[ci] [docker] Update to 4.09.1

That release includes non trivial changes related C compilers, in
particular due to `-fno-common` support.

7 files changed, 13 insertions, 9 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5aa0fee16f..00ccc9f137 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,7 +18,7 @@ stages:
 variables:
   # Format: $IMAGE-V$DATE [Cache is not used as of today but kept here
   # for reference]
-  CACHEKEY: "bionic_coq-V2019-03-14-V14"
+  CACHEKEY: "bionic_coq-V2019-03-18-V93"
   IMAGE: "$CI_REGISTRY_IMAGE:$CACHEKEY"
   # By default, jobs run in the base switch; override to select another switch
   OPAM_SWITCH: "base"
diff --git a/INSTALL.md b/INSTALL.md
index a55e1e9ac2..0c98a611a5 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -7,7 +7,7 @@ Build Requirements
 To compile Coq yourself, you need:
 
 - [OCaml](https://ocaml.org/) (version >= 4.05.0)
-  (This version of Coq has been tested up to OCaml 4.09.0)
+  (This version of Coq has been tested up to OCaml 4.09.1)
 
 - The [num](https://github.com/ocaml/num) library; note that it is
   included in the OCaml distribution for OCaml versions < 4.06.0
@@ -45,7 +45,7 @@ CoqIDE with:
 Opam (https://opam.ocaml.org/) is recommended to install OCaml and
 the corresponding packages.
 
-    $ opam switch create coq 4.09.0+flambda
+    $ opam switch create coq 4.09.1+flambda
     $ eval $(opam env)
     $ opam install num ocamlfind lablgtk3-sourceview3
 
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 98e17e8fe8..aae2c3cb42 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -72,7 +72,7 @@ jobs:
       opam list
     displayName: 'Install OCaml dependencies'
     env:
-      COMPILER: "4.09.0"
+      COMPILER: "4.09.1"
       FINDLIB_VER: ".1.8.1"
       OPAMYES: "true"
 
diff --git a/dev/ci/azure-opam.sh b/dev/ci/azure-opam.sh
index ee6c62673b..7b3e2703b8 100755
--- a/dev/ci/azure-opam.sh
+++ b/dev/ci/azure-opam.sh
@@ -2,7 +2,7 @@
 
 set -e -x
 
-OPAM_VARIANT=ocaml-variants.4.09.0+mingw64c
+OPAM_VARIANT=ocaml-variants.4.09.1+mingw64c
 
 wget https://github.com/fdopen/opam-repository-mingw/releases/download/0.0.0.2/opam64.tar.xz -O opam64.tar.xz
 tar -xf opam64.tar.xz
diff --git a/dev/ci/docker/bionic_coq/Dockerfile b/dev/ci/docker/bionic_coq/Dockerfile
index 979b5917d4..4e229bb777 100644
--- a/dev/ci/docker/bionic_coq/Dockerfile
+++ b/dev/ci/docker/bionic_coq/Dockerfile
@@ -1,4 +1,4 @@
-# CACHEKEY: "bionic_coq-V2019-03-14-V14"
+# CACHEKEY: "bionic_coq-V2019-03-18-V93"
 # ^^ Update when modifying this file.
 
 FROM ubuntu:bionic
@@ -56,7 +56,7 @@ RUN opam switch create "${COMPILER}+32bit" && eval $(opam env) && \
     opam install $BASE_OPAM
 
 # EDGE switch
-ENV COMPILER_EDGE="4.09.0" \
+ENV COMPILER_EDGE="4.09.1" \
     BASE_OPAM_EDGE="dune-release.1.3.3 ocamlformat.0.12"
 
 # EDGE+flambda switch, we install CI_OPAM as to be able to use
diff --git a/dev/dune-workspace.all b/dev/dune-workspace.all
index 49e338d0a5..556493ffad 100644
--- a/dev/dune-workspace.all
+++ b/dev/dune-workspace.all
@@ -3,5 +3,5 @@
 ; Add custom flags here. Default developer profile is `dev`
 (context (opam (switch 4.05.0)))
 (context (opam (switch 4.05.0+32bit)))
-(context (opam (switch 4.09.0)))
-(context (opam (switch 4.09.0+flambda)))
+(context (opam (switch 4.09.1)))
+(context (opam (switch 4.09.1+flambda)))
diff --git a/doc/changelog/11-infrastructure-and-dependencies/11860-ci+ocaml_to_4091.rst b/doc/changelog/11-infrastructure-and-dependencies/11860-ci+ocaml_to_4091.rst
new file mode 100644
index 0000000000..94e2c34828
--- /dev/null
+++ b/doc/changelog/11-infrastructure-and-dependencies/11860-ci+ocaml_to_4091.rst
@@ -0,0 +1,4 @@
+- **Added:**
+  Bump official OCaml support to 4.09.1
+  (`#11860 <https://github.com/coq/coq/pull/11860>`_,
+  by Emilio Jesus Gallego Arias).