-How to build and install openjpeg binaries
-==========================================
+# OpenJPEG installation
-UNIX/LINUX/MacOSX/Windows systems
---------------------------
+The build method maintained by OpenJPEG is [CMake](https://cmake.org/).
-Using cmake (see www.cmake.org)
+## UNIX/LINUX - MacOS (terminal) - WINDOWS (cygwin, MinGW)
-Type:
- cmake .
- make
+To build the library, type in root openjpeg directory:
+```
+mkdir build
+cd build
+cmake ..
+make
+```
+Binaries are then located in the 'bin' directory.
-If you are root:
- make install
+To install the library, type with root privileges:
+```
+make install
+make clean
+```
-else if you have sudo power:
- sudo make install
-
-else
- DESTDIR=$HOME/local make install
-
-To build the Doxygen documentation (Doxygen needs to be found on the system):
-(A 'html' directory is generated in the 'doc' directory)
- make doc
-
-Binaries are located in the 'bin' directory.
+To build the html documentation, you need doxygen to be installed on your system.
+It will create an "html" directory in TOP\_LEVEL/build/doc)
+```
+make doc
+```
Main available cmake flags:
-* To specify the install path: '-DCMAKE_INSTALL_PREFIX=/path', or use DESTDIR env variable (see above)
-* To build the shared libraries and links the executables against it: '-DBUILD_SHARED_LIBS:bool=on' (default: 'ON')
- Note: when using this option, static libraries are not built and executables are dynamically linked.
-* To build the CODEC executables: '-DBUILD_CODEC:bool=on' (default: 'ON')
-* To build the documentation: '-DBUILD_DOC:bool=on' (default: 'OFF')
-* To build the MJ2 executables: '-DBUILD_MJ2:bool=on' (default: 'OFF')
-* To build the JPWL executables and JPWL library: '-DBUILD_JPWL:bool=on' (default: 'OFF')
-* To build the JPIP library and utilities: '-DBUILD_JPIP:bool=on' (default: 'OFF')
-** To build the JPIP server: '-DBUILD_JPIP_SERVER:bool=on' (default: 'OFF')
-* To build the JP3D library and utilities: '-DBUILD_JP3D:bool=on' (default: 'OFF') (experimental)
-* To build the Java binding: '-DBUILD_JAVA:bool=on' (default: 'OFF') (experimental).
-** to choose which java implementation, you can set your JAVA_HOME env var.
-* To build the wxWidgets/C++ viewer: 'BUILD_VIEWER:BOOL=ON' (default OFF) (experimental)
-* To enable testing (and automatic result upload to http://my.cdash.org/index.php?project=OPENJPEG):
- cmake . -DBUILD_TESTING:BOOL=ON -DOPJ_DATA_ROOT:PATH='path/to/the/data/directory'
- make
- make Experimental
- Note : JPEG2000 test files are available with 'git clone https://github.com/uclouvain/openjpeg-data.git'.
- If '-DOPJ_DATA_ROOT:PATH' option is omitted, test files will be automatically searched in '${CMAKE_SOURCE_DIR}/../data',
- corresponding to the location of the data directory when compiling from the trunk (and assuming the data directory has
- been checked out of course).
-
-MACOSX
-------
-
-The same building procedures as above work for MACOSX.
-The xcode project file can also be used.
-
-If it does not work, try adding the following flag to the cmake command :
- '-DCMAKE_OSX_ARCHITECTURES:STRING=i386'
-
-WINDOWS
--------
-
-You can use cmake to generate project files for the IDE you are using (VS2010, NMake, etc).
+ * To specify the install path: '-DCMAKE\_INSTALL\_PREFIX=/path'
+ * To build the shared libraries and links the executables against it: '-DBUILD\_SHARED\_LIBS:bool=on' (default: 'ON')
+> Note: when using this option, static libraries are not built and executables are dynamically linked.
+ * To build the CODEC executables: '-DBUILD\_CODEC:bool=on' (default: 'ON')
+ * [OBSOLETE] To build the MJ2 executables: '-DBUILD\_MJ2:bool=on' (default: 'OFF')
+ * [OBSOLETE] To build the JPWL executables and JPWL library: '-DBUILD\_JPWL:bool=on' (default: 'OFF')
+ * [OBSOLETE] To build the JPIP client (java compiler recommended) library and executables: '-DBUILD\_JPIP:bool=on' (default: 'OFF')
+ * [OBSOLETE] To build the JPIP server (need fcgi) library and executables: '-DBUILD\_JPIP\_SERVER:bool=on' (default: 'OFF')
+ * To enable testing (and automatic result upload to http://my.cdash.org/index.php?project=OPENJPEG):
+```
+cmake . -DBUILD_TESTING:BOOL=ON -DOPJ_DATA_ROOT:PATH='path/to/the/data/directory' -DBUILDNAME:STRING='name_of_the_build'
+make
+make Experimental
+```
+Note : test data is available on the following github repo: https://github.com/uclouvain/openjpeg-data
+
+If '-DOPJ\_DATA\_ROOT:PATH' option is omitted, test files will be automatically searched in '${CMAKE\_SOURCE\_DIR}/../data'.
+
+Note 2 : to execute the encoding test suite, kakadu binaries are needed to decode encoded image and compare it to the baseline. Kakadu binaries are freely available for non-commercial purposes at http://www.kakadusoftware.com. kdu\_expand will need to be in your PATH for cmake to find it.
+
+Note 3 : OpenJPEG encoder and decoder (not the library itself !) depends on several libraries: png, tiff, lcms, z. If these libraries are not found on the system, they are automatically built from the versions available in the source tree. You can force the use of these embedded version with BUILD\_THIRDPARTY:BOOL=ON. On a Debian-like system you can also simply install these libraries with:
+```
+sudo apt-get install liblcms2-dev libtiff-dev libpng-dev libz-dev
+```
+
+Note 4 : On MacOS, if it does not work, try adding the following flag to the cmake command :
+```
+-DCMAKE_OSX_ARCHITECTURES:STRING=i386
+```
+
+## MacOS (XCode) - WINDOWS (VisualStudio, etc)
+
+You can use cmake to generate the project files for the IDE you are using (VC2010, XCode, etc).
Type 'cmake --help' for available generators on your platform.
-Make sure to build the third party libs (png, zlib ...):
+# Using OpenJPEG
+
+To use openjpeg exported cmake file, simply create your application doing:
- '-DBUILD_THIRDPARTY:BOOL=ON'
+```
+$ cat CMakeLists.txt
+find_package(OpenJPEG REQUIRED)
+include_directories(${OPENJPEG_INCLUDE_DIRS})
+add_executable(myapp myapp.c)
+target_link_libraries(myapp ${OPENJPEG_LIBRARIES})
+```
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