use forward declaration in headers if possible instead of includes

99 files changed, 380 insertions, 232 deletions

diff --git a/apt-inst/contrib/arfile.cc b/apt-inst/contrib/arfile.cc
index 4e078349e..2dee1a40d 100644
--- a/apt-inst/contrib/arfile.cc
+++ b/apt-inst/contrib/arfile.cc
@@ -18,6 +18,7 @@
 
 #include <apt-pkg/arfile.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/error.h>
 
 #include <stdlib.h>
diff --git a/apt-inst/contrib/arfile.h b/apt-inst/contrib/arfile.h
index bfc128ace..2be1323d1 100644
--- a/apt-inst/contrib/arfile.h
+++ b/apt-inst/contrib/arfile.h
@@ -17,7 +17,8 @@
 
 
 #include <string>
-#include <apt-pkg/fileutl.h>
+
+class FileFd;
 
 class ARArchive
 {
diff --git a/apt-inst/contrib/extracttar.cc b/apt-inst/contrib/extracttar.cc
index 487027c3d..12919a7cd 100644
--- a/apt-inst/contrib/extracttar.cc
+++ b/apt-inst/contrib/extracttar.cc
@@ -18,6 +18,7 @@
 // Include Files							/*{{{*/
 #include<config.h>
 
+#include <apt-pkg/dirstream.h>
 #include <apt-pkg/extracttar.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
diff --git a/apt-inst/contrib/extracttar.h b/apt-inst/contrib/extracttar.h
index 27c453d0d..8754e8dcc 100644
--- a/apt-inst/contrib/extracttar.h
+++ b/apt-inst/contrib/extracttar.h
@@ -15,9 +15,10 @@
 #define PKGLIB_EXTRACTTAR_H
 
 #include <apt-pkg/fileutl.h>
-#include <apt-pkg/dirstream.h>
 
-#include <algorithm>
+#include <string>
+
+class pkgDirStream;
 
 class ExtractTar
 {
diff --git a/apt-inst/database.cc b/apt-inst/database.cc
index 1a94e1353..da7613491 100644
--- a/apt-inst/database.cc
+++ b/apt-inst/database.cc
@@ -11,6 +11,8 @@
 #include<config.h>
 
 #include <apt-pkg/database.h>
+#include <apt-pkg/filelist.h>
+#include <apt-pkg/pkgcachegen.h>
 									/*}}}*/
 
 // DataBase::GetMetaTmp - Get the temp dir				/*{{{*/
@@ -26,3 +28,8 @@ bool pkgDataBase::GetMetaTmp(std::string &Dir)
    return true;
 }
 									/*}}}*/
+pkgDataBase::~pkgDataBase()
+{
+   delete Cache;
+   delete FList;
+}
diff --git a/apt-inst/database.h b/apt-inst/database.h
index cd0e310bc..ccfee3797 100644
--- a/apt-inst/database.h
+++ b/apt-inst/database.h
@@ -21,9 +21,13 @@
 #ifndef PKGLIB_DATABASE_H
 #define PKGLIB_DATABASE_H
 
-#include <apt-pkg/filelist.h>
 #include <apt-pkg/pkgcachegen.h>
 
+#include <string>
+
+class pkgFLCache;
+class OpProgress;
+
 class pkgDataBase
 {
    protected:
@@ -46,7 +50,7 @@ class pkgDataBase
    virtual bool LoadChanges() = 0;
 
    pkgDataBase() : Cache(0), FList(0) {};
-   virtual ~pkgDataBase() {delete Cache; delete FList;};
+   virtual ~pkgDataBase();
 };
 
 #endif
diff --git a/apt-inst/deb/debfile.cc b/apt-inst/deb/debfile.cc
index 8ade547f5..4bd065cf8 100644
--- a/apt-inst/deb/debfile.cc
+++ b/apt-inst/deb/debfile.cc
@@ -18,6 +18,7 @@
 // Include Files							/*{{{*/
 #include<config.h>
 
+#include <apt-pkg/database.h>
 #include <apt-pkg/debfile.h>
 #include <apt-pkg/extracttar.h>
 #include <apt-pkg/error.h>
diff --git a/apt-inst/deb/debfile.h b/apt-inst/deb/debfile.h
index e404d81db..2c4734f9e 100644
--- a/apt-inst/deb/debfile.h
+++ b/apt-inst/deb/debfile.h
@@ -25,9 +25,12 @@
 
 
 #include <apt-pkg/arfile.h>
-#include <apt-pkg/database.h>
 #include <apt-pkg/dirstream.h>
 #include <apt-pkg/tagfile.h>
+#include <apt-pkg/pkgcache.h>
+
+class FileFd;
+class pkgDataBase;
 
 class debDebFile
 {
diff --git a/apt-inst/deb/dpkgdb.cc b/apt-inst/deb/dpkgdb.cc
index 3112acdbd..819c123f6 100644
--- a/apt-inst/deb/dpkgdb.cc
+++ b/apt-inst/deb/dpkgdb.cc
@@ -21,6 +21,8 @@
 #include <apt-pkg/progress.h>
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/filelist.h>
 
 #include <stdio.h>
 #include <errno.h>
diff --git a/apt-inst/deb/dpkgdb.h b/apt-inst/deb/dpkgdb.h
index 3656929aa..f28563a93 100644
--- a/apt-inst/deb/dpkgdb.h
+++ b/apt-inst/deb/dpkgdb.h
@@ -22,6 +22,11 @@
 
 #include <apt-pkg/database.h>
 
+#include <string>
+
+class DynamicMMap;
+class OpProgress;
+
 class debDpkgDB : public pkgDataBase
 {
    protected:
diff --git a/apt-inst/extract.cc b/apt-inst/extract.cc
index d48ff63ac..29e163028 100644
--- a/apt-inst/extract.cc
+++ b/apt-inst/extract.cc
@@ -49,6 +49,7 @@
 #include <apt-pkg/extract.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/debversion.h>
+#include <apt-pkg/fileutl.h>
 
 #include <sys/stat.h>
 #include <stdio.h>
diff --git a/apt-inst/filelist.h b/apt-inst/filelist.h
index 69c483e71..0405d61df 100644
--- a/apt-inst/filelist.h
+++ b/apt-inst/filelist.h
@@ -28,9 +28,10 @@
 #ifndef PKGLIB_FILELIST_H
 #define PKGLIB_FILELIST_H
 
+#include <apt-pkg/mmap.h>
 
 #include <cstring>
-#include <apt-pkg/mmap.h>
+#include <string>
 
 class pkgFLCache
 {
diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc
index b46489f87..453fce109 100644
--- a/apt-pkg/acquire-item.cc
+++ b/apt-pkg/acquire-item.cc
@@ -25,6 +25,8 @@
 #include <apt-pkg/md5.h>
 #include <apt-pkg/sha1.h>
 #include <apt-pkg/tagfile.h>
+#include <apt-pkg/indexrecords.h>
+#include <apt-pkg/metaindex.h>
 
 #include <sys/stat.h>
 #include <unistd.h>
diff --git a/apt-pkg/acquire-item.h b/apt-pkg/acquire-item.h
index 13be17a01..24f848f27 100644
--- a/apt-pkg/acquire-item.h
+++ b/apt-pkg/acquire-item.h
@@ -21,13 +21,9 @@
 #define PKGLIB_ACQUIRE_ITEM_H
 
 #include <apt-pkg/acquire.h>
-#include <apt-pkg/indexfile.h>
-#include <apt-pkg/vendor.h>
-#include <apt-pkg/sourcelist.h>
-#include <apt-pkg/pkgrecords.h>
-#include <apt-pkg/indexrecords.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/weakptr.h>
+#include <apt-pkg/pkgcache.h>
 
 /** \addtogroup acquire
  *  @{
@@ -35,6 +31,10 @@
  *  \file acquire-item.h
  */
 
+class indexRecords;
+class pkgRecords;
+class pkgSourceList;
+
 /** \brief Represents the process by which a pkgAcquire object should	{{{
  *  retrieve a file or a collection of files.
  *
@@ -74,7 +74,7 @@ class pkgAcquire::Item : public WeakPointable
     *  \param To The new name of #From.  If #To exists it will be
     *  overwritten.
     */
-   void Rename(string From,string To);
+   void Rename(std::string From,std::string To);
    
    public:
 
@@ -109,7 +109,7 @@ class pkgAcquire::Item : public WeakPointable
    /** \brief Contains a textual description of the error encountered
     *  if #Status is #StatError or #StatAuthError.
     */
-   string ErrorText;
+   std::string ErrorText;
 
    /** \brief The size of the object to fetch. */
    unsigned long long FileSize;
@@ -143,7 +143,7 @@ class pkgAcquire::Item : public WeakPointable
     *  download progress indicator's overall statistics.
     */
    bool Local;
-   string UsedMirror;
+   std::string UsedMirror;
 
    /** \brief The number of fetch queues into which this item has been
     *  inserted.
@@ -158,7 +158,7 @@ class pkgAcquire::Item : public WeakPointable
    /** \brief The name of the file into which the retrieved object
     *  will be written.
     */
-   string DestFile;
+   std::string DestFile;
 
    /** \brief Invoked by the acquire worker when the object couldn't
     *  be fetched.
@@ -173,7 +173,7 @@ class pkgAcquire::Item : public WeakPointable
     *
     *  \sa pkgAcqMethod
     */
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
 
    /** \brief Invoked by the acquire worker when the object was
     *  fetched successfully.
@@ -194,7 +194,7 @@ class pkgAcquire::Item : public WeakPointable
     *
     *  \sa pkgAcqMethod
     */
-   virtual void Done(string Message,unsigned long long Size,string Hash,
+   virtual void Done(std::string Message,unsigned long long Size,std::string Hash,
 		     pkgAcquire::MethodConfig *Cnf);
 
    /** \brief Invoked when the worker starts to fetch this object.
@@ -206,7 +206,7 @@ class pkgAcquire::Item : public WeakPointable
     *
     *  \sa pkgAcqMethod
     */
-   virtual void Start(string Message,unsigned long long Size);
+   virtual void Start(std::string Message,unsigned long long Size);
 
