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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 this adds the following features to AC_CHECK_OCAML_PKG:
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dnl - supports an optional version argument in $3
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dnl - sets OCAML_PKG_PATH_$1 to be the path where the package is
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dnl installed
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AC_DEFUN([AC_CHECK_OCAML_PKG_PATH],
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[dnl
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AC_REQUIRE([AC_PROG_FINDLIB])
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AC_CHECK_OCAML_PKG([$1], [$2])
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unset version_msg
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version_msg=""
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AS_IF([test "x$3" != "x"], [version_msg=" version $3"])
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AC_MSG_CHECKING([for OCaml findlib package $1$version_msg])
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unset path
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unset pkg
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unset version
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pkg=$AS_TR_SH([OCAML_PKG_$1])
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found=no
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if test "x$pkg" != "xno"; then
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path=`$OCAMLFIND query $pkg 2>/dev/null`
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if test "x$3" != "x"; then
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version=`$OCAMLFIND query -format '%v' $pkg 2>/dev/null`
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AC_COMPARE_VERSION_STRINGS([$3], [$version],
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[found=yes],
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[],
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)
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else
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found=yes
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fi
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if test "$found" = "yes" ; then
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AC_MSG_RESULT([$path])
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AS_TR_SH([OCAML_PKG_$1])=$pkg
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AS_TR_SH([OCAML_PKG_PATH_$1])=$path
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fi
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fi
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if test "$found" = "no" ; then
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AC_MSG_RESULT([not found])
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AS_TR_SH([OCAML_PKG_$1])=no
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fi
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AC_SUBST(AS_TR_SH([OCAML_PKG_$1]))
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AC_SUBST(AS_TR_SH([OCAML_PKG_PATH_$1]))
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])
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