I previously installed OCaml 4.02.3 with opam.
I get this message error when I do "opam install gsl":
The following actions will be performed:
∗ install conf-ncurses 1 [required by ocamlfind]
∗ install conf-gsl 1 [required by gsl]
∗ install ocamlfind 1.6.1 [required by gsl]
∗ install gsl 1.19.1
===== ∗ 4 =====
Do you want to continue ? [Y/n] y
=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[gsl] Archive in cache
[ocamlfind] Archive in cache
=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[ERROR] The compilation of conf-gsl failed at "pkg-config gsl".
[ERROR] The compilation of conf-ncurses failed at "pkg-config ncurses".
#=== ERROR while installing conf-gsl.1 ========================================#
# opam-version 1.2.2
# os linux
# command pkg-config gsl
# path /home/jmazel/.opam/4.02.3/build/conf-gsl.1
# compiler 4.02.3
# exit-code 127
# env-file /home/jmazel/.opam/4.02.3/build/conf-gsl.1/conf-gsl-10926-5f1023.env
# stdout-file /home/jmazel/.opam/4.02.3/build/conf-gsl.1/conf-gsl-10926-5f1023.out
# stderr-file /home/jmazel/.opam/4.02.3/build/conf-gsl.1/conf-gsl-10926-5f1023.err
#=== ERROR while installing conf-ncurses.1 ====================================#
# opam-version 1.2.2
# os linux
# command pkg-config ncurses
# path /home/jmazel/.opam/4.02.3/build/conf-ncurses.1
# compiler 4.02.3
# exit-code 127
# env-file /home/jmazel/.opam/4.02.3/build/conf-ncurses.1/conf-ncurses-10926-58c514.env
# stdout-file /home/jmazel/.opam/4.02.3/build/conf-ncurses.1/conf-ncurses-10926-58c514.out
# stderr-file /home/jmazel/.opam/4.02.3/build/conf-ncurses.1/conf-ncurses-10926-58c514.err
### stdout ###
=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions were aborted
∗ install gsl 1.19.1
∗ install ocamlfind 1.6.1
The following actions failed
∗ install conf-gsl 1
∗ install conf-ncurses 1
No changes have been performed
=-=- conf-gsl.1 troobleshooting -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
=> This package relies on external (system) dependencies that may be missing. `opam depext conf-gsl.1' may help you find the correct installation for
your system.
=-=- conf-ncurses.1 troobleshooting -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
=> This package relies on external (system) dependencies that may be missing. `opam depext conf-ncurses.1' may help you find the correct installation
for your system.
opam depext conf-gsl.1 yields:
# Detecting depexts using flags: x86_64 linux debian
# The following system packages are needed:
# - libgsl0-dev
Not running as root, the following command will be run through "sudo":
apt-get install -qq -yy libgsl0-dev
# OS packages installation successful
opam depext conf-ncurses.1 yields:
# Detecting depexts using flags: x86_64 linux debian
# The following system packages are needed:
# - ncurses-dev
Not running as root, the following command will be run through "sudo":
apt-get install -qq -yy ncurses-dev
# OS packages installation successful
If I rerun "opam install gsl", I get the same output as above.