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diff --git a/intl/icu/source/i18n/collationfastlatinbuilder.h b/intl/icu/source/i18n/collationfastlatinbuilder.h
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+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+* Copyright (C) 2013-2016, International Business Machines
+* Corporation and others.  All Rights Reserved.
+*******************************************************************************
+* collationfastlatinbuilder.h
+*
+* created on: 2013aug09
+* created by: Markus W. Scherer
+*/
+
+#ifndef __COLLATIONFASTLATINBUILDER_H__
+#define __COLLATIONFASTLATINBUILDER_H__
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_COLLATION
+
+#include "unicode/ucol.h"
+#include "unicode/unistr.h"
+#include "unicode/uobject.h"
+#include "collation.h"
+#include "collationfastlatin.h"
+#include "uvectr64.h"
+
+U_NAMESPACE_BEGIN
+
+struct CollationData;
+
+class U_I18N_API CollationFastLatinBuilder : public UObject {
+public:
+    CollationFastLatinBuilder(UErrorCode &errorCode);
+    ~CollationFastLatinBuilder();
+
+    UBool forData(const CollationData &data, UErrorCode &errorCode);
+
+    const uint16_t *getTable() const {
+        return reinterpret_cast<const uint16_t *>(result.getBuffer());
+    }
+    int32_t lengthOfTable() const { return result.length(); }
+
+private:
+    // space, punct, symbol, currency (not digit)
+    enum { NUM_SPECIAL_GROUPS = UCOL_REORDER_CODE_CURRENCY - UCOL_REORDER_CODE_FIRST + 1 };
+
+    UBool loadGroups(const CollationData &data, UErrorCode &errorCode);
+    UBool inSameGroup(uint32_t p, uint32_t q) const;
+
+    void resetCEs();
+    void getCEs(const CollationData &data, UErrorCode &errorCode);
+    UBool getCEsFromCE32(const CollationData &data, UChar32 c, uint32_t ce32,
+                         UErrorCode &errorCode);
+    UBool getCEsFromContractionCE32(const CollationData &data, uint32_t ce32,
+                                    UErrorCode &errorCode);
+    void addContractionEntry(int32_t x, int64_t cce0, int64_t cce1, UErrorCode &errorCode);
+    void addUniqueCE(int64_t ce, UErrorCode &errorCode);
+    uint32_t getMiniCE(int64_t ce) const;
+    UBool encodeUniqueCEs(UErrorCode &errorCode);
+    UBool encodeCharCEs(UErrorCode &errorCode);
+    UBool encodeContractions(UErrorCode &errorCode);
+    uint32_t encodeTwoCEs(int64_t first, int64_t second) const;
+
+    static UBool isContractionCharCE(int64_t ce) {
+        return (uint32_t)(ce >> 32) == Collation::NO_CE_PRIMARY && ce != Collation::NO_CE;
+    }
+
+    static const uint32_t CONTRACTION_FLAG = 0x80000000;
+
+    // temporary "buffer"
+    int64_t ce0, ce1;
+
+    int64_t charCEs[CollationFastLatin::NUM_FAST_CHARS][2];
+
+    UVector64 contractionCEs;
+    UVector64 uniqueCEs;
+
+    /** One 16-bit mini CE per unique CE. */
+    uint16_t *miniCEs;
+
+    // These are constant for a given root collator.
+    uint32_t lastSpecialPrimaries[NUM_SPECIAL_GROUPS];
+    uint32_t firstDigitPrimary;
+    uint32_t firstLatinPrimary;
+    uint32_t lastLatinPrimary;
+    // This determines the first normal primary weight which is mapped to
+    // a short mini primary. It must be >=firstDigitPrimary.
+    uint32_t firstShortPrimary;
+
+    UBool shortPrimaryOverflow;
+
+    UnicodeString result;
+    int32_t headerLength;
+};
+
+U_NAMESPACE_END
+
+#endif  // !UCONFIG_NO_COLLATION
+#endif  // __COLLATIONFASTLATINBUILDER_H__