Introduce non-deterministic ordering into goal and prerequisite
traversal to help tease out inconsistent failures that may happen
when running in parallel build mode.
Introduce second order into each dependency chain:
1. Existing order is syntactic order reachable via 'dep->next'
2. New order is shuffled order stored as 'dep->shuf' in each 'dep'
When updating goals and prerequisites and '--shuffle' is provided,
use the shuffled order to walk the graph. When automatic variable
are set always use the syntactic order of parameters.
* Makefile.am: Add new src/shuffle.c and src/shuffle.h file.
* build_w32.bat: Ditto.
* builddos.bat: Ditto.
* makefile.com: Ditto.
* po/POTFILES.in: Ditto.
* doc/make.texi: Add documentation for --shuffle.
* doc/make.1: Ditto.
* src/dep.h (DEP): Add the shuf pointer.
* src/filedef.h (struct file): Add was_shuffled flag.
* src/main.c: (shuffle_mode): Global flag for the shuffle mode.
(usage): Add the --shuffle option.
(switches): Ditto.
(main): Set shuffle_mode based on the command line parameter.
Reshuffle prerequisites if requested.
* src/remake.c (update_goal_chain): Walk the shuffled list if enabled.
(update_file_1): Ditto.
* src/shuffle.h: Provide an interface for shuffling prerequisites.
* src/shuffle.c: Implement option parsing and prerequisite shuffling.
* tests/scripts/options/shuffle: Test shuffle option and modes.
Move content from glob/* and config/* into standard GNU directory
locations lib/* and m4/*.
Install the gnulib bootstrap script and its configuration file, and
create a bootstrap.bat file for Windows. Update the README.git file
with new requirements and instructions for building from Git.
At this point we only install the alloca, getloadavg, and FDL modules
from gnulib. We keep our old glob/fnmatch implementation since the
gnulib versions require significant amounts of infrastructure which
doesn't exist on Windows yet. Further work is required here.
Due to a problem with gnulib's version of getloadavg, we need to bump
the minimum required version of automake to 1.16.1 unfortunately.
* README.git: Update instructions
* NEWS: Move developer news to a separate section
* configure.ac: Update for use with gnulib modules
* bootstrap: Bootstrap from Git workspace (import from gnulib)
* bootstrap.conf: Bootstrap configuration for GNU make
* bootstrap.bat: Bootstrap from Git workspace for Windows
* gl/modules/make-glob: Support our local fnmatch/glob implementation
* config/acinclude.m4: Move to m4/
* config/dospaths.m4: Move to m4/
* glob/fnmatch.c: Move to lib/
* glob/fnmatch.h.in: Move to lib/
* glob/glob.c: Move to lib/
* glob/glob.h.in: Move to lib/
* Makefile.am: Update for new directories
* build.template: Update for new directories
* build_w32.bat: Update for new directories
* builddos.bat: Update for new directories
* maintMakefile: Update for new directories
* makefile.com: Update for new directories
* mk/Amiga.mk: Update for new directories
* mk/Posix.mk.in: Update for new directories
* mk/VMS.mk: Update for new directories
* mk/Windows32.mk: Update for new directories
* mk/msdosdjgpp.mk: Update for new directories
* po/LINGUAS: One language per line (needed by gnulib)
* INSTALL: Remove (obtained from gnulib)
* src/alloca.c: Remove (obtained from gnulib)
* src/getloadavg.c: Remove (obtained from gnulib)
* po/Makevars: Remove (created by bootstrap)
* config/*: Remove leftover files
* glob/*: Remove leftover files
This also includes fixing the most of the exit handling code for VMS.
Self tests:
Previously about 94 Tests in 36 categories fail.
Now about 45 tests in 22 categories fail.
Because some tests do not properly clean up, the number of tests that
fail can vary by one or two test cases between consecutive runs.
* Makefile.am: Add new VMS files.
* job.c: add prototype for vms_strsignal().
* job.c: (child_error): Remove VMS specific code as no longer needed.
* job.c: (reap_children): The VMS specific code was setting the
status to 0 instead of setting it to the proper exit status.
* job.h: Add vms_launch_status to struct child.
* main.c: (main): Use environment variables for options to use MCR
* instead of a foreign command, and to always use command files for
subprocesses.
For VMS use (set_program_name) routine which is common to ports of
other GNU packages to VMS to set the program name used internally.
Use (vms_putenv_symbol) to set up symbols to be visible in child
programs, including recursive make launched by execve()
Start of Bash shell detection code for VMS.
* makefile.com: Need nested_include=none for building on VMS search
lists. Add vms_progname, vms_exit, and vms_export_symbol.
* makefile.vms: Need nested_include=none for building on VMS search
lists. Add vms_progname, vms_exit, vms_export_symbol.
* makeint.h: Make sure non-standard "VMS" macro is defined. Add
prototypes for new VMS routines. Remove VMS-specific failure codes.
* vmsjobs.c: Add VMS POSIX exit code constants.
(_is_unixy_shell): Detect Bash shell.
(vms_strsignal): simulate strsignal() on VMS.
(vmsHandleChildTerm): fix to properly report failed LIB$SPAWN() exit
status codes. Remove code that duplicated code in job.c.
(child_execute_job): Export environment symbols before spawning a
child and restore afterward unless option to use command files for
subprocesses is set. Improve handling of UNIX null commands ":".
* vms_exit.c: Provides vms_exit() to detect if an exit code is UNIX
or VMS, and converts the UNIX code into a VMS exit code.
* vms_export_symbol.c: Routines to create DCL symbols that work like
shell aliases or exported shell symbols and clean them up on exit.
* vms_export_symbol_test.com: Unit test for vms_export_symbol.c
* vms_progname.c: New file: VMS specific replace for progname.c that
is used in some GNU projects.
* config.h-vms.template: make sure the CRTL version is known
* makefile.com: always compile/link the guile module, remove VAXCRTL
parameter, new LIST parameter
* makefile.vms: always compile/link the guile module, use more
complete dependencies
* prepare_vms.com: helper to create a VMS config file when building
from a snapshot of the repository
