* gnu/packages/glib.scm (glib): Update to 2.37.1. Add Bash and tzdata
as inputs. Remove `glib-tests-timezone.patch'. Augment `pre-build'
phase to set `TZDIR', `XDG_CACHE_HOME', and to modify makefiles to
honor $(TESTS_ENVIRONMENT).
* gnu/packages/patches/glib-tests-desktop.patch,
gnu/packages/patches/glib-tests-homedir.patch: Update.
* gnu/packages/patches/glib-tests-timezone.patch: Remove.
* Makefile.am (dist_patch_DATA): Update accordingly.
* gnu/packages/subversion.scm (subversion): Download from archive.apache.org,
where versions are kept for a longer period of time. Previously, we
downloaded from the mirrors, which keep only the most recent versions.
* gnu/packages/bash.scm (bash-light): Add (guix build gnu-cross-build)
to #:modules when (%current-target-system) is true.
Add `bash_cv_job_control_missing=no' to #:configure-flags
when (%current-target-system) is true.
This fixes resolution of DT_NEEDED entries in cross-built libraries.
For instance, if ltdl.so needs libdl.so and has it in its RUNPATH, then
libdl.so is searched for in the right place.
* gnu/packages/cross-base.scm (cross-binutils): Pass
`--with-sysroot=/no-such-path'.
* gnu/packages/guile.scm (guile-2.0): Add Bash as an input
when (%current-target-system) is true. Use %standard-cross-phases as
a basis when (%current-target-system) is true.
* gnu/packages/ncurses.scm (ncurses): Add `cross-pre-install-phase'.
Use different phases when (%current-target-system) is true.
* gnu/packages/readline.scm (readline): Use %standard-cross-phases as
the base when (%current-target-system) is true.
* gnu/packages/libffi.scm (libffi): Use %standard-cross-phases as the
base when cross-compiling. Add (guix build gnu-cross-build) to the
#:modules when cross-compiling. Improve synopsis.
* gnu/packages/gawk.scm (gawk)[arguments]: Use `set-shell-file-name'
phase that works when cross-compiling; use `%standard-cross-phases' as
the base when (%current-target-system) is true.
* gnu/packages/base.scm (coreutils): Remove Perl input
when (%current-target-system) is true. Use %standard-cross-phases as
the base when (%current-target-system) is true.
* guix/build-system/gnu.scm (inputs-search-paths): New procedure.
(standard-search-paths): Use it.
(expand-inputs): New procedure.
(standard-inputs): Use it.
(standard-cross-packages, standard-cross-inputs,
standard-cross-search-paths, gnu-cross-build): New procedures.
(gnu-build-system): Set `cross-build' field to `gnu-cross-build'.
* gnu/packages/cross-base.scm: Export `cross-gcc', `cross-binutils', and
`cross-libc'.
* guix/build/gnu-cross-build.scm: New file.
* Makefile.am (MODULES): Add it.
* gnu/packages/patches/gcc-cross-environment-variables.patch: Add two
hunks, most notably one that changes GCC to honor LIBRARY_PATH_ENV
when cross-compiling.
