diff options
Diffstat (limited to 'recipes-wam/cef/gn-utils.inc')
| -rw-r--r-- | recipes-wam/cef/gn-utils.inc | 141 |
1 files changed, 112 insertions, 29 deletions
diff --git a/recipes-wam/cef/gn-utils.inc b/recipes-wam/cef/gn-utils.inc index 156b56d2d..34f8a12cc 100644 --- a/recipes-wam/cef/gn-utils.inc +++ b/recipes-wam/cef/gn-utils.inc @@ -1,32 +1,115 @@ -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to deal -# in the Software without restriction, including without limitation the rights -# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -# copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: +# GN host architecture helpers. # -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. +# Copied from https://github.com/OSSystems/meta-browser # -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -# THE SOFTWARE. - -def gn_arch_name(yocto_arch): - """Translates between Yocto's architecture values and the corresponding - ones used by GN.""" - translation_table = { - 'aarch64': 'arm64', - 'arm': 'arm', - 'i586': 'x86', - 'i686': 'x86', - 'x86_64': 'x64', +# BUILD_ARCH's value corresponds to what uname returns as the machine name. +# The mapping in gn_host_arch_name() tries to match several possible values +# returned by the Linux kernel in uname(2) into the corresponding values GN +# understands. + +def gn_host_arch_name(d): + """Returns a GN architecture name corresponding to the build host's machine + architecture.""" + import re + arch_translations = { + r'aarch64.*': 'arm64', + r'arm.*': 'arm', + r'i[3456]86$': 'x86', + r'x86_64$': 'x64', } - try: - return translation_table[yocto_arch] - except KeyError: - bb.fatal('"%s" is not a supported architecture.' % yocto_arch) + build_arch = d.getVar("BUILD_ARCH") + for arch_regexp, gn_arch_name in arch_translations.items(): + if re.match(arch_regexp, build_arch): + return gn_arch_name + bb.fatal('Unsuported BUILD_ARCH value: "%s"' % build_arch) + +# GN target architecture helpers. +# +# Determining the target architecture is more difficult, as there are many +# different values we can use on the Yocto side (e.g. TUNE_ARCH, TARGET_ARCH, +# MACHINEOVERRIDES etc). What we do is define the mapping with regular, +# non-Python variables with overrides that are generic enough (i.e. "x86" +# instead of "i586") and then use gn_target_arch_name() to return the right +# value with some validation. +GN_TARGET_ARCH_NAME:aarch64 = "arm64" +GN_TARGET_ARCH_NAME:arm = "arm" +GN_TARGET_ARCH_NAME:x86 = "x86" +GN_TARGET_ARCH_NAME:x86-64 = "x64" + +def clang_install_path(d): + """Return clang compiler install path.""" + return d.getVar("STAGING_BINDIR_NATIVE") + +def gn_target_arch_name(d): + """Returns a GN architecture name corresponding to the target machine's + architecture.""" + name = d.getVar("GN_TARGET_ARCH_NAME") + if name is None: + bb.fatal('Unsupported target architecture. A valid override for the ' + 'GN_TARGET_ARCH_NAME variable could not be found.') + return name + +def write_toolchain_file(d, file_path): + """Creates a complete GN toolchain file in |file_path|.""" + import string + # Even though we always use clang, the "clang_toolchain" GN template is too + # restrictive in the way it sets variables such as |cxx|. Since it is just + # a wrapper on top of the "gcc_toolchain" template, we keep using the + # latter directly to accommodate our cross-compilation needs. + toolchain_tmpl = string.Template( + 'gcc_toolchain("${toolchain_name}") {\n' + ' cc = "${cc}"\n' + ' cxx = "${cxx}"\n' + ' ar = "${ar}"\n' + ' ld = cxx # GN expects a compiler, not a linker.\n' + ' nm = "${nm}"\n' + ' readelf = "${readelf}"\n' + ' extra_cflags = "${extra_cflags}"\n' + ' extra_cppflags = "${extra_cppflags}"\n' + ' extra_cxxflags = "${extra_cxxflags}"\n' + ' extra_ldflags = "${extra_ldflags}"\n' + ' toolchain_args = {\n' + ' current_cpu = "${current_cpu}"\n' + ' current_os = "linux"\n' + ' is_clang = true\n' + ' }\n' + '}\n' + ) + + native_toolchain = { + 'toolchain_name': 'yocto_native', + 'current_cpu': gn_host_arch_name(d), + 'cc': d.expand('${BUILD_CC}'), + 'cxx': d.expand('${BUILD_CXX}'), + 'ar': d.expand('${BUILD_AR}'), + 'nm': d.expand('${BUILD_NM}'), + 'readelf': d.expand('${BUILD_PREFIX}readelf'), + 'extra_cflags': d.expand('${BUILD_CFLAGS}'), + 'extra_cppflags': d.expand('${BUILD_CPPFLAGS}'), + 'extra_cxxflags': d.expand('${BUILD_CXXFLAGS}'), + 'extra_ldflags': d.expand('${BUILD_LDFLAGS}'), + } + target_toolchain = { + 'toolchain_name': 'yocto_target', + 'current_cpu': gn_target_arch_name(d), + 'cc': d.expand('${CC}'), + 'cxx': d.expand('${CXX}'), + 'ar': d.expand('${AR}'), + 'nm': d.expand('${NM}'), + 'readelf': d.expand('${READELF}'), + 'extra_cflags': d.expand('${CFLAGS}'), + 'extra_cppflags': d.expand('${CPPFLAGS}'), + 'extra_cxxflags': d.expand('${CXXFLAGS}'), + 'extra_ldflags': d.expand('${LDFLAGS}'), + } + + with open(file_path, 'w') as toolchain_file: + toolchain_file.write( + '# This file has been generated automatically.\n' + '\n' + 'import("//build/toolchain/gcc_toolchain.gni")\n' + '\n' + ) + toolchain_file.write(toolchain_tmpl.substitute(native_toolchain)) + toolchain_file.write(toolchain_tmpl.substitute(target_toolchain)) + |