Thanks Ricardo for your answer. Sorry if my message was not clear, I don't have the env variable C_INCLUDE_PATH in my guix system and I should have it because I have the packages "gcc-toolchain" and "linux-libre-headers" in my home profile. When I run a instance of guix shell with these 2 packages, for example with the command "guix shell gcc-toolchain linux-libre-headers" I do have this env variable defined (in fact a guix shell with only gcc-toolchain works also) so I don't know why I don't have this variable defined in my system.
------- Original Message ------- Le dimanche 23 octobre 2022 à 11:48 PM, Ricardo Wurmus <rek...@elephly.net> a écrit : > Mohamed Amine LEGHERABA via help-guix@gnu.org writes: > > > When I do "echo $C_INCLUDE_PATH" in my bash prompt (either my account or > > root), I have nothing. > > > > When I run a custom guix shell (with gcc-toolchain) and I run "echo > > $C_INCLUDE_PATH", > > I have "/gnu/store/1p21dbv408cb45zcc15v7wj0q7x99rz2-profile/include" > > > > Without this env variable, C programs can't use "linux/limits.h" or > > other kernel related libraries. Any idea how to solve this problem ? > > > You say that “guix shell” sets the variable as expected. Its value > depends on the packages you add to the “guix shell” invocation. > > You can also augment it manually to add whatever include directories you > need. > > -- > Ricardo
