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infer_clone/m4/ac_assert_ocaml_pkg.m4

44 lines
1.1 KiB

dnl Copyright (c) 2015-present, Facebook, Inc.
dnl
dnl This source code is licensed under the MIT license found in the
dnl LICENSE file in the root directory of this source tree.
dnl AC_ASSERT_OCAML_PKG([pkg_name], [pkg_version])
dnl
dnl fails if $pkg_name is not installed; also fails if it is not
dnl installed at version $pkg_version if specified
dnl
dnl assumes that AC_PROG_FINDLIB has been called
AC_DEFUN([AC_ASSERT_OCAML_PKG],
[dnl
AC_CHECK_OCAML_PKG_PATH([$1], [$2], [$3])
unset has_pkg
unset pkg
unset version
AS_IF([test "$OCAMLFIND" = "no"], [dnl
# trick to detect if ocamlfind is correctly installed and give the
# right opam instructions to install it if not since they're the
# same as when any other opam package is missing.
has_pkg=no
pkg=ocamlfind
version=
], [dnl
has_pkg=$AS_TR_SH[OCAML_PKG_$1]
pkg=$1
version=
AS_IF([test "x$3" != "x"], [dnl
version=" version $3"
])
])
AS_IF([test "$has_pkg" = "no"], [dnl
AC_MSG_ERROR([missing OCaml dependency: $pkg$version
If you are using opam, please run
opam update
opam install --deps-only infer .])
])
])