These directories are used to direct collators for Fortran and C++
modules to consume dependent module information to properly collate.
However, the consumption of these files merely checks for existence of
the file, not whether they are actually needed anymore.
The problem arises when a target has Fortran or C++ modules at point A,
a build occurs populating this file, and then the target is updated to
no longer have potential modules. The `DependInfo.make` (for
`Makefiles`) or `<LANG>DependInfo.json` (for `Ninja`) files still exist
as they are never guaranteed to be cleaned up. This can introduce stale
information to the build which may cause a false-positive compilation if
a module file happens to still exist and gets found this way.
Instead, query the `linked-target-dirs` using the language in question
and only add the directory if it contains potential sources for modules
coming from the language in question.
The properties added by commit 4a62e3d97c (macOS: Add
OSX_COMPATIBILITY_VERSION and OSX_CURRENT_VERSION properties,
2020-01-24, v3.17.0-rc1~80^2~1) are general-purpose for all platforms
using Mach-O formats and not just on OS X. Rename them accordingly.
The properties are new to the CMake 3.17 release so we can rename
them without compatibility concerns.
Fixes: #20442
Since commit 0f150b69d3 (AIX: Explicitly compute shared object exports
for both XL and GNU, 2019-07-11, v3.16.0-rc1~418^2~2) we always export
all symbols from shared libraries by default. Add a new target property
called `AIX_EXPORT_ALL_SYMBOLS` that can be explicitly set to OFF to
suppress this behavior and export no symbols by default.
Fixes: #20290
Set the MinTypeNameLength option to an impossibly high value in order
to limit the diagnostics to iterators. Leave new expressions and cast
expressions for later.
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)`
Suppress some cases in `Source/cmGeneratorExpressionNode.cxx` and
`Source/cmUVHandlePtr.h` where a few older compilers require a
user-defined default constructor (with `{}`).
Run the `clang-format.bash` script to update all our C and C++ code to a
new style defined by `.clang-format`. Use `clang-format` version 6.0.
* If you reached this commit for a line in `git blame`, re-run the blame
operation starting at the parent of this commit to see older history
for the content.
* See the parent commit for instructions to rebase a change across this
style transition commit.
Fix issues diagnosed by clang-tidy by pre-allocating the vector capacity
before the loop [performance-inefficient-vector-operation].
Signed-off-by: Matthias Maennich <matthias@maennich.net>
Move addition of IPO flags into `cmLocalGenerator::AddLanguageFlags`
because all call sites of that need the IPO flags, but not all were
following the call with `AppendFeatureOptions`.
Create a `ModuleDefinitionInfo` structure for each configuration of a
target to hold corresponding information about the selected module
definition file (`.def` source).
A module definition (`.def`) file specifies symbols to export from
a linked binary. The librarian tool is not a linker and so should
not be given a `/DEF:...` flag with the `.def` file. The other
generators already do not do this, so fix Ninja to be consistent.
Closes: #16537
