Check in the pristine copy of ICU 4.6...

icu46/source/tools/pkgdata/pkgdata.cpp

+/******************************************************************************
+ *   Copyright (C) 2000-2010, International Business Machines
+ *   Corporation and others.  All Rights Reserved.
+ *******************************************************************************
+ *   file name:  pkgdata.c
+ *   encoding:   ANSI X3.4 (1968)
+ *   tab size:   8 (not used)
+ *   indentation:4
+ *
+ *   created on: 2000may15
+ *   created by: Steven \u24C7 Loomis
+ *
+ *   This program packages the ICU data into different forms
+ *   (DLL, common data, etc.)
+ */
+
+/*
+ * We define _XOPEN_SOURCE so that we can get popen and pclose.
+ */
+#if !defined(_XOPEN_SOURCE)
+#if __STDC_VERSION__ >= 199901L
+/* It is invalid to compile an XPG3, XPG4, XPG4v2 or XPG5 application using c99 on Solaris */
+#define _XOPEN_SOURCE 600
+#else
+#define _XOPEN_SOURCE 4
+#endif
+#endif
+
+
+#include "unicode/utypes.h"
+
+#if U_HAVE_POPEN
+#if defined(U_CYGWIN) && defined(__STRICT_ANSI__)
+/* popen/pclose aren't defined in strict ANSI on Cygwin */
+#undef __STRICT_ANSI__
+#endif
+#endif
+
+#include "unicode/putil.h"
+#include "cmemory.h"
+#include "cstring.h"
+#include "filestrm.h"
+#include "toolutil.h"
+#include "unicode/uclean.h"
+#include "unewdata.h"
+#include "uoptions.h"
+#include "putilimp.h"
+#include "package.h"
+#include "pkg_icu.h"
+#include "pkg_genc.h"
+#include "pkg_gencmn.h"
+#include "flagparser.h"
+#include "filetools.h"
+
+
+#if U_HAVE_POPEN
+# include <unistd.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+
+U_CDECL_BEGIN
+#include "pkgtypes.h"
+U_CDECL_END
+
+#ifdef U_WINDOWS
+#ifdef __GNUC__
+#define WINDOWS_WITH_GNUC
+#else
+#define WINDOWS_WITH_MSVC
+#endif
+#endif
+#if !defined(WINDOWS_WITH_MSVC) && !defined(U_LINUX)
+#define BUILD_DATA_WITHOUT_ASSEMBLY
+#endif
+#if defined(WINDOWS_WITH_MSVC) || defined(U_LINUX)
+#define CAN_WRITE_OBJ_CODE
+#endif
+#if defined(U_CYGWIN) || defined(CYGWINMSVC)
+#define USING_CYGWIN
+#endif
+
+/*
+ * When building the data library without assembly,
+ * some platforms use a single c code file for all of
+ * the data to generate the final data library. This can
+ * increase the performance of the pkdata tool.
+ */
+#if defined(OS400)
+#define USE_SINGLE_CCODE_FILE
+#endif
+
+/* Need to fix the file seperator character when using MinGW. */
+#if defined(WINDOWS_WITH_GNUC) || defined(USING_CYGWIN)
+#define PKGDATA_FILE_SEP_STRING "/"
+#else
+#define PKGDATA_FILE_SEP_STRING U_FILE_SEP_STRING
+#endif
+
+#define LARGE_BUFFER_MAX_SIZE 2048
+#define SMALL_BUFFER_MAX_SIZE 512
+
+static void loadLists(UPKGOptions *o, UErrorCode *status);
+
+static int32_t pkg_executeOptions(UPKGOptions *o);
+
+#ifdef WINDOWS_WITH_MSVC
+static int32_t pkg_createWindowsDLL(const char mode, const char *gencFilePath, UPKGOptions *o);
+#endif
+static int32_t pkg_createSymLinks(const char *targetDir, UBool specialHandling=FALSE);
+static int32_t pkg_installLibrary(const char *installDir, const char *dir);
+static int32_t pkg_installFileMode(const char *installDir, const char *srcDir, const char *fileListName);
+static int32_t pkg_installCommonMode(const char *installDir, const char *fileName);
+
+#ifdef BUILD_DATA_WITHOUT_ASSEMBLY
+static int32_t pkg_createWithoutAssemblyCode(UPKGOptions *o, const char *targetDir, const char mode);
+#endif
+
+static int32_t pkg_createWithAssemblyCode(const char *targetDir, const char mode, const char *gencFilePath);
+static int32_t pkg_generateLibraryFile(const char *targetDir, const char mode, const char *objectFile, char *command = NULL);
+static int32_t pkg_archiveLibrary(const char *targetDir, const char *version, UBool reverseExt);
+static void createFileNames(UPKGOptions *o, const char mode, const char *version_major, const char *version, const char *libName, const UBool reverseExt);
+static int32_t initializePkgDataFlags(UPKGOptions *o);
+
+static int32_t pkg_getOptionsFromICUConfig(UBool verbose, UOption *option);
+static int runCommand(const char* command, UBool specialHandling=FALSE);
+
+enum {
+    NAME,
+    BLDOPT,
+    MODE,
+    HELP,
+    HELP_QUESTION_MARK,
+    VERBOSE,
+    COPYRIGHT,
+    COMMENT,
+    DESTDIR,
+    REBUILD,
+    TEMPDIR,
+    INSTALL,
+    SOURCEDIR,
+    ENTRYPOINT,
+    REVISION,
+    FORCE_PREFIX,
+    LIBNAME,
+    QUIET
+};
+
+/* This sets the modes that are available */
+static struct {
+    const char *name, *alt_name;
+    const char *desc;
+} modes[] = {
+        { "files", 0,           "Uses raw data files (no effect). Installation copies all files to the target location." },
+#ifdef U_WINDOWS
+        { "dll",    "library",  "Generates one common data file and one shared library, <package>.dll"},
+        { "common", "archive",  "Generates just the common file, <package>.dat"},
+        { "static", "static",   "Generates one statically linked library, " LIB_PREFIX "<package>" UDATA_LIB_SUFFIX }
+#else
+#ifdef UDATA_SO_SUFFIX
+        { "dll",    "library",  "Generates one shared library, <package>" UDATA_SO_SUFFIX },
+#endif
+        { "common", "archive",  "Generates one common data file, <package>.dat" },
+        { "static", "static",   "Generates one statically linked library, " LIB_PREFIX "<package>" UDATA_LIB_SUFFIX }
+#endif
+};
+
+static UOption options[]={
+    /*00*/    UOPTION_DEF( "name",    'p', UOPT_REQUIRES_ARG),
+    /*01*/    UOPTION_DEF( "bldopt",  'O', UOPT_REQUIRES_ARG), /* on Win32 it is release or debug */
+    /*02*/    UOPTION_DEF( "mode",    'm', UOPT_REQUIRES_ARG),
+    /*03*/    UOPTION_HELP_H,                                   /* -h */
+    /*04*/    UOPTION_HELP_QUESTION_MARK,                       /* -? */
+    /*05*/    UOPTION_VERBOSE,                                  /* -v */
+    /*06*/    UOPTION_COPYRIGHT,                                /* -c */
+    /*07*/    UOPTION_DEF( "comment", 'C', UOPT_REQUIRES_ARG),
+    /*08*/    UOPTION_DESTDIR,                                  /* -d */
+    /*11*/    UOPTION_DEF( "rebuild", 'F', UOPT_NO_ARG),
+    /*12*/    UOPTION_DEF( "tempdir", 'T', UOPT_REQUIRES_ARG),
+    /*13*/    UOPTION_DEF( "install", 'I', UOPT_REQUIRES_ARG),
+    /*14*/    UOPTION_SOURCEDIR ,
+    /*15*/    UOPTION_DEF( "entrypoint", 'e', UOPT_REQUIRES_ARG),
+    /*16*/    UOPTION_DEF( "revision", 'r', UOPT_REQUIRES_ARG),
+    /*17*/    UOPTION_DEF( "force-prefix", 'f', UOPT_NO_ARG),
+    /*18*/    UOPTION_DEF( "libname", 'L', UOPT_REQUIRES_ARG),
+    /*19*/    UOPTION_DEF( "quiet", 'q', UOPT_NO_ARG)
+};
+
+enum {
+    GENCCODE_ASSEMBLY_TYPE,
+    SO_EXT,
+    SOBJ_EXT,
+    A_EXT,
+    LIBPREFIX,
+    LIB_EXT_ORDER,
+    COMPILER,
+    LIBFLAGS,
+    GENLIB,
+    LDICUDTFLAGS,
+    LD_SONAME,
+    RPATH_FLAGS,
