Improve OCaml installation

ocaml/trexio/Makefile

@@ -6,4 +6,7 @@ lib/trexio.ml: ../../trex.json read_json.py src/trexio.ml src/trexio.mli src/tre
 
 sources: lib/trexio.ml
 
+clean:
+	dune clean
+
 .PHONY: sources default

ocaml/trexio/compile-lib.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 PREFIX=$1
+TASK=$2
 PKGCONFIG_COMMAND="pkg-config --libs --cflags trexio"
 
 INSTALLED="no"
@@ -16,10 +17,15 @@ if eval $PKGCONFIG_COMMAND >/dev/null 2>&1; then
 fi
 
 # Compile C library
-cd vendor
-tar -zxf trexio-*.tar.gz
-cd trexio-*
-./configure --prefix=${PREFIX}
-$(MAKE) install && \
-rm -rf trexio-*/
-
+set -e
+if test "$TASK" = "build" ; then
+  tar -zxf trexio-*.tar.gz
+  cd trexio-*
+  ./configure --prefix=${PREFIX}
+  make -j 4
+  cd ../
+elif test "$TASK" = "install" ; then
+  cd trexio-*
+  make install
+  rm -rf trexio-*/
+fi

ocaml/trexio/trexio.opam

@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "2.3.0"
+version: "2.3.2"
 synopsis: "Binding for the TREXIO Input/Output library"
 description:
   "TREXIO is a file format and library for storing wave functions and integrals for quantum chemistry."
@@ -20,9 +20,15 @@ depends: [
   "conf-pkg-config" {build}
   "odoc" {with-doc}
 ]
+depexts: [
+  ["hdf5"] {os-distribution = "alpine"}
+  ["epel-release" "hdf5-devel"] {os-distribution = "centos"}
+  ["libhdf5-dev"] {os-distribution = "debian"}
+  ["hdf5"] {os-distribution = "homebrew"}
+  ["libhdf5-dev"] {os-distribution = "ubuntu"}
+]
 build: [
   ["dune" "subst"] {dev}
-  ["./compile-lib.sh" "%{prefix}%" "build"]
   [
     "dune"
     "build"
@@ -35,8 +41,4 @@ build: [
     "@doc" {with-doc}
   ]
 ]
-install: [
- ["./compile-lib.sh" "%{prefix}%" "install"]
- ["dune" "install"]
-]
 dev-repo: "git+https://github.com/trex-coe/trexio_ocaml.git"