The current version of zip supports higher compression with the bzip2 method. To build zip with bzip2 compression using MinGW, first prepare the bzip2 library:
tar xzvf bzip2-1.0.6.tar.gz
cd bzip2-1.0.6
make
cp bzlib.h /mingw/include/
cp libbz2.a /mingw/lib
Then, get the zip source. Use the LOCAL_ZIP environment variable to configure zip.
export LOCAL_ZIP='-DLARGE_FILE_SUPPORT -DZIP64_SUPPORT -DUNICODE_SUPPORT -DBZIP2_SUPPORT -DALLOW_REGEX
Edit the LIBS line in the file makefile.gcc in the win32 folder to link zip with bzip2 library
LIBS=-luser32 -ladvapi32 -lbz2
Compile zip.
make -f win32/makefile.gcc
You'll find zip.exe in the source folder.
Compiling Unzip with MinGW
Unzip is a command-line extraction tool for .zip archives. In order to be able to unpack bzipped .ZIP archive, I need to compile unzip with bzip2 support. After compiling bzip2 as above, I downloaded unzip60.tar.gz from Info-Zip project at Sourceforge and unpacked it.
tar xzvf unzip60.tar.gz
cd unzip60
I fixed the file win32/Makefile.gcc in the section following "# optional inclusion of bzip2 decompression"
INC_BZ2LIB = -I/mingw/include
LOCFLAGS = -I/mingw/include -DUSE_BZIP2
LD_BZ2LIB = -L/mingw/lib -lbz2
LIBBZIP2 = /mingw/lib/libbz2.a
Then, I compiled Unzip like this:
make -f win32/Makefile.gcc
ls -l *.exe
Three executables unzip.exe, unzipsfx.exe and funzip.exe are created. Copy them to a folder in your path or /bin.
cp -iv *.exe /C/Windows
Usage Examples
To back up a folder:
zip -Z bzip2 -b C:\Windows\Temp -SDurX backup.zip *