+    BIR_FLAGS,
+    AR,
+    ARFLAGS,
+    RANLIB,
+    INSTALL_CMD,
+    PKGDATA_FLAGS_SIZE
+};
+static char **pkgDataFlags = NULL;
+
+enum {
+    LIB_FILE,
+    LIB_FILE_VERSION_MAJOR,
+    LIB_FILE_VERSION,
+    LIB_FILE_VERSION_TMP,
+#ifdef U_CYGWIN
+    LIB_FILE_CYGWIN,
+        LIB_FILE_CYGWIN_VERSION,
+#endif
+    LIB_FILENAMES_SIZE
+};
+static char libFileNames[LIB_FILENAMES_SIZE][256];
+
+static UPKGOptions  *pkg_checkFlag(UPKGOptions *o);
+
+const char options_help[][320]={
+    "Set the data name",
+#ifdef U_MAKE_IS_NMAKE
+    "The directory where the ICU is located (e.g. <ICUROOT> which contains the bin directory)",
+#else
+    "Specify options for the builder.",
+#endif
+    "Specify the mode of building (see below; default: common)",
+    "This usage text",
+    "This usage text",
+    "Make the output verbose",
+    "Use the standard ICU copyright",
+    "Use a custom comment (instead of the copyright)",
+    "Specify the destination directory for files",
+    "Force rebuilding of all data",
+    "Specify temporary dir (default: output dir)",
+    "Install the data (specify target)",
+    "Specify a custom source directory",
+    "Specify a custom entrypoint name (default: short name)",
+    "Specify a version when packaging in dll or static mode",
+    "Add package to all file names if not present",
+    "Library name to build (if different than package name)",
+    "Quite mode. (e.g. Do not output a readme file for static libraries)"
+};
+
+const char  *progname = "PKGDATA";
+
+int
+main(int argc, char* argv[]) {
+    int result = 0;
+    /* FileStream  *out; */
+    UPKGOptions  o;
+    CharList    *tail;
+    UBool        needsHelp = FALSE;
+    UErrorCode   status = U_ZERO_ERROR;
+    /* char         tmp[1024]; */
+    uint32_t i;
+    int32_t n;
+
+    U_MAIN_INIT_ARGS(argc, argv);
+
+    progname = argv[0];
+
+    options[MODE].value = "common";
+
+    /* read command line options */
+    argc=u_parseArgs(argc, argv, sizeof(options)/sizeof(options[0]), options);
+
+    /* error handling, printing usage message */
+    /* I've decided to simply print an error and quit. This tool has too
+    many options to just display them all of the time. */
+
+    if(options[HELP].doesOccur || options[HELP_QUESTION_MARK].doesOccur) {
+        needsHelp = TRUE;
+    }
+    else {
+        if(!needsHelp && argc<0) {
+            fprintf(stderr,
+                "%s: error in command line argument \"%s\"\n",
+                progname,
+                argv[-argc]);
+            fprintf(stderr, "Run '%s --help' for help.\n", progname);
+            return 1;
+        }
+
+
+#if !defined(WINDOWS_WITH_MSVC) || defined(USING_CYGWIN)
+        if(!options[BLDOPT].doesOccur && uprv_strcmp(options[MODE].value, "common") != 0) {
+          if (pkg_getOptionsFromICUConfig(options[VERBOSE].doesOccur, &options[BLDOPT]) != 0) {
+                fprintf(stderr, " required parameter is missing: -O is required for static and shared builds.\n");
+                fprintf(stderr, "Run '%s --help' for help.\n", progname);
+                return 1;
+            }
+        }
+#else
+        if(options[BLDOPT].doesOccur) {
+            fprintf(stdout, "Warning: You are using the -O option which is not needed for MSVC build on Windows.\n");
+        }
+#endif
+
+        if(!options[NAME].doesOccur) /* -O we already have - don't report it. */
+        {
+            fprintf(stderr, " required parameter -p is missing \n");
+            fprintf(stderr, "Run '%s --help' for help.\n", progname);
+            return 1;
+        }
+
+        if(argc == 1) {
+            fprintf(stderr,
+                "No input files specified.\n"
+                "Run '%s --help' for help.\n", progname);
+            return 1;
+        }
+    }   /* end !needsHelp */
+
+    if(argc<0 || needsHelp  ) {
+        fprintf(stderr,
+            "usage: %s [-options] [-] [packageFile] \n"
+            "\tProduce packaged ICU data from the given list(s) of files.\n"
+            "\t'-' by itself means to read from stdin.\n"
+            "\tpackageFile is a text file containing the list of files to package.\n",
+            progname);
+
+        fprintf(stderr, "\n options:\n");
+        for(i=0;i<(sizeof(options)/sizeof(options[0]));i++) {
+            fprintf(stderr, "%-5s -%c %s%-10s  %s\n",
+                (i<1?"[REQ]":""),
+                options[i].shortName,
+                options[i].longName ? "or --" : "     ",
+                options[i].longName ? options[i].longName : "",
+                options_help[i]);
+        }
+
+        fprintf(stderr, "modes: (-m option)\n");
+        for(i=0;i<(sizeof(modes)/sizeof(modes[0]));i++) {
+            fprintf(stderr, "   %-9s ", modes[i].name);
+            if (modes[i].alt_name) {
+                fprintf(stderr, "/ %-9s", modes[i].alt_name);
+            } else {
+                fprintf(stderr, "           ");
+            }
+            fprintf(stderr, "  %s\n", modes[i].desc);
+        }
+        return 1;
+    }
+
+    /* OK, fill in the options struct */
+    uprv_memset(&o, 0, sizeof(o));
+
+    o.mode      = options[MODE].value;
+    o.version   = options[REVISION].doesOccur ? options[REVISION].value : 0;
+
+    o.shortName = options[NAME].value;
+    {
+        int32_t len = (int32_t)uprv_strlen(o.shortName);
+        char *csname, *cp;
+        const char *sp;
+
+        cp = csname = (char *) uprv_malloc((len + 1 + 1) * sizeof(*o.cShortName));
+        if (*(sp = o.shortName)) {
+            *cp++ = isalpha(*sp) ? * sp : '_';
+            for (++sp; *sp; ++sp) {
+                *cp++ = isalnum(*sp) ? *sp : '_';
+            }
+        }
+        *cp = 0;
+
+        o.cShortName = csname;
+    }
+
+    if(options[LIBNAME].doesOccur) { /* get libname from shortname, or explicit -L parameter */
+      o.libName = options[LIBNAME].value;
+    } else {
+      o.libName = o.shortName;
+    }
+
+    if(options[QUIET].doesOccur) {
+      o.quiet = TRUE;
+    } else {
+      o.quiet = FALSE;
+    }
+
+    o.verbose   = options[VERBOSE].doesOccur;
+
+
+#if !defined(WINDOWS_WITH_MSVC) || defined(USING_CYGWIN) /* on UNIX, we'll just include the file... */
+    if (options[BLDOPT].doesOccur) {
+        o.options   = options[BLDOPT].value;
+    } else {
+        o.options = NULL;
+    }
+#endif
+    if(options[COPYRIGHT].doesOccur) {
+        o.comment = U_COPYRIGHT_STRING;
+    } else if (options[COMMENT].doesOccur) {
+        o.comment = options[COMMENT].value;
+    }
+
+    if( options[DESTDIR].doesOccur ) {
+        o.targetDir = options[DESTDIR].value;
+    } else {
+        o.targetDir = ".";  /* cwd */
+    }
+
+    o.rebuild   = options[REBUILD].doesOccur;
+
+    if( options[TEMPDIR].doesOccur ) {