    /** \brief Custom headers to be sent to the fetch process.
     *
@@ -216,18 +216,18 @@ class pkgAcquire::Item : public WeakPointable
     *  line, so they should (if nonempty) have a leading newline and
     *  no trailing newline.
     */
-   virtual string Custom600Headers() {return string();};
+   virtual std::string Custom600Headers() {return std::string();};
 
    /** \brief A "descriptive" URI-like string.
     *
     *  \return a URI that should be used to describe what is being fetched.
     */
-   virtual string DescURI() = 0;
+   virtual std::string DescURI() = 0;
    /** \brief Short item description.
     *
     *  \return a brief description of the object being fetched.
     */
-   virtual string ShortDesc() {return DescURI();}
+   virtual std::string ShortDesc() {return DescURI();}
 
    /** \brief Invoked by the worker when the download is completely done. */
    virtual void Finished() {};
@@ -237,7 +237,7 @@ class pkgAcquire::Item : public WeakPointable
     *  \return the HashSum of this object, if applicable; otherwise, an
     *  empty string.
     */
-   virtual string HashSum() {return string();};
+   virtual std::string HashSum() {return std::string();};
 
    /** \return the acquire process with which this item is associated. */
    pkgAcquire *GetOwner() {return Owner;};
@@ -253,7 +253,7 @@ class pkgAcquire::Item : public WeakPointable
     * 
     *  \param FailCode A short failure string that is send
     */
-   void ReportMirrorFailure(string FailCode);
+   void ReportMirrorFailure(std::string FailCode);
 
 
    /** \brief Initialize an item.
@@ -278,10 +278,10 @@ class pkgAcquire::Item : public WeakPointable
 /** \brief Information about an index patch (aka diff). */		/*{{{*/
 struct DiffInfo {
    /** The filename of the diff. */
-   string file;
+   std::string file;
 
    /** The sha1 hash of the diff. */
-   string sha1;
+   std::string sha1;
 
    /** The size of the diff. */
    unsigned long size;
@@ -308,12 +308,12 @@ class pkgAcqSubIndex : public pkgAcquire::Item
 
  public:
    // Specialized action members
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual void Done(string Message,unsigned long long Size,string Md5Hash,
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Done(std::string Message,unsigned long long Size,std::string Md5Hash,
 		     pkgAcquire::MethodConfig *Cnf);
-   virtual string DescURI() {return Desc.URI;};
-   virtual string Custom600Headers();
-   virtual bool ParseIndex(string const &IndexFile);
+   virtual std::string DescURI() {return Desc.URI;};
+   virtual std::string Custom600Headers();
+   virtual bool ParseIndex(std::string const &IndexFile);
 
    /** \brief Create a new pkgAcqSubIndex.
     *
@@ -327,8 +327,8 @@ class pkgAcqSubIndex : public pkgAcquire::Item
     *
     *  \param ExpectedHash The list file's MD5 signature.
     */
-   pkgAcqSubIndex(pkgAcquire *Owner, string const &URI,string const &URIDesc,
-		   string const &ShortDesc, HashString const &ExpectedHash);
+   pkgAcqSubIndex(pkgAcquire *Owner, std::string const &URI,std::string const &URIDesc,
+		   std::string const &ShortDesc, HashString const &ExpectedHash);
 };
 									/*}}}*/
 /** \brief An item that is responsible for fetching an index file of	{{{
@@ -352,7 +352,7 @@ class pkgAcqDiffIndex : public pkgAcquire::Item
    /** \brief The URI of the index file to recreate at our end (either
     *  by downloading it or by applying partial patches).
     */
-   string RealURI;
+   std::string RealURI;
 
    /** \brief The Hash that the real index file should have after
     *  all patches have been applied.
@@ -362,20 +362,20 @@ class pkgAcqDiffIndex : public pkgAcquire::Item
    /** \brief The index file which will be patched to generate the new
     *  file.
     */
-   string CurrentPackagesFile;
+   std::string CurrentPackagesFile;
 
    /** \brief A description of the Packages file (stored in
     *  pkgAcquire::ItemDesc::Description).
     */
-   string Description;
+   std::string Description;
 
  public:
    // Specialized action members
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual void Done(string Message,unsigned long long Size,string Md5Hash,
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Done(std::string Message,unsigned long long Size,std::string Md5Hash,
 		     pkgAcquire::MethodConfig *Cnf);
-   virtual string DescURI() {return RealURI + "Index";};
-   virtual string Custom600Headers();
+   virtual std::string DescURI() {return RealURI + "Index";};
+   virtual std::string Custom600Headers();
 
    /** \brief Parse the Index file for a set of Packages diffs.
     *
@@ -387,7 +387,7 @@ class pkgAcqDiffIndex : public pkgAcquire::Item
     *  \return \b true if the Index file was successfully parsed, \b
     *  false otherwise.
     */
-   bool ParseDiffIndex(string IndexDiffFile);
+   bool ParseDiffIndex(std::string IndexDiffFile);
    
 
    /** \brief Create a new pkgAcqDiffIndex.
@@ -402,8 +402,8 @@ class pkgAcqDiffIndex : public pkgAcquire::Item
     *
     *  \param ExpectedHash The list file's MD5 signature.
     */
-   pkgAcqDiffIndex(pkgAcquire *Owner,string URI,string URIDesc,
-		   string ShortDesc, HashString ExpectedHash);
+   pkgAcqDiffIndex(pkgAcquire *Owner,std::string URI,std::string URIDesc,
+		   std::string ShortDesc, HashString ExpectedHash);
 };
 									/*}}}*/
 /** \brief An item that is responsible for fetching all the patches	{{{
@@ -460,7 +460,7 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item
    /** \brief The URI of the package index file that is being
     *  reconstructed.
     */
-   string RealURI;
+   std::string RealURI;
 
    /** \brief The HashSum of the package index file that is being
     *  reconstructed.
@@ -468,7 +468,7 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item
    HashString ExpectedHash;
 
    /** A description of the file being downloaded. */
-   string Description;
+   std::string Description;
 
    /** The patches that remain to be downloaded, including the patch
     *  being downloaded right now.  This list should be ordered so
@@ -478,10 +478,10 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item
     *  dictionary instead of relying on ordering and stripping them
     *  off the front?
     */
-   vector<DiffInfo> available_patches;
+   std::vector<DiffInfo> available_patches;
 
    /** Stop applying patches when reaching that sha1 */
-   string ServerSha1;
+   std::string ServerSha1;
 
    /** The current status of this patch. */
    enum DiffState
@@ -506,11 +506,11 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item
     *  This method will fall back to downloading the whole index file
     *  outright; its arguments are ignored.
     */
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
 
-   virtual void Done(string Message,unsigned long long Size,string Md5Hash,
+   virtual void Done(std::string Message,unsigned long long Size,std::string Md5Hash,
 		     pkgAcquire::MethodConfig *Cnf);
-   virtual string DescURI() {return RealURI + "Index";};
+   virtual std::string DescURI() {return RealURI + "Index";};
 
    /** \brief Create an index diff item.
     *
@@ -534,10 +534,10 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item
     *  should be ordered so that each diff appears before any diff
     *  that depends on it.
     */
-   pkgAcqIndexDiffs(pkgAcquire *Owner,string URI,string URIDesc,
-		    string ShortDesc, HashString ExpectedHash,
-		    string ServerSha1,
-		    vector<DiffInfo> diffs=vector<DiffInfo>());
+   pkgAcqIndexDiffs(pkgAcquire *Owner,std::string URI,std::string URIDesc,
+		    std::string ShortDesc, HashString ExpectedHash,
+		    std::string ServerSha1,
+		    std::vector<DiffInfo> diffs=std::vector<DiffInfo>());
 };
 									/*}}}*/
 /** \brief An acquire item that is responsible for fetching an index	{{{
@@ -577,7 +577,7 @@ class pkgAcqIndex : public pkgAcquire::Item
    /** \brief The object that is actually being fetched (minus any
     *  compression-related extensions).
     */
-   string RealURI;
+   std::string RealURI;
 
    /** \brief The expected hashsum of the decompressed index file. */
    HashString ExpectedHash;
@@ -585,17 +585,17 @@ class pkgAcqIndex : public pkgAcquire::Item
    /** \brief The compression-related file extensions that are being
     *  added to the downloaded file one by one if first fails (e.g., "gz bz2").
     */
-   string CompressionExtension;
+   std::string CompressionExtension;
 
    public:
    
    // Specialized action members
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual void Done(string Message,unsigned long long Size,string Md5Hash,
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Done(std::string Message,unsigned long long Size,std::string Md5Hash,
 		     pkgAcquire::MethodConfig *Cnf);
-   virtual string Custom600Headers();
-   virtual string DescURI() {return Desc.URI;};
-   virtual string HashSum() {return ExpectedHash.toStr(); };
+   virtual std::string Custom600Headers();
+   virtual std::string DescURI() {return Desc.URI;};
+   virtual std::string HashSum() {return ExpectedHash.toStr(); };
 
    /** \brief Create a pkgAcqIndex.
     *
@@ -616,12 +616,12 @@ class pkgAcqIndex : public pkgAcquire::Item
     *  default is ".lzma" or ".bz2" (if the needed binaries are present)
     *  fallback is ".gz" or none.
     */
-   pkgAcqIndex(pkgAcquire *Owner,string URI,string URIDesc,
-	       string ShortDesc, HashString ExpectedHash, 
-	       string compressExt="");
+   pkgAcqIndex(pkgAcquire *Owner,std::string URI,std::string URIDesc,
+	       std::string ShortDesc, HashString ExpectedHash, 
+	       std::string compressExt="");
    pkgAcqIndex(pkgAcquire *Owner, struct IndexTarget const * const Target,
 			 HashString const &ExpectedHash, indexRecords const *MetaIndexParser);
-   void Init(string const &URI, string const &URIDesc, string const &ShortDesc);
+   void Init(std::string const &URI, std::string const &URIDesc, std::string const &ShortDesc);
 };
 									/*}}}*/
 /** \brief An acquire item that is responsible for fetching a		{{{
@@ -635,8 +635,8 @@ class pkgAcqIndexTrans : public pkgAcqIndex
 {
    public:
   
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual string Custom600Headers();
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual std::string Custom600Headers();
 
