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