nixpkgs/pkgs/development/ocaml-modules/mirage-xen/makefile-no-opam.patch
sternenseemann 980a2bed3b ocamlPackages.mirage-xen: init at 6.0.0
Unfortunately this requires a bit of trickery with pkg-config to get to
work. The root issue is that the mirage-xen assumes that we use the
default libdir of dune ($out/lib) whereas we install to an OCaml
version-specific site-lib directory. Thus the manually created
pkg-config file makes wrong assumptions (which warrants a patch) and the
.pc file is installed to the wrong location (which is fixed with a mv
invocation).
2021-04-25 13:13:23 +02:00

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Diff

diff --git a/lib/bindings/Makefile b/lib/bindings/Makefile
index 4e413c0..67c7bdc 100644
--- a/lib/bindings/Makefile
+++ b/lib/bindings/Makefile
@@ -1,4 +1,6 @@
-PKG_CONFIG_PATH := $(shell opam config var prefix)/lib/pkgconfig
+ifneq (, $(shell command -v opam))
+ PKG_CONFIG_PATH ?= $(shell opam config var prefix)/lib/pkgconfig
+endif
CC ?= cc
FREESTANDING_CFLAGS := $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) pkg-config --cflags ocaml-freestanding)