    /** \brief Create a pkgAcqIndexTrans.
     *
@@ -649,8 +649,8 @@ class pkgAcqIndexTrans : public pkgAcqIndex
     *
     *  \param ShortDesc A brief description of this index file.
     */
-   pkgAcqIndexTrans(pkgAcquire *Owner,string URI,string URIDesc,
-		    string ShortDesc);
+   pkgAcqIndexTrans(pkgAcquire *Owner,std::string URI,std::string URIDesc,
+		    std::string ShortDesc);
    pkgAcqIndexTrans(pkgAcquire *Owner, struct IndexTarget const * const Target,
 		    HashString const &ExpectedHash, indexRecords const *MetaIndexParser);
 };
@@ -660,18 +660,18 @@ class IndexTarget
 {
  public:
    /** \brief A URI from which the index file can be downloaded. */
-   string URI;
+   std::string URI;
 
    /** \brief A description of the index file. */
-   string Description;
+   std::string Description;
 
    /** \brief A shorter description of the index file. */
-   string ShortDesc;
+   std::string ShortDesc;
 
    /** \brief The key by which this index file should be
     *  looked up within the meta signature file.
     */
-   string MetaKey;
+   std::string MetaKey;
 
    virtual bool IsOptional() const {
       return false;
@@ -710,7 +710,7 @@ class pkgAcqMetaSig : public pkgAcquire::Item
 {
    protected:
    /** \brief The last good signature file */
-   string LastGoodSig;
+   std::string LastGoodSig;
 
    /** \brief The fetch request that is currently being processed. */
    pkgAcquire::ItemDesc Desc;
@@ -719,20 +719,20 @@ class pkgAcqMetaSig : public pkgAcquire::Item
     *  never modified; it is used to determine the file that is being
     *  downloaded.
     */
-   string RealURI;
+   std::string RealURI;
 
    /** \brief The URI of the meta-index file to be fetched after the signature. */
-   string MetaIndexURI;
+   std::string MetaIndexURI;
 
    /** \brief A "URI-style" description of the meta-index file to be
     *  fetched after the signature.
     */
-   string MetaIndexURIDesc;
+   std::string MetaIndexURIDesc;
 
    /** \brief A brief description of the meta-index file to be fetched
     *  after the signature.
     */
-   string MetaIndexShortDesc;
+   std::string MetaIndexShortDesc;
 
    /** \brief A package-system-specific parser for the meta-index file. */
    indexRecords* MetaIndexParser;
@@ -742,21 +742,21 @@ class pkgAcqMetaSig : public pkgAcquire::Item
     *
     *  \todo Why a list of pointers instead of a list of structs?
     */
-   const vector<struct IndexTarget*>* IndexTargets;
+   const std::vector<struct IndexTarget*>* IndexTargets;
 
    public:
    
    // Specialized action members
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual void Done(string Message,unsigned long long Size,string Md5Hash,
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Done(std::string Message,unsigned long long Size,std::string Md5Hash,
 		     pkgAcquire::MethodConfig *Cnf);
-   virtual string Custom600Headers();
-   virtual string DescURI() {return RealURI; };
+   virtual std::string Custom600Headers();
+   virtual std::string DescURI() {return RealURI; };
 
    /** \brief Create a new pkgAcqMetaSig. */
-   pkgAcqMetaSig(pkgAcquire *Owner,string URI,string URIDesc, string ShortDesc,
-		 string MetaIndexURI, string MetaIndexURIDesc, string MetaIndexShortDesc,
-		 const vector<struct IndexTarget*>* IndexTargets,
+   pkgAcqMetaSig(pkgAcquire *Owner,std::string URI,std::string URIDesc, std::string ShortDesc,
+		 std::string MetaIndexURI, std::string MetaIndexURIDesc, std::string MetaIndexShortDesc,
+		 const std::vector<struct IndexTarget*>* IndexTargets,
 		 indexRecords* MetaIndexParser);
 };
 									/*}}}*/
@@ -779,17 +779,17 @@ class pkgAcqMetaIndex : public pkgAcquire::Item
    /** \brief The URI that is actually being downloaded; never
     *  modified by pkgAcqMetaIndex.
     */
-   string RealURI;
+   std::string RealURI;
 
    /** \brief The file in which the signature for this index was stored.
     *
     *  If empty, the signature and the md5sums of the individual
     *  indices will not be checked.
     */
-   string SigFile;
+   std::string SigFile;
 
    /** \brief The index files to download. */
-   const vector<struct IndexTarget*>* IndexTargets;
+   const std::vector<struct IndexTarget*>* IndexTargets;
 
    /** \brief The parser for the meta-index file. */
    indexRecords* MetaIndexParser;
@@ -805,7 +805,7 @@ class pkgAcqMetaIndex : public pkgAcquire::Item
     *
     *  \return \b true if no fatal errors were encountered.
     */
-   bool VerifyVendor(string Message);
+   bool VerifyVendor(std::string Message);
 
    /** \brief Called when a file is finished being retrieved.
     *
@@ -816,7 +816,7 @@ class pkgAcqMetaIndex : public pkgAcquire::Item
     *  \param Message The message block received from the fetch
     *  subprocess.
     */
-   void RetrievalDone(string Message);
+   void RetrievalDone(std::string Message);
 
    /** \brief Called when authentication succeeded.
     *
@@ -827,7 +827,7 @@ class pkgAcqMetaIndex : public pkgAcquire::Item
     *  \param Message The message block received from the fetch
     *  subprocess.
     */
-   void AuthDone(string Message);
+   void AuthDone(std::string Message);
 
    /** \brief Starts downloading the individual index files.
     *
@@ -842,17 +842,17 @@ class pkgAcqMetaIndex : public pkgAcquire::Item
    public:
    
    // Specialized action members
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual void Done(string Message,unsigned long long Size, string Hash,
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Done(std::string Message,unsigned long long Size, std::string Hash,
 		     pkgAcquire::MethodConfig *Cnf);
-   virtual string Custom600Headers();
-   virtual string DescURI() {return RealURI; };
+   virtual std::string Custom600Headers();
+   virtual std::string DescURI() {return RealURI; };
 
    /** \brief Create a new pkgAcqMetaIndex. */
    pkgAcqMetaIndex(pkgAcquire *Owner,
-		   string URI,string URIDesc, string ShortDesc,
-		   string SigFile,
-		   const vector<struct IndexTarget*>* IndexTargets,
+		   std::string URI,std::string URIDesc, std::string ShortDesc,
+		   std::string SigFile,
+		   const std::vector<struct IndexTarget*>* IndexTargets,
 		   indexRecords* MetaIndexParser);
 };
 									/*}}}*/
@@ -860,33 +860,33 @@ class pkgAcqMetaIndex : public pkgAcquire::Item
 class pkgAcqMetaClearSig : public pkgAcqMetaIndex
 {
    /** \brief The URI of the meta-index file for the detached signature */
-   string MetaIndexURI;
+   std::string MetaIndexURI;
 
    /** \brief A "URI-style" description of the meta-index file */
-   string MetaIndexURIDesc;
+   std::string MetaIndexURIDesc;
 
    /** \brief A brief description of the meta-index file */
-   string MetaIndexShortDesc;
+   std::string MetaIndexShortDesc;
 
    /** \brief The URI of the detached meta-signature file if the clearsigned one failed. */
-   string MetaSigURI;
+   std::string MetaSigURI;
 
    /** \brief A "URI-style" description of the meta-signature file */
-   string MetaSigURIDesc;
+   std::string MetaSigURIDesc;
 
    /** \brief A brief description of the meta-signature file */
-   string MetaSigShortDesc;
+   std::string MetaSigShortDesc;
 
 public:
-   void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual string Custom600Headers();
+   void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual std::string Custom600Headers();
 
    /** \brief Create a new pkgAcqMetaClearSig. */
    pkgAcqMetaClearSig(pkgAcquire *Owner,
-		string const &URI, string const &URIDesc, string const &ShortDesc,
-		string const &MetaIndexURI, string const &MetaIndexURIDesc, string const &MetaIndexShortDesc,
-		string const &MetaSigURI, string const &MetaSigURIDesc, string const &MetaSigShortDesc,
-		const vector<struct IndexTarget*>* IndexTargets,
+		std::string const &URI, std::string const &URIDesc, std::string const &ShortDesc,
+		std::string const &MetaIndexURI, std::string const &MetaIndexURIDesc, std::string const &MetaIndexShortDesc,
+		std::string const &MetaSigURI, std::string const &MetaSigURIDesc, std::string const &MetaSigShortDesc,
+		const std::vector<struct IndexTarget*>* IndexTargets,
 		indexRecords* MetaIndexParser);
 };
 									/*}}}*/
@@ -920,7 +920,7 @@ class pkgAcqArchive : public pkgAcquire::Item
    /** \brief A location in which the actual filename of the package
     *  should be stored.
     */
-   string &StoreFilename;
+   std::string &StoreFilename;
 
    /** \brief The next file for this version to try to download. */
    pkgCache::VerFileIterator Vf;
@@ -942,13 +942,13 @@ class pkgAcqArchive : public pkgAcquire::Item
    
    public:
    
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual void Done(string Message,unsigned long long Size,string Hash,
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Done(std::string Message,unsigned long long Size,std::string Hash,
 		     pkgAcquire::MethodConfig *Cnf);
-   virtual string DescURI() {return Desc.URI;};
-   virtual string ShortDesc() {return Desc.ShortDesc;};
+   virtual std::string DescURI() {return Desc.URI;};
+   virtual std::string ShortDesc() {return Desc.ShortDesc;};
    virtual void Finished();
-   virtual string HashSum() {return ExpectedHash.toStr(); };
+   virtual std::string HashSum() {return ExpectedHash.toStr(); };
    virtual bool IsTrusted();
    
    /** \brief Create a new pkgAcqArchive.
@@ -971,7 +971,7 @@ class pkgAcqArchive : public pkgAcquire::Item
     */
    pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources,
 		 pkgRecords *Recs,pkgCache::VerIterator const &Version,
-		 string &StoreFilename);
+		 std::string &StoreFilename);
 };
 									/*}}}*/
 /** \brief Retrieve an arbitrary file to the current directory.		{{{
@@ -999,12 +999,12 @@ class pkgAcqFile : public pkgAcquire::Item
    public:
    
