Update libevent under Windows

Author: mtelvers

packages/conf-libevent/conf-libevent.1/opam

@@ -5,10 +5,24 @@ bug-reports: "https://github.com/ocaml/opam-repository/issues"
 authors: "Libevent dev team"
 license: "BSD-3-clause"
 build: [
-  ["pkg-config" "--exists" "libevent"]
+  "pkgconf" {os = "win32" & os-distribution != "cygwinports"}
+  "--personality=i686-w64-mingw32"
+    {os = "win32" & os-distribution != "cygwinports" &
+     host-arch-x86_32:installed}
+  "--personality=x86_64-w64-mingw32"
+    {os = "win32" & os-distribution != "cygwinports" &
+     host-arch-x86_64:installed}
+  "pkg-config" {os != "Win32" | os-distribution != "cygwin"}
+  "libevent"
 ]
 depends: [
   "conf-pkg-config" {build}
+  ("host-arch-x86_32" {os = "win32" & os-distribution != "cygwinports"} &
+   "conf-mingw-w64-libevent-i686"
+     {os = "win32" & os-distribution != "cygwinports"} |
+   "host-arch-x86_64" {os = "win32" & os-distribution != "cygwinports"} &
+   "conf-mingw-w64-libevent-x86_64"
+     {os = "win32" & os-distribution != "cygwinports"})
 ]
 depexts: [
   ["libevent-dev"] {os-family = "debian"}

packages/conf-mingw-w64-libevent-i686/conf-mingw-w64-libevent-i686.1/opam

@@ -0,0 +1,20 @@
+opam-version: "2.0"
+homepage: "https://libevent.org"
+authors: ["Libevent dev team"]
+license: "BSD-3-clause"
+bug-reports: "https://github.com/ocaml/opam-repository/issues"
+flags: conf
+available: os = "win32"
+build: ["pkgconf" "--personality=i686-w64-mingw32" "libevent"]
+depends: [
+  "conf-pkg-config" {build}
+  "conf-mingw-w64-gcc-i686" {build}
+]
+synopsis: "Libevent for i686 mingw-w64"
+description:
+  "Ensure the i686 version of libevent for the mingw-w64 project is available"
+maintainer: "David Allsopp <[email protected]>"
+depexts: [
+  ["mingw64-i686-libevent"] {os = "win32" & os-distribution = "cygwin"}
+  ["mingw-w64-i686-libevent"] {os = "win32" & os-distribution = "msys2"}
+]

packages/conf-mingw-w64-libevent-x86_64/conf-mingw-w64-libevent-x86_64.1/opam

@@ -0,0 +1,21 @@
+opam-version: "2.0"
+homepage: "https://libevent.org"
+authors: ["Libevent dev team"]
+license: "BSD-3-clause"
+bug-reports: "https://github.com/ocaml/opam-repository/issues"
+flags: conf
+available: os = "win32"
+build: ["pkgconf" "--personality=x86_64-w64-mingw32" "libevent"]
+depends: [
+  "conf-pkg-config" {build}
+  "conf-mingw-w64-gcc-x86_64" {build}
+]
+synopsis: "Libevent for x86_64 mingw-w64"
+description:
+  "Ensure the x86_64 version of libevent for the mingw-w64 project is available"
+maintainer: "David Allsopp <[email protected]>"
+depexts: [
+  ["mingw64-x86_64-libevent"] {os = "win32" & os-distribution = "cygwin"}
+  ["mingw-w64-x86_64-libevent"] {os = "win32" & os-distribution = "msys2"}
+]
+