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[MesonToolchain] Added native mechanism when cross-building #15919

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merged 7 commits into from
May 6, 2024
Merged

[MesonToolchain] Added native mechanism when cross-building #15919

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9b56b85
Added native attribute to MesonToolchain. Adapted the whole Meson mec…
franramirez688 Apr 12, 2024
7e19fe4
Added functional test
franramirez688 Apr 12, 2024
02f1cc3
Added integration test
franramirez688 Apr 12, 2024
e6da471
Update conans/test/functional/toolchains/meson/test_meson_native_attr…
franramirez688 Apr 29, 2024
8b3ff07
typo
franramirez688 Apr 30, 2024
e3391b2
Get back to cross_build check
franramirez688 Apr 30, 2024
cc595cf
Fixed if-else condition if native
franramirez688 Apr 30, 2024
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24 changes: 11 additions & 13 deletions conan/tools/meson/meson.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,24 +29,22 @@ def configure(self, reconfigure=False):
" Removing in Conan 2.x.", warn_tag="deprecated")
source_folder = self._conanfile.source_folder
build_folder = self._conanfile.build_folder
cmd = "meson setup"
generators_folder = self._conanfile.generators_folder
cross = os.path.join(generators_folder, MesonToolchain.cross_filename)
native = os.path.join(generators_folder, MesonToolchain.native_filename)
meson_filenames = []
if os.path.exists(cross):
cmd_param = " --cross-file"
meson_filenames.append(cross)
else:
cmd_param = " --native-file"
meson_filenames.append(native)

is_cross_build = os.path.exists(cross)
machine_files = self._conanfile.conf.get("tools.meson.mesontoolchain:extra_machine_files",
default=[], check_type=list)
if machine_files:
meson_filenames.extend(machine_files)

cmd += "".join([f'{cmd_param} "{meson_option}"' for meson_option in meson_filenames])
cmd = "meson setup "
if is_cross_build:
machine_files.insert(0, cross)
cmd += "".join([f'--cross-file "{file}"' for file in machine_files])
if os.path.exists(native):
if not is_cross_build: # machine files are only appended to the cross or the native one
machine_files.insert(0, native)
cmd += "".join([f'--native-file "{file}"' for file in machine_files])
else: # extra native file for cross-building scenarios
cmd += f' --native-file "{native}"'
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I'm keeping the old behavior.

cmd += ' "{}" "{}"'.format(build_folder, source_folder)
# Issue related: https://github.com/mesonbuild/meson/issues/12880
cmd += ' --prefix=/' # this must be an absolute path, otherwise, meson complains
Expand Down
146 changes: 101 additions & 45 deletions conan/tools/meson/toolchain.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
import os
import textwrap

from jinja2 import Template
from jinja2 import Template, StrictUndefined

from conan.errors import ConanException
from conan.internal import check_duplicated_generator
Expand All @@ -20,11 +20,10 @@ class MesonToolchain(object):
"""
MesonToolchain generator
"""

native_filename = "conan_meson_native.ini"
cross_filename = "conan_meson_cross.ini"

_meson_file_template = textwrap.dedent("""
_meson_file_template = textwrap.dedent("""\
[properties]
{% for it, value in properties.items() -%}
{{it}} = {{value}}
Expand All @@ -49,33 +48,76 @@ class MesonToolchain(object):
{% endfor %}