+        o.tmpDir    = options[TEMPDIR].value;
+    } else {
+        o.tmpDir    = o.targetDir;
+    }
+
+    if( options[INSTALL].doesOccur ) {
+        o.install  = options[INSTALL].value;
+    } else {
+        o.install = NULL;
+    }
+
+    if( options[SOURCEDIR].doesOccur ) {
+        o.srcDir   = options[SOURCEDIR].value;
+    } else {
+        o.srcDir   = ".";
+    }
+
+    if( options[ENTRYPOINT].doesOccur ) {
+        o.entryName = options[ENTRYPOINT].value;
+    } else {
+        o.entryName = o.cShortName;
+    }
+
+    /* OK options are set up. Now the file lists. */
+    tail = NULL;
+    for( n=1; n<argc; n++) {
+        o.fileListFiles = pkg_appendToList(o.fileListFiles, &tail, uprv_strdup(argv[n]));
+    }
+
+    /* load the files */
+    loadLists(&o, &status);
+    if( U_FAILURE(status) ) {
+        fprintf(stderr, "error loading input file lists: %s\n", u_errorName(status));
+        return 2;
+    }
+
+    result = pkg_executeOptions(&o);
+
+    if (pkgDataFlags != NULL) {
+        for (n = 0; n < PKGDATA_FLAGS_SIZE; n++) {
+            if (pkgDataFlags[n] != NULL) {
+                uprv_free(pkgDataFlags[n]);
+            }
+        }
+        uprv_free(pkgDataFlags);
+    }
+
+    if (o.cShortName != NULL) {
+        uprv_free((char *)o.cShortName);
+    }
+    if (o.fileListFiles != NULL) {
+        pkg_deleteList(o.fileListFiles);
+    }
+    if (o.filePaths != NULL) {
+        pkg_deleteList(o.filePaths);
+    }
+    if (o.files != NULL) {
+        pkg_deleteList(o.files);
+    }
+
+    return result;
+}
+
+static int runCommand(const char* command, UBool specialHandling) {
+    char *cmd = NULL;
+    char cmdBuffer[SMALL_BUFFER_MAX_SIZE];
+    int32_t len = strlen(command);
+
+    if (len == 0) {
+        return 0;
+    }
+
+    if (!specialHandling) {
+#if defined(USING_CYGWIN) || defined(OS400)
+#define CMD_PADDING_SIZE 20
+        if ((len + CMD_PADDING_SIZE) >= SMALL_BUFFER_MAX_SIZE) {
+            cmd = (char *)uprv_malloc(len + CMD_PADDING_SIZE);
+        } else {
+            cmd = cmdBuffer;
+        }
+#ifdef USING_CYGWIN
+        sprintf(cmd, "bash -c \"%s\"", command);
+
+#elif defined(OS400)
+        sprintf(cmd, "QSH CMD('%s')", command);
+#endif
+#else
+        goto normal_command_mode;
+#endif
+    } else {
+normal_command_mode:
+        cmd = (char *)command;
+    }
+
+    printf("pkgdata: %s\n", cmd);
+    int result = system(cmd);
+    if (result != 0) {
+        printf("-- return status = %d\n", result);
+    }
+
+    if (cmd != cmdBuffer && cmd != command) {
+        uprv_free(cmd);
+    }
+
+    return result;
+}
+
+#define LN_CMD "ln -s"
+#define RM_CMD "rm -f"
+
+#define MODE_COMMON 'c'
+#define MODE_STATIC 's'
+#define MODE_DLL    'd'
+#define MODE_FILES  'f'
+
+static int32_t pkg_executeOptions(UPKGOptions *o) {
+    int32_t result = 0;
+
+    const char mode = o->mode[0];
+    char targetDir[SMALL_BUFFER_MAX_SIZE] = "";
+    char tmpDir[SMALL_BUFFER_MAX_SIZE] = "";
+    char datFileName[SMALL_BUFFER_MAX_SIZE] = "";
+    char datFileNamePath[LARGE_BUFFER_MAX_SIZE] = "";
+    char checkLibFile[LARGE_BUFFER_MAX_SIZE] = "";
+
+    initializePkgDataFlags(o);
+
+    if (mode == MODE_FILES) {
+        /* Copy the raw data to the installation directory. */
+        if (o->install != NULL) {
+            uprv_strcpy(targetDir, o->install);
+            if (o->shortName != NULL) {
+                uprv_strcat(targetDir, PKGDATA_FILE_SEP_STRING);
+                uprv_strcat(targetDir, o->shortName);
+            }
+            
+            if(o->verbose) {
+              fprintf(stdout, "# Install: Files mode, copying files to %s..\n", targetDir);
+            }
+            result = pkg_installFileMode(targetDir, o->srcDir, o->fileListFiles->str);
+        }
+        return result;
+    } else /* if (mode == MODE_COMMON || mode == MODE_STATIC || mode == MODE_DLL) */ {
+        uprv_strcpy(targetDir, o->targetDir);
+        uprv_strcat(targetDir, PKGDATA_FILE_SEP_STRING);
+
+        uprv_strcpy(tmpDir, o->tmpDir);
+        uprv_strcat(tmpDir, PKGDATA_FILE_SEP_STRING);
+
+        uprv_strcpy(datFileNamePath, tmpDir);
+
+        uprv_strcpy(datFileName, o->shortName);
+        uprv_strcat(datFileName, UDATA_CMN_SUFFIX);
+
+        uprv_strcat(datFileNamePath, datFileName);
+
+        if(o->verbose) {
+          fprintf(stdout, "# Writing package file %s ..\n", datFileNamePath);
+        }
+        result = writePackageDatFile(datFileNamePath, o->comment, o->srcDir, o->fileListFiles->str, NULL, U_CHARSET_FAMILY ? 'e' :  U_IS_BIG_ENDIAN ? 'b' : 'l');
+        if (result != 0) {
+            fprintf(stderr,"Error writing package dat file.\n");
+            return result;
+        }
+
+        if (mode == MODE_COMMON) {
+            char targetFileNamePath[LARGE_BUFFER_MAX_SIZE] = "";
+
+            uprv_strcpy(targetFileNamePath, targetDir);
+            uprv_strcat(targetFileNamePath, datFileName);
+
+            if (T_FileStream_file_exists(targetFileNamePath)) {
+                if ((result = remove(targetFileNamePath)) != 0) {
+                    fprintf(stderr, "Unable to remove old dat file: %s\n", targetFileNamePath);
+                    return result;
+                }
+            }
+
+            /* Move the dat file created to the target directory. */
+            result = rename(datFileNamePath, targetFileNamePath);
+
+            if(o->verbose) {
+              fprintf(stdout, "# Moving package file to %s ..\n", targetFileNamePath);
+            }
+            if (result != 0) {
+                fprintf(stderr, "Unable to move dat file (%s) to target location (%s).\n", datFileNamePath, targetFileNamePath);
+            }
+
+            if (o->install != NULL) {
+                result = pkg_installCommonMode(o->install, targetFileNamePath);
+            }
+
+            return result;
+        } else /* if (mode[0] == MODE_STATIC || mode[0] == MODE_DLL) */ {
+            char gencFilePath[SMALL_BUFFER_MAX_SIZE] = "";
+            char version_major[10] = "";
+            UBool reverseExt = FALSE;
+
+#if !defined(WINDOWS_WITH_MSVC) || defined(USING_CYGWIN)
+            /* Get the version major number. */
+            if (o->version != NULL) {
+                for (uint32_t i = 0;i < sizeof(version_major);i++) {
+                    if (o->version[i] == '.') {
+                        version_major[i] = 0;
+                        break;
+                    }
+                    version_major[i] = o->version[i];
+                }
+            }
+
+#ifndef OS400
+            /* Certain platforms have different library extension ordering. (e.g. libicudata.##.so vs libicudata.so.##)
+             * reverseExt is FALSE if the suffix should be the version number.
