Because we need to inherit them in some cases, and python's
keyword-or-positional arguments make this really painful, especially
with inheritance. They do this in two ways:
1) If you want to intercept the arguments you need to check for both a
keyword and a positional argument, because you could get either. Then
you need to make sure that you only pass one of those down to the
next layer.
2) After you do that, if the layer below you decides to do the same
thing, but uses the other form (you used keyword by the lower level
uses positional or vice versa), then you'll get a TypeError since two
layers down got the argument as both a positional and a keyword.
All of this is bad. Fortunately python 3.x provides a mechanism to solve
this, keyword only arguments. These arguments cannot be based
positionally, the interpreter will give us an error in that case.
I have made a best effort to do this correctly, and I've verified it
with GCC, Clang, ICC, and MSVC, but there are other compilers like Arm
and Elbrus that I don't have access to.
Currently, ComplierHolder.determine_args() unconditionally adds the link
arguments to the commmand, even if we aren't linking, because it doesn't
have access to the mode (preprocess, compile, link) that
_get_compiler_check_args() will use.
This leads to command lines like:
'cl testfile.c /nologo /showIncludes /c /Fooutput.obj /Od kernel32.lib
user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib
uuid.lib comdlg32.lib advapi32.lib'
which clang-cl considers invalid; MSVS cl accepts this, ignoring the
unneeded libraries
Change from passing extra_args down to _get_compiler_check_args(), to
passing down a callback to CompilerHolder.determine_args() (with a bound
kwargs argument), so it can consult mode and kwargs to determine the args to
use.
D compilers are configured to have highest priority when chosing linker
for targets mixing C/C++/D code and before this change meson would fail
to configure gtest target that uses D library as a dependency.
* Enums are strongly typed and make the whole
`gcc_type`/`clang_type`/`icc_type` distinction
redundant.
* Enums also allow extending via member functions,
which makes the code more generalisable.
We now use the soversion to set compatibility_version and
current_version by default. This is the only sane thing we can do by
default because of the restrictions on the values that can be used for
compatibility and current version.
Users can override this value with the `darwin_versions:` kwarg, which
can be a single value or a two-element list of values. The first one
is the compatibility version and the second is the current version.
Fixes https://github.com/mesonbuild/meson/issues/3555
Fixes https://github.com/mesonbuild/meson/issues/1451
fixes#4032: meson now checks properly for the compiler used to compile dub dependencies
fixes#3568: applied the following patch https://paste.debian.net/1039317/
meson now adds flags for native dependencies required by dub modules
meson now checks for the D version implemented by the compiler used to build dub dependencies (execpt gdc which doesn't support this)
On macOS, we set the install_name for built libraries to
@rpath/libfoo.dylib, and when linking to the library, we set the RPATH
to its path in the build directory. This allows all built binaries to
be run as-is from the build directory (uninstalled).
However, on install, we have to strip all the RPATHs because they
point to the build directory, and we change the install_name of all
built libraries to the absolute path to the library. This causes the
install name in binaries to be out of date.
We now change that install name to point to the absolute path to each
built library after installation.
Fixes https://github.com/mesonbuild/meson/issues/3038
Fixes https://github.com/mesonbuild/meson/issues/3077
With this, the default workflow on macOS matches what everyone seems
to do, including Autotools and CMake. The next step is providing a way
for build files to override the install_name that is used after
installation for use with, f.ex., private libraries when combined with
the install_rpath: kwarg on targets.
This patch exploits the information residing in ltversion to set the
-compatibility_version and -current_version flags that are passed to the
linker on macOS.
Change the code to store D properties as plain data. Only convert them
to compiler flags in the backend. This also means we can fully parse D
arguments without needing to know the compiler being used.
Older versions of GDC had broken support for the -MQ flag (resulting in
a compiler error). New versions of GDC have this issue fixed (some older
versions received a backport). Starting with GCC 7.1 we can assume
dependency generation to always work reliably.
Of course D compilers have different flags to set some important
D-specific settings. This adds a simple method to change these flags in
a compiler-agnostic way in Meson.
This replaces the previous `unittest_args` method with a more generic
variant.
Daniel Mensinger
Dylan Baker
Jon Turney
Matthias Klumpp
GoaLitiuM
Mihails Strasuns
David Seifert
Nirbheek Chauhan
FFY00
Jussi Pakkanen
Xavier Claessens
Tom Schoonjans
Christoph Behle
Alistair Thomas