cannam@85: From version 1.0.0 libsndfile has had the ability to read and write files of cannam@85: greater than 2 Gig in size on most OSes even if sizeof (long) == 4. cannam@85: OSes which support this feature include Linux (2.4 kernel, glibc6) on x86, PPC and cannam@85: probably others, Win32, MacOS X, *BSD, Solaris and probably others. cannam@85: OSes on 64 bit processors where the default compile environment is LP64 (longs and cannam@85: pointers are 64 bit ie Linux on DEC/Compaq/HP Alpha processors) automatically cannam@85: support large file access. cannam@85:
cannam@85:cannam@85: Other OSes including Linux on 32 bit processors, 32 bit Solaris and others require cannam@85: special compiler flags to add large file support. cannam@85: This applies to both the compilation of the library itself and the compilation of cannam@85: programs which link to the library. cannam@85:
cannam@85:cannam@85: Note : People using Win32, MacOS (both OS X and pre-OS X) or *BSD can disregard the cannam@85: rest of this document as it does not apply to either of these OSes. cannam@85:
cannam@85:cannam@85: The pkg-config program makes finding the correct compiler flag values and cannam@85: library location far easier. cannam@85: During the installation of libsndfile, a file named sndfile.pc is installed cannam@85: in the directory ${libdir}/pkgconfig (ie if libsndfile is installed in cannam@85: /usr/local/lib, sndfile.pc will be installed in cannam@85: /usr/local/lib/pkgconfig/). cannam@85:
cannam@85:cannam@85: In order for pkg-config to find sndfile.pc it may be necessary to point the cannam@85: environment variable PKG_CONFIG_PATH in the right direction. cannam@85:
cannam@85:cannam@85: export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig cannam@85:cannam@85: cannam@85:
cannam@85: Then, to compile a C file into an object file, the command would be: cannam@85:
cannam@85:cannam@85: gcc `pkg-config --cflags sndfile` -c somefile.c cannam@85:cannam@85:
cannam@85: and to link a number of objects into an executable that links against libsndfile, cannam@85: the command would be: cannam@85:
cannam@85:cannam@85: gcc `pkg-config --libs sndfile` obj1.o obj2.o -o program cannam@85:cannam@85: cannam@85:
cannam@85: Obviously all this can be rolled into a Makefile for easier maintenance. cannam@85:
cannam@85: cannam@85: