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114 lines
3.6 KiB
Plaintext
114 lines
3.6 KiB
Plaintext
README_LINUX.txt for PortMidi
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Roger Dannenberg
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14 Oct 2009
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To make PortMidi, you need cmake and the Java SDK.
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Go back up to the portmidi directory and type:
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ccmake .
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Type 'c' (configure) and then 'g' (generate). You may have
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to manually set JAVA_INCLUDE_PATH and JAVA_JVM_LIBRARY
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by typing 't' (toggle to advanced mode) and using the
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editor to change the fields. You can find possible values
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for JAVA_INCLUDE_PATH by typing "locate jni.h", and for
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JAVA_JVM_LIBRARY by typing locate libjvm".
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You also need JAVA_INCLUDE_PATH2, but this will normally
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be set automatically after you set JAVA_INCLUDE_PATH and
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run "configure" (type "c" to ccmake). Normally,
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JAVA_INCLUDE_PATH2 is the linux subdirectory within
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JAVA_INCLUDE_PATH.
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Notice that the CMAKE_BUILD_TYPE can be Debug or Release.
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Stick with Release if you are not debugging.
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After successfully generating make files with ccmake, you
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can run make:
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make
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The Makefile will build all test programs and the portmidi
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library. For experimental software,
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especially programs running from the command line, we
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recommend using the Debug version -- it will terminate your
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program and print a helpful message if any PortMidi
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function returns an error code. (Released software should
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check for error codes and handle them, but for quick,
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non-critical projects, the automatic "print and die"
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handling can save some work.)
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THE pmdefaults PROGRAM
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You should install pmdefaults. It provides a graphical interface
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for selecting default MIDI IN and OUT devices so that you don't
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have to build device selection interfaces into all your programs
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and so users have a single place to set a preference.
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Follow the instructions above to run ccmake, making sure that
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CMAKE_BUILD_TYPE is Release. Run make as described above. Then:
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sudo make install
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This will install PortMidi libraries and the pmdefault program.
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You must alos have the environment variable LD_LIBRARY_PATH set
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to include /usr/local/lib (where libpmjni.so is installed).
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Now, you can run pmdefault.
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SETTING LD_LIBRARY_PATH
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pmdefaults will not work unless LD_LIBRARY_PATH includes a
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directory (normally /usr/local/lib) containing libpmjni.so,
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installed as described above.
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To set LD_LIBRARY_PATH, you might want to add this to your
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~/.profile (if you use the bash shell):
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LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
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export LD_LIBRARY_PATH
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A NOTE ABOUT AMD64:
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When compiling portmidi under linux on an AMD64, I had to add the -fPIC
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flag to the gcc flags.
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Reason: when trying to build John Harrison's pyPortMidi gcc bailed out
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with this error:
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./linux/libportmidi.a(pmlinux.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC
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./linux/libportmidi.a: could not read symbols: Bad value
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collect2: ld returned 1 exit status
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error: command 'gcc' failed with exit status 1
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What they said:
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http://www.gentoo.org/proj/en/base/amd64/howtos/index.xml?part=1&chap=3
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On certain architectures (AMD64 amongst them), shared libraries *must*
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be "PIC-enabled".
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CHANGELOG
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22-jan-2010 Roger B. Dannenberg
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Updated instructions about Java paths
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14-oct-2009 Roger B. Dannenberg
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Using CMake now for building and configuration
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29-aug-2006 Roger B. Dannenberg
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Fixed PortTime to join with time thread for clean exit.
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28-aug-2006 Roger B. Dannenberg
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Updated this documentation.
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08-Jun-2004 Roger B. Dannenberg
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Updated code to use new system abstraction.
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12-Apr-2003 Roger B. Dannenberg
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Fixed pm_test/test.c to filter clocks and active messages.
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Integrated changes from Clemens Ladisch:
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cleaned up pmlinuxalsa.c
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record timestamp on sysex input
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deallocate some resources previously left open
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