Currently C++ inherits C, which can lead to diamond problems. By pulling
the code out into a standalone mixin class that the C, C++, ObjC, and
Objc++ compilers can inherit and override as necessary we remove one
source of diamonding. I've chosen to split this out into it's own file
as the CLikeCompiler class is over 1000 lines by itself. This also
breaks the VisualStudio derived classes inheriting from each other, to
avoid the same C -> CPP inheritance problems. This is all one giant
patch because there just isn't a clean way to separate this.
I've done the same for Fortran since it effectively inherits the
CCompiler (I say effectively because was it actually did was gross
beyond explanation), it's probably not correct, but it seems to work for
now. There really is a lot of layering violation going on in the
Compilers, and a really good scrubbing would do this code a lot of good.
Instad of having special casing of threads in the backends and
everywehre else, do what we did for openmp, create a real
dependency. Then make use of the fact that dependencies can now have
sub dependencies to add threads.
Currently we specialcase OpenMP like we do threads, with a special
`need_openmp` method. This seems like a great idea, but doesn't work
out in practice, as well as it complicates the opemp
implementation. If GCC is built without opemp support for example, we
still add -fopenmp to the the command line, which results in
compilation errors.
This patch discards that and treats it like a normal dependency,
removes the need_openmp() method, and sets the compile_args attributes
from the compiler.
Fixes#5115
Instead use coredata.compiler_options.<machine>. This brings the cross
and native code paths closer together, since both now use that.
Command line options are interpreted just as before, for backwards
compatibility. This does introduce some funny conditionals. In the
future, I'd like to change the interpretation of command line options so
- The logic is cross-agnostic, i.e. there are no conditions affected by
`is_cross_build()`.
- Compiler args for both the build and host machines can always be
controlled by the command line.
- Compiler args for both machines can always be controlled separately.
A custom_target, if install is set to true, will always be built by
default even if build_by_default is explicitly set to false.
Ensure that this does not happen if it's set explicitly. To keep
backward compatibility, if build_by_default is not set explicitly and
install is true, set build_by_default to true.
Fixes#4107
Building a cross compiler (`build == host != target`) is not cross
compiling. As such, it doesn't make sense to handle it under
`is_cross_build`.
(N.B. Building a standard library for a cross compiler would require
cross compiling, but Meson has support to do such a thing as part of a
compiler build currently.)
Handle clang's cl or clang-cl being in PATH, or set in CC/CXX
Future work: checking the name of the executable here seems like a bad idea.
These compilers will fail to be detected if they are renamed.
v2:
Update compiler.get_argument_type() test
Fix comparisons of id inside CCompiler, backends and elsewhere
v3:
ClangClCPPCompiler should be a subclass of ClangClCCompier, as well
Future work: mocking in test_find_library_patterns() is effected, as we
now test for a subclass, rather than self.id in CCompiler.get_library_naming()
This reduces the build time about 2 sec. The result itself is not hard
to calculate. However, persistent join calls with the same 2 strings are
not that usefull. This also caused about 600'000 calls to
get_target_dir, we are now down to 60'000 calls form this function to
get_target_dir.
Remove the code responsible for implicitly compressing manpages as .gz
files. It has been established that manpage compression is a distro
packager's task, with existing distros already having their own
implementations of compression.
Fixes#4330
If builddir and sourcedir have different drive letters, a relative path
doesn't exist, and os.path.relpath fails with a ValueError exception.
This just fixes the places which are hit by test cases in a simple-minded
way. There are several other uses of os.path.relpath(), which might be
suspect.
Meson 0.48.0 some validation for using compiled binaries in custom
targets and generators, which is nice. It didn't take into account
though that as long as the OS is the same, some architectures support
running a related architecture natively (x86_64 can run x86 natively,
for example).
Fortunately we already have a method for covering this case available
through the Environment class.
Fixes#4254
Before, the mappings has been created over all the links, while it
actaully only used the Shared or Static Targets. This structure now is
tree like structured and cached, thus the results can be computed a lot
faster.
The generator step generate_install is now for EFL from 6 sec. down to
0.3s. Which improves the overall build time from ~20 sec. to ~14 sec.
there is a huge amount of isinstance calls, this reduces the amount of
these calls while splitting up a rather big function. It also assosiates
every target type with theire default install directory.
Otherwise if we for some reason get '/usr/lib/../lib' in there
we end up saying it is not a system path.
And for some reason here I got:
```
$ pkg-config --libs libffi 148 ST 117 hotdoc
-L/usr/lib/../lib -lffi
```
The problem with the earlier position of the generation code was, that
the results could not be cached, because the list of all link_deps was
overall different. However, it shared a special kind of subsets with
other build build targets.
Generating the set of subdirs that are required for linking, alongside
with the link dependencies brings the possibility of caching this.
This reduces the buildting from 1 min. in efl down to 20 sec. And
reduces the amount of 30872534 calls down.
this saves ~40 sec.
This means that we will take into account all the flags set in the
cross file when fetching the list of library dirs, which means we
won't incorrectly look for 64-bit libraries when building for 32-bit.
Signed-off-by: Nirbheek Chauhan <nirbheek@centricular.com>
Closes https://github.com/mesonbuild/meson/issues/3881
Dylan Baker
TheQwertiest
Daniel Mensinger
Jussi Pakkanen
Ross Burton
Paolo Bonzini
Nicolas Schneider
John Ericson
John Ericson
Michael Hirsch, Ph.D
Luca Boccassi
Phillip Cao
Jon Turney
Xavier Claessens
Marcel Hollerbach
Michał Górny
Thibault Saunier
Nirbheek Chauhan
Marcel Hollerbach
GoaLitiuM
Bruce Richardson