Since commit d74210a8bd (CMP0017: Remove support for OLD behavior,
2024-11-17) we can rely on CMP0017's NEW behavior unconditionally.
Calling `include(FindPackageHandleStandardArgs)` in a builtin module
will always get the builtin `FindPackageHandleStandardArgs`.
Add a OPENGL_GLU_INCLUDE_DIR cache variable for `GL/glu.h` and attach it
as an include directory to the `OpenGL::GLU` target. Also add a
`OPENGL_INCLUDE_DIRS` result variable to list all include directories.
Account for the GLU header when deciding whether GLU is found.
Fixes: #25627
Take advantage of commit d605f728f7 (macOS: Allow IMPORTED_LOCATION to
be a framework folder, 2023-06-16) to remove special-case framework
logic from find modules.
This changes link lines from `/path/to/Foo.framework/Foo[.tbd]` to
`-framework Foo`. With the latter, the linker will automatically choose
the `.tbd` if it exists.
Issue: #24946
Various find modules include each other to delegate finding some subset
or variant of the package. Ideally, these would use `find_dependency` or
some other actual `find_package` mechanism, but that is a larger change.
Instead, just detect inclusion and suppress FPHSA name mismatch
warnings.
Fixes: #21060
This command is intended for modules that issue policy warnings so
they can get the warning string from CMake in a uniform manner,
rather than duplicating the string. Several modules been updated
to include an example of the usage of this new command.
Since commit v3.10.0-rc5~3^2 (FindOpenGL: Default to non-GLVND libraries
for legacy GL, 2017-11-08) users may set `OPENGL_gl_LIBRARY` to empty to
use GLVND components for the legacy GL interfaces. This is useful only
when one knows in advance that the GLVND components will be found.
Add a `OpenGL_GL_PREFERENCE` variable to specify a preference for legacy
GL or GLVND. The latter can suppress `OPENGL_gl_LIBRARY` only when the
needed GLVND components are found. If no preference is explicitly
specified, choose a default based on whether GLVND components were
requested (because this indicates the project has been updated for
CMake 3.10).
Issue: #17437
Issue: #17449
Projects using `OPENGL_LIBRARIES` or `OpenGL::GL` expect legacy GL.
Although GLVND OpenGL+GLX provides legacy GL interfaces, using those
library files may conflict with legacy GL library files used by
dependencies (or dependents) of such projects. Therefore we should
not yet use OpenGL+GLX when a legacy GL library is available.
If `OPENGL_gl_LIBRARY` is set then use it as the legacy GL library.
If it is *not* set then fall back to using GLVND OpenGL+GLX to provide
legacy GL interfaces. This will allow users to build projects using
GLVND even if they have not been ported.
Fixes: #17437
Find GLVND components if available. Add `GLX` and `EGL` options for
COMPONENTS that allow requesting these libraries explicitly. Introduce
new import targets for these windowing-system-specific libraries.
On a GLVND system, populate the legacy `OPENGL_LIBRARIES` variable and
the `OpenGL::GL` target using the `OpenGL` and `GLX` components. On
non-GLVND systems, continue to use the legacy `GL` library and simply do
not provide the GLVND components. Application code can choose to adapt
based on the availability of GLVND components as imported targets.
Create OpenGL::GL and OpenGL::GLU imported targets using the locations
found.
This feature was originally added by commit v3.1.0-rc1~420^2~2
(FindOpenGL: Provide imported targets for GL and GLU, 2014-05-31) but
had to be reverted by commit v3.1.0-rc3~10^2 (FindOpenGL: Revert support
for imported targets, 2014-12-01) due to issue #15267. Since then we
added support for `IMPORTED_LIBNAME` to interface libraries, so use it
to handle the case where we have only the library name without an
absolute path.
Inspired-by: Philipp Möller <bootsarehax@googlemail.com>
Closes: #15267
Per-source copyright/license notice headers that spell out copyright holder
names and years are hard to maintain and often out-of-date or plain wrong.
Precise contributor information is already maintained automatically by the
version control tool. Ultimately it is the receiver of a file who is
responsible for determining its licensing status, and per-source notices are
merely a convenience. Therefore it is simpler and more accurate for
each source to have a generic notice of the license name and references to
more detailed information on copyright holders and full license terms.
Our `Copyright.txt` file now contains a list of Contributors whose names
appeared source-level copyright notices. It also references version control
history for more precise information. Therefore we no longer need to spell
out the list of Contributors in each source file notice.
Replace CMake per-source copyright/license notice headers with a short
description of the license and links to `Copyright.txt` and online information
available from "https://cmake.org/licensing". The online URL also handles
cases of modules being copied out of our source into other projects, so we
can drop our notices about replacing links with full license text.
Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
of the replacements mechanically. Manually fix up shebang lines and trailing
newlines in a few files. Manually update the notices in a few files that the
script does not handle.
CMake had been setting OPENGL_glu_LIBRARY to AGL.framework, even
though AGL is not GLU. AGL is simply the GL component for the
deprecated Carbon framework. GLU is provided by OpenGL.framework.
A side effect of the old behavior was that if AGL was not found
(it is absent from OS X SDK 10.10 or later), then OPENGL_GLU_FOUND
would be incorrectly set to "NO".
Revert the feature added by commit v3.1.0-rc1~420^2~2 (FindOpenGL:
Provide imported targets for GL and GLU, 2014-05-31). Unfortunately it
does not work on Windows because the full path to each library file is
not actually known. The IMPORTED_LOCATION of an imported target must be
a full path, but OPENGL_gl_LIBRARY is just 'opengl32' on Windows because
the actual library file is in some implicit link directory that we may
know know.
More infrastructure will be needed in CMake to allow a name-only
imported library. Until that exists, we will not be able to provide
imported targets in FindOpenGL.
In commit 079e8469ab (... OpenGL always needs X11 on Unix, 2002-09-05)
the FindOpenGL module was taught to search for X11 as a dependency of
the OpenGL library. This was done without a detailed explanation, and
the dependency should not be explicitly needed because OpenGL headers
should not expose applications to X11 APIs directly.
Unfortunately the only way to know if anything legitimately depends on
this behavior (perhaps in static library cases) is to simply remove it
and wait for issues to be reported. If so, then we can add some kind of
compatibility setting for this later. Add a release note to draw
attention to this change.
Reported-by: Dainius "GreatEmerald" Masiliūnas <pastas4@gmail.com>
This was using nested if's, now it uses elseif to flatten that. It also removes
one "if" from the general "else" branch that checks for Apple, as that has it's
own branch anyway and can't be true at this point.
This solves a lots of warnings, e.g. in the FindModulesExecuteAll test. If the
installed version on the system is rather old this may even lead to bugs, e.g.
https://bugs.gentoo.org/show_bug.cgi?id=436540
Ancient versions of CMake required else(), endif(), and similar block
termination commands to have arguments matching the command starting the
block. This is no longer the preferred style.
Run the following shell code:
for c in else endif endforeach endfunction endmacro endwhile; do
echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
egrep -z -v 'Tests/CMakeTests/While-Endwhile-' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed
