6.22.1 Configuration, Build and Installation

The following procedures and variables provide information about how Guile was configured, built and installed on your system.

Scheme Procedure: version

Scheme Procedure: effective-version

Scheme Procedure: major-version

Scheme Procedure: minor-version

Scheme Procedure: micro-version

C Function: scm_version ()

C Function: scm_effective_version ()

C Function: scm_major_version ()

C Function: scm_minor_version ()

C Function: scm_micro_version ()

Return a string describing Guile’s full version number, effective version number, major, minor or micro version number, respectively. The effective-version function returns the version name that should remain unchanged during a stable series. Currently that means that it omits the micro version. The effective version should be used for items like the versioned share directory name i.e. ‘/usr/share/guile/1.6/’

(version) ⇒ "1.6.0" (effective-version) ⇒ "1.6" (major-version) ⇒ "1" (minor-version) ⇒ "6" (micro-version) ⇒ "0"

Scheme Procedure: %package-data-dir

C Function: scm_sys_package_data_dir ()

Return the name of the directory under which Guile Scheme files in general are stored. On Unix-like systems, this is usually ‘/usr/local/share/guile’ or ‘/usr/share/guile’.

Scheme Procedure: %library-dir

C Function: scm_sys_library_dir ()

Return the name of the directory where the Guile Scheme files that belong to the core Guile installation (as opposed to files from a 3rd party package) are installed. On Unix-like systems this is usually ‘/usr/local/share/guile/GUILE_EFFECTIVE_VERSION’ or ‘/usr/share/guile/GUILE_EFFECTIVE_VERSION’;

for example ‘/usr/local/share/guile/1.6’.

Scheme Procedure: %site-dir

C Function: scm_sys_site_dir ()

Return the name of the directory where Guile Scheme files specific to your site should be installed. On Unix-like systems, this is usually ‘/usr/local/share/guile/site’ or ‘/usr/share/guile/site’.

Variable: %load-path

List of directories which should be searched for Scheme modules and libraries. %load-path is initialized when Guile starts up to (list (%site-dir) (%library-dir) (%package-data-dir)), prepended with the contents of the GUILE_LOAD_PATH environment variable, if it is set.

Scheme Procedure: parse-path path [tail]

C Function: scm_parse_path (path, tail)

Parse path, which is expected to be a colon-separated string, into a list and return the resulting list with tail appended. If path is #f, tail is returned.

Scheme Procedure: search-path path filename [extensions [require-exts?]]

C Function: scm_search_path (path, filename, rest)

Search path for a directory containing a file named filename. The file must be readable, and not a directory. If we find one, return its full filename; otherwise, return #f. If filename is absolute, return it unchanged. If given, extensions is a list of strings; for each directory in path, we search for filename concatenated with each extension. If require-exts? is true, require that the returned file name have one of the given extensions; if require-exts? is not given, it defaults to #f.

For compatibility with Guile 1.8 and earlier, the C function takes only three arguments

Variable: %guile-build-info

Alist of information collected during the building of a particular Guile. Entries can be grouped into one of several categories: directories, env vars, and versioning info.

Briefly, here are the keys in %guile-build-info, by group:

directories

srcdir, top_srcdir, prefix, exec_prefix, bindir, sbindir, libexecdir, datadir, sysconfdir, sharedstatedir, localstatedir, libdir, infodir, mandir, includedir, pkgdatadir, pkglibdir, pkgincludedir

env vars

LIBS

versioning info

guileversion, libguileinterface, buildstamp

Values are all strings. The value for LIBS is typically found also as a part of pkg-config --libs guile-2.0 output. The value for guileversion has form X.Y.Z, and should be the same as returned by (version). The value for libguileinterface is libtool compatible and has form CURRENT:REVISION:AGE (see (libtool)Versioning section ‘Library interface versions’ in GNU Libtool). The value for buildstamp is the output of the command ‘date -u +'%Y-%m-%d %T'’ (UTC).

In the source, %guile-build-info is initialized from libguile/libpath.h, which is completely generated, so deleting this file before a build guarantees up-to-date values for that build.

Variable: %host-type

The canonical host type (GNU triplet) of the host Guile was configured for, e.g., "x86_64-unknown-linux-gnu" (see (autoconf)Canonicalizing section ‘Canonicalizing’ in The GNU Autoconf Manual).