This pointer is almost never needed, and it increases the size of the filedef
struct for all files (of which there are a huge number for large builds).
Instead keep a bit field marking whether the file is a loaded object and if so
call a new function to unload it. In load.c we keep a simple linked list of
loaded objects (of which there will be very few typically) and their dlopen()
pointers.
If -R is set in the makefile and not the command line, then go through all the
default variables and undefine them. If -r is set in the makefile and not in
the command line, then remove all .SUFFIX prefixes (unless the user set it)
and SUFFIX variable setting. In -p mode don't print builtins.
This allows you to write portable makefiles that set GNU make-specific command
line options in the environment or makefile: add them to GNUMAKEFLAGS instead
of MAKEFLAGS and they will be seen by GNU make but ignored by other
implementations of make.
This mode replaces the previous heuristic setting enabled with -O, where we
would log directory enter/leave for each synchronized output. Now we only
do that if --trace=dir is given.
job.c (child_out): Output the newline following the message
before fllush-ing the stream. Avoids displaying the following
failure message, which goes to stderr, on the same line.
gnumake.h (GMK_EXPORT) [_WIN32]: Move the dllexport declaration
here from makeint.h.
makeint.h (GMK_BUILDING_MAKE) [WINDOWS32]: Define before
including gnumake.h.
On 04/30/2013 05:11 PM, Stefano Lattarini wrote:
> * configure.ac (AM_INIT_AUTOMAKE): Here. The future major Automake
> version 2.0 (ETA about one, one and half year from now) will likely
> enable them by default, so better prepare ourselves.
>
Please drop this patch. Enabling 'subdir-objects' would require
sublter changes to several other parts of the build system that I
don't know how to test properly. We should only enable the
'silent-rules' option for the moment. The updated patch below
does this.
Sorry for the noise,
Stefano
---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ----
>From 46623411f017a447caa8fe75b3b42ec2fbeac458 Mon Sep 17 00:00:00 2001
Message-Id: <46623411f017a447caa8fe75b3b42ec2fbeac458.1367335124.git.stefano.lattarini@gmail.com>
From: Stefano Lattarini <stefano.lattarini@gmail.com>
Date: Tue, 30 Apr 2013 16:30:04 +0200
Subject: [PATCH] build: enable the 'silent-rules' automake options
* configure.ac (AM_INIT_AUTOMAKE): Here. The future major Automake
version 2.0 (ETA about one, one and half year from now) will enable
it by default, so better prepare ourselves.
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
Older versions of those tools should be considered fully obsolete.
Also, GNU make already requires Gettext >= 0.18.1, which has been
released six months after Automake 1.11.1 and two years after
Autoconf 2.62; so the new requirement shouldn't be problematic
for people already bootstrapping GNU make from the Git repository.
* configure.ac (AC_PREREQ): Require Autoconf 2.62 or later.
(AM_INIT_AUTOMAKE): Require Automake 1.11.1 or later (1.11 had
some serious bugs, and should not be used).
Copyright-paperwork-exempt: yes
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
GCC was giving us warnings, most OS's now just run fork() when you call
vfork(), and looking at the standard definition of vfork() we are a long way
from using it safely anyway: you're not allowed to even call a function before
you exec().
* doc/make.texi: Here. It was sufficient to change an '@itemx'
into an '@item'.
Copyright-paperwork-exempt: yes
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
GNU make already assume C89 or later throughout the codebase, and
that preprocessor conditional was no longer used anyway.
* configure.ac: Remove AC_DEFINE of HAVE_ANSI_COMPILER.
* config.ami.template: Remove #define of HAVE_ANSI_COMPILER.
* config.h-vms.template: Likewise.
* config.h.W32.template: Likewise.
* configh.dos.template: Likewise.
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
If output-sync is enabled, have make write the command line to the temp file
instead of printing it directly to the screen to ensure that the output is
ordered properly. Also, remove extraneous enter/leave operations by having
them printed directly when dumping temp file output.
If we are not going to sync a command line then dump any collected output
first to preserve ordering. Do some code cleanup:
* Move the handle init to a separate function.
* Move the temp file truncation to the output function.
* Remember whether we sync in a variable for readability.
* Handle EINTR and short writes in child_out().
* Always call sync_output() in case output_sync was changed due to error.
job.c (start_job_command): Make the condition for creating a
temporary output file be identical to the Posix code branch.
Suggested by Frank Heckenbach <f.heckenbach@fh-soft.de>.
w32/subproc/sub_proc.c: Include makeint.h. Remove a private
incompatible prototype of xmalloc.
(batch_file_with_spaces): New function, detects Windows batch
files whose names include whitespace characters.
(process_begin): If exec_name is a batch file with whitespace
characters in its name, pass NULL as the first argument to
CreateProcess. This avoids weird failures due to buggy quoting by
CreateProcess. For the details, see the discussion starting at
http://lists.gnu.org/archive/html/make-w32/2013-04/msg00008.html.
load.c (load_object, load_file): Accept an additional argument
DLP and return in it a pointer that can be used to unload the
dynamic object.
read.c (eval): Call load_file with an additional argument, and
record the pointer returned there in the 'struct file' object of
dynamic objects in that object's 'struct file'.
commands.c (execute_file_commands): Unload dynamic objects
before remaking them, to avoid failure to remake if the OS doesn't
allow overwriting objects that are in use.
filedef.h (struct file): New member dlopen_ptr.
gnumake.h (GMK_EXPORT): Define to dllexport/dllimport
decorations for Windows and to nothing on other platforms.
(gmk_eval, gmk_expand, gmk_add_function): Add GMK_EXPORT qualifier
to prototypes.
makeint.h (MAIN): Define before including gnumake.h, to give
correct dllexport decorations to exported functions.
