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Exiv2
Welcome to Exiv2, a C++ library and a command line utility to read and write Exif, IPTC and XMP image metadata. The homepage of Exiv2 is:
http://www.exiv2.org/
See doc/ChangeLog for a list of recent changes to Exiv2.
Exiv2 API and tag reference documentation is at http://www.exiv2.org/doc
or you can build it and point your browser to doc/index.html.
For more information on XMP support in Exiv2, see doc/README-XMP.
Building and Installing
You can build the libraries in the following ways:
1 Autotools: UNIX-like systems (including GNU/Linux, MacOS-X, Cygwin (32 and 64), MinGW (32 and 64)
- general notes follow
- FAQ concerning Cygwin/MSYS and Mac OS X: http://dev.exiv2.org/projects/exiv2/wiki/FAQ
2 Microsoft Visual C++ solutions
- see msvc/ReadMe.txt (32bit and 64bit builds Visual Studio 2005,08,10,12,13,15)
3 CMake (support for all platforms/compilers except MinGW)
- see README-CMAKE for more information
To build a commercial version of the Exiv2 library, see also section "Commercial version" at the end of this file.
On UNIX-like systems, use the GNU configure script. Run the following commands from the top directory (containing this file) to configure, build and install the library and utility:
$ ./configure
$ make
$ sudo make install (Cygwin/MinGW $ make install)
Caution: If you downloaded the source code from the git repository, you will have to generate the configure script:
$ make config
$ ./configure
$ make
$ sudo make install (Cygwin/MinGW $ make install)
To build the sample applications:
$ make samples
The default install locations are /usr/local/lib for the library,
/usr/local/bin for the exiv2 utility and /usr/local/include/exiv2 for the
header files. Use the --prefix=directory option of the configure script to
change the default. Run ./configure --help to see a list of all options.
To uninstall Exiv2 from a UNIX-like system, run:
$ sudo make uninstall
Dependencies
The following libexiv2 features are enabled by default and may
require external libraries. They can be controlled through configure
options. See also ./configure --help.
Feature Package Configure options
-------------------------- -------- ----------------------------
PNG image support zlib --without-zlib
--with-zlib=DIR
Native language support gettext --disable-nls
Characterset conversions libiconv --without-libiconv-prefix
--with-libiconv-prefix[=DIR]
XMP support expat --disable-xmp
--with-expat=DIR
zlib http://zlib.net/
gettext *) http://www.gnu.org/software/gettext/
libiconv *) http://www.gnu.org/software/libiconv/
expat http://expat.sourceforge.net/
*) Some systems have gettext and iconv in libc. The configure script (and CMake) should detect this.
On Linux, it is usually best to install the dependencies through the package management system of the distribution together with the corresponding development packages (for the header files and static libraries).
To build the sample programs in the
samples/
directory (make samples), you also need to have the pkg-config
program.
To generate the documentation (make doc), you will further need
doxygen, graphviz, python and xsltproc.
pkg-config http://pkg-config.freedesktop.org/wiki/
doxygen http://www.doxygen.org/
graphviz http://www.graphviz.org/
python http://www.python.org/
xsltproc http://xmlsoft.org/XSLT/
md5sum http://www.microbrew.org/tools/md5sha1sum/
Troubleshooting
If you have problems building Exiv2 on UNIX-like systems, check the
generated config/config.mk and config/config.h files. You should not
need to modify any Makefile directly, in particular not src/Makefile!
Support
All project resources are accessible from the project website at http://dev.exiv2.org/projects/exiv2/wiki
Please send feedback or queries to the Exiv2 forum. For new bug reports and feature requests, please open an issue.
Linking your own code with Exiv2
A pkg-config .pc file is installed together with the library.
Application developers can use pkg-config(1) to obtain correct
compile and link time flags for the Exiv2 library. See
samples/Makefile
for an example.
If you downloaded Exiv2 directly from the git repository, and you want to build it using the GNU configure script, then you need to have GNU Autoconf installed on your system and create the configure script as the first step:
$ make config
Then run the usual ./configure; make; make install commands.
Exiv2 uses GNU Libtool in order to build shared libraries on a variety
of systems. While this is very nice for making usable binaries, it can
be a pain when trying to debug a program. For that reason, compilation
of shared libraries can be turned off by specifying the
--disable-shared option to the configure script.
License
Copyright (C) 2004-2017 Andreas Huggel ahuggel@gmx.net
Exiv2 is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
Exiv2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
Commercial version
If you have a commercial license, you must disable NLS support and the conversion of Nikon lens data to readable lens names to build a commercial version of the Exiv2 library.
To do this on Windows, compile the library with the preprocessor
symbol EXV_COMMERCIAL_VERSION defined in msvc\include\exv_msvc.h
On UNIX-like systems, run the configure script with the options
--enable-commercial --disable-nls --disable-lensdata.