error while installing mesa in command 'make linux-x86'

Question

nir@nir:~/Downloads/mesa-8.0$ make linux-x86
make default
make[1]: Entering directory `/home/nir/Downloads/mesa-8.0'
make[2]: Entering directory `/home/nir/Downloads/mesa-8.0/src'
Making sources for linux-x86
make[3]: Entering directory `/home/nir/Downloads/mesa-8.0/src/glsl'
flex --nounistd -oglcpp/glcpp-lex.c  glcpp/glcpp-lex.l
make[3]: flex: Command not found
make[3]: *** התיינבל םיללכ ןיא ךא ,`depend' תשרוד `default' הרטמ.  Stop. **//trnaslaet from hebrew: target 'default' Requires `depend' But there are no rules for building. Stop.**
make[3]: Leaving directory `/home/nir/Downloads/mesa-8.0/src/glsl'
make[2]: *** [subdirs] 1 הלקת **//trnaslaet from hebrew: fault**
make[2]: Leaving directory `/home/nir/Downloads/mesa-8.0/src'
make[1]: *** [default] 1 הלקת **//trnaslaet from hebrew: fault**
make[1]: Leaving directory `/home/nir/Downloads/mesa-8.0'
make: *** [linux-x86] 2 הלקת **//trnaslaet from hebrew: fault**
nir@nir:~/Downloads/mesa-8.0$ 

Is there any solution? Thanks!

Answer 1

The error is pretty obvious:

make[3]: flex: Command not found

Mesa has a build-dependency on flex which can be installed with:

sudo apt-get install flex

To install all build dependencies for Mesa at once, run:

sudo apt-get build-dep mesa