Basic Installation ================== These are installation instructions for x2dhf package. Make sure that automake and autoconf tools and gcc and gfortran (or g77) compilers are available. For example, these pieces of software are provided by automake, autoconf, ccache, gcc-gfortran (or compat-gcc-34-g77) rpm packages. 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'. Use 'autorefconf -ivf' to recreate all GNU Build System files files in the in specified directories and their subdirectories (make sure you have . The simplest way to compile this package is: 1. `cd' to the directory containing the package's files and type `autoreconf -ivf ; ./configure' to configure the package for your system. If you're using `csh' on an old version of System V, you might need to type `sh ./configure' instead to prevent `csh' from trying to execute `configure' itself. Running `configure' takes a while. While running, it prints some messages telling which features it is checking for. The program will search for the gfortran or g77 compiler (in that order) and use their default options supplemented with '-ffixed-line-length-none' one. Run './configure F77=compiler FFLAGS='compiler options' to set the default compiler and its options according to your needs. Run `./configure --enable-comp=yes' with comp equal to g77_32, g77_64, gfortran_32, gfortran_64 or ifort to use the specified compiler with its default options (see src/Makefile.am for details). The same result can be obtained by going to src directory and making make [i32|i64|r128]; make [g77_32|g77_64|gfortran_32|gfortram_64|ifort] (see item 3 below) 2. Edit src/Makefile.am to make sure that parameters MAXNU, MAXMU and MAXBASIS have desired values. When a compiler supports real*16 precison and you want to increase the accuracy of interpolation (see dointerp.f) type './configure --enable-real16'. 3. Go to the src subdirectory and `make i32; make' to compile the package for a 32-bit system. Type `make i64; make' for preparing binaries for a 64-bit system or `make r128; make' to make the program supporting quadrupole precision. `make help` for further details. 4. Goto to the tests subdirectory and `make help' to see the list of available tests. Type `make case` to run a specific test or `make all` to perform all the tests (it may take quite a while). Some sample output files for the examples in the tests directory are given in the examples directory. 5. When in package's main directory type `make install' to install the program, its wrapper and any data files and documentation. 6. You can remove the program binaries and object files from the source code directory by typing `make clean'. 7. You can uninstall the program binaries by typing `make uninstall'. 8. To recreate the package again type 'make dist-gzip'. 9. The calling tree of the program in HTML format (as produced by ftnchek) can be found in ftnchek_html directory (see CallTree.html). In order to recreate the tree make sure that the ftnchek program is available or the make command will fail. Compilers and Options ===================== Some systems require unusual options for compilation or linking that the `configure' script does not know about. You can give `configure' initial values for variables by setting them in the environment. Using a Bourne-compatible shell, you can do that on the command line like this: CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure Or on systems that have the `env' program, you can do it like this: env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure Compiling For Multiple Architectures ==================================== You can compile the package for more than one kind of computer at the same time, by placing the object files for each architecture in their own directory. To do this, you must use a version of `make' that supports the `VPATH' variable, such as GNU `make'. `cd' to the directory where you want the object files and executables to go and run the `configure' script. `configure' automatically checks for the source code in the directory that `configure' is in and in `..'. If you have to use a `make' that does not supports the `VPATH' variable, you have to compile the package for one architecture at a time in the source code directory. After you have installed the package for one architecture, use `make distclean' before reconfiguring for another architecture. Installation Names ================== By default, `make install' will install the package's files in `/usr/local/bin', `/usr/local/man', etc. You can specify an installation prefix other than `/usr/local' by giving `configure' the option `--prefix=PATH'. 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. 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. Specifying the System Type ========================== There may be some features `configure' can not figure out automatically, but needs to determine by the type of host the package will run on. Usually `configure' can figure that out, but if it prints a message saying it can not guess the host type, give it the `--host=TYPE' option. TYPE can either be a short name for the system type, such as `sun4', or a canonical name with three fields: CPU-COMPANY-SYSTEM See the file `config.sub' for the possible values of each field. If `config.sub' isn't included in this package, then this package doesn't need to know the host type. If you are building compiler tools for cross-compiling, you can also use the `--target=TYPE' option to select the type of system they will produce code for and the `--build=TYPE' option to select the type of system on which you are compiling the package. Sharing Defaults ================ If you want to set default values for `configure' scripts to share, you can create a site shell script called `config.site' that gives default values for variables like `CC', `cache_file', and `prefix'. `configure' looks for `PREFIX/share/config.site' if it exists, then `PREFIX/etc/config.site' if it exists. Or, you can set the `CONFIG_SITE' environment variable to the location of the site script. A warning: not all `configure' scripts look for a site script. Operation Controls ================== `configure' recognizes the following options to control how it operates. `--cache-file=FILE' Use and save the results of the tests in FILE instead of `./config.cache'. Set FILE to `/dev/null' to disable caching, for debugging `configure'. `--help' Print a summary of the options to `configure', and exit. `--quiet' `--silent' `-q' Do not print messages saying which checks are being made. `--srcdir=DIR' Look for the package's source code in directory DIR. Usually `configure' can determine that directory automatically. `--version' Print the version of Autoconf used to generate the `configure' script, and exit. `configure' also accepts some other, not widely useful, options.