(load_file): Adjust prototype.
loadapi.c: Don't include gnumake.h, since makeint.h already
includes it, and takes care of defining MAIN before doing so.
build_w32.bat (LinkGCC): Produce an import library for functions
exported by Make for loadable dynamic objects.
w32/compat/posixfcn.c (dlclose): New function.
w32/include/dlfcn.h (dlclose): Add prototype.
scripts/features/load: Fix signatures of testload_gmk_setup and
explicit_setup, to bring them in line with the documentation.
w32/include/dlfcn.h: New file.
w32/compat/posixfcn.c: Include dlfcn.h.
(dlopen, dlerror, dlsym) [MAKE_LOAD]: New functions, in support of
dynamic loading.
config.h.W32.template (MAKE_LOAD): Define.
load.c (load_object) [HAVE_DOS_PATHS]: Support backslashes and
drive letters in file names of dynamic objects.
job.c (construct_command_argv_internal) [WINDOWS32]: Return
right after generating new_argv for one_shell case. This fixes
the Windows build for both Unixy shell and stock Windows shells.
Enhance the child_error() function so that it will write error output to the
child's sync output buffer, if it exists. If it doesn't the output goes to
stdout/stderr.
We've required support for ANSI C (ISO C 89) or better for quite a while. Get
rid of the old varags.h, doprnt() stuff and simply assume ANSI C variadic
function capability and basic C runtime library support (vfprintf, vsprintf,
etc.)
dir.c (local_stat) [WINDOWS32]: Use the wrapper on MS-Windows.
If the argument ends in "dir/.", make sure the parent dir exists
and is indeed a directory. Fixes Savannah bug #37065.
A new flag to the -O/--output-sync, "job", selects a per-job (that is, per
line of a recipe) output synchronization. To support this move the close of
the temp file out of the sync_output() function and don't do it until we free
the child, since we may call sync_output() multiple times in a given recipe.
When we set up for a new temp file, if we're in per-job mode we truncate the
file and seek to the beginning to re-use it for every job.
It should be sufficient, now, to write a new version of the load_object()
function. That function won't be called unless we really want to load, so all
checking and parsing is taken care of before that.
read.c (record_files): Pay attention to .ONESHELL in MS-Windows.
job.c (construct_command_argv_internal): Support .ONESHELL on
MS-Windows, when the shell is not a Unixy shell.
w32/compat/posixfcn.c: New file, with emulations of Posix
functions and Posix functionality for MS-Windows.
w32/subproc/sub_proc.c: Include io.h.
(process_noinherit): New function, forces a file descriptor to not
be inherited by child processes.
(process_easy): Accept two additional arguments, and use them to
set up the standard output and standard error handles of the child
process.
w32/include/sub_proc.h (process_easy): Adjust prototype.
(process_noinherit): Add prototype.
read.c [WINDOWS32]: Include windows.h and sub_proc.h.
makeint.h (LOCALEDIR) [WINDOWS32}: Define to NULL if not
defined. This is needed because the MS-Windows build doesn't have
a canonical place for LOCALEDIR.
(WIN32_LEAN_AND_MEAN) [WINDOWS32]: Define, to avoid getting from
windows.h header too much stuff that could conflict with the code.
main.c <sync_mutex>: New static variable.
<switches>: Add support for "--sync-mutex" switch.
(decode_output_sync_flags): Decode the --sync-mutex= switch.
(prepare_mutex_handle_string) [WINDOWS32]: New function.
(main): Add "output-sync" to .FEATURES.
job.h (CLOSE_ON_EXEC) [WINDOWS32]: Define to call
process_noinherit.
(F_GETFD, F_SETLKW, F_WRLCK, F_UNLCK, struct flock) [WINDOWS32]:
New macros.
(RECORD_SYNC_MUTEX): New macro, a no-op for Posix platforms.
(sync_handle_t): New typedef.
job.c <sync_handle>: Change type to sync_handle_t.
(FD_NOT_EMPTY): Seek to the file's end. Suggested by Frank
Heckenbach <f.heckenbach@fh-soft.de>.
(pump_from_tmp_fd) [WINDOWS32]: Switch to_fd to binary mode for
the duration of this function, and then change back before
returning.
(start_job_command) [WINDOWS32]: Support output_sync mode on
MS-Windows. Use a system-wide mutex instead of locking
stdout/stderr. Call process_easy with two additional arguments:
child->outfd and child->errfd.
(exec_command) [WINDOWS32]: Pass two additional arguments, both
-1, to process_easy, to adjust for the changed function signature.
function.c (windows32_openpipe) [WINDOWS32]: This function now
returns an int, which is -1 if it fails and zero otherwise. It
also calls 'error' instead of 'fatal', to avoid exiting
prematurely.
(func_shell_base) [WINDOWS32]: Call perror_with_name if
windows32_openpipe fails, now that it always returns. This avoids
a compiler warning that error_prefix is not used in the MS-Windows
build.
config.h.W32.template (OUTPUT_SYNC): Define.
build_w32.bat: Add w32/compat/posixfcn.c to compilation and
linking commands.
From Frank Heckenbach <f.heckenbach@fh-soft.de>:
job.c (sync_output): Don't discard the output if
acquire_semaphore fails; instead, dump the output unsynchronized.
build_w32.bat: Improve. Remove 'setlocal', as it isn't
supported on Windows 9X. Add --help and usage instructions.
Support both debug and optimized builds with GCC under --debug.
If building out of Git repo, always produce config.h, and edit
gmk-default.scm into gmk-default.h.
w32/subproc/build.bat: Support debug and optimized builds with
GCC.