[binaries]
{% if c %}c = {{c}}{% endif %}
{% if cpp %}cpp = {{cpp}}{% endif %}
{% if ld %}ld = {{ld}}{% endif %}
{% if c %}
c = {{c}}
{% endif %}
{% if cpp %}
cpp = {{cpp}}
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{% endif %}
{% if ld %}
ld = {{ld}}
{% endif %}
{% if is_apple_system %}
{% if objc %}objc = '{{objc}}'{% endif %}
{% if objcpp %}objcpp = '{{objcpp}}'{% endif %}
{% if objc %}
objc = '{{objc}}'
{% endif %}
{% if objcpp %}
objcpp = '{{objcpp}}'
{% endif %}
{% endif %}
{% if c_ld %}
c_ld = '{{c_ld}}'
{% endif %}
{% if cpp_ld %}
cpp_ld = '{{cpp_ld}}'
{% endif %}
{% if ar %}
ar = '{{ar}}'
{% endif %}
{% if strip %}
strip = '{{strip}}'
{% endif %}
{% if as %}
as = '{{as}}'
{% endif %}
{% if windres %}
windres = '{{windres}}'
{% endif %}
{% if pkgconfig %}
pkgconfig = '{{pkgconfig}}'
{% endif %}
{% if pkgconfig %}
pkg-config = '{{pkgconfig}}'
{% endif %}
{% if c_ld %}c_ld = '{{c_ld}}'{% endif %}
{% if cpp_ld %}cpp_ld = '{{cpp_ld}}'{% endif %}
{% if ar %}ar = '{{ar}}'{% endif %}
{% if strip %}strip = '{{strip}}'{% endif %}
{% if as %}as = '{{as}}'{% endif %}
{% if windres %}windres = '{{windres}}'{% endif %}
{% if pkgconfig %}pkgconfig = '{{pkgconfig}}'{% endif %}
{% if pkgconfig %}pkg-config = '{{pkgconfig}}'{% endif %}

[built-in options]
{% if buildtype %}buildtype = '{{buildtype}}'{% endif %}
{% if debug %}debug = {{debug}}{% endif %}
{% if default_library %}default_library = '{{default_library}}'{% endif %}
{% if b_vscrt %}b_vscrt = '{{b_vscrt}}' {% endif %}
{% if b_ndebug %}b_ndebug = {{b_ndebug}}{% endif %}
{% if b_staticpic %}b_staticpic = {{b_staticpic}}{% endif %}
{% if cpp_std %}cpp_std = '{{cpp_std}}' {% endif %}
{% if backend %}backend = '{{backend}}' {% endif %}
{% if pkg_config_path %}pkg_config_path = '{{pkg_config_path}}'{% endif %}
{% if build_pkg_config_path %}build.pkg_config_path = '{{build_pkg_config_path}}'{% endif %}
{% if buildtype %}
buildtype = '{{buildtype}}'
{% endif %}
{% if default_library %}
default_library = '{{default_library}}'
{% endif %}
{% if b_vscrt %}
b_vscrt = '{{b_vscrt}}'
{% endif %}
{% if b_ndebug %}
b_ndebug = {{b_ndebug}}
{% endif %}
{% if b_staticpic %}
b_staticpic = {{b_staticpic}}
{% endif %}
{% if cpp_std %}
cpp_std = '{{cpp_std}}'
{% endif %}
{% if backend %}
backend = '{{backend}}'
{% endif %}
{% if pkg_config_path %}
pkg_config_path = '{{pkg_config_path}}'
{% endif %}
{% if build_pkg_config_path %}
build.pkg_config_path = '{{build_pkg_config_path}}'
{% endif %}
# C/C++ arguments
c_args = {{c_args}} + preprocessor_definitions
c_link_args = {{c_link_args}}
Expand All @@ -98,16 +140,20 @@ class MesonToolchain(object):
{% endfor %}
""")

def __init__(self, conanfile, backend=None):
def __init__(self, conanfile, backend=None, native=False):
"""
:param conanfile: ``< ConanFile object >`` The current recipe object. Always use ``self``.
:param backend: ``str`` ``backend`` Meson variable value. By default, ``ninja``.
"""
raise_on_universal_arch(conanfile)
self._conanfile = conanfile
self._os = self._conanfile.settings.get_safe("os")
self._native = native
self._is_apple_system = is_apple_os(self._conanfile)

