f4fc0667ae FindOpenACC: Provide import targets and OpenACC_<lang>_OPTIONS variable
9460501ad7 FindOpenACC: Provide a Fortran snippet that compiles with gfortran
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3670
Previously the FindOpenACC module had issues where the contents of
OpenACC_<lang>_FLAGS could not be used with target_compile_options
when it contained multiple compiler flags.
This change modifies how CMAKE_RC_COMPILER is configured to improve
the out-of-box experience for developers using Clang on Windows.
The previous behavior was to require the user to explicitly specify
the resource compiler when CMake was called. The new behavior
is to automatically attempt to locate the MSVC rc binary and use that
if it's found. If rc is not available, CMake will now fall back to
Clang's llvm-rc binary.
With this change in place, trivial C/C++ programs can be generated
with Ninja and Clang on Windows without running into errors about
a missing resource compiler.
Fixes: #19318
The rules did not account for the import library location (through
`<TARGET_IMPLB>`) and instead would always write the import library to
the default location (next to the shared library/executable). This
prevented the use of `CMAKE_RUNTIME_OUTPUT_LOCATION` and
`CMAKE_ARCHIVE_OUTPUT_LOCATION`.
The original Fortran snippet would fail to compile with the error
message of:
```
return 0;
1
Error: Alternate RETURN statement at (1) is only allowed within a SUBROUTINE
```
We solve this by removing the early termination logic.
This enables the use of MSVC and Swift on Windows in a single project.
MSVC uses no flag to indicate linked libraries while Swift uses `-l`.
Add support for a language specific link library flag which takes
precedence over the global `CMAKE_LINK_LIBRARY_FLAG` which preserves
compatibility with earlier releases.
In commit fb3370b6a1 (MSVC: Add abstraction for runtime library
selection, 2019-04-10, v3.15.0-rc1~229^2) we overlooked updating flags
for Flang on Windows. Add them now and update the MSVCRuntimeLibrary
Fortran test to work with Flang. Base the flags on those we already
use for the GNU-like Clang targeting the MSVC ABI.
Fixes: #19583
Fix logic added by commit a7d853868b (FindGLEW: Update implementation,
2019-03-13, v3.15.0-rc1~375^2~1) on macOS. macOS is recognized as both
UNIX and APPLE. Consequently, the library suffix for shared and static
library was set, respectively, as `.so` and `.a`, just like UNIX systems.
Fix this by properly checking the OS type.
Fixes: #19542
Since commit d44c0db0b2 (clang: setup correct configuration in gnu mode,
2019-02-20, v3.15.0-rc1~41^2~5) our Clang compiler information modules
need the `CMAKE_<LANG>_COMPILER_FRONTEND_VARIANT` variable that we
compute during compiler detection. However, some existing toolchain
files set our internal `CMAKE_<LANG>_COMPILER_ID_RUN` variables and
block that detection, but do not set the new frontend variant variable.
Help them out by setting `CMAKE_<LANG>_COMPILER_FRONTEND_VARIANT` anyway.
Fixes: #19515, #19539
The `CMAKE_LINK_LIBRARY_FILE_FLAG` variable is meant for linkers that
want library file paths to be preceded by a flag. This is used only
for OpenWatcom to add the `library` argument before library file paths.
Refactor the approach to treat `CMAKE_LINK_LIBRARY_FILE_FLAG` as a
command-line string fragment to add just before the library file path.
This has two advantages:
* `CMAKE_LINK_LIBRARY_FILE_FLAG` now works like `CMAKE_LINK_LIBRARY_FLAG`.
* `CMAKE_LINK_LIBRARY_FILE_FLAG` can now be an attached flag whose value
is the library file path.
Technically this is a change in behavior, but this setting was created
for internal use and should be rarely used outside of CMake itself.
Fixes: #19541
The frontend variant detection logic added by commit 53fbe23f3f (clang:
introduce CMAKE_<lang>_COMPILER_FRONTEND_VARIANT, 2019-02-20,
v3.15.0-rc1~41^2~8) assumes that `clang-cl` only runs on a Windows host.
It is also available on non-Windows hosts. Fix the condition.
Fixes: #19544
Also drop the `CMakeOnly.MajorVersionSelection-PythonInterp_2` test
because some environments now have a plain `python` executable for
Python 3.
Fixes: #19536
The clone step checks out the cloned branch but is always followed by an
explicit checkout of the desired `GIT_TAG`. Tell `git clone` not to
check out.
The NDK build system now uses only a single toolchain in
<ndk>/toolchains/llvm/prebuilt/<host>
Its compilers are always `bin/{clang,clang++}` and its binutils are
always `bin/<triple>-*`. It is a standalone toolchain:
* The Anrdoid API level is specified at the end of `--target=`.
* The standard library may be specified via `-stdlib=`.
* No need to pass system includes or libraries explicitly.
* No need to pass `--sysroot` or `-gcc-toolchain`.
Teach CMake to recognize NDK versions that have a unified
toolchain with its own sysroot and use the above approach.
Fixes: #18739
In commit f7eaa342de (FindMPI: Store imported target link flags as a
list instead of a string, 2019-06-14, v3.15.0-rc2~2^2) we used
`separate_arguments` to parse the extracted link flags and add them to
`INTERFACE_LINK_LIBRARIES`. That property is not meant for link flags
and CMake may de-duplicate them. This is particularly problematic for
flags like `-Wl,-rpath -Wl,/path1 -Wl,-rpath -Wl,/path2`.
In commit 39c572c9c9 (FindMPI: Updated to use INTERFACE_LINK_OPTIONS,
2019-06-24) we moved the parsed flags over to `INTERFACE_LINK_OPTIONS`,
but that may still perform de-duplication. Avoid the parsing and
de-duplication of flags by passing the original string via `SHELL:`
instead.
Fixes: #19516