    // Specialized action members
-   virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
-   virtual void Done(string Message,unsigned long long Size,string CalcHash,
+   virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual void Done(std::string Message,unsigned long long Size,std::string CalcHash,
 		     pkgAcquire::MethodConfig *Cnf);
-   virtual string DescURI() {return Desc.URI;};
-   virtual string HashSum() {return ExpectedHash.toStr(); };
-   virtual string Custom600Headers();
+   virtual std::string DescURI() {return Desc.URI;};
+   virtual std::string HashSum() {return ExpectedHash.toStr(); };
+   virtual std::string Custom600Headers();
 
    /** \brief Create a new pkgAcqFile object.
     *
@@ -1037,9 +1037,9 @@ class pkgAcqFile : public pkgAcquire::Item
     * is the absolute name to which the file should be downloaded.
     */
 
-   pkgAcqFile(pkgAcquire *Owner, string URI, string Hash, unsigned long long Size,
-	      string Desc, string ShortDesc,
-	      const string &DestDir="", const string &DestFilename="",
+   pkgAcqFile(pkgAcquire *Owner, std::string URI, std::string Hash, unsigned long long Size,
+	      std::string Desc, std::string ShortDesc,
+	      const std::string &DestDir="", const std::string &DestFilename="",
 	      bool IsIndexFile=false);
 };
 									/*}}}*/
diff --git a/apt-pkg/acquire-method.h b/apt-pkg/acquire-method.h
index 8acec82ed..c3f042ee0 100644
--- a/apt-pkg/acquire-method.h
+++ b/apt-pkg/acquire-method.h
@@ -20,11 +20,11 @@
 #ifndef PKGLIB_ACQUIRE_METHOD_H
 #define PKGLIB_ACQUIRE_METHOD_H
 
-#include <apt-pkg/configuration.h>
-#include <apt-pkg/strutl.h>
-
 #include <stdarg.h>
 
+#include <string>
+#include <vector>
+
 class Hashes;
 class pkgAcqMethod
 {
diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index 40368c91f..919daefef 100644
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -23,6 +23,9 @@
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/edsp.h>
+#include <apt-pkg/sourcelist.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/progress.h>
 
 #include <sys/types.h>
 #include <cstdlib>
diff --git a/apt-pkg/algorithms.h b/apt-pkg/algorithms.h
index f299f8189..948fe1103 100644
--- a/apt-pkg/algorithms.h
+++ b/apt-pkg/algorithms.h
@@ -33,10 +33,11 @@
 
 #include <apt-pkg/packagemanager.h>
 #include <apt-pkg/depcache.h>
-#include <apt-pkg/acquire.h>
 
 #include <iostream>
 
+class pkgAcquireStatus;
+
 class pkgSimulate : public pkgPackageManager				/*{{{*/
 {
    protected:
diff --git a/apt-pkg/cachefile.cc b/apt-pkg/cachefile.cc
index f38dfc581..1b8d91a44 100644
--- a/apt-pkg/cachefile.cc
+++ b/apt-pkg/cachefile.cc
@@ -23,6 +23,7 @@
 #include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/progress.h>
 
 #include <apti18n.h>
 									/*}}}*/
diff --git a/apt-pkg/cachefile.h b/apt-pkg/cachefile.h
index 243061f0f..b56e42855 100644
--- a/apt-pkg/cachefile.h
+++ b/apt-pkg/cachefile.h
@@ -17,11 +17,12 @@
 #ifndef PKGLIB_CACHEFILE_H
 #define PKGLIB_CACHEFILE_H
 
-
 #include <apt-pkg/depcache.h>
-#include <apt-pkg/acquire.h>
-#include <apt-pkg/policy.h>
-#include <apt-pkg/sourcelist.h>
+#include <apt-pkg/macros.h>
+
+class pkgPolicy;
+class pkgSourceList;
+class OpProgress;
 
 class pkgCacheFile
 {
diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index 464b2fdd8..5382f3838 100644
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -32,6 +32,7 @@
 #include<iterator>
 
 #include<string.h>
+
 // abstract Iterator template						/*{{{*/
 /* This template provides the very basic iterator methods we
    need to have for doing some walk-over-the-cache magic */
diff --git a/apt-pkg/cacheset.cc b/apt-pkg/cacheset.cc
index 386ecfb5f..6b95eab70 100644
--- a/apt-pkg/cacheset.cc
+++ b/apt-pkg/cacheset.cc
@@ -12,11 +12,14 @@
 #include <config.h>
 
 #include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/cachefile.h>
 #include <apt-pkg/cachefilter.h>
 #include <apt-pkg/cacheset.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/versionmatch.h>
+#include <apt-pkg/pkgrecords.h>
+#include <apt-pkg/policy.h>
 
 #include <vector>
 
@@ -298,7 +301,7 @@ APT::VersionSet VersionSet::FromString(pkgCacheFile &Cache, std::string pkg,
 	std::string ver;
 	bool verIsRel = false;
 	size_t const vertag = pkg.find_last_of("/=");
-	if (vertag != string::npos) {
+	if (vertag != std::string::npos) {
 		ver = pkg.substr(vertag+1);
 		verIsRel = (pkg[vertag] == '/');
 		pkg.erase(vertag);
@@ -316,7 +319,7 @@ APT::VersionSet VersionSet::FromString(pkgCacheFile &Cache, std::string pkg,
 		errors = helper.showErrors(false);
 	for (PackageSet::const_iterator P = pkgset.begin();
 	     P != pkgset.end(); ++P) {
-		if (vertag == string::npos) {
+		if (vertag == std::string::npos) {
 			verset.insert(VersionSet::FromPackage(Cache, P, fallback, helper));
 			continue;
 		}
diff --git a/apt-pkg/cacheset.h b/apt-pkg/cacheset.h
index 061d0a2f4..3b1118bdc 100644
--- a/apt-pkg/cacheset.h
+++ b/apt-pkg/cacheset.h
@@ -16,9 +16,12 @@
 #include <set>
 #include <string>
 
-#include <apt-pkg/cachefile.h>
+#include <apt-pkg/error.h>
 #include <apt-pkg/pkgcache.h>
 									/*}}}*/
+
+class pkgCacheFile;
+
 namespace APT {
 class PackageSet;
 class VersionSet;
@@ -37,10 +40,10 @@ public:									/*{{{*/
 			ShowError(ShowError), ErrorType(ErrorType) {};
 	virtual ~CacheSetHelper() {};
 
-	virtual void showTaskSelection(PackageSet const &pkgset, string const &pattern) {};
-	virtual void showRegExSelection(PackageSet const &pkgset, string const &pattern) {};
+	virtual void showTaskSelection(PackageSet const &pkgset, std::string const &pattern) {};
+	virtual void showRegExSelection(PackageSet const &pkgset, std::string const &pattern) {};
 	virtual void showSelectedVersion(pkgCache::PkgIterator const &Pkg, pkgCache::VerIterator const Ver,
-				 string const &ver, bool const &verIsRel) {};
+				 std::string const &ver, bool const &verIsRel) {};
 
 	virtual pkgCache::PkgIterator canNotFindPkgName(pkgCacheFile &Cache, std::string const &str);
 	virtual PackageSet canNotFindTask(pkgCacheFile &Cache, std::string pattern);
@@ -265,7 +268,7 @@ public:									/*{{{*/
 		inline pkgCache::VerFileIterator FileList() const { return (**this).FileList(); };
 		inline bool Downloadable() const { return (**this).Downloadable(); };
 		inline const char *PriorityType() const { return (**this).PriorityType(); };
-		inline string RelStr() const { return (**this).RelStr(); };
+		inline std::string RelStr() const { return (**this).RelStr(); };
 		inline bool Automatic() const { return (**this).Automatic(); };
 		inline pkgCache::VerFileIterator NewestFile() const { return (**this).NewestFile(); };
 	};
diff --git a/apt-pkg/cdrom.cc b/apt-pkg/cdrom.cc
index 392cd890e..a9c63fd21 100644
--- a/apt-pkg/cdrom.cc
+++ b/apt-pkg/cdrom.cc
@@ -8,6 +8,8 @@
 #include<apt-pkg/strutl.h>
 #include<apt-pkg/cdrom.h>
 #include<apt-pkg/aptconfiguration.h>
+#include<apt-pkg/configuration.h>
+#include<apt-pkg/fileutl.h>
 
 #include<sstream>
 #include<fstream>
diff --git a/apt-pkg/cdrom.h b/apt-pkg/cdrom.h
index 2241f1eba..319254fd0 100644
--- a/apt-pkg/cdrom.h
+++ b/apt-pkg/cdrom.h
@@ -1,10 +1,11 @@
 #ifndef PKGLIB_CDROM_H
 #define PKGLIB_CDROM_H
 
-#include<apt-pkg/init.h>
 #include<string>
 #include<vector>
 
+class Configuration;
+class OpProgress;
 
 class pkgCdromStatus							/*{{{*/
 {
diff --git a/apt-pkg/clean.cc b/apt-pkg/clean.cc
index f5a939968..ed8fa1aa9 100644
--- a/apt-pkg/clean.cc
+++ b/apt-pkg/clean.cc
@@ -15,6 +15,7 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/fileutl.h>
 
 #include <dirent.h>
 #include <sys/stat.h>
diff --git a/apt-pkg/contrib/cmndline.cc b/apt-pkg/contrib/cmndline.cc
index 34e90da20..997f26bc7 100644
--- a/apt-pkg/contrib/cmndline.cc
+++ b/apt-pkg/contrib/cmndline.cc
@@ -13,6 +13,7 @@
 // Include files							/*{{{*/
 #include<config.h>
 
+#include <apt-pkg/configuration.h>
 #include <apt-pkg/cmndline.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
diff --git a/apt-pkg/contrib/cmndline.h b/apt-pkg/contrib/cmndline.h
index 7c0c71aa7..b201d9855 100644
--- a/apt-pkg/contrib/cmndline.h
+++ b/apt-pkg/contrib/cmndline.h
@@ -44,9 +44,7 @@
 #ifndef PKGLIB_CMNDLINE_H
 #define PKGLIB_CMNDLINE_H
 
-
-
-#include <apt-pkg/configuration.h>
+class Configuration;
 
 class CommandLine
 {
diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index a110a7019..f76169a92 100644
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -21,6 +21,7 @@
 
