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I was following instructions here https://github.com/cs50/spl

  • apt-get install -y build-essential git openjdk-7-jdk
  • git clone [email protected]:cs50/spl.git
  • cd spl
  • make
  • sudo make install

make

gcc -o build/tests/TestStanfordCSLib build/obj/TestStanfordCSLib.o -    Lbuild/lib -lcs -lm
javac -d build/classes -classpath java/lib/acm.jar -sourcepath java/src \
java/src/stanford/spl/JavaBackEnd.java
jar cf build/lib/spl.jar . . .

sudo make install

javac -d build/classes -classpath java/lib/acm.jar -sourcepath java/src \
java/src/stanford/spl/JavaBackEnd.java
/bin/bash: jar: command not found
Makefile:308: recipe for target 'spl.jar' failed
make: *** [spl.jar] Error 127

Does someone know how to fix it?

Any advice will be helpful ;)

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  • Interesting! So apparently the jar command worked in the make step, but not in the make install step? What happens when you run which jar?
    – kzidane
    Commented Mar 6, 2017 at 20:49
  • /usr/local/java/jdk1.8.0_121/bin/jar @Kareem
    – wingedRuslan
    Commented Mar 7, 2017 at 22:36
  • Hm, not really sure what's wrong! I could take a closer look via Team Viewer. Just have it installed, and email me your Team Viewer ID and password, if you'd like to!
    – kzidane
    Commented Mar 7, 2017 at 22:42

1 Answer 1

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Just for reference, the problem was that the OP installed Oracle's JDK manually, and the directories containing the JDK's programs were not on root's PATH. That's why sudo make install failed, when it was trying to use jar.

There's more than one solution to this problem, including putting these directories on root's PATH, or softlinking the program's to somewhere on PATH already, or simply installing openjdk using

sudo apt-get install openjdk-7-jdk

per SPL's readme!

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