Make pinning the git repository work

why3-coq.opam/files/run_autoconf_if_needed.sh

+#!/bin/sh -eux
+
+if [ ! -f "configure" ]; then
+  autoconf
+  automake --add-missing || true
+fi

why3-coq.opam/opam

@@ -24,6 +24,9 @@ tags: [
 available: [ ocaml-version >= "4.02.3" ]
 
 build: [
+  ["sh" "-eux" "./run_autoconf_if_needed.sh"] # when used in pinned mode,
+                                              # the configure *cannot* yet be
+                                              # generated
   ["./configure"
    "--prefix" prefix
    "--disable-why3-lib"

why3-ide.opam/files/run_autoconf_if_needed.sh

+#!/bin/sh -eux
+
+if [ ! -f "configure" ]; then
+  autoconf
+  automake --add-missing || true
+fi

why3-ide.opam/opam

@@ -24,6 +24,9 @@ tags: [
 available: [ ocaml-version >= "4.02.3" ]
 
 build: [
+  ["sh" "-eux" "./run_autoconf_if_needed.sh"] # when used in pinned mode,
+                                              # the configure *cannot* yet be
+                                              # generated
   ["./configure"
    "--prefix" prefix
    "--disable-why3-lib"

why3.opam/files/run_autoconf_if_needed.sh

+#!/bin/sh -eux
+
+if [ ! -f "configure" ]; then
+  autoconf
+  automake --add-missing || true
+fi

why3.opam/opam

@@ -24,6 +24,9 @@ tags: [
 available: [ ocaml-version >= "4.02.3" ]
 
 build: [
+  ["sh" "-eux" "./run_autoconf_if_needed.sh"] # when used in pinned mode,
+                                              # the configure *cannot* yet be
+                                              # generated
   ["./configure"
    "--prefix" prefix
    "--disable-frama-c"