+             */
+            if (pkgDataFlags[LIB_EXT_ORDER][uprv_strlen(pkgDataFlags[LIB_EXT_ORDER])-1] == pkgDataFlags[SO_EXT][uprv_strlen(pkgDataFlags[SO_EXT])-1]) {
+                reverseExt = TRUE;
+            }
+#endif
+            /* Using the base libName and version number, generate the library file names. */
+            createFileNames(o, mode, version_major, o->version, o->libName, reverseExt);
+
+            if ((o->version!=NULL || (mode==MODE_STATIC)) && o->rebuild == FALSE) {
+                /* Check to see if a previous built data library file exists and check if it is the latest. */
+                sprintf(checkLibFile, "%s%s", targetDir, libFileNames[LIB_FILE_VERSION]);
+                if (T_FileStream_file_exists(checkLibFile)) {
+                    if (isFileModTimeLater(checkLibFile, o->srcDir, TRUE) && isFileModTimeLater(checkLibFile, o->options)) {
+                        if (o->install != NULL) {
+                          if(o->verbose) {
+                            fprintf(stdout, "# Installing already-built library into %s\n", o->install);
+                          }
+                          result = pkg_installLibrary(o->install, targetDir);
+                        } else {
+                          if(o->verbose) {
+                            printf("# Not rebuilding %s - up to date.\n", checkLibFile);
+                          }
+                        }
+                        return result;
+                    } else if (o->verbose && (o->install!=NULL)) {
+                      fprintf(stdout, "# Not installing up-to-date library %s into %s\n", checkLibFile, o->install);
+                    }
+                } else if(o->verbose && (o->install!=NULL)) {
+                  fprintf(stdout, "# Not installing missing %s into %s\n", checkLibFile, o->install);
+                }
+            }
+
+            pkg_checkFlag(o);
+#endif
+
+            if (pkgDataFlags[GENCCODE_ASSEMBLY_TYPE][0] != 0) {
+                const char* genccodeAssembly = pkgDataFlags[GENCCODE_ASSEMBLY_TYPE];
+
+                if(o->verbose) {
+                  fprintf(stdout, "# Generating assembly code %s of type %s ..\n", gencFilePath, genccodeAssembly);
+                }
+                
+                /* Offset genccodeAssembly by 3 because "-a " */
+                if (genccodeAssembly &&
+                    (uprv_strlen(genccodeAssembly)>3) &&
+                    checkAssemblyHeaderName(genccodeAssembly+3)) {
+                    writeAssemblyCode(datFileNamePath, o->tmpDir, o->entryName, NULL, gencFilePath);
+
+                    result = pkg_createWithAssemblyCode(targetDir, mode, gencFilePath);
+                    if (result != 0) {
+                        fprintf(stderr, "Error generating assembly code for data.\n");
+                        return result;
+                    } else if (mode == MODE_STATIC) {
+                      if(o->install != NULL) {
+                        if(o->verbose) {
+                          fprintf(stdout, "# Installing static library into %s\n", o->install);
+                        }
+                        result = pkg_installLibrary(o->install, targetDir);
+                      }
+                      return result;
+                    }
+                } else {
+                    fprintf(stderr,"Assembly type \"%s\" is unknown.\n", genccodeAssembly);
+                    return -1;
+                }
+            } else {
+                if(o->verbose) {
+                  fprintf(stdout, "# Writing object code to %s ..\n", gencFilePath);
+                }
+#ifdef CAN_WRITE_OBJ_CODE
+                writeObjectCode(datFileNamePath, o->tmpDir, o->entryName, NULL, NULL, gencFilePath);
+#ifdef U_LINUX
+                result = pkg_generateLibraryFile(targetDir, mode, gencFilePath);
+#elif defined(WINDOWS_WITH_MSVC)
+                result = pkg_createWindowsDLL(mode, gencFilePath, o);
+#endif
+#elif defined(BUILD_DATA_WITHOUT_ASSEMBLY)
+                result = pkg_createWithoutAssemblyCode(o, targetDir, mode);
+#endif
+                if (result != 0) {
+                    fprintf(stderr, "Error generating package data.\n");
+                    return result;
+                }
+            }
+#ifndef U_WINDOWS
+            if(mode != MODE_STATIC) {
+                /* Certain platforms uses archive library. (e.g. AIX) */
+                if(o->verbose) {
+                  fprintf(stdout, "# Creating data archive library file ..\n");
+                }
+                result = pkg_archiveLibrary(targetDir, o->version, reverseExt);
+                if (result != 0) {
+                    fprintf(stderr, "Error creating data archive library file.\n");
+                   return result;
+                }
+#ifndef OS400
+                /* Create symbolic links for the final library file. */
+                result = pkg_createSymLinks(targetDir);
+                if (result != 0) {
+                    fprintf(stderr, "Error creating symbolic links of the data library file.\n");
+                    return result;
+                }
+#endif
+            } /* !MODE_STATIC */
+#endif
+
+#if !defined(U_WINDOWS) || defined(USING_CYGWIN)
+            /* Install the libraries if option was set. */
+            if (o->install != NULL) {
+                if(o->verbose) {
+                  fprintf(stdout, "# Installing library file to %s ..\n", o->install);
+                }
+                result = pkg_installLibrary(o->install, targetDir);
+                if (result != 0) {
+                    fprintf(stderr, "Error installing the data library.\n");
+                    return result;
+                }
+            }
+#endif
+        }
+    }
+    return result;
+}
+
+/* Initialize the pkgDataFlags with the option file given. */
+static int32_t initializePkgDataFlags(UPKGOptions *o) {
+    UErrorCode status = U_ZERO_ERROR;
+    int32_t result = 0;
+    int32_t currentBufferSize = SMALL_BUFFER_MAX_SIZE;
+    int32_t tmpResult = 0;
+
+    /* Initialize pkgdataFlags */
+    pkgDataFlags = (char**)uprv_malloc(sizeof(char*) * PKGDATA_FLAGS_SIZE);
+
+    /* If we run out of space, allocate more */
+#if !defined(WINDOWS_WITH_MSVC) || defined(USING_CYGWIN)
+    do {
+#endif
+        if (pkgDataFlags != NULL) {
+            for (int32_t i = 0; i < PKGDATA_FLAGS_SIZE; i++) {
+                pkgDataFlags[i] = (char*)uprv_malloc(sizeof(char) * currentBufferSize);
+                if (pkgDataFlags[i] != NULL) {
+                    pkgDataFlags[i][0] = 0;
+                } else {
+                    fprintf(stderr,"Error allocating memory for pkgDataFlags.\n");
+                    return -1;
+                }
+            }
+        } else {
+            fprintf(stderr,"Error allocating memory for pkgDataFlags.\n");
+            return -1;
+        }
+
+        if (o->options == NULL) {
+            return result;
+        }
+
+#if !defined(WINDOWS_WITH_MSVC) || defined(USING_CYGWIN)
+        /* Read in options file. */
+        if(o->verbose) {
+          fprintf(stdout, "# Reading options file %s\n", o->options);
+        }
+        status = U_ZERO_ERROR;
+        tmpResult = parseFlagsFile(o->options, pkgDataFlags, currentBufferSize, (int32_t)PKGDATA_FLAGS_SIZE, &status);
+        if (status == U_BUFFER_OVERFLOW_ERROR) {
+            for (int32_t i = 0; i < PKGDATA_FLAGS_SIZE; i++) {
+                uprv_free(pkgDataFlags[i]);
+            }
+            currentBufferSize = tmpResult;
+        } else if (U_FAILURE(status)) {
+            fprintf(stderr,"Unable to open or read \"%s\" option file. status = %s\n", o->options, u_errorName(status));
+            return -1;
+        }
+#endif
+        if(o->verbose) {
+            fprintf(stdout, "# pkgDataFlags=");
+            for(int32_t i=0;i<PKGDATA_FLAGS_SIZE && pkgDataFlags[i][0];i++) {
+                fprintf(stdout, "%c \"%s\"", (i>0)?',':' ',pkgDataFlags[i]);
+            }
+            fprintf(stdout, "\n");
+        }
+#if !defined(WINDOWS_WITH_MSVC) || defined(USING_CYGWIN)
+    } while (status == U_BUFFER_OVERFLOW_ERROR);
+#endif
+
+    return result;
+}
+
+
+/*
+ * Given the base libName and version numbers, generate the libary file names and store it in libFileNames.
+ * Depending on the configuration, the library name may either end with version number or shared object suffix.
+ */
+static void createFileNames(UPKGOptions *o, const char mode, const char *version_major, const char *version, const char *libName, UBool reverseExt) {
+        sprintf(libFileNames[LIB_FILE], "%s%s",
+                pkgDataFlags[LIBPREFIX],
+                libName);
+
+        if(o->verbose) {
+          fprintf(stdout, "# libFileName[LIB_FILE] = %s\n", libFileNames[LIB_FILE]);
+        }
