Age | Commit message (Collapse) | Author | Files | Lines |
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The split one was just too much of an eye-sore in the logs.
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Note that currently this has to be enabled with an explicit --diag-color
option. In the future the plan is to enable it by default if supported.
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In particular, we now always print error message on non-0 exit except
in cases where such exit is ignored.
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in script
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Specifically, now we can do:
x = [uint64] 0x0000ffff
cxx.poptions += "-DOFFSET=$x" # -DOFFSET=65535
cxx.poptions += "-DOFFSET=$string($x, 16)" # -DOFFSET=0xffff
cxx.poptions += "-DOFFSET=$string($x, 16, 8)" # -DOFFSET=0x0000ffff
Note that there is no hex notation support for the int64 (signed) type.
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Seeing that std::map is becoming a common Buildfile variable type.
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See the config.cxx.translate_include variable documentation in cxx/init.cxx
for details.
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This allows one to use all of the properties of iterators to manipulate the
found option.
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Specifically, now config.<tool> (like config.cli) is handled by the import
machinery (it is like a shorter alias for config.import.<tool>.<tool>.exe
that we already had). And the cli module now uses that instead of custom
logic.
This also adds support for uniform tool metadata extraction that is handled by
the import machinery. As a result, a tool that follows the "build2 way" can be
imported with metadata by the buildfile and/or corresponding module without
any tool-specific code or brittleness associated with parsing --version or
similar outputs. See the cli tool/module for details.
Finally, two new flavors of the import directive are now supported: import!
triggers immediate importation skipping any rule-specific logic while import?
is optional import (analogous to using?). Note that optional import is always
immediate. There is also the import-specific metadata attribute which can be
specified for these two import flavors in order to trigger metadata
importation. For example:
import? [metadata] cli = cli%exe{cli}
if ($cli != [null])
info "cli version $($cli:cli.version)"
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The new config.export variable specifies the alternative file to write the
configuration to as part of the configure meta-operation. For example:
$ b configure: proj/ config.export=proj-config.build
The config.export value "applies" only to the projects on whose root scope it
is specified or if it is a global override (the latter is a bit iffy but we
allow it, for example, to dump everything to stdout). This means that in order
to save a subproject's configuration we will have to use a scope-specific
override (since the default will apply to the outermost amalgamation). For
example:
$ b configure: subproj/ subproj/config.export=.../subproj-config.build
This could be somewhat unnatural but then it will be the amalgamation whose
configuration we normally want to export.
The new config.import variable specifies additional configuration files to be
loaded after the project's default config.build, if any. For example:
$ b create: cfg/,cc config.import=my-config.build
Similar to config.export, the config.import value "applies" only to the
project on whose root scope it is specified or if it is a global override.
This allows the use of the standard override "positioning" machinery (i.e.,
where the override applies) to decide where the extra configuration files are
loaded. The resulting semantics is quite natural and consistent with command
line variable overrides, for example:
$ b config.import=.../config.build # outermost amalgamation
$ b ./config.import=.../config.build # this project
$ b !config.import=.../config.build # every project
Both config.export and config.import recognize the special `-` file name as an
instruction to write/read to/from stdout/stdin, respectively. For example:
$ b configure: src-prj/ config.export=- | b configure: dst-prj/ config.import=-
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Failed that, we may have long periods of seemingly nothing happening (e.g.,
during implicit bdep sync) while we quietly update the module, which may look
like things have hung up.
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Such options are (normally) not overridden by buildfiles and are passed
last (after cc.coptions and {c,cxx}.coptions) in the resulting command
lines. They are also cross-hinted between config.c and config.cxx. For
example:
$ b config.cxx="g++ -m64"
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Without this extra logic recursive invocation of the build system (e.g., in
tests) will fail to obtain the full environment.
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In particular, this removes the requirement to build from the Visual Studio
command prompt. Note that since MSVC compiler binaries are target-specific
(i.e., there are no -m32/-m64 options nor something like /MACHINE), in this
case we default to a 64-bit build (a 32-bit build can still be achieved by
running from a suitable command prompt).
Finally, this mechanism is also used to find Clang bundled with MSVC.
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This way any dependent tools (such as mt.exe that is invoked by link.exe)
are first search for in there.
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