I’m trying Opam on windows following these instructions.
I got a switch set up with a compiler successfully built. But when building packages, I’m now stuck on installing conf-cairo. The blog mentions similar-looking issues with depexts but I am just not familiar enough with the ecosystem to make sense of the explanation. Am I doing something dumb? Is there a standard fix for this kind of error?
Log of opam install cairo2:
The following actions will be performed:
=== install 2 packages
∗ cairo2 0.6.4
∗ conf-cairo 1 [required by cairo2]
Proceed with ∗ 2 installations? [y/n] y
<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><> 🐫
⬇ retrieved cairo2.0.6.4 (cached)
#=== ERROR while compiling conf-cairo.1 =======================================#
"pkg-config": command not found.
<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><> 🐫
┌─ The following actions failed
│ λ build conf-cairo 1
└─
╶─ No changes have been performed
List of packages that have been installed so far:
# Packages matching: installed
# Name # Installed # Synopsis
arch-x86_64 1 Build OCaml for amd64 (64-bit)
base-bigarray base
base-domains base
base-nnp base Naked pointers prohibited in the OCaml heap
base-threads base
base-unix base
camlp-streams 5.0.1 The Stream and Genlex libraries for use with Camlp4 and Camlp5
conf-autoconf 0.1 Virtual package relying on autoconf installation
conf-gmp 4 Virtual package relying on a GMP lib system installation
conf-mingw-w64-gcc-x86_64 1 Virtual package for GCC on x86_64 mingw-w64 (64-bit x86_64)
conf-pkg-config 3 Check if pkg-config is installed and create an opam switch local pkgconfig folder
conf-which 1 Virtual package relying on which
csexp 1.5.2 Parsing and printing of S-expressions in Canonical form
dune 3.15.3 Fast, portable, and opinionated build system
dune-configurator 3.15.3 Helper library for gathering system configuration
flexdll 0.43 FlexDLL Sources
host-arch-x86_64 1 OCaml on amd64 (64-bit)
host-system-mingw 1 OCaml for mingw-w64
menhir 20231231 An LR(1) parser generator
menhirCST 20231231 Runtime support library for parsers generated by Menhir
menhirLib 20231231 Runtime support library for parsers generated by Menhir
menhirSdk 20231231 Compile-time library for auxiliary tools related to Menhir
mingw-w64-shims 0.1.0 Configuration for the mingw-w64 Cygwin packages in opam
ocaml 5.2.0 The OCaml compiler (virtual package)
ocaml-base-compiler 5.2.0 Official release 5.2.0
ocaml-config 3 OCaml Switch Configuration
ocaml-env-mingw64 1 GCC mingw-w64 OCaml Runtime Dependency (64-bit)
ocaml-options-vanilla 1 Ensure that OCaml is compiled with no special options enabled
ocamlfind 1.9.5 A library manager for OCaml
system-mingw 1 Build OCaml for mingw-w64