 #include <apt-pkg/mmap.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
 
 #include <sys/mman.h>
 #include <sys/stat.h>
diff --git a/apt-pkg/contrib/mmap.h b/apt-pkg/contrib/mmap.h
index 387e9a170..2ed4a95f8 100644
--- a/apt-pkg/contrib/mmap.h
+++ b/apt-pkg/contrib/mmap.h
@@ -27,7 +27,8 @@
 
 
 #include <string>
-#include <apt-pkg/fileutl.h>
+
+class FileFd;
 
 /* This should be a 32 bit type, larger tyes use too much ram and smaller
    types are too small. Where ever possible 'unsigned long' should be used
diff --git a/apt-pkg/contrib/netrc.cc b/apt-pkg/contrib/netrc.cc
index 9aa1376dc..cb7d36088 100644
--- a/apt-pkg/contrib/netrc.cc
+++ b/apt-pkg/contrib/netrc.cc
@@ -14,7 +14,9 @@
 #include <config.h>
 
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/strutl.h>
 #include <apt-pkg/fileutl.h>
+
 #include <iostream>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/apt-pkg/contrib/netrc.h b/apt-pkg/contrib/netrc.h
index 86afa43d1..7b94eba88 100644
--- a/apt-pkg/contrib/netrc.h
+++ b/apt-pkg/contrib/netrc.h
@@ -14,11 +14,13 @@
 #ifndef NETRC_H
 #define NETRC_H
 
-#include <apt-pkg/strutl.h>
+#include <string>
 
 #define DOT_CHAR "."
 #define DIR_CHAR "/"
 
+class URI;
+
 // Assume: password[0]=0, host[0] != 0.
 // If login[0] = 0, search for login and password within a machine section
 // in the netrc.
diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc
index 95a2e6d47..3652f9e8b 100644
--- a/apt-pkg/deb/deblistparser.cc
+++ b/apt-pkg/deb/deblistparser.cc
@@ -17,6 +17,7 @@
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/crc-16.h>
 #include <apt-pkg/md5.h>
 #include <apt-pkg/macros.h>
diff --git a/apt-pkg/deb/deblistparser.h b/apt-pkg/deb/deblistparser.h
index 09858d991..9519d9711 100644
--- a/apt-pkg/deb/deblistparser.h
+++ b/apt-pkg/deb/deblistparser.h
@@ -12,7 +12,6 @@
 #define PKGLIB_DEBLISTPARSER_H
 
 #include <apt-pkg/pkgcachegen.h>
-#include <apt-pkg/indexfile.h>
 #include <apt-pkg/tagfile.h>
 
 class debListParser : public pkgCacheGenerator::ListParser
diff --git a/apt-pkg/deb/debmetaindex.cc b/apt-pkg/deb/debmetaindex.cc
index 1d3754b00..0d07725eb 100644
--- a/apt-pkg/deb/debmetaindex.cc
+++ b/apt-pkg/deb/debmetaindex.cc
@@ -4,9 +4,12 @@
 #include <apt-pkg/debmetaindex.h>
 #include <apt-pkg/debindexfile.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/indexrecords.h>
+#include <apt-pkg/sourcelist.h>
 #include <apt-pkg/error.h>
 
 #include <set>
diff --git a/apt-pkg/deb/debmetaindex.h b/apt-pkg/deb/debmetaindex.h
index 695cfa7cc..0cba2d8a8 100644
--- a/apt-pkg/deb/debmetaindex.h
+++ b/apt-pkg/deb/debmetaindex.h
@@ -3,9 +3,10 @@
 #define PKGLIB_DEBMETAINDEX_H
 
 #include <apt-pkg/metaindex.h>
-#include <apt-pkg/sourcelist.h>
 
 #include <map>
+#include <string>
+#include <vector>
 
 class debReleaseIndex : public metaIndex {
    public:
@@ -13,43 +14,43 @@ class debReleaseIndex : public metaIndex {
    class debSectionEntry
    {
       public:
-      debSectionEntry (string const &Section, bool const &IsSrc);
-      string const Section;
+      debSectionEntry (std::string const &Section, bool const &IsSrc);
+      std::string const Section;
       bool const IsSrc;
    };
 
    private:
    /** \brief dpointer placeholder (for later in case we need it) */
    void *d;
-   std::map<string, vector<debSectionEntry const*> > ArchEntries;
+   std::map<std::string, std::vector<debSectionEntry const*> > ArchEntries;
    enum { ALWAYS_TRUSTED, NEVER_TRUSTED, CHECK_TRUST } Trusted;
 
    public:
 
-   debReleaseIndex(string const &URI, string const &Dist);
-   debReleaseIndex(string const &URI, string const &Dist, bool const Trusted);
+   debReleaseIndex(std::string const &URI, std::string const &Dist);
+   debReleaseIndex(std::string const &URI, std::string const &Dist, bool const Trusted);
    virtual ~debReleaseIndex();
 
-   virtual string ArchiveURI(string const &File) const {return URI + File;};
+   virtual std::string ArchiveURI(std::string const &File) const {return URI + File;};
    virtual bool GetIndexes(pkgAcquire *Owner, bool const &GetAll=false) const;
-   vector <struct IndexTarget *>* ComputeIndexTargets() const;
-   string Info(const char *Type, string const &Section, string const &Arch="") const;
-   string MetaIndexInfo(const char *Type) const;
-   string MetaIndexFile(const char *Types) const;
-   string MetaIndexURI(const char *Type) const;
-   string IndexURI(const char *Type, string const &Section, string const &Arch="native") const;
-   string IndexURISuffix(const char *Type, string const &Section, string const &Arch="native") const;
-   string SourceIndexURI(const char *Type, const string &Section) const;
-   string SourceIndexURISuffix(const char *Type, const string &Section) const;
-   string TranslationIndexURI(const char *Type, const string &Section) const;
-   string TranslationIndexURISuffix(const char *Type, const string &Section) const;
-   virtual vector <pkgIndexFile *> *GetIndexFiles();
+   std::vector <struct IndexTarget *>* ComputeIndexTargets() const;
+   std::string Info(const char *Type, std::string const &Section, std::string const &Arch="") const;
+   std::string MetaIndexInfo(const char *Type) const;
+   std::string MetaIndexFile(const char *Types) const;
+   std::string MetaIndexURI(const char *Type) const;
+   std::string IndexURI(const char *Type, std::string const &Section, std::string const &Arch="native") const;
+   std::string IndexURISuffix(const char *Type, std::string const &Section, std::string const &Arch="native") const;
+   std::string SourceIndexURI(const char *Type, const std::string &Section) const;
+   std::string SourceIndexURISuffix(const char *Type, const std::string &Section) const;
+   std::string TranslationIndexURI(const char *Type, const std::string &Section) const;
+   std::string TranslationIndexURISuffix(const char *Type, const std::string &Section) const;
+   virtual std::vector <pkgIndexFile *> *GetIndexFiles();
 
    void SetTrusted(bool const Trusted);
    virtual bool IsTrusted() const;
 
-   void PushSectionEntry(vector<string> const &Archs, const debSectionEntry *Entry);
-   void PushSectionEntry(string const &Arch, const debSectionEntry *Entry);
+   void PushSectionEntry(std::vector<std::string> const &Archs, const debSectionEntry *Entry);
+   void PushSectionEntry(std::string const &Arch, const debSectionEntry *Entry);
    void PushSectionEntry(const debSectionEntry *Entry);
 };
 
diff --git a/apt-pkg/deb/debrecords.cc b/apt-pkg/deb/debrecords.cc
index ef6a7ca9d..1afa7b74d 100644
--- a/apt-pkg/deb/debrecords.cc
+++ b/apt-pkg/deb/debrecords.cc
@@ -14,6 +14,8 @@
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/fileutl.h>
+
 #include <langinfo.h>
 									/*}}}*/
 
diff --git a/apt-pkg/deb/debrecords.h b/apt-pkg/deb/debrecords.h
index b75726859..9c7ea6b48 100644
--- a/apt-pkg/deb/debrecords.h
+++ b/apt-pkg/deb/debrecords.h
@@ -15,8 +15,8 @@
 #define PKGLIB_DEBRECORDS_H
 
 #include <apt-pkg/pkgrecords.h>
-#include <apt-pkg/indexfile.h>
 #include <apt-pkg/tagfile.h>
+#include <apt-pkg/fileutl.h>
 
 class debRecordParser : public pkgRecords::Parser
 {
diff --git a/apt-pkg/deb/debsystem.h b/apt-pkg/deb/debsystem.h
index 232155256..855123516 100644
--- a/apt-pkg/deb/debsystem.h
+++ b/apt-pkg/deb/debsystem.h
@@ -11,10 +11,12 @@
 #define PKGLIB_DEBSYSTEM_H
 
 #include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/pkgcache.h>
 
 class debSystemPrivate;
-
 class debStatusIndex;
+class pkgDepCache;
+
 class debSystem : public pkgSystem
 {
    // private d-pointer
diff --git a/apt-pkg/depcache.cc b/apt-pkg/depcache.cc
index 529085b4a..529e9240d 100644
--- a/apt-pkg/depcache.cc
+++ b/apt-pkg/depcache.cc
@@ -16,13 +16,13 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/algorithms.h>
-
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/tagfile.h>
+#include <apt-pkg/progress.h>
 
 #include <iostream>
 #include <sstream>
diff --git a/apt-pkg/depcache.h b/apt-pkg/depcache.h
index 5798f0362..f6e6c0afc 100644
--- a/apt-pkg/depcache.h
+++ b/apt-pkg/depcache.h
@@ -40,12 +40,13 @@
 
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/pkgcache.h>
-#include <apt-pkg/progress.h>
-#include <apt-pkg/error.h>
 
 #include <vector>
 #include <memory>
 #include <set>
+#include <list>
+
+class OpProgress;
 
 class pkgDepCache : protected pkgCache::Namespace
 {
diff --git a/apt-pkg/edsp.cc b/apt-pkg/edsp.cc
index 44f7dbfd6..137398100 100644
--- a/apt-pkg/edsp.cc
+++ b/apt-pkg/edsp.cc
@@ -9,17 +9,24 @@
 
 #include <apt-pkg/edsp.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/cacheset.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/policy.h>
 #include <apt-pkg/tagfile.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/progress.h>
 
