Since commit 2ae72ef74b (Xcode: Enable multi-arch TARGET_OBJECTS genex
in [INTERFACE_]LINK_LIBRARIES, 2021-05-26, v3.21.0-rc1~126^2) the
TARGET_OBJECTS genex, when referenced for linking, is now evaluated with
EvaluateForBuildsystem enabled. This causes the object file paths to be
computed with a buildsystem-specific placeholder for the configuration.
This is normally fine because the placeholder will be evaluated by the
native buildsystem tool using the proper configuration. However, the
Ninja Multi-Config generator's `${CONFIGURATION}` placeholder may not
have the correct value for cross-config object files. Switch back to
using the per-config location of each object file for this generator.
Fixes: #22436
Only generate a graph dependency between a custom command and
a target when the custom command queries for the file path
of an artifact of the target.
This makes generator expressions such as `TARGET_FILE_DIR`
behave the same way as `TARGET_PROPERTY` which never generated
a graph dependency.
When genex $<TARGET_PROPERTY:...> for properties like INCLUDE_DIRECTORIES
is evaluated as part of add_custom_command or add_custom_target,
genex $<COMPILE_LANGUAGE> and $<COMPLIE_LANG_AND_ID> should be supported.
Fixes: #20926
These generator expressions can only be used in link options properties.
These expressions return the arguments respectively for device and host link
step, otherwise return an empty string.
Add entries in Modules and Modules/Platform to support
Objective-C++ compiler determination and identification.
Add Modules to check Objective-C++ compiler flags, source
compilations, program checks, etc...
Use OBJCXX as the designator of the language, eg:
project(foo OBJCXX)
Add various tests for Objective-C++ language features. Add
tests to preserve C++ handling of .M and .mm files when
Objective-C++ is not a configured language.
Co-authored-by: Cristian Adam <cristian.adam@gmail.com>
Simplify by re-ordering parameters of cmCompiledGeneratorExpression::Evaluate
so that frequently used parameters are before less frequently used parameters.
This allows with little extra arguments to get rid of one Evaluate overload,
which makes it easier to implement the cmGeneratorExpression::Evaluate utility.
The latter would otherwise need four overloads.
The quiet flag is false for all but one call to Evaluate. Make the quiet flag
a setter of cmCompiledGeneratorExpression to be able to remove it from the
Evaluate function signature.
Provide a standardized way to handle the C++ "standard" headers
customized to be used with current CMake C++ standard constraints.
Offer under directory `cm` headers which can be used as direct
replacements of the standard ones. For example:
#include <cm/string_view>
can be used safely for CMake development in place of the `<string_view>`
standard header.
Fixes: #19491
This replaces `std::ostringstream`, when it is written to only once.
If the single written argument was numeric, `std::to_string` is used instead.
Otherwise, the single written argument is used directly instead of the
`std::ostringstream::str()` invocation.
This patch is generated by a python script that uses regular expressions to
search for string concatenation patterns of the kind
```
std::string str = <ARG0>;
str += <ARG1>;
str += <ARG2>;
...
```
and replaces them with a single `cmStrCat` call
```
std::string str = cmStrCat(<ARG0>, <ARG1>, <ARG2>, ...);
```
If any `<ARGX>` is itself a concatenated string of the kind
```
a + b + c + ...;
```
then `<ARGX>` is split into multiple arguments for the `cmStrCat` call.
If there's a sequence of literals in the `<ARGX>`, then all literals in the
sequence are concatenated and merged into a single literal argument for
the `cmStrCat` call.
Single character strings are converted to single char arguments for
the `cmStrCat` call.
`std::to_string(...)` wrappings are removed from `cmStrCat` arguments,
because it supports numeric types as well as string types.
`arg.substr(x)` arguments to `cmStrCat` are replaced with
`cm::string_view(arg).substr(x)`
This replaces invocations of
- `cmSystemTools::IsInternallyOn` with `cmIsInternallyOn`
- `cmSystemTools::IsNOTFOUND` with `cmIsNOTFOUND`
- `cmSystemTools::IsOn` with `cmIsOn`
- `cmSystemTools::IsOff` with `cmIsOff`