is_cross_building = cross_building(conanfile, skip_x64_x86=True)
if not is_cross_building and native:
raise ConanException("You can only pass native=True if you're cross-building, "
"otherwise, it could cause unexpected results.")
self._conanfile_conf = self._conanfile.conf_build if native else self._conanfile.conf
# Values are kept as Python built-ins so users can modify them more easily, and they are
# only converted to Meson file syntax for rendering
# priority: first user conf, then recipe, last one is default "ninja"
Expand Down Expand Up @@ -163,12 +209,11 @@ def __init__(self, conanfile, backend=None):
# Issue: https://github.com/conan-io/conan/issues/14935
self.build_pkg_config_path = None
self.libcxx, self.gcc_cxx11_abi = libcxx_flags(self._conanfile)

#: Dict-like object with the build, host, and target as the Meson machine context
self.cross_build = {}
default_comp = ""
default_comp_cpp = ""
if cross_building(conanfile, skip_x64_x86=True):
if native is False and is_cross_building:
os_host = conanfile.settings.get_safe("os")
arch_host = conanfile.settings.get_safe("arch")
os_build = conanfile.settings_build.get_safe('os')
Expand Down Expand Up @@ -197,10 +242,11 @@ def __init__(self, conanfile, backend=None):
default_comp_cpp = "cl"

# Read configuration for compilers
compilers_by_conf = self._conanfile.conf.get("tools.build:compiler_executables", default={},
compilers_by_conf = self._conanfile_conf.get("tools.build:compiler_executables", default={},
check_type=dict)
# Read the VirtualBuildEnv to update the variables
build_env = VirtualBuildEnv(self._conanfile, auto_generate=True).vars()
build_env = self._conanfile.buildenv_build.vars(self._conanfile) if native else (
VirtualBuildEnv(self._conanfile, auto_generate=True).vars())
#: Sets the Meson ``c`` variable, defaulting to the ``CC`` build environment value.
#: If provided as a blank-separated string, it will be transformed into a list.
#: Otherwise, it remains a single string.
Expand Down Expand Up @@ -232,7 +278,7 @@ def __init__(self, conanfile, backend=None):
self.windres = build_env.get("WINDRES")
#: Defines the Meson ``pkgconfig`` variable. Defaulted to ``PKG_CONFIG``
#: build environment value
self.pkgconfig = (self._conanfile.conf.get("tools.gnu:pkg_config", check_type=str) or
self.pkgconfig = (self._conanfile_conf.get("tools.gnu:pkg_config", check_type=str) or
build_env.get("PKG_CONFIG"))
#: Defines the Meson ``c_args`` variable. Defaulted to ``CFLAGS`` build environment value
self.c_args = self._get_env_list(build_env.get("CFLAGS", []))
Expand Down Expand Up @@ -266,7 +312,8 @@ def __init__(self, conanfile, backend=None):
self.objcpp_link_args = []

self._resolve_apple_flags_and_variables(build_env, compilers_by_conf)
self._resolve_android_cross_compilation()
if native is False:
self._resolve_android_cross_compilation()

def _get_default_dirs(self):
"""
Expand Down Expand Up @@ -309,7 +356,7 @@ def _resolve_apple_flags_and_variables(self, build_env, compilers_by_conf):
return
# Calculating the main Apple flags
min_flag, arch_flag, isysroot_flag = (
resolve_apple_flags(self._conanfile, is_cross_building=bool(self.cross_build)))
resolve_apple_flags(self._conanfile, is_cross_building=self.cross_build))
self.apple_arch_flag = arch_flag.split() if arch_flag else []
self.apple_isysroot_flag = isysroot_flag.split() if isysroot_flag else []
self.apple_min_version_flag = [apple_min_version_flag(self._conanfile)]
Expand All @@ -325,7 +372,7 @@ def _resolve_android_cross_compilation(self):
if not self.cross_build or not self.cross_build["host"]["system"] == "android":
return