 #include <limits>
 #include <stdio.h>
 
+#include <string>
+
 #include <apti18n.h>
 									/*}}}*/
 
+using std::string;
+
 // we could use pkgCache::DepType and ::Priority, but these would be localized strings…
 const char * const EDSP::PrioMap[] = {0, "important", "required", "standard",
 				      "optional", "extra"};
diff --git a/apt-pkg/edsp.h b/apt-pkg/edsp.h
index 743c3f5d1..c14309422 100644
--- a/apt-pkg/edsp.h
+++ b/apt-pkg/edsp.h
@@ -9,12 +9,17 @@
 #ifndef PKGLIB_EDSP_H
 #define PKGLIB_EDSP_H
 
-#include <apt-pkg/depcache.h>
-#include <apt-pkg/cacheset.h>
-#include <apt-pkg/progress.h>
+#include <apt-pkg/pkgcache.h>
 
+#include <list>
 #include <string>
 
+namespace APT {
+	class PackageSet;
+};
+class pkgDepCache;
+class OpProgress;
+
 class EDSP								/*{{{*/
 {
 	// we could use pkgCache::DepType and ::Priority, but these would be localized strings…
diff --git a/apt-pkg/edsp/edspindexfile.cc b/apt-pkg/edsp/edspindexfile.cc
index b417a7562..058cef636 100644
--- a/apt-pkg/edsp/edspindexfile.cc
+++ b/apt-pkg/edsp/edspindexfile.cc
@@ -15,6 +15,7 @@
 #include <apt-pkg/progress.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/acquire-item.h>
 
 #include <sys/stat.h>
diff --git a/apt-pkg/edsp/edspindexfile.h b/apt-pkg/edsp/edspindexfile.h
index 58a7f62a9..9670c4837 100644
--- a/apt-pkg/edsp/edspindexfile.h
+++ b/apt-pkg/edsp/edspindexfile.h
@@ -8,7 +8,6 @@
 #ifndef PKGLIB_EDSPINDEXFILE_H
 #define PKGLIB_EDSPINDEXFILE_H
 
-#include <apt-pkg/indexfile.h>
 #include <apt-pkg/debindexfile.h>
 
 class edspIndex : public debStatusIndex
diff --git a/apt-pkg/edsp/edsplistparser.h b/apt-pkg/edsp/edsplistparser.h
index 3e196cb9a..5d82716c7 100644
--- a/apt-pkg/edsp/edsplistparser.h
+++ b/apt-pkg/edsp/edsplistparser.h
@@ -12,9 +12,8 @@
 #define PKGLIB_EDSPLISTPARSER_H
 
 #include <apt-pkg/deblistparser.h>
-#include <apt-pkg/pkgcachegen.h>
-#include <apt-pkg/indexfile.h>
-#include <apt-pkg/tagfile.h>
+
+class FileFd;
 
 class edspListParser : public debListParser
 {
diff --git a/apt-pkg/indexfile.h b/apt-pkg/indexfile.h
index 68d53ad7e..5e162a846 100644
--- a/apt-pkg/indexfile.h
+++ b/apt-pkg/indexfile.h
@@ -27,10 +27,12 @@
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/srcrecords.h>
 #include <apt-pkg/pkgrecords.h>
+#include <apt-pkg/macros.h>
 
 class pkgAcquire;
 class pkgCacheGenerator;
 class OpProgress;
+
 class pkgIndexFile
 {
    protected:
diff --git a/apt-pkg/indexrecords.cc b/apt-pkg/indexrecords.cc
index 7b48d659e..cdb9250e8 100644
--- a/apt-pkg/indexrecords.cc
+++ b/apt-pkg/indexrecords.cc
@@ -10,6 +10,9 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/hashes.h>
+
 #include <sys/stat.h>
 #include <clocale>
 
diff --git a/apt-pkg/indexrecords.h b/apt-pkg/indexrecords.h
index 66b84f8bb..fa60a0847 100644
--- a/apt-pkg/indexrecords.h
+++ b/apt-pkg/indexrecords.h
@@ -7,7 +7,6 @@
 
 
 #include <apt-pkg/pkgcache.h>
-#include <apt-pkg/fileutl.h>
 #include <apt-pkg/hashes.h>
 
 #include <map>
diff --git a/apt-pkg/init.cc b/apt-pkg/init.cc
index a1cb05e38..2a709dd36 100644
--- a/apt-pkg/init.cc
+++ b/apt-pkg/init.cc
@@ -13,6 +13,8 @@
 #include <apt-pkg/init.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/configuration.h>
 
 #include <cstdlib>
 #include <sys/stat.h>
diff --git a/apt-pkg/init.h b/apt-pkg/init.h
index 4cee1001a..85ad0df7e 100644
--- a/apt-pkg/init.h
+++ b/apt-pkg/init.h
@@ -13,8 +13,8 @@
 #ifndef PKGLIB_INIT_H
 #define PKGLIB_INIT_H
 
-#include <apt-pkg/configuration.h>
-#include <apt-pkg/pkgsystem.h>
+class pkgSystem;
+class Configuration;
 
 // These lines are extracted by the makefiles and the buildsystem
 // Increasing MAJOR or MINOR results in the need of recompiling all
diff --git a/apt-pkg/metaindex.h b/apt-pkg/metaindex.h
index 66c287c30..9cc79a7a6 100644
--- a/apt-pkg/metaindex.h
+++ b/apt-pkg/metaindex.h
@@ -4,10 +4,7 @@
 
 #include <string>
 #include <apt-pkg/pkgcache.h>
-#include <apt-pkg/srcrecords.h>
-#include <apt-pkg/pkgrecords.h>
 #include <apt-pkg/indexfile.h>
-#include <apt-pkg/vendor.h>
 
 class pkgAcquire;
 class pkgCacheGenerator;
diff --git a/apt-pkg/packagemanager.h b/apt-pkg/packagemanager.h
index 7ee17942c..d4989a6e0 100644
--- a/apt-pkg/packagemanager.h
+++ b/apt-pkg/packagemanager.h
@@ -23,11 +23,10 @@
 #ifndef PKGLIB_PACKAGEMANAGER_H
 #define PKGLIB_PACKAGEMANAGER_H
 
+#include <apt-pkg/pkgcache.h>
 
 #include <string>
 #include <iostream>
-#include <apt-pkg/pkgcache.h>
-#include <apt-pkg/depcache.h>
 #include <set>
 
 class pkgAcquire;
diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc
index a39aa9f59..1356054b5 100644
--- a/apt-pkg/pkgcachegen.cc
+++ b/apt-pkg/pkgcachegen.cc
@@ -25,6 +25,8 @@
 #include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/macros.h>
 #include <apt-pkg/tagfile.h>
+#include <apt-pkg/metaindex.h>
+#include <apt-pkg/fileutl.h>
 
 #include <vector>
 #include <sys/stat.h>
diff --git a/apt-pkg/pkgsystem.h b/apt-pkg/pkgsystem.h
index 246762e0b..211fd0d56 100644
--- a/apt-pkg/pkgsystem.h
+++ b/apt-pkg/pkgsystem.h
@@ -37,14 +37,16 @@
 #ifndef PKGLIB_PKGSYSTEM_H
 #define PKGLIB_PKGSYSTEM_H
 
+#include <apt-pkg/pkgcache.h>
 
-#include <apt-pkg/depcache.h>
 #include <vector>
-    
+
+class pkgDepCache;
 class pkgPackageManager;
 class pkgVersioningSystem;
 class Configuration;
 class pkgIndexFile;
+class PkgFileIterator;
 
 class pkgSystem
 {   
diff --git a/apt-pkg/sourcelist.cc b/apt-pkg/sourcelist.cc
index e20ec4704..46025fc74 100644
--- a/apt-pkg/sourcelist.cc
+++ b/apt-pkg/sourcelist.cc
@@ -15,6 +15,8 @@
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/metaindex.h>
+#include <apt-pkg/indexfile.h>
 
 #include <fstream>
 
diff --git a/apt-pkg/sourcelist.h b/apt-pkg/sourcelist.h
index 7b473ee64..4509e54b9 100644
--- a/apt-pkg/sourcelist.h
+++ b/apt-pkg/sourcelist.h
@@ -31,13 +31,15 @@
 #include <vector>
 #include <map>
 #include <apt-pkg/pkgcache.h>
-#include <apt-pkg/metaindex.h>
 
 using std::string;
 using std::vector;
     
 
-class pkgAquire;
+class pkgAcquire;
+class pkgIndexFile;
+class metaIndex;
+
 class pkgSourceList
 {
    public:
diff --git a/apt-pkg/srcrecords.cc b/apt-pkg/srcrecords.cc
index 8c1de2ea5..f6d2d5158 100644
--- a/apt-pkg/srcrecords.cc
+++ b/apt-pkg/srcrecords.cc
@@ -17,6 +17,7 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/metaindex.h>
 
 #include <apti18n.h>
 									/*}}}*/
diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc
index 418e6bed8..ec86173df 100644
--- a/apt-pkg/tagfile.cc
+++ b/apt-pkg/tagfile.cc
@@ -16,6 +16,7 @@
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 
 #include <string>
 #include <stdio.h>
diff --git a/apt-pkg/tagfile.h b/apt-pkg/tagfile.h
index e3034b628..a5bf5ac90 100644
--- a/apt-pkg/tagfile.h
+++ b/apt-pkg/tagfile.h
@@ -20,10 +20,12 @@
 #ifndef PKGLIB_TAGFILE_H
 #define PKGLIB_TAGFILE_H
 
-
-#include <apt-pkg/fileutl.h>
 #include <stdio.h>
 
+#include <string>
+
+class FileFd;
+
 class pkgTagSection
 {
    const char *Section;
diff --git a/apt-pkg/vendorlist.cc b/apt-pkg/vendorlist.cc
index 2ccb556ab..ecfc7db87 100644
--- a/apt-pkg/vendorlist.cc
+++ b/apt-pkg/vendorlist.cc
@@ -2,12 +2,14 @@
 
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/configuration.h>
 #include <apti18n.h>
 
 #if __GNUC__ >= 4
 	#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
 
+#include <apt-pkg/vendor.h>
 #include <apt-pkg/vendorlist.h>
 
 using std::string;
diff --git a/apt-pkg/vendorlist.h b/apt-pkg/vendorlist.h
index 62ab78a33..733d23a32 100644
--- a/apt-pkg/vendorlist.h
+++ b/apt-pkg/vendorlist.h
@@ -15,10 +15,11 @@
 
