This is the list of functions used in jhalfs, excluding BLFS tool functions
and functions defined in {C,H}LFS/master.sh.
I felt the need for documenting it when trying to add package management.
Functions are listed in alphabetical order, with a short description and the
file where they are defined.

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install_blfs_tools():
From common/libs/func_install_blfs.
Description: Copy the needed files to `BLFS_ROOT'. Initialize
the package tracking. Generates a `configuration' file from
the tool dependencies settings, and use it to generate
scriptlets from the blfs book. Uses those scriptlets to download the
needed tarballs. Then generates a Makefile for building the dependencies.
Called by: jhalfs
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get_sources():
From common/libs/func_download_pkgs.
Description:  Downloads packages if `GETPKG' is `y'. Writes package name
and md5 checksum to `MISSING_FILES.DMP' if a package cannot be found in
`$SRC_ARCHIVE' and cannot be downloaded, or if md5 checksum does not agree
book's one. If `MISSING_FILES.DMP' is not empty at the end of the process,
disable the excution of the makefile.
Actually, if `$BUILDDIR/sources' does not exist, it is not created if
`GETPKG' is `n'. And an empty or non existent `$BUILDDIR/sources' is
not flagged...
If `GETPKG' is `y', removes `MD5SUMS', `MISSING_FILES.DMP', and `urls.lst'
from `$BUILDDIR/sources' and generates them in the course of the process.
Called by: get_book and extract_commands
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gs_wrt_message():
From common/libs/func_download_pkgs.
Description: internal function in get_sources. Writes a message to the screen
and a package name to `MISSING_FILES.DMP'.
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create_urls():
From common/libs/func_download_pkgs.
Description: Runs xsltproc with stylesheet urls.xsl on chapter 3 of the
book. Add BLFS dependencies and custom dependencies if `BLFS_TOOLS' is `y'
and `CUSTOM_TOOLS' is `y' respectively.
Called by: get_sources
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wrt_CustomTools_target():
From common/libs/func_custom_pkgs.
Description:  Add users supplied scripts to `$JHALFSDIR/custom-tools', with
corresponding entry in the Makefile.
TODO: Add package management (instructions to user and Makefile entry)
Called by: All master.sh `build_Makefile'.
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add_CustomToolsURLS():
From common/libs/func_custom_pkgs.
Description:  Add any users supplied scripts URL information to urls.lst
Called by: create_urls
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wrt_Makefile_header():
From common/libs/func_wrt_Makefile.
Description: Writes the beginning of the Makefile into $MKFILE, which created
or erased before.
Called by: All master.sh `build_Makefile'.
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get_package_tarball_name():
From common/libs/func_wrt_Makefile.
Arguments: $1 contains the script_name
Description: Retrieves the tarball name from `pkg_tarball_list' by comparing
script-name to the beginning of a line in the list. Writes the name found
to stdout.
Implements the behavior described in README.CUSTOM, that is, if script_name
begins with d-, strip that part.
Called by: various functions in master.sh
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LUSER_wrt_target():
From common/libs/func_wrt_Makefile.
Arguments: $1 contains target name; $2 contains dependency(ies)
Description:  Add lines in the Makefile, which create target and
initialize log file.
LUSER version uses $MOUNT_PT in absolute path names.
Called by: chapter5_Makefiles and chapter6_Makefiles in LFS/master.sh
and other master.sh
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CHROOT_wrt_target():
From common/libs/func_wrt_Makefile.
Arguments: $1 contains target name; $2 contains dependency(ies)
Description:  Add lines in the Makefile, which create target and
initialize log file.
CHROOT version uses / in absolute path names.
Called by: chapter6_Makefiles and chapter78_Makefiles in LFS/master.sh
and other functions in other master.sh
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LUSER_wrt_unpack():
From common/libs/func_wrt_Makefile.
Arguments: $1 contains tarball name; $2 contains 1 if the existing directory
is to be presserved.
Description: Add lines in the Makefile, which unpack and set 'ROOT' var and
remove existing dir if $2 != 1
LUSER version uses $MOUNT_PT in absolute path names.
Uses: Makefile functions remove_existing_dirs, unpack, get_pkg_root.
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CHROOT_Unpack():
From common/libs/func_wrt_Makefile.
