Basic Installation ================== For more information specific to this package, please read the README file. This source code distribution is autoconfiguring and you should be able to compile it and install it without manual interventions such as editing Makefiles, configuration files, and so on. These are generic instructions for people who are not familiar with installing autoconfiguring software. The simplest way to compile this package is to enter the source code main directory and do the following: 1. Configure the source code by typing: % sh ./configure If you're planning to install the package into your home directory or to a location other than `/usr/local' then add the flag `--prefix=PATH' to `configure'. For example, if your home directory is `/home/luser' you can configure the package to install itself there by invoking: % sh ./configure --prefix=/home/luser While running, `configure' prints some messages telling which features is it checking for. 2. Compile the package by typing: % make Running `make' takes a while. If this is a very large package, now is the time to go make some coffee. 3. Some packages are bundled with self-tests for source-code verification. If this package includes such tests, you can optionally run them after compilation by typing % make check 4. Type `make install' to install the programs and any data files and documentation. Type `make uninstall' to undo the installation. During installation, the following files go to the following directories: Executables -> /prefix/bin Libraries -> /prefix/lib Public header files -> /prefix/include Man pages -> /prefix/man/man? Info files -> /prefix/info where `prefix' is either `/usr/local' or the PATH that you specified in the `--prefix' flag. If any of these directories do not presently exist, they will be created on demand. If you are installing in your home directory make sure that `/home/luser/bin' is in your path. If you're using the bash shell add this line at the end of your .cshrc file: PATH="/home/luser/bin:${PATH}" export PATH If you are using csh or tcsh, then use this line instead: setenv PATH /home/luser/bin:${PATH} By prepending your home directory to the rest of the PATH you can override systemwide installed software with your own custom installation. 5. You can remove the program binaries and object files from the source code directory by typing `make clean'. To also remove the files that `configure' created (so you can compile the package for a different kind of computer), type `make distclean'. Compiler configuration ====================== The `configure' shell script is responsible for choosing and configuring the compiler(s). The following options allow you to specify whether you want to enable or disable various debugging mechanisms: `--with-warnings' Make the compilers very picky about warnings. Try this whenever you write new code since it may catch a few bugs. This is not active by default because all too often warnings can be too picky and scare the end-user. `--disable-assert' Compile without using assertions. This results in faster code, but should not be used during developerment, or to run `make check' which depends on assertions. It should only be used for production runs on code that you believe is bug free. All programs are compiled with optimization level 2 by default (-O2). Occasionally that confuses the debugger when code is inlined. To disable optimization and enable debugging, set the shell environment variables CFLAGS, CXXFLAGS, FFLAGS to `-g'. On the bash shell, you can do this like this: $ export CFLAGS="-g" $ export CXXFLAGS="-g" $ export FFLAGS="-g" On the tcsh shell, use the `setenv' command instead: % setenv CFLAGS "-g" ...etc... For other shell, please consult your shell's documentation. Similarly, you can increase the optimization level by assigning these variables to "-g -O3". The following options allow you to reconsider the `configure' shell script's choice of Fortran compilers. `--with-f2c' Compile the Fortran code by translating it to C, even if a native Fortran compiler is available. A copy of the f2c translator should be bundled in the distribution. It will be compiled and then used to compile your Fortran code. `--with-g77' Compile the Fortran code with g77 even if a proprietary Fortran compiler is available `--with-f77=F77' Compile the Fortran code with the specified Fortran compiler. Depending on what languages the package uses, some of these options may or may not be available. To see what is available, type: % sh ./configure --help About the configure script ========================== The `configure' shell script attempts to guess correct values for various system-dependent variables used during compilation. It uses those values to create a `Makefile' in each directory of the package. It may also create one or more `.h' files containing system-dependent definitions. Finally, it creates a shell script `config.status' that you can run in the future to recreate the current configuration, a file `config.cache' that saves the results of its tests to speed up reconfiguring, and a file `config.log' containing compiler output (useful mainly for debugging `configure'). If you need to do unusual things to compile the package, please try to figure out how `configure' could check whether to do them, and mail diffs or instructions to the address given in the `README' so they can be considered for the next release. If at some point `config.cache' contains results you don't want to keep, you may remove or edit it. The file `configure.in' is used to create `configure' by a program called `autoconf'. You only need `configure.in' if you want to change it or regenerate `configure' using a newer version of `autoconf'. Advanced installation options. ============================== The `configure' script also understands the following more advanced options, to handle situations for which `--prefix' alone is not sufficient. You can specify separate installation prefixes for architecture-specific files and architecture-independent files. If you give `configure' the option `--exec-prefix=PATH', the package will use PATH as the prefix for installing programs and libraries. Documentation and other data files will still use the regular prefix. In addition, if you use an unusual directory layout you can give options like `--bindir=PATH' to specify different values for particular kinds of files. Run `configure --help' for a list of the directories you can set and what kinds of files go in them. If the package supports it, you can cause programs to be installed with an extra prefix or suffix on their names by giving `configure' the option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. Optional Features ================= Some packages pay attention to `--enable-FEATURE' options to `configure', where FEATURE indicates an optional part of the package. They may also pay attention to `--with-PACKAGE' options, where PACKAGE is something like `gnu-as' or `x' (for the X Window System). The `README' should mention any `--enable-' and `--with-' options that the package recognizes. For packages that use the X Window System, `configure' can usually find the X include and library files automatically, but if it doesn't, you can use the `configure' options `--x-includes=DIR' and `--x-libraries=DIR' to specify their locations.