 #include <string>
 #include <vector>
-#include <apt-pkg/vendor.h>
-#include <apt-pkg/configuration.h>
 #include <apt-pkg/macros.h>
 
+class Vendor;
+class Configuration;
+
 class __deprecated pkgVendorList
 {
    protected:
diff --git a/apt-pkg/version.h b/apt-pkg/version.h
index c9257d116..47e1919bb 100644
--- a/apt-pkg/version.h
+++ b/apt-pkg/version.h
@@ -20,8 +20,7 @@
 #ifndef PKGLIB_VERSION_H
 #define PKGLIB_VERSION_H
 
-
-#include <apt-pkg/strutl.h>    
+#include <apt-pkg/strutl.h>
 #include <string>
 
 class pkgVersioningSystem
diff --git a/cmdline/acqprogress.h b/cmdline/acqprogress.h
index 48f90ae59..8f0903923 100644
--- a/cmdline/acqprogress.h
+++ b/cmdline/acqprogress.h
@@ -12,6 +12,8 @@
 
 #include <apt-pkg/acquire.h>
 
+#include <string>
+
 class AcqTextStatus : public pkgAcquireStatus
 {
    unsigned int &ScreenWidth;
@@ -21,7 +23,7 @@ class AcqTextStatus : public pkgAcquireStatus
    
    public:
    
-   virtual bool MediaChange(string Media,string Drive);
+   virtual bool MediaChange(std::string Media,std::string Drive);
    virtual void IMSHit(pkgAcquire::ItemDesc &Itm);
    virtual void Fetch(pkgAcquire::ItemDesc &Itm);
    virtual void Done(pkgAcquire::ItemDesc &Itm);
diff --git a/cmdline/apt-cache.cc b/cmdline/apt-cache.cc
index a4cdf784e..82a31c9b1 100644
--- a/cmdline/apt-cache.cc
+++ b/cmdline/apt-cache.cc
@@ -16,7 +16,6 @@
 #include<config.h>
 
 #include <apt-pkg/error.h>
-#include <apt-pkg/pkgcachegen.h>
 #include <apt-pkg/cachefile.h>
 #include <apt-pkg/cacheset.h>
 #include <apt-pkg/init.h>
@@ -24,6 +23,7 @@
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/cmndline.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/pkgrecords.h>
 #include <apt-pkg/srcrecords.h>
 #include <apt-pkg/version.h>
@@ -31,6 +31,9 @@
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/sptr.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/indexfile.h>
+#include <apt-pkg/metaindex.h>
 
 #include <cassert>
 #include <locale.h>
@@ -40,6 +43,7 @@
 #include <regex.h>
 #include <stdio.h>
 #include <iomanip>
+#include <algorithm>
 
 #include <apti18n.h>
 									/*}}}*/
diff --git a/cmdline/apt-cdrom.cc b/cmdline/apt-cdrom.cc
index 8608b1215..fa48debcd 100644
--- a/cmdline/apt-cdrom.cc
+++ b/cmdline/apt-cdrom.cc
@@ -23,6 +23,8 @@
 #include <apt-pkg/acquire.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/cdrom.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/pkgsystem.h>
 
 #include <locale.h>
 #include <iostream>
diff --git a/cmdline/apt-config.cc b/cmdline/apt-config.cc
index df2958975..94f6ee9b0 100644
--- a/cmdline/apt-config.cc
+++ b/cmdline/apt-config.cc
@@ -24,6 +24,7 @@
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/pkgsystem.h>
 
 #include <locale.h>
 #include <iostream>
diff --git a/cmdline/apt-dump-solver.cc b/cmdline/apt-dump-solver.cc
index dab0cc6fd..e82e15c6e 100644
--- a/cmdline/apt-dump-solver.cc
+++ b/cmdline/apt-dump-solver.cc
@@ -12,6 +12,7 @@
 #include <config.h>
 
 #include <cstdio>
+#include <iostream>
 									/*}}}*/
 
 // ShowHelp - Show a help screen					/*{{{*/
diff --git a/cmdline/apt-extracttemplates.cc b/cmdline/apt-extracttemplates.cc
index 5d7b76c23..d5c1a3208 100644
--- a/cmdline/apt-extracttemplates.cc
+++ b/cmdline/apt-extracttemplates.cc
@@ -30,6 +30,7 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/pkgsystem.h>
 
 #include <stdio.h>
 #include <string.h>
diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc
index d8f207f0a..5e950332f 100644
--- a/cmdline/apt-get.cc
+++ b/cmdline/apt-get.cc
@@ -36,6 +36,7 @@
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/clean.h>
 #include <apt-pkg/srcrecords.h>
 #include <apt-pkg/version.h>
@@ -44,6 +45,10 @@
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/md5.h>
 #include <apt-pkg/versionmatch.h>
+#include <apt-pkg/progress.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/pkgrecords.h>
+#include <apt-pkg/indexfile.h>
 
 #include "acqprogress.h"
 
diff --git a/cmdline/apt-internal-solver.cc b/cmdline/apt-internal-solver.cc
index ef6c688fe..1b636e4d5 100644
--- a/cmdline/apt-internal-solver.cc
+++ b/cmdline/apt-internal-solver.cc
@@ -11,10 +11,12 @@
 #include <apt-pkg/cmndline.h>
 #include <apt-pkg/init.h>
 #include <apt-pkg/cachefile.h>
+#include <apt-pkg/cacheset.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/edsp.h>
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/pkgsystem.h>
 
 #include <config.h>
 #include <apti18n.h>
diff --git a/cmdline/apt-mark.cc b/cmdline/apt-mark.cc
index 8c9a47913..339cbdf44 100644
--- a/cmdline/apt-mark.cc
+++ b/cmdline/apt-mark.cc
@@ -13,6 +13,7 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/init.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/pkgsystem.h>
 
 #include <algorithm>
 
diff --git a/cmdline/apt-sortpkgs.cc b/cmdline/apt-sortpkgs.cc
index 44b74cf6c..20ae14f2a 100644
--- a/cmdline/apt-sortpkgs.cc
+++ b/cmdline/apt-sortpkgs.cc
@@ -20,6 +20,8 @@
 #include <apt-pkg/cmndline.h>
 #include <apt-pkg/init.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/pkgsystem.h>
 
 #include <vector>
 #include <algorithm>
diff --git a/debian/changelog b/debian/changelog
index 8a4994a32..aa98cfbd1 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,8 +2,9 @@ apt (0.8.16~exp7) experimental; urgency=low
 
   [ David Kalnischkies ]
   * do not pollute namespace in the headers with using (Closes: #500198)
+  * use forward declaration in headers if possible instead of includes
 
- -- David Kalnischkies <kalnischkies@gmail.com>  Mon, 19 Sep 2011 13:25:58 +0200
+ -- David Kalnischkies <kalnischkies@gmail.com>  Mon, 19 Sep 2011 19:13:48 +0200
 
 apt (0.8.16~exp6) experimental; urgency=low
 
diff --git a/ftparchive/cachedb.cc b/ftparchive/cachedb.cc
index 7d8718c56..c4db88811 100644
--- a/ftparchive/cachedb.cc
+++ b/ftparchive/cachedb.cc
@@ -18,6 +18,7 @@
 #include <apt-pkg/sha2.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/fileutl.h>
     
 #include <netinet/in.h>       // htonl, etc
 
diff --git a/ftparchive/cachedb.h b/ftparchive/cachedb.h
index f2e1e19e4..377c41607 100644
--- a/ftparchive/cachedb.h
+++ b/ftparchive/cachedb.h
@@ -13,16 +13,16 @@
 #define CACHEDB_H
 
 
+#include <apt-pkg/debfile.h>
 
 #include <db.h>
-#include <string>
-#include <apt-pkg/debfile.h>
 #include <inttypes.h>
 #include <sys/stat.h>
 #include <errno.h>
-    
+#include <string>
+
 #include "contents.h"
-    
+
 class CacheDB
 {
    protected:
diff --git a/ftparchive/contents.h b/ftparchive/contents.h
index cdd8abd5c..4af9db574 100644
--- a/ftparchive/contents.h
+++ b/ftparchive/contents.h
@@ -12,9 +12,10 @@
     
 #include <stdlib.h>
 #include <stdio.h>
-#include <apt-pkg/debfile.h>
 #include <apt-pkg/dirstream.h>
 
+class debDebFile;
+
 class GenContents
 {
    struct Node
diff --git a/ftparchive/multicompress.h b/ftparchive/multicompress.h
index 19e5065fa..5496b06d0 100644
--- a/ftparchive/multicompress.h
+++ b/ftparchive/multicompress.h
@@ -16,11 +16,10 @@
 #ifndef MULTICOMPRESS_H
 #define MULTICOMPRESS_H
 
-
-
-#include <string>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/aptconfiguration.h>
+
+#include <string>
 #include <stdio.h>
 #include <sys/types.h>
     
diff --git a/ftparchive/writer.h b/ftparchive/writer.h
index a43b83876..76a3dfd1e 100644
--- a/ftparchive/writer.h
+++ b/ftparchive/writer.h
@@ -22,7 +22,6 @@
 #include <set>
 
 #include "cachedb.h"
-#include "multicompress.h"
 #include "override.h"
 #include "apt-ftparchive.h"
 
@@ -31,7 +30,7 @@ using std::cout;
 using std::endl;
 using std::vector;
 using std::map;
-    
+
 class FTWScanner
 {
    protected:
@@ -81,6 +80,8 @@ class FTWScanner
    virtual ~FTWScanner() {};
 };
 
+class MultiCompress;
+
 class TranslationWriter
 {
    MultiCompress *Comp;
diff --git a/methods/bzip2.cc b/methods/bzip2.cc
index ad5db6cfb..8e7e46557 100644
--- a/methods/bzip2.cc
+++ b/methods/bzip2.cc
@@ -20,6 +20,7 @@
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/hashes.h>
+#include <apt-pkg/configuration.h>
 
 #include <sys/stat.h>
 #include <unistd.h>
diff --git a/methods/cdrom.cc b/methods/cdrom.cc
index bc115d259..e7114b168 100644
--- a/methods/cdrom.cc
+++ b/methods/cdrom.cc
@@ -16,6 +16,7 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
 #include <apt-pkg/hashes.h>
 