Arguments: $1 contains tarball name; $2 contains 1 if the existing directory
is to be presserved.
Description: Add lines in the Makefile, which unpack and set 'ROOT' var and
remove existing dir if $2 != 1
CHROOT version uses / in absolute path names.
Uses: Makefile functions remove_existing_dirs2, unpack2, get_pkg_root2.
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LUSER_wrt_test_log():
From common/libs/func_wrt_Makefile.
Description:  Add lines in the Makefile, which initialize testsuite
log file.
LUSER version uses $MOUNT_PT in absolute path names.
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CHROOT_wrt_test_log():
From common/libs/func_wrt_Makefile.
Description:  Add lines in the Makefile, which initialize testsuite
log file.
CHROOT version uses / in absolute path names.
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wrt_RunAsRoot():
From common/libs/func_wrt_Makefile.
Description:  Some scripts must be run as root..
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LUSER_wrt_RunAsUser():
From common/libs/func_wrt_Makefile.
Description:  Calculate time with perl, footer to log file
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CHROOT_wrt_RunAsRoot():
From common/libs/func_wrt_Makefile.
Description:
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LUSER_wrt_CopyFstab():
From common/libs/func_wrt_Makefile.
Description:
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CHROOT_wrt_CopyFstab():
From common/libs/func_wrt_Makefile.
Description:
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LUSER_wrt_TouchTimestamp():
From common/libs/func_wrt_Makefile.
Description:
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CHROOT_wrt_TouchTimestamp():
From common/libs/func_wrt_Makefile.
Description:
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LUSER_wrt_LogNewFiles():
From common/libs/func_wrt_Makefile.
Description:
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CHROOT_wrt_LogNewFiles():
From common/libs/func_wrt_Makefile.
Description:
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LUSER_RemoveBuildDirs():
From common/libs/func_wrt_Makefile.
Description:
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CHROOT_wrt_RemoveBuildDirs():
From common/libs/func_wrt_Makefile.
Description:
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wrt_touch():
From common/libs/func_wrt_Makefile.
Description:
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wrt_compare_targets():
From common/libs/func_compare.sh.
Description:
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wrt_system_build():
From common/libs/func_compare.sh.
Description:
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wrt_compare_work():
From common/libs/func_compare.sh.
Description:
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wrt_do_ica_work():
From common/libs/func_compare.sh.
Description:
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wrt_logs():
From common/libs/func_compare.sh.
Description:
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validate_config():
From common/libs/func_validate_configs.sh.
Description:  Are the config values sane (within reason)
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  write_error_and_die():
From common/libs/func_validate_configs.sh.
Description:
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  validate_file():
From common/libs/func_validate_configs.sh.
Description:
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  validate_dir():
From common/libs/func_validate_configs.sh.
Description:
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get_book():
From common/libs/func_book_parser.
Description:
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extract_commands():
From common/libs/func_book_parser.
Description:
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create_package_list():
From common/libs/func_book_parser.
Description:
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check_version():
From common/libs/func_check_version.sh.
Description:
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  write_error_and_die():
From common/libs/func_check_version.sh.
Description:
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check_prerequisites():
From common/libs/func_check_version.sh.
Description:
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write_or_exit():
From common/progress_bar.sh.
Description:
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no_empty_builddir():
From common/common-functions.
Description:
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run_make():
From common/common-functions.
Description:
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clean_builddir():
From common/common-functions.
Description:
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simple_error():
From jhalfs.
Description:  Basic error trap.... JUST DIE
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see_ya():
From jhalfs.
Description:
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chapter4_Makefiles():
From LFS/master.sh.
Description:
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chapter5_Makefiles():
From LFS/master.sh.
Description:
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chapter6_Makefiles():
From LFS/master.sh.
Description:
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chapter78_Makefiles():
From LFS/master.sh.
Description:
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build_Makefile():
From LFS/master.sh.
Description:
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validate_opt_settings():
From optimize/optimize_functions.
Description:  Show optimize setting and wait user agreement
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wrt_optimize():
From optimize/optimize_functions.
Description:  Apply pkg specific opt's to build
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wrt_makeflags():
From optimize/optimize_functions.
Description:  Apply MAKEFLAGS to build
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