Yes, I've heard that they're dropping support for libgcj. We have been working on a new pdftk that doesn't depend on libgcj, but it is currently pre-beta.

However, it seem nothing came from this "pre-beta", since the last time pdftk had an update at all was in 2013 .

I personally had two options available to me: to install the Windows binary of the pdftk , which would result in an installation separate to the rest of my Cygwin environment, or to use a different but similar tool such as qpdf . Given what I now knew of the last time that pdftk had been updated, I opted to use qpdf and so far haven't been disappointed. The one criticism I have of qpdf is that the website and documentation looks a lot less prettier compared to pdftk s, but the tool itself appears to have all of the same functionality as pdftk .

qpdf is also available and actively maintained on most other major Unix-like systems, including Ubuntu and Fedora .

For anyone who's still desperate to compile pdftk for a Linux distribution, for either workflow or legacy reasons, the above-linked Github thread has some instructions that seem like they still work for a few people.