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We've long created shared objects on AIX using the linker's `-G` option
(also offered by the XL front-end). The `-G` option implies `-brtl` and
enables runtime linking. This has been largely unnecessary because we
provide all dependencies on the link line and both XL and GNU compilers
offer builtin behavior to export symbols. Since commit 0f150b69d3 (AIX:
Explicitly compute shared object exports for both XL and GNU,
2019-07-11) we compute exports explicitly and consistently.
Therefore runtime linking is no longer necessary for shared objects.
We've also long created executables on AIX using the linker's `-brtl`
option to enable runtime linking in case they load plugins at runtime.
Since commit 9f5c2040bf (AIX: Explicitly compute executable exports for
both XL and GNU, 2019-07-12) and commit 2fa920c0cd (AIX: Create import
library for executables with exports, 2019-07-16) we now provide the
linker enough information to fully resolve symbols in plugins up front.
Therefore runtime linking is no longer necessary for executables.
Drop use of `-G` for creating shared objects and use the XL `-qmkshrobj`
and GCC `-shared` options instead. Both invoke the linker with the
`-bM:SRE -bnoentry` options to create a shared object without runtime
linking enabled. Also drop use of `-brtl` for creating executables.
Issue: #19163
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2fa920c0cd AIX: Create import library for executables with exports
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3561
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On AIX, plugins meant to be loaded into executables via `dlopen` must be
linked with access to a list of symbols exported from the executable in
order to use them (when not using runtime linking). The AIX linker
supports specifying this list as an "import file" passed on the command
line either via the `-bI:...` option or (with a leading `#! .` line) as
a normal input file like any other library file.
The linker import file plays the same role on AIX as import libraries do
on Windows. Teach CMake to enable its import library abstraction on AIX
for executables with the `ENABLE_EXPORTS` target property set. Teach
our internal `ExportImportList` script to optionally generate a leading
`#! .` line at the top of the generated export/import list. Update our
rule for linking an executable with exports to generate a public-facing
"import library" implemented as an AIX linker import file.
With this approach, our existing infrastructure for handling import
libraries on Windows will now work for AIX linker import files too:
* Plugins that link to their executable's symbols will be automatically
linked using the import file on the command line.
* The executable's import file will be (optionally) installed and
exported for use in linking externally-built plugins.
This will allow executables and their plugins to build even if we later
turn off runtime linking.
Issue: #19163
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0518e675ea CMake.qch: Don't include the version in the file name
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3558
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Fixes: #19374
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0ba5891ead project: Keep leading `0` in PROJECT_VERSION components
5f84669806 Tests: Factor out RunCMake.project helper macro into module
b1f387a7ea Refactor: Use raw string literals instead of escaping
41b85968d8 Refactor: Use initializer lists instead of `push_back` series
45e85dd2b2 Refactor: Add some `const` to vars
90f91e4d21 Refactor: Replace a "magic" number w/ a named constant
638383c38f Refactor: Eliminate one-time-used variables
9b6a53292f Refactor: Eliminate `sep` from the loop
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3517
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Introduce CMake policy `CMP0096` to make `project()` keep leading zeros
in version components. As a side effect, it now allows really long
version numbers.
Fixes: #19421
Co-Author: Brad King <brad.king@kitware.com>
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Spell out the behavior on each platform in a bullet list.
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In real projects the variable form should rarely be used because the
decision to export symbols from an executable is very specific.
Remove its main description, which duplicates the `ENABLE_EXPORTS`
target property, and simply reference the property instead.
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f84d2045e9 FindBISON: Fix CMP0088 NEW behavior for non-absolute input paths
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3549
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Now that the working directory is in the build tree, relative input
paths must be converted to an absolute path to remain relative to the
source directory.
Fixes: #19472
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b8828ecbba cmake -E: Add true and false commands
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3542
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cd681f1f41 ctest: propagate make program to cmake
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3483
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09c1991895 Eclipse: Add option to set the resource encoding
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3525
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c65f296960 Help: Mention file(GLOB)'s case-sensitivity
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3516
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Based on the KWSYS_GLOB_CASE_INDEPENDENT flag in `Source/kwsys/Glob.cxx`.
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42a9e61056 message() help: Clarify how logs are displayed in various tools
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3523
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Merge-request: !3521
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Merge-request: !3498
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447a96f590 vim: Update cmake.vim to include the CMAKE_FIND_USE variables
1d00ba9ccf Find: find_package prefers variable CMAKE_FIND_USE_REGISTRY
704e3a2ca8 Find: Correct spelling and layout issues in CMAKE_FIND_USE_ docs
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3487
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CMake's find control flags should all have a consistent name.
To make this happen we are introducing `CMAKE_FIND_USE_REGISTRY`
and deprecating `CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY`.
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14ed40d670 Help: Use consistent levels for cmake --loglevel and message()
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3521
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The message() command requires uppercase log levels. Even
though the cmake --loglevel option is not case sensitive, show
the supported values as uppercase to match the message()
docs as closely as possible, since they are related to the same
feature.
Also fixes the wrong string being shown for the warning level
by cmake --help.
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365ee32db8 Help: Valid range for test property, SKIP_RETURN_CODE, is 0 to 255, inclusive
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3507
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08cd7f6a02 Swift: support multithreaded compilation
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3506
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Query the number of logical CPUs available to enable parallel
compilation for Swift.
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d5b722bbbd Help: Remove mention of CMAKE_INSTALL_DO_STRIP
ddc7ea4696 Help: Clarify how to provide multiple targets with cmake --target
c509f38b7b Help: Add missing xref for CMAKE_EXECUTE_PROCESS_COMMAND_ECHO
9cc6befe1b Help: Improve formatting of list(TRANSFORM) sub-options
074fbdb73f Help: Clean up trivial typos and grammar
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Brad King <brad.king@kitware.com>
Merge-request: !3498
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It isn't yet clear whether we want to make this part of the
documented API for the install script. Remove it from the
docs before it appears in an official release for now.
Relates: #18997
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16434fe303 Help: Discourage using CMAKE_SOURCE_DIR in toolchain files
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3495
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Fixes: #19390
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d3ebef4f70 CMAKE_CUDA_HOST_COMPILER: Document it takes priority over CUDAHOSTCXX
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3490
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The OLD behaviors of all policies are deprecated, but only by
documentation. Add an explicit deprecation diagnostic for policies
introduced in CMake 3.8 and below to encourage projects to port away
from setting policies to OLD.
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42294f43bd Help: move code injection vars to their own section
9e0775cb6a Help: Remove self-references from project() docs
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3494
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The docs for CMAKE_PROJECT_<projName>_INCLUDE and
CMAKE_PROJECT_INCLUDE did not define the order of
inclusion if both were set.
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Merge-request: !3478
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Merge-request: !3468
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Merge-request: !3466
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cd92f8f8bf VS: Add VS_DPI_AWARE target property
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3418
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