+
+        if (version != NULL) {
+#ifdef U_CYGWIN
+            sprintf(libFileNames[LIB_FILE_CYGWIN], "cyg%s.%s",
+                    libName,
+                    pkgDataFlags[SO_EXT]);
+            sprintf(libFileNames[LIB_FILE_CYGWIN_VERSION], "cyg%s%s.%s",
+                    libName,
+                    version_major,
+                    pkgDataFlags[SO_EXT]);
+
+            uprv_strcat(pkgDataFlags[SO_EXT], ".");
+            uprv_strcat(pkgDataFlags[SO_EXT], pkgDataFlags[A_EXT]);
+
+#elif defined(OS400) || defined(_AIX)
+            sprintf(libFileNames[LIB_FILE_VERSION_TMP], "%s.%s",
+                    libFileNames[LIB_FILE],
+                    pkgDataFlags[SOBJ_EXT]);
+#else
+            sprintf(libFileNames[LIB_FILE_VERSION_TMP], "%s%s%s.%s",
+                    libFileNames[LIB_FILE],
+                    pkgDataFlags[LIB_EXT_ORDER][0] == '.' ? "." : "",
+                    reverseExt ? version : pkgDataFlags[SOBJ_EXT],
+                    reverseExt ? pkgDataFlags[SOBJ_EXT] : version);
+#endif
+            sprintf(libFileNames[LIB_FILE_VERSION_MAJOR], "%s%s%s.%s",
+                    libFileNames[LIB_FILE],
+                    pkgDataFlags[LIB_EXT_ORDER][0] == '.' ? "." : "",
+                    reverseExt ? version_major : pkgDataFlags[SO_EXT],
+                    reverseExt ? pkgDataFlags[SO_EXT] : version_major);
+
+            sprintf(libFileNames[LIB_FILE_VERSION], "%s%s%s.%s",
+                    libFileNames[LIB_FILE],
+                    pkgDataFlags[LIB_EXT_ORDER][0] == '.' ? "." : "",
+                    reverseExt ? version : pkgDataFlags[SO_EXT],
+                    reverseExt ? pkgDataFlags[SO_EXT] : version);
+
+            if(o->verbose) {
+              fprintf(stdout, "# libFileName[LIB_FILE_VERSION] = %s\n", libFileNames[LIB_FILE_VERSION]);
+            }
+
+#ifdef U_CYGWIN
+            /* Cygwin only deals with the version major number. */
+            uprv_strcpy(libFileNames[LIB_FILE_VERSION_TMP], libFileNames[LIB_FILE_VERSION_MAJOR]);
+#endif
+        }
+        if(mode == MODE_STATIC) {
+            sprintf(libFileNames[LIB_FILE_VERSION], "%s.%s", libFileNames[LIB_FILE], pkgDataFlags[A_EXT]);
+            libFileNames[LIB_FILE_VERSION_MAJOR][0]=0;
+            if(o->verbose) {
+              fprintf(stdout, "# libFileName[LIB_FILE_VERSION] = %s  (static)\n", libFileNames[LIB_FILE_VERSION]);
+            }
+        }
+}
+
+/* Create the symbolic links for the final library file. */
+static int32_t pkg_createSymLinks(const char *targetDir, UBool specialHandling) {
+    int32_t result = 0;
+    char cmd[LARGE_BUFFER_MAX_SIZE];
+    char name1[SMALL_BUFFER_MAX_SIZE]; /* symlink file name */
+    char name2[SMALL_BUFFER_MAX_SIZE]; /* file name to symlink */
+
+#ifndef USING_CYGWIN
+    /* No symbolic link to make. */
+    if (uprv_strlen(libFileNames[LIB_FILE_VERSION]) == 0 || uprv_strlen(libFileNames[LIB_FILE_VERSION_MAJOR]) == 0 ||
+        uprv_strcmp(libFileNames[LIB_FILE_VERSION], libFileNames[LIB_FILE_VERSION_MAJOR]) == 0) {
+        return result;
+    }
+    
+    sprintf(cmd, "cd %s && %s %s && %s %s %s",
+            targetDir,
+            RM_CMD,
+            libFileNames[LIB_FILE_VERSION_MAJOR],
+            LN_CMD,
+            libFileNames[LIB_FILE_VERSION],
+            libFileNames[LIB_FILE_VERSION_MAJOR]);
+    result = runCommand(cmd);
+    if (result != 0) {
+        return result;
+    }
+#endif
+
+    if (specialHandling) {
+#ifdef U_CYGWIN
+        sprintf(name1, "%s", libFileNames[LIB_FILE_CYGWIN]);
+        sprintf(name2, "%s", libFileNames[LIB_FILE_CYGWIN_VERSION]);
+#else
+        goto normal_symlink_mode;
+#endif
+    } else {
+normal_symlink_mode:
+        sprintf(name1, "%s.%s", libFileNames[LIB_FILE], pkgDataFlags[SO_EXT]);
+        sprintf(name2, "%s", libFileNames[LIB_FILE_VERSION]);
+    }
+
+    sprintf(cmd, "cd %s && %s %s && %s %s %s",
+            targetDir,
+            RM_CMD,
+            name1,
+            LN_CMD,
+            name2,
+            name1);
+
+     result = runCommand(cmd);
+
+    return result;
+}
+
+static int32_t pkg_installLibrary(const char *installDir, const char *targetDir) {
+    int32_t result = 0;
+    char cmd[SMALL_BUFFER_MAX_SIZE];
+
+    sprintf(cmd, "cd %s && %s %s %s%s%s",
+            targetDir,
+            pkgDataFlags[INSTALL_CMD],
+            libFileNames[LIB_FILE_VERSION],
+            installDir, PKGDATA_FILE_SEP_STRING, libFileNames[LIB_FILE_VERSION]
+            );
+
+    result = runCommand(cmd);
+
+    if (result != 0) {
+        return result;
+    }
+
+#ifdef CYGWINMSVC
+    sprintf(cmd, "cd %s && %s %s.lib %s",
+            targetDir,
+            pkgDataFlags[INSTALL_CMD],
+            libFileNames[LIB_FILE],
+            installDir
+            );
+    result = runCommand(cmd);
+
+    if (result != 0) {
+        return result;
+    }
+#elif defined (U_CYGWIN)
+    sprintf(cmd, "cd %s && %s %s %s",
+            targetDir,
+            pkgDataFlags[INSTALL_CMD],
+            libFileNames[LIB_FILE_CYGWIN_VERSION],
+            installDir
+            );
+    result = runCommand(cmd);
+
+    if (result != 0) {
+        return result;
+    }
+#endif
+
+    return pkg_createSymLinks(installDir, TRUE);
+}
+
+static int32_t pkg_installCommonMode(const char *installDir, const char *fileName) {
+    int32_t result = 0;
+    char cmd[SMALL_BUFFER_MAX_SIZE] = "";
+
+    if (!T_FileStream_file_exists(installDir)) {
+        UErrorCode status = U_ZERO_ERROR;
+
+        uprv_mkdir(installDir, &status);
+        if (U_FAILURE(status)) {
+            fprintf(stderr, "Error creating installation directory: %s\n", installDir);
+            return -1;
+        }
+    }
+#ifndef U_WINDOWS_WITH_MSVC
+    sprintf(cmd, "%s %s %s", pkgDataFlags[INSTALL_CMD], fileName, installDir);
+#else
+    sprintf(cmd, "%s %s %s %s", WIN_INSTALL_CMD, fileName, installDir, WIN_INSTALL_CMD_FLAGS);
+#endif
+
+    result = runCommand(cmd);
+    if (result != 0) {
+        fprintf(stderr, "Failed to install data file with command: %s\n", cmd);
+    }
+
+    return result;
+}
+
+#ifdef U_WINDOWS_MSVC
+/* Copy commands for installing the raw data files on Windows. */
+#define WIN_INSTALL_CMD "xcopy"
+#define WIN_INSTALL_CMD_FLAGS "/E /Y /K"
+#endif
+static int32_t pkg_installFileMode(const char *installDir, const char *srcDir, const char *fileListName) {
+    int32_t result = 0;
+    char cmd[SMALL_BUFFER_MAX_SIZE] = "";
+
+    if (!T_FileStream_file_exists(installDir)) {
+        UErrorCode status = U_ZERO_ERROR;
+
+        uprv_mkdir(installDir, &status);
+        if (U_FAILURE(status)) {
+            fprintf(stderr, "Error creating installation directory: %s\n", installDir);
+            return -1;
+        }
+    }
+#ifndef U_WINDOWS_WITH_MSVC
+    char buffer[SMALL_BUFFER_MAX_SIZE] = "";
+
+    FileStream *f = T_FileStream_open(fileListName, "r");
+    if (f != NULL) {
+        for(;;) {
+            if (T_FileStream_readLine(f, buffer, SMALL_BUFFER_MAX_SIZE) != NULL) {
+                /* Remove new line character. */
+                buffer[uprv_strlen(buffer)-1] = 0;
+
+                sprintf(cmd, "%s %s%s%s %s%s%s",
+                        pkgDataFlags[INSTALL_CMD],
+                        srcDir, PKGDATA_FILE_SEP_STRING, buffer,
+                        installDir, PKGDATA_FILE_SEP_STRING, buffer);
+
+                result = runCommand(cmd);
+                if (result != 0) {
+                    fprintf(stderr, "Failed to install data file with command: %s\n", cmd);
+                    break;
+                }
+            } else {
+                if (!T_FileStream_eof(f)) {
+                    fprintf(stderr, "Failed to read line from file: %s\n", fileListName);
+                    result = -1;
+                }
+                break;
+            }
+        }
+        T_FileStream_close(f);
+    } else {
+        result = -1;
+        fprintf(stderr, "Unable to open list file: %s\n", fileListName);
+    }
+#else
+    sprintf(cmd, "%s %s %s %s", WIN_INSTALL_CMD, srcDir, installDir, WIN_INSTALL_CMD_FLAGS);
+    result = runCommand(cmd);
+    if (result != 0) {
+        fprintf(stderr, "Failed to install data file with command: %s\n", cmd);
+    }
+#endif
+
+    return result;
+}
+
+/* Archiving of the library file may be needed depending on the platform and options given.
+ * If archiving is not needed, copy over the library file name.
+ */
+static int32_t pkg_archiveLibrary(const char *targetDir, const char *version, UBool reverseExt) {
+    int32_t result = 0;
+    char cmd[LARGE_BUFFER_MAX_SIZE];
+
+    /* If the shared object suffix and the final object suffix is different and the final object suffix and the
+     * archive file suffix is the same, then the final library needs to be archived.