 #include <sys/stat.h>
diff --git a/methods/connect.cc b/methods/connect.cc
index ba2264faa..9a092a43c 100644
--- a/methods/connect.cc
+++ b/methods/connect.cc
@@ -15,6 +15,8 @@
 
 #include <apt-pkg/error.h>
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/acquire-method.h>
 
 #include <stdio.h>
 #include <errno.h>
diff --git a/methods/connect.h b/methods/connect.h
index 0afa00919..bbe1bb35d 100644
--- a/methods/connect.h
+++ b/methods/connect.h
@@ -11,7 +11,8 @@
 #define CONNECT_H
 
 #include <string>
-#include <apt-pkg/acquire-method.h>
+
+class pkgAcqMethod;
 
 bool Connect(std::string To,int Port,const char *Service,int DefPort,
 	     int &Fd,unsigned long TimeOut,pkgAcqMethod *Owner);
diff --git a/methods/copy.cc b/methods/copy.cc
index fe2918469..f8d58e479 100644
--- a/methods/copy.cc
+++ b/methods/copy.cc
@@ -12,6 +12,7 @@
 #include <config.h>
 
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/hashes.h>
diff --git a/methods/file.cc b/methods/file.cc
index d58652e6e..5025c996d 100644
--- a/methods/file.cc
+++ b/methods/file.cc
@@ -19,6 +19,7 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
 
 #include <sys/stat.h>
 #include <unistd.h>
diff --git a/methods/ftp.cc b/methods/ftp.cc
index 861647aea..2ca0ac6f7 100644
--- a/methods/ftp.cc
+++ b/methods/ftp.cc
@@ -22,6 +22,7 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/netrc.h>
+#include <apt-pkg/configuration.h>
 
 #include <sys/stat.h>
 #include <sys/time.h>
diff --git a/methods/ftp.h b/methods/ftp.h
index 7088e0954..2634f0732 100644
--- a/methods/ftp.h
+++ b/methods/ftp.h
@@ -10,6 +10,10 @@
 #ifndef APT_FTP_H
 #define APT_FTP_H
 
+#include <apt-pkg/strutl.h>
+
+#include <string>
+
 class FTPConn
 {
    char Buffer[1024*10];
diff --git a/methods/gpgv.cc b/methods/gpgv.cc
index 67cbd36a2..2b2aba017 100644
--- a/methods/gpgv.cc
+++ b/methods/gpgv.cc
@@ -5,6 +5,7 @@
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/indexcopy.h>
+#include <apt-pkg/configuration.h>
 
 #include <utime.h>
 #include <stdio.h>
diff --git a/methods/http.cc b/methods/http.cc
index b60cfeb9e..0d81c73ed 100644
--- a/methods/http.cc
+++ b/methods/http.cc
@@ -29,6 +29,7 @@
 
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/acquire-method.h>
+#include <apt-pkg/configuration.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/netrc.h>
@@ -288,6 +289,11 @@ void CircleBuf::Stats()
    clog << "Got " << InP << " in " << Diff << " at " << InP/Diff << endl;*/
 }
 									/*}}}*/
+CircleBuf::~CircleBuf()
+{
+   delete [] Buf;
+   delete Hash;
+}
 
 // ServerState::ServerState - Constructor				/*{{{*/
 // ---------------------------------------------------------------------
diff --git a/methods/http.h b/methods/http.h
index 08823d1b1..c73d4df5c 100644
--- a/methods/http.h
+++ b/methods/http.h
@@ -13,12 +13,15 @@
 
 #define MAXLEN 360
 
-#include <apt-pkg/hashes.h>
+#include <apt-pkg/strutl.h>
+
+#include <string>
 
 using std::cout;
 using std::endl;
 
 class HttpMethod;
+class Hashes;
 
 class CircleBuf
 {
@@ -80,7 +83,7 @@ class CircleBuf
    void Stats();
 
    CircleBuf(unsigned long long Size);
-   ~CircleBuf() {delete [] Buf; delete Hash;};
+   ~CircleBuf();
 };
 
 struct ServerState
diff --git a/methods/https.cc b/methods/https.cc
index 06a0e285a..e70206dfb 100644
--- a/methods/https.cc
+++ b/methods/https.cc
@@ -17,6 +17,7 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/netrc.h>
+#include <apt-pkg/configuration.h>
 
 #include <sys/stat.h>
 #include <sys/time.h>
diff --git a/methods/https.h b/methods/https.h
index 3f0c416b6..b7adeb880 100644
--- a/methods/https.h
+++ b/methods/https.h
@@ -20,7 +20,7 @@ using std::cout;
 using std::endl;
 
 class HttpsMethod;
-
+class FileFd;
 
 class HttpsMethod : public pkgAcqMethod
 {
@@ -45,6 +45,7 @@ class HttpsMethod : public pkgAcqMethod
    };
 };
 
+#include <apt-pkg/strutl.h>
 URI Proxy;
 
 #endif
diff --git a/methods/mirror.cc b/methods/mirror.cc
index 61a7f12fd..3d5983efa 100644
--- a/methods/mirror.cc
+++ b/methods/mirror.cc
@@ -18,7 +18,8 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/sourcelist.h>
-
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/metaindex.h>
 
 #include <algorithm>
 #include <fstream>
diff --git a/methods/mirror.h b/methods/mirror.h
index 97d18144a..81e531e21 100644
--- a/methods/mirror.h
+++ b/methods/mirror.h
@@ -11,8 +11,9 @@
 #ifndef APT_MIRROR_H
 #define APT_MIRROR_H
 
-
 #include <iostream>
+#include <string>
+#include <vector>
 
 using std::cout;
 using std::cerr;
@@ -24,29 +25,29 @@ class MirrorMethod : public HttpMethod
 {
    FetchResult Res;
    // we simply transform between BaseUri and Mirror
-   string BaseUri;    // the original mirror://... url
-   string Mirror;     // the selected mirror uri (http://...)
-   vector<string> AllMirrors; // all available mirrors
-   string MirrorFile; // the file that contains the list of mirrors
+   std::string BaseUri;    // the original mirror://... url
+   std::string Mirror;     // the selected mirror uri (http://...)
+   std::vector<std::string> AllMirrors; // all available mirrors
+   std::string MirrorFile; // the file that contains the list of mirrors
    bool DownloadedMirrorFile; // already downloaded this session
-   string Dist;       // the target distrubtion (e.g. sid, oneiric)
+   std::string Dist;       // the target distrubtion (e.g. sid, oneiric)
 
    bool Debug;
 
  protected:
-   bool DownloadMirrorFile(string uri);
-   bool RandomizeMirrorFile(string file);
-   string GetMirrorFileName(string uri);
+   bool DownloadMirrorFile(std::string uri);
+   bool RandomizeMirrorFile(std::string file);
+   std::string GetMirrorFileName(std::string uri);
    bool InitMirrors();
    bool TryNextMirror();
    void CurrentQueueUriToMirror();
-   bool Clean(string dir);
+   bool Clean(std::string dir);
    
    // we need to overwrite those to transform the url back
-   virtual void Fail(string Why, bool Transient = false);
+   virtual void Fail(std::string Why, bool Transient = false);
    virtual void URIStart(FetchResult &Res);
    virtual void URIDone(FetchResult &Res,FetchResult *Alt = 0);
-   virtual bool Configuration(string Message);
+   virtual bool Configuration(std::string Message);
 
  public:
    MirrorMethod();
diff --git a/methods/rred.cc b/methods/rred.cc
index 2a05acce1..ef00fcaa3 100644
--- a/methods/rred.cc
+++ b/methods/rred.cc
@@ -7,6 +7,7 @@
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/hashes.h>
+#include <apt-pkg/configuration.h>
 
 #include <sys/stat.h>
 #include <sys/uio.h>
diff --git a/methods/rsh.cc b/methods/rsh.cc
index add128c49..da9777fc4 100644
--- a/methods/rsh.cc
+++ b/methods/rsh.cc
@@ -14,6 +14,9 @@
 #include <config.h>
 
 #include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/hashes.h>
+#include <apt-pkg/configuration.h>
 
 #include <sys/stat.h>
 #include <sys/time.h>
diff --git a/methods/rsh.h b/methods/rsh.h
index 7bebe29a0..d7efa3f06 100644
--- a/methods/rsh.h
+++ b/methods/rsh.h
@@ -12,9 +12,9 @@
 
 #include <string>
 #include <apt-pkg/strutl.h>
-#include <apt-pkg/hashes.h>
-#include <apt-pkg/acquire-method.h>
-#include <apt-pkg/fileutl.h>
+
+class Hashes;
+class FileFd;
 
 class RSHConn
 {
@@ -50,6 +50,8 @@ class RSHConn
    ~RSHConn();
 };
 
+#include <apt-pkg/acquire-method.h>
+
 class RSHMethod : public pkgAcqMethod
 {
    virtual bool Fetch(FetchItem *Itm);
diff --git a/test/interactive-helper/extract-control.cc b/test/interactive-helper/extract-control.cc
index 29dcbf371..a1b3600aa 100644
--- a/test/interactive-helper/extract-control.cc
+++ b/test/interactive-helper/extract-control.cc
@@ -1,5 +1,6 @@
 #include <apt-pkg/debfile.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
 
 #include <iostream>
 #include <unistd.h>
diff --git a/test/interactive-helper/test_udevcdrom.cc b/test/interactive-helper/test_udevcdrom.cc
index bbedc0ab5..88f5f0153 100644
--- a/test/interactive-helper/test_udevcdrom.cc
+++ b/test/interactive-helper/test_udevcdrom.cc
@@ -3,6 +3,7 @@
 #include <assert.h>
 
 #include <vector>
+#include <iostream>
 
 int main()
 {
diff --git a/test/interactive-helper/testextract.cc b/test/interactive-helper/testextract.cc
index b790df618..f7ddb72f0 100644
--- a/test/interactive-helper/testextract.cc
+++ b/test/interactive-helper/testextract.cc
@@ -6,6 +6,8 @@
 #include <apt-pkg/extract.h>
 #include <apt-pkg/init.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/pkgsystem.h>
 
 #include <stdio.h>
 #include <stdlib.h>