ndk_path = self._conanfile.conf.get("tools.android:ndk_path")
ndk_path = self._conanfile_conf.get("tools.android:ndk_path")
if not ndk_path:
raise ConanException("You must provide a NDK path. Use 'tools.android:ndk_path' "
"configuration field.")
Expand All @@ -346,11 +393,11 @@ def _resolve_android_cross_compilation(self):

def _get_extra_flags(self):
# Now, it's time to get all the flags defined by the user
cxxflags = self._conanfile.conf.get("tools.build:cxxflags", default=[], check_type=list)
cflags = self._conanfile.conf.get("tools.build:cflags", default=[], check_type=list)
sharedlinkflags = self._conanfile.conf.get("tools.build:sharedlinkflags", default=[], check_type=list)
exelinkflags = self._conanfile.conf.get("tools.build:exelinkflags", default=[], check_type=list)
linker_scripts = self._conanfile.conf.get("tools.build:linker_scripts", default=[], check_type=list)
cxxflags = self._conanfile_conf.get("tools.build:cxxflags", default=[], check_type=list)
cflags = self._conanfile_conf.get("tools.build:cflags", default=[], check_type=list)
sharedlinkflags = self._conanfile_conf.get("tools.build:sharedlinkflags", default=[], check_type=list)
exelinkflags = self._conanfile_conf.get("tools.build:exelinkflags", default=[], check_type=list)
linker_scripts = self._conanfile_conf.get("tools.build:linker_scripts", default=[], check_type=list)
linker_script_flags = ['-T"' + linker_script + '"' for linker_script in linker_scripts]
defines = [f"-D{d}" for d in self._conanfile.conf.get("tools.build:defines", default=[], check_type=list)]
return {
Expand Down Expand Up @@ -450,6 +497,15 @@ def _sanitize_format(v):
"is_apple_system": self._is_apple_system
}

@property
def _filename(self):
if self.cross_build and self._native:
return self.native_filename
elif self.cross_build:
return self.cross_filename
else:
return self.native_filename

@property
def _content(self):
"""
Expand All @@ -458,7 +514,8 @@ def _content(self):
:return: ``str`` whole Meson context content.
"""
context = self._context()
content = Template(self._meson_file_template).render(context)
content = Template(self._meson_file_template, trim_blocks=True, lstrip_blocks=True,
undefined=StrictUndefined).render(context)
return content

def generate(self):
Expand All @@ -468,7 +525,6 @@ def generate(self):
If Windows OS, it will be created a ``conanvcvars.bat`` as well.
"""
check_duplicated_generator(self, self._conanfile)
filename = self.native_filename if not self.cross_build else self.cross_filename
save(filename, self._content)
save(self._filename, self._content)
# FIXME: Should we check the OS and compiler to call VCVars?
VCVars(self._conanfile).generate()
5 changes: 5 additions & 0 deletions conans/client/graph/profile_node_definer.py
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Expand Up @@ -26,8 +26,13 @@ def initialize_conanfile_profile(conanfile, profile_build, profile_host, base_co
settings_build = _per_package_settings(conanfile, profile_build, ref)
if is_build_require or base_context == CONTEXT_BUILD:
_initialize_conanfile(conanfile, profile_build, settings_build.copy(), ref)
conanfile.buildenv_build = None
conanfile.conf_build = None
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else:
_initialize_conanfile(conanfile, profile_host, settings_host, ref)
# Host profile with some build profile information
conanfile.buildenv_build = profile_build.buildenv.get_profile_env(ref, conanfile._conan_is_consumer)
conanfile.conf_build = profile_build.conf.get_conanfile_conf(ref, conanfile._conan_is_consumer)
conanfile.settings_build = settings_build
conanfile.settings_target = None

Expand Down
1 change: 0 additions & 1 deletion conans/model/conan_file.py
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Expand Up @@ -9,7 +9,6 @@
from conans.model.dependencies import ConanFileDependencies
from conans.model.layout import Folders, Infos, Layouts
from conans.model.options import Options

from conans.model.requires import Requirements
from conans.model.settings import Settings

Expand Down
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