+     */
+    if (uprv_strcmp(pkgDataFlags[SOBJ_EXT], pkgDataFlags[SO_EXT]) != 0 && uprv_strcmp(pkgDataFlags[A_EXT], pkgDataFlags[SO_EXT]) == 0) {
+        sprintf(libFileNames[LIB_FILE_VERSION], "%s%s%s.%s",
+                libFileNames[LIB_FILE],
+                pkgDataFlags[LIB_EXT_ORDER][0] == '.' ? "." : "",
+                reverseExt ? version : pkgDataFlags[SO_EXT],
+                reverseExt ? pkgDataFlags[SO_EXT] : version);
+
+        sprintf(cmd, "%s %s %s%s %s%s",
+                pkgDataFlags[AR],
+                pkgDataFlags[ARFLAGS],
+                targetDir,
+                libFileNames[LIB_FILE_VERSION],
+                targetDir,
+                libFileNames[LIB_FILE_VERSION_TMP]);
+
+        result = runCommand(cmd); 
+        if (result != 0) { 
+            return result; 
+        } 
+        
+        sprintf(cmd, "%s %s%s", 
+            pkgDataFlags[RANLIB], 
+            targetDir, 
+            libFileNames[LIB_FILE_VERSION]);
+        
+        result = runCommand(cmd); 
+        if (result != 0) {
+            return result;
+        }
+
+        /* Remove unneeded library file. */
+        sprintf(cmd, "%s %s%s",
+                RM_CMD,
+                targetDir,
+                libFileNames[LIB_FILE_VERSION_TMP]);
+
+        result = runCommand(cmd);
+        if (result != 0) {
+            return result;
+        }
+
+    } else {
+        uprv_strcpy(libFileNames[LIB_FILE_VERSION], libFileNames[LIB_FILE_VERSION_TMP]);
+    }
+
+    return result;
+}
+
+/*
+ * Using the compiler information from the configuration file set by -O option, generate the library file.
+ * command may be given to allow for a larger buffer for cmd.
+ */
+static int32_t pkg_generateLibraryFile(const char *targetDir, const char mode, const char *objectFile, char *command) {
+    int32_t result = 0;
+    char *cmd = NULL;
+    UBool freeCmd = FALSE;
+
+    /* This is necessary because if packaging is done without assembly code, objectFile might be extremely large
+     * containing many object files and so the calling function should supply a command buffer that is large
+     * enough to handle this. Otherwise, use the default size.
+     */
+    if (command != NULL) {
+        cmd = command;
+    } else {
+        if ((cmd = (char *)uprv_malloc(sizeof(char) * LARGE_BUFFER_MAX_SIZE)) == NULL) {
+            fprintf(stderr, "Unable to allocate memory for command.\n");
+            return -1;
+        }
+        freeCmd = TRUE;
+    }
+
+    if (mode == MODE_STATIC) {
+        sprintf(cmd, "%s %s %s%s %s",
+                pkgDataFlags[AR],
+                pkgDataFlags[ARFLAGS],
+                targetDir,
+                libFileNames[LIB_FILE_VERSION],
+                objectFile);
+
+        result = runCommand(cmd);
+        if (result == 0) {
+            sprintf(cmd, "%s %s%s", 
+                    pkgDataFlags[RANLIB], 
+                    targetDir, 
+                    libFileNames[LIB_FILE_VERSION]); 
+        
+            result = runCommand(cmd);
+        }
+    } else /* if (mode == MODE_DLL) */ {
+#ifdef U_CYGWIN
+        sprintf(cmd, "%s%s%s %s -o %s%s %s %s%s %s %s",
+                pkgDataFlags[GENLIB],
+                targetDir,
+                libFileNames[LIB_FILE_VERSION_TMP],
+                pkgDataFlags[LDICUDTFLAGS],
+                targetDir, libFileNames[LIB_FILE_CYGWIN_VERSION],
+#else
+        sprintf(cmd, "%s %s -o %s%s %s %s%s %s %s",
+                pkgDataFlags[GENLIB],
+                pkgDataFlags[LDICUDTFLAGS],
+                targetDir,
+                libFileNames[LIB_FILE_VERSION_TMP],
+#endif
+                objectFile,
+                pkgDataFlags[LD_SONAME],
+                pkgDataFlags[LD_SONAME][0] == 0 ? "" : libFileNames[LIB_FILE_VERSION_MAJOR],
+                pkgDataFlags[RPATH_FLAGS],
+                pkgDataFlags[BIR_FLAGS]);
+
+        /* Generate the library file. */
+        result = runCommand(cmd);
+    }
+
+    if (freeCmd) {
+        uprv_free(cmd);
+    }
+
+    return result;
+}
+
+static int32_t pkg_createWithAssemblyCode(const char *targetDir, const char mode, const char *gencFilePath) {
+    char tempObjectFile[SMALL_BUFFER_MAX_SIZE] = "";
+    char *cmd;
+    int32_t result = 0;
+
+    int32_t length = 0;
+
+    /* Remove the ending .s and replace it with .o for the new object file. */
+    uprv_strcpy(tempObjectFile, gencFilePath);
+    tempObjectFile[uprv_strlen(tempObjectFile)-1] = 'o';
+
+    length = uprv_strlen(pkgDataFlags[COMPILER]) + uprv_strlen(pkgDataFlags[LIBFLAGS])
+                    + uprv_strlen(tempObjectFile) + uprv_strlen(gencFilePath) + 10;
+
+    cmd = (char *)uprv_malloc(sizeof(char) * length);
+    if (cmd == NULL) {
+        return -1;
+    }
+
+    /* Generate the object file. */
+    sprintf(cmd, "%s %s -o %s %s",
+            pkgDataFlags[COMPILER],
+            pkgDataFlags[LIBFLAGS],
+            tempObjectFile,
+            gencFilePath);
+
+    result = runCommand(cmd);
+    uprv_free(cmd);
+    if (result != 0) {
+        return result;
+    }
+
+    return pkg_generateLibraryFile(targetDir, mode, tempObjectFile);
+}
+
+#ifdef BUILD_DATA_WITHOUT_ASSEMBLY
+/*
+ * Generation of the data library without assembly code needs to compile each data file
+ * individually and then link it all together.
+ * Note: Any update to the directory structure of the data needs to be reflected here.
+ */
+enum {
+    DATA_PREFIX_BRKITR,
+    DATA_PREFIX_COLL,
+    DATA_PREFIX_CURR,
+    DATA_PREFIX_LANG,
+    DATA_PREFIX_RBNF,
+    DATA_PREFIX_REGION,
+    DATA_PREFIX_TRANSLIT,
+    DATA_PREFIX_ZONE,
+    DATA_PREFIX_LENGTH
+};
+
+const static char DATA_PREFIX[DATA_PREFIX_LENGTH][10] = {
+        "brkitr",
+        "coll",
+        "curr",
+        "lang",
+        "rbnf",
+        "region",
+        "translit",
+        "zone"
+};
+
+static int32_t pkg_createWithoutAssemblyCode(UPKGOptions *o, const char *targetDir, const char mode) {
+    int32_t result = 0;
+    CharList *list = o->filePaths;
+    CharList *listNames = o->files;
+    int32_t listSize = pkg_countCharList(list);
+    char *buffer;
+    char *cmd;
+    char gencmnFile[SMALL_BUFFER_MAX_SIZE] = "";
+    char tempObjectFile[SMALL_BUFFER_MAX_SIZE] = "";
+#ifdef USE_SINGLE_CCODE_FILE
+    char icudtAll[SMALL_BUFFER_MAX_SIZE] = "";
+    
+    sprintf(icudtAll, "%s%s%sall.c",
+            o->tmpDir,
+            PKGDATA_FILE_SEP_STRING, 
+            libFileNames[LIB_FILE]);
+    /* Remove previous icudtall.c file. */
+    if (T_FileStream_file_exists(icudtAll) && (result = remove(icudtAll)) != 0) {
+        fprintf(stderr, "Unable to remove old icudtall file: %s\n", icudtAll);
+        return result;
+    }
+#endif
+
+    if (list == NULL || listNames == NULL) {
+        /* list and listNames should never be NULL since we are looping through the CharList with
+         * the given size.
