$ perl Makefile.PL
Checking if your kit is complete...
Looks good
Writing Makefile for Compress::Deflate7
$ make
cp lib/Compress/Deflate7.pm blib/lib/Compress/Deflate7.pm
g++ -c  -I7zip/CPP -D_REENTRANT -D_GNU_SOURCE -DUSE_SITECUSTOMIZE -fno-merge-constants -fno-strict-aliasing -pipe -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"1.0\" -DXS_VERSION=\"1.0\" -fPIC "-I/home/oleg/perl/lib/CORE"   InBuffer.cpp
g++ -c  -I7zip/CPP -D_REENTRANT -D_GNU_SOURCE -DUSE_SITECUSTOMIZE -fno-merge-constants -fno-strict-aliasing -pipe -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"1.0\" -DXS_VERSION=\"1.0\" -fPIC "-I/home/oleg/perl/lib/CORE"   OutBuffer.cpp
g++ -c  -I7zip/CPP -D_REENTRANT -D_GNU_SOURCE -DUSE_SITECUSTOMIZE -fno-merge-constants -fno-strict-aliasing -pipe -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"1.0\" -DXS_VERSION=\"1.0\" -fPIC "-I/home/oleg/perl/lib/CORE"   StreamObjects.cpp
In file included from StreamObjects.cpp:1:0:
7zip/CPP/7zip/Common/StreamObjects.cpp: In member function 'void CByteDynBuffer::Free()':
7zip/CPP/7zip/Common/StreamObjects.cpp:43:12: error: 'free' was not declared in this scope
7zip/CPP/7zip/Common/StreamObjects.cpp: In member function 'bool CByteDynBuffer::EnsureCapacity(size_t)':
7zip/CPP/7zip/Common/StreamObjects.cpp:60:40: error: 'realloc' was not declared in this scope
7zip/CPP/7zip/Common/StreamObjects.cpp: In member function 'void CDynBufSeqOutStream::CopyToBuffer(CByteBuffer&) const':
7zip/CPP/7zip/Common/StreamObjects.cpp:81:30: error: conversion from 'const CByteDynBuffer' to 'const void*' is ambiguous
7zip/CPP/7zip/Common/StreamObjects.h:52:3: note: candidates are: CByteDynBuffer::operator const Byte*() const
7zip/CPP/7zip/Common/StreamObjects.h:51:3: note:                 CByteDynBuffer::operator Byte*() const
make: *** [StreamObjects.o] Error 1