"make: yacc: Command not found" after installing Bison

20
votes

While running a makefile in gcc 4.1.2 (linux 5), I got the following error

make: yacc: Command not found

By googling, I came to know that this error can be rectified by installing Bison-GNU parser generator. But even after installing Bison, I get the same error.

How can this error be solved?

4
bisonyacc
What OS are you under? Sounds like some linux distro, but I'm not sure which. Also, that error is pretty self-explanatory: what happens when you run whereis yacc? – zebediah49
the output of whereis yacc is yacc: /usr/share/man/man1p/yacc.1p.gz – Blackforest
That's a compressed man page, not an executable. – paxdiablo
That means that your $PATH does not include the yacc executable-- that's just its manual page. I'd suggest trying to find where yacc is, and finding why it's not on your $PATH. This is more of a ServerFault or SuperUser question BTW. – zebediah49

4 Answers

35
votes

Run the following command on your terminal to install bison, yacc executables and configurations.yacc comes along with bison

Also you need byacc for a full functional yacc

sudo apt-get install bison -y
sudo apt-get install byacc -y

It worked for me.

14
votes

From the looks of things, your makefile is expecting a yacc executable to be available and either it's not, or it's not on your path.

Since bison is supposed to be compatible with yacc so the first thing I would try would be:

alias yacc="bison"

and try again. On my setup, /usr/bin/yacc is simply a script containing:

#! /bin/sh
exec '/usr/bin/bison' -y "$@"

You can try to locate the yacc or bison executables with the command (substituting bison for yacc if need be):

which yacc

But they're probably in one of the standard places like /bin or /usr/bin.

1
votes

I ran into a similar issue on RHEL7.

Find where bison is:

$:which bison

*/bin/bison*

Create symlink to bison from yacc:

sudo ln -s /bin/bison /bin/yacc

And that should solve the problem.

0
votes

I created the alias file on my Ubuntu 16 system, while testing then I found that bison was missing so I installed bison which gave me an error about the link that I had made for /usr/bin/yacc, so the bison install creates the lnk file itself for yacc on Ubuntu 16.