+         */
+        return -1;
+    }
+
+    if ((cmd = (char *)uprv_malloc((listSize + 2) * SMALL_BUFFER_MAX_SIZE)) == NULL) {
+        fprintf(stderr, "Unable to allocate memory for cmd.\n");
+        return -1;
+    } else if ((buffer = (char *)uprv_malloc((listSize + 1) * SMALL_BUFFER_MAX_SIZE)) == NULL) {
+        fprintf(stderr, "Unable to allocate memory for buffer.\n");
+        uprv_free(cmd);
+        return -1;
+    }
+
+    for (int32_t i = 0; i < (listSize + 1); i++) {
+        const char *file ;
+        const char *name;
+
+        if (i == 0) {
+            /* The first iteration calls the gencmn function and initailizes the buffer. */
+            createCommonDataFile(o->tmpDir, o->shortName, o->entryName, NULL, o->srcDir, o->comment, o->fileListFiles->str, 0, TRUE, o->verbose, gencmnFile);
+            buffer[0] = 0;
+#ifdef USE_SINGLE_CCODE_FILE
+            uprv_strcpy(tempObjectFile, gencmnFile);
+            tempObjectFile[uprv_strlen(tempObjectFile) - 1] = 'o';
+            
+            sprintf(cmd, "%s %s -o %s %s"
+                        pkgDataFlags[COMPILER],
+                        pkgDataFlags[LIBFLAGS],
+                        tempObjectFile,
+                        gencmnFile);
+            
+            result = runCommand(cmd);
+            if (result != 0) {
+                break;
+            }
+            
+            sprintf(buffer, "%s",tempObjectFile);
+#endif
+        } else {
+            char newName[SMALL_BUFFER_MAX_SIZE];
+            char dataName[SMALL_BUFFER_MAX_SIZE];
+            char dataDirName[SMALL_BUFFER_MAX_SIZE];
+            const char *pSubstring;
+            file = list->str;
+            name = listNames->str;
+
+            newName[0] = dataName[0] = 0;
+            for (int32_t n = 0; n < DATA_PREFIX_LENGTH; n++) {
+                dataDirName[0] = 0;
+                sprintf(dataDirName, "%s%s", DATA_PREFIX[n], PKGDATA_FILE_SEP_STRING);
+                /* If the name contains a prefix (indicating directory), alter the new name accordingly. */
+                pSubstring = uprv_strstr(name, dataDirName);
+                if (pSubstring != NULL) {
+                    char newNameTmp[SMALL_BUFFER_MAX_SIZE] = "";
+                    const char *p = name + uprv_strlen(dataDirName);
+                    for (int32_t i = 0;;i++) {
+                        if (p[i] == '.') {
+                            newNameTmp[i] = '_';
+                            continue;
+                        }
+                        newNameTmp[i] = p[i];
+                        if (p[i] == 0) {
+                            break;
+                        }
+                    }
+                    sprintf(newName, "%s_%s",
+                            DATA_PREFIX[n],
+                            newNameTmp);
+                    sprintf(dataName, "%s_%s",
+                            o->shortName,
+                            DATA_PREFIX[n]);
+                }
+                if (newName[0] != 0) {
+                    break;
+                }
+            }
+
+            writeCCode(file, o->tmpDir, dataName[0] != 0 ? dataName : o->shortName, newName[0] != 0 ? newName : NULL, gencmnFile);
+#ifdef USE_SINGLE_CCODE_FILE
+            sprintf(cmd, "cat %s >> %s", gencmnFile, icudtAll);
+            
+            result = runCommand(cmd);
+            if (result != 0) {
+                break;
+            } else {
+                /* Remove the c code file after concatenating it to icudtall.c file. */
+                if ((result = remove(gencmnFile)) != 0) {
+                    fprintf(stderr, "Unable to remove c code file: %s\n", gencmnFile);
+                    return result;
+                }
+            }
+#endif
+        }
+
+#ifndef USE_SINGLE_CCODE_FILE
+        uprv_strcpy(tempObjectFile, gencmnFile);
+        tempObjectFile[uprv_strlen(tempObjectFile) - 1] = 'o';
+        
+        sprintf(cmd, "%s %s -o %s %s",
+                    pkgDataFlags[COMPILER],
+                    pkgDataFlags[LIBFLAGS],
+                    tempObjectFile,
+                    gencmnFile);
+        result = runCommand(cmd);
+        if (result != 0) {
+            break;
+        }
+
+        uprv_strcat(buffer, " ");
+        uprv_strcat(buffer, tempObjectFile);
+
+#endif
+        
+        if (i > 0) {
+            list = list->next;
+            listNames = listNames->next;
+        }
+    }
+
+#ifdef USE_SINGLE_CCODE_FILE
+    uprv_strcpy(tempObjectFile, icudtAll);
+    tempObjectFile[uprv_strlen(tempObjectFile) - 1] = 'o';
+
+    sprintf(cmd, "%s %s -o %s %s",
+        pkgDataFlags[COMPILER],
+        pkgDataFlags[LIBFLAGS],
+        tempObjectFile,
+        icudtAll);
+    
+    result = runCommand(cmd);
+    if (result == 0) {
+        uprv_strcat(buffer, " ");
+        uprv_strcat(buffer, tempObjectFile);
+    }
+#endif
+
+    if (result == 0) {
+        /* Generate the library file. */
+        result = pkg_generateLibraryFile(targetDir, mode, buffer, cmd);
+    }
+
+    uprv_free(buffer);
+    uprv_free(cmd);
+
+    return result;
+}
+#endif
+
+#ifdef WINDOWS_WITH_MSVC
+#define LINK_CMD "link.exe /nologo /release /out:"
+#define LINK_FLAGS "/DLL /NOENTRY /MANIFEST:NO  /base:0x4ad00000 /implib:"
+#define LIB_CMD "LIB.exe /nologo /out:"
+#define LIB_FILE "icudt.lib"
+#define LIB_EXT UDATA_LIB_SUFFIX
+#define DLL_EXT UDATA_SO_SUFFIX
+
+static int32_t pkg_createWindowsDLL(const char mode, const char *gencFilePath, UPKGOptions *o) {
+    char cmd[LARGE_BUFFER_MAX_SIZE];
+    if (mode == MODE_STATIC) {
+        char staticLibFilePath[SMALL_BUFFER_MAX_SIZE] = "";
+
+        uprv_strcpy(staticLibFilePath, o->tmpDir);
+        uprv_strcat(staticLibFilePath, PKGDATA_FILE_SEP_STRING);
+
+        uprv_strcat(staticLibFilePath, o->entryName);
+        uprv_strcat(staticLibFilePath, LIB_EXT);
+
+        sprintf(cmd, "%s\"%s\" \"%s\"",
+                LIB_CMD,
+                staticLibFilePath,
+                gencFilePath);
+    } else if (mode == MODE_DLL) {
+        char dllFilePath[SMALL_BUFFER_MAX_SIZE] = "";
+        char libFilePath[SMALL_BUFFER_MAX_SIZE] = "";
+        char resFilePath[SMALL_BUFFER_MAX_SIZE] = "";
+        char tmpResFilePath[SMALL_BUFFER_MAX_SIZE] = "";
+
+#ifdef CYGWINMSVC
+        uprv_strcpy(dllFilePath, o->targetDir);
+#else
+        uprv_strcpy(dllFilePath, o->srcDir);
+#endif
+        uprv_strcat(dllFilePath, PKGDATA_FILE_SEP_STRING);
+        uprv_strcpy(libFilePath, dllFilePath);
+
+#ifdef CYGWINMSVC
+        uprv_strcat(libFilePath, o->libName);
+        uprv_strcat(libFilePath, ".lib");
+        
+        uprv_strcat(dllFilePath, o->libName);
+        uprv_strcat(dllFilePath, o->version);
+#else
+        if (strstr(o->libName, "icudt")) {
+            uprv_strcat(libFilePath, LIB_FILE);
+        } else {
+            uprv_strcat(libFilePath, o->libName);
+            uprv_strcat(libFilePath, ".lib");
+        }
+        uprv_strcat(dllFilePath, o->entryName);
+#endif
+        uprv_strcat(dllFilePath, DLL_EXT);
+        
+        uprv_strcpy(tmpResFilePath, o->tmpDir);
+        uprv_strcat(tmpResFilePath, PKGDATA_FILE_SEP_STRING);
+        uprv_strcat(tmpResFilePath, ICUDATA_RES_FILE);
+
+        if (T_FileStream_file_exists(tmpResFilePath)) {
+            sprintf(resFilePath, "\"%s\"", tmpResFilePath);
+        }
+
+        /* Check if dll file and lib file exists and that it is not newer than genc file. */
+        if (!o->rebuild && (T_FileStream_file_exists(dllFilePath) && isFileModTimeLater(dllFilePath, gencFilePath)) &&
+            (T_FileStream_file_exists(libFilePath) && isFileModTimeLater(libFilePath, gencFilePath))) {
+          if(o->verbose) {
+            printf("# Not rebuilding %s - up to date.\n", gencFilePath);
+          }
+          return 0;
+        }
+
+        sprintf(cmd, "%s\"%s\" %s\"%s\" \"%s\" %s",
+                LINK_CMD,
+                dllFilePath,
+                LINK_FLAGS,
+                libFilePath,
+                gencFilePath,
+                resFilePath
+                );
+    }
+
+    return runCommand(cmd, TRUE);
+}
+#endif
+
+static UPKGOptions *pkg_checkFlag(UPKGOptions *o) {
+#ifdef U_AIX
+    /* AIX needs a map file. */
+    char *flag = NULL;
+    int32_t length = 0;
+    char tmpbuffer[SMALL_BUFFER_MAX_SIZE];
+    const char MAP_FILE_EXT[] = ".map";
+    FileStream *f = NULL;
+    char mapFile[SMALL_BUFFER_MAX_SIZE] = "";
+    int32_t start = -1;
+    int32_t count = 0;
+
+    flag = pkgDataFlags[BIR_FLAGS];
+    length = uprv_strlen(pkgDataFlags[BIR_FLAGS]);
+
+    for (int32_t i = 0; i < length; i++) {
+        if (flag[i] == MAP_FILE_EXT[count]) {
+            if (count == 0) {
+                start = i;
+            }
+            count++;
+        } else {
+            count = 0;
+        }
+
+        if (count == uprv_strlen(MAP_FILE_EXT)) {
+            break;
+        }
+    }
+
+    if (start >= 0) {
+        int32_t index = 0;
+        for (int32_t i = 0;;i++) {
+            if (i == start) {
+                for (int32_t n = 0;;n++) {
+                    if (o->shortName[n] == 0) {
+                        break;
+                    }
+                    tmpbuffer[index++] = o->shortName[n];
+                }
+            }
+
+            tmpbuffer[index++] = flag[i];
+
+            if (flag[i] == 0) {
+                break;
+            }
+        }
+
+        uprv_memset(flag, 0, length);
+        uprv_strcpy(flag, tmpbuffer);
+
+        uprv_strcpy(mapFile, o->shortName);
+        uprv_strcat(mapFile, MAP_FILE_EXT);
+
+        f = T_FileStream_open(mapFile, "w");
+        if (f == NULL) {
+            fprintf(stderr,"Unable to create map file: %s.\n", mapFile);
+        } else {
+            sprintf(tmpbuffer, "%s%s ", o->entryName, UDATA_CMN_INTERMEDIATE_SUFFIX);
+    
+            T_FileStream_writeLine(f, tmpbuffer);
+    
+            T_FileStream_close(f);
+        }
+    }
+#elif defined(U_CYGWIN)
+    /* Cygwin needs to change flag options. */
+    char *flag = NULL;
+    int32_t length = 0;
+
+    flag = pkgDataFlags[GENLIB];
+    length = uprv_strlen(pkgDataFlags[GENLIB]);
+
+    int32_t position = length - 1;
+
+    for(;position >= 0;position--) {
+        if (flag[position] == '=') {
+            position++;
+            break;
+        }
+    }
+
+    uprv_memset(flag + position, 0, length - position);
+#elif defined(OS400)
+    /* OS400 needs to fix the ld options (swap single quote with double quote) */
+    char *flag = NULL;
+    int32_t length = 0;
+
+    flag = pkgDataFlags[GENLIB];
+    length = uprv_strlen(pkgDataFlags[GENLIB]);
+
+    int32_t position = length - 1;
+
+    for(int32_t i = 0; i < length; i++) {
+        if (flag[i] == '\'') {
+            flag[i] = '\"';
+        }
+    }
+#endif
+    // Don't really need a return value, just need to stop compiler warnings about
+    // the unused parameter 'o' on platforms where it is not otherwise used.
