Fix generation of tgt/fast build targets.
Commit 363caa2f (cmLocalGenerator: De-virtualize Configure().,
2015-05-30) moved the computation of HomeRelativeOutputPath from
Configure-time to Generate-time, because it is only used at
Generate-time. However, that commit caused the member for one
local generator to be computed immediately before generating with
that local generator, whereas previously the members of all local
generators were computed before generating any of them.
The HomeRelativeOutputPath is used by the GetRelativeTargetDirectory
method, which is called by the
cmGlobalUnixMakefileGenerator3::WriteConvenienceRules method. That
method is called by the
cmLocalUnixMakefileGenerator3::WriteLocalMakefile method when generating
for the top-most (ie, the first) local generator. At that point,
the HomeRelativeOutputPath is not yet computed.
Fix that by computing the member just before generating anything.
This will eventually be done in the cmLocalUnixMakefileGenerator3
constructor instead, but further refactoring is needed to make
that possible.
Refactor the local generator creation API to accept a
cmState::Snapshot. Adjust MakeLocalGenerator to use the 'current'
snapshot in cases where there is no parent. Create the snapshot
for subdirectories in cmMakefile::AddSubdirectory.
This means that snapshots are now created at the point of extending the tree,
as appropriate, and independently of the cmLocalGenerator and cmMakefile they
represent the state for.
When given the command line
tool a\ b c
mingw32-make incorrectly passes "a b" and "c" to the tool. When given
the command line
tool a\ b "c"
mingw32-make correctly passes "a\", "b", and "c" to the tool.
Since commit v3.1.0-rc1~861^2 (MSVC: Add properties to configure
compiler PDB files, 2014-02-24) we pass the compiler pdb option to
MS-style compiler tools as "/Fd<dir>\" but mingw32-make may consume
the backslash as escaping a following space as described above.
Workaround this problem by changing the backslash to a forward
slash as had been used prior to the above commit.
In commit v3.2.0-rc1~272^2~2 (Makefile: Fix rebuild with multiple custom
command outputs, 2014-12-05) we changed the generated makefile pattern
for multiple outputs from
out1: depends...
commands...
out2: out1
to
out1 out2: depends...
commands...
This was based on the incorrect assumption that make tools would treat
this as a combined output rule and run the command(s) exactly once for
them. It turns out that instead this new pattern is equivalent to
out1: depends...
commands...
out2: depends...
commands...
so the commands may be run more than once.
Some documents suggest using a "dedicated witness" stamp file:
stamp: depends...
rm -f stamp
touch stamp.tmp
commands...
mv stamp.tmp stamp
out1 out2: stamp
However, if the commands fail the error message will refer to the stamp
instead of any of the real outputs, which may be confusing to readers.
Also, this approach seems to have the same behavior of the original
approach that motiviated the above commit: multiple invocations are
needed to bring consumers of the outputs up to date.
Instead we can return to the original approach but add an explicit
touch to each extra output rule:
out1: depends...
commands...
out2: out1
touch -c out2
This causes make tools to recognize that all outputs have changed and
therefore to execute any commands that consume them.
Replace use of separate "cmake -E cmake_progress_report" and "cmake -E
cmake_echo_color" commands to report the progress and message portions
of build output lines with --progress-* options to the latter to print
everything with a single command. The line buffering of the stdout FILE
stream should cause the whole line to be printed with one atomic write.
This will avoid inter-mixing of line-wise messages from different
processes during a parallel build.
Given a rule of the form
out1 out2: dep1
out1 out2: dep2
Borland Make complains that there are multiple rules for "out1"
even though this works when there is only one output. Instead
generate
out1 out2: dep1 dep2
for Borland Make, but only when there are multiple outputs.
Fix the generated makefiles for custom commands with multiple outputs to
list all the outputs on the left hand side of the build rule. This is
much simpler and more reliable than the old multiple-output-pair
infrastructure.
Drop the CMAKE_NO_QUOTED_OBJECTS internal variable from the Makefile
generators. The underlying problem is with the Watcom linker, not with
WMake. The Watcom linker wants object files to be single-quoted. Add
<LINK-RULE>_USE_WATCOM_QUOTE platform information variables to tell the
generators to use Watcom-style single quotes for object files on link
lines.
On Windows, Watcom uses the GetCommandLine API to get the original
command-line string and do custom parsing that expects single quotes.
On POSIX systems, Watcom approximates the original command line by
joining all argv[] entries separated by a single space. Therefore we
need to double-quote the single-quoted arguments so that the shell does
not consume them and they are available for the parser to see.
Until now the cmCustomCommandGenerator was used only to compute the
command lines of a custom command. Generalize it to get the comment,
working directory, dependencies, and outputs of custom commands. Update
use in all generators to support this.
* The '-e' option has nothing to do with verbose output.
It is now properly handled by .ERASE directive in make file
* The '-s' option sets silent output globally, it cannot be switched off.
It is now handled only by .SILENT directive in make file directive
is simply controlled by a conditonal block.
Remove SilentNoColon member variable as it is no longer needed.
Casts from std::string -> cmStdString were high on the list of things
taking up time. Avoid such implicit casts across function calls by just
using std::string everywhere.
The comment that the symbol name is too long is no longer relevant since
modern debuggers alias the templates anyways and the size is a
non-issue since the underlying methods are generated since it's
inherited.
The code handling IMPLICIT_DEPENDS was only able to track a single file,
the latest file replaced earlier files in the list.
The documentation now mentions that the language has to be prefixed to
every file and the test now uses two implicit dependencies, where only
the second is modified to trigger re-running of the custom command.
Alex
Inspired-by: Michael Wild <themiwi@users.sourceforge.net>
Add a virtual cmGlobalGenerator::ComputeTargetObjects method invoked
during cmGeneratorTarget construction. Implement it in the Makefile
generator to pre-compute all object file names for each target. Use
the results during generation instead of re-computing it later.
Remove partial implementation added by commit ca0230a3 (check in initial
conv library stuff, 2007-02-16) since it was never finished. It does
not make sense for multi-configuration generators since no specific
build configuration is processed at CMake time.
The Watcom WMake tool has trouble running commands in paths that have
parentheses. We already convert most commands to a shortpath for Watcom
if the path contains a space, but the use of $(CMAKE_COMMAND) hides the
true path from that conversion. Factor the shortpath conversion code
out into a new ConvertShellCommand method. Teach it to convert paths
that contain parentheses as well as spaces. Use the new method to
convert the value of $(CMAKE_COMMAND) and other helper variables.
The workaround added by commit 7e92f0b4 (Hack to make echo command work
properly in mingw32-make, 2006-10-05) and updated by commit 69356d8a
(Juse use cmake -E echo instead of the native echo, 2006-10-13) no
longer seems necessary with modern mingw32-make. Furthermore it slows
performance due to the time spent loading a cmake process instead of
plain echo.
Stephen Kelly
Brad King
Ben Boeckel
Jiri Malak
Alex Neundorf
Nicolas Despres