+    return o;   
+}
+
+static void loadLists(UPKGOptions *o, UErrorCode *status)
+{
+    CharList   *l, *tail = NULL, *tail2 = NULL;
+    FileStream *in;
+    char        line[16384];
+    char       *linePtr, *lineNext;
+    const uint32_t   lineMax = 16300;
+    char        tmp[1024];
+    char       *s;
+    int32_t     ln=0; /* line number */
+
+    for(l = o->fileListFiles; l; l = l->next) {
+        if(o->verbose) {
+            fprintf(stdout, "# pkgdata: Reading %s..\n", l->str);
+        }
+        /* TODO: stdin */
+        in = T_FileStream_open(l->str, "r"); /* open files list */
+
+        if(!in) {
+            fprintf(stderr, "Error opening <%s>.\n", l->str);
+            *status = U_FILE_ACCESS_ERROR;
+            return;
+        }
+
+        while(T_FileStream_readLine(in, line, sizeof(line))!=NULL) { /* for each line */
+            ln++;
+            if(uprv_strlen(line)>lineMax) {
+                fprintf(stderr, "%s:%d - line too long (over %d chars)\n", l->str, (int)ln, (int)lineMax);
+                exit(1);
+            }
+            /* remove spaces at the beginning */
+            linePtr = line;
+            while(isspace(*linePtr)) {
+                linePtr++;
+            }
+            s=linePtr;
+            /* remove trailing newline characters */
+            while(*s!=0) {
+                if(*s=='\r' || *s=='\n') {
+                    *s=0;
+                    break;
+                }
+                ++s;
+            }
+            if((*linePtr == 0) || (*linePtr == '#')) {
+                continue; /* comment or empty line */
+            }
+
+            /* Now, process the line */
+            lineNext = NULL;
+
+            while(linePtr && *linePtr) { /* process space-separated items */
+                while(*linePtr == ' ') {
+                    linePtr++;
+                }
+                /* Find the next quote */
+                if(linePtr[0] == '"')
+                {
+                    lineNext = uprv_strchr(linePtr+1, '"');
+                    if(lineNext == NULL) {
+                        fprintf(stderr, "%s:%d - missing trailing double quote (\")\n",
+                            l->str, (int)ln);
+                        exit(1);
+                    } else {
+                        lineNext++;
+                        if(*lineNext) {
+                            if(*lineNext != ' ') {
+                                fprintf(stderr, "%s:%d - malformed quoted line at position %d, expected ' ' got '%c'\n",
+                                    l->str, (int)ln, (int)(lineNext-line), (*lineNext)?*lineNext:'0');
+                                exit(1);
+                            }
+                            *lineNext = 0;
+                            lineNext++;
+                        }
+                    }
+                } else {
+                    lineNext = uprv_strchr(linePtr, ' ');
+                    if(lineNext) {
+                        *lineNext = 0; /* terminate at space */
+                        lineNext++;
+                    }
+                }
+
+                /* add the file */
+                s = (char*)getLongPathname(linePtr);
+
+                /* normal mode.. o->files is just the bare list without package names */
+                o->files = pkg_appendToList(o->files, &tail, uprv_strdup(linePtr));
+                if(uprv_pathIsAbsolute(s)) {
+                    fprintf(stderr, "pkgdata: Error: absolute path encountered. Old style paths are not supported. Use relative paths such as 'fur.res' or 'translit%cfur.res'.\n\tBad path: '%s'\n", U_FILE_SEP_CHAR, s);
+                    exit(U_ILLEGAL_ARGUMENT_ERROR);
+                }
+                uprv_strcpy(tmp, o->srcDir);
+                uprv_strcat(tmp, o->srcDir[uprv_strlen(o->srcDir)-1] == U_FILE_SEP_CHAR ? "" :PKGDATA_FILE_SEP_STRING);
+                uprv_strcat(tmp, s);
+                o->filePaths = pkg_appendToList(o->filePaths, &tail2, uprv_strdup(tmp));
+                linePtr = lineNext;
+            } /* for each entry on line */
+        } /* for each line */
+        T_FileStream_close(in);
+    } /* for each file list file */
+}
+
+/* Try calling icu-config directly to get the option file. */
+ static int32_t pkg_getOptionsFromICUConfig(UBool verbose, UOption *option) {
+#if U_HAVE_POPEN
+    FILE *p = NULL;
+    size_t n;
+    static char buf[512] = "";
+    char cmdBuf[1024];
+    UErrorCode status = U_ZERO_ERROR;
+    const char cmd[] = "icu-config --incpkgdatafile";
+
+    /* #1 try the same path where pkgdata was called from. */
+    findDirname(progname, cmdBuf, 1024, &status);
+    if(U_SUCCESS(status)) {
+      uprv_strncat(cmdBuf, U_FILE_SEP_STRING, 1024);
+      uprv_strncat(cmdBuf, cmd, 1024);
+      
+      if(verbose) {
+        fprintf(stdout, "# Calling icu-config: %s\n", cmdBuf);
+      }
+      p = popen(cmdBuf, "r");
+    }
+
+    if(p == NULL) {
+      if(verbose) {
+        fprintf(stdout, "# Calling icu-config: %s\n", cmd);
+      }
+      p = popen(cmd, "r");      
+    }
+
+    if(p == NULL)
+    {
+        fprintf(stderr, "%s: icu-config: No icu-config found. (fix PATH or use -O option)\n", progname);
+        return -1;
+    }
+
+    n = fread(buf, 1, 511, p);
+
+    pclose(p);
+
+    if(n<=0)
+    {
+        fprintf(stderr,"%s: icu-config: Could not read from icu-config. (fix PATH or use -O option)\n", progname);
+        return -1;
+    }
+
+    for (int32_t length = strlen(buf) - 1; length >= 0; length--) {
+        if (buf[length] == '\n' || buf[length] == ' ') {
+            buf[length] = 0;
+        } else {
+            break;
+        }
+    }
+
+    if(buf[strlen(buf)-1]=='\n')
+    {
+        buf[strlen(buf)-1]=0;
+    }
+
+    if(buf[0] == 0)
+    {
+        fprintf(stderr, "%s: icu-config: invalid response from icu-config (fix PATH or use -O option)\n", progname);
+        return -1;
+    }
+
+    if(verbose) {
+      fprintf(stdout, "# icu-config said: %s\n", buf);
+    }
+
+    option->value = buf;
+    option->doesOccur = TRUE;
+
+    return 0;
+#endif
+    return -1;
+}