declare_args() { host_ar = ar host_cc = cc host_cxx = cxx if (is_android) { if (host_os == "win") { target_ar = "$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/$ndk_target/bin/ar.exe" target_cc = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin/clang.exe" target_cxx = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin/clang++.exe" } else { target_ar = "$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/$ndk_target/bin/ar" target_cc = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin/clang" target_cxx = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin/clang++" } } else { target_ar = ar target_cc = cc target_cxx = cxx } cc_wrapper = "" } if (host_os == "win") { stamp = "cmd.exe /c echo >" } else { stamp = "touch" } toolchain("msvc") { lib_dir_switch = "/LIBPATH:" if (msvc == 2015) { if (target_cpu == "x86") { bin = "$win_vc/bin" } else { bin = "$win_vc/bin/amd64" } } else { bin = "$win_vc/Tools/MSVC/$win_toolchain_version/bin/HostX64/$target_cpu" } env_setup = "" if (target_cpu == "x86") { # Toolchain asset includes a script that configures for x86 building. # We don't support x86 builds with local MSVC installations. env_setup = "cmd /c $win_sdk/bin/SetEnv.cmd /x86 && " } else if (target_cpu == "arm64") { # ARM64 compiler is incomplete - it relies on DLLs located in the host toolchain directory. env_setup = "cmd /C set \"PATH=%PATH%;$win_vc\\Tools\\MSVC\\$win_toolchain_version\\bin\\HostX64\\x64\" && " } cl_m32_flag = "" if (clang_win != "") { if (target_cpu == "x86") { # cl.exe knows implicitly by the choice of executable that it's targeting # x86, but clang-cl.exe needs to be told when targeting non-host # platforms. (All our builders are x86-64, so x86 is always non-host.) cl_m32_flag = "-m32" } if (host_os == "win") { cl = "\"$clang_win/bin/clang-cl.exe\"" lib = "\"$clang_win/bin/lld-link.exe\" /lib" link = "\"$clang_win/bin/lld-link.exe\"" } else { cl = "\"$clang_win/bin/clang-cl\"" lib = "\"$clang_win/bin/lld-link\" /lib" link = "\"$clang_win/bin/lld-link\"" } } else { cl = "\"$bin/cl.exe\"" lib = "\"$bin/lib.exe\"" link = "\"$bin/link.exe\"" } tool("asm") { _ml = "ml" if (target_cpu == "x64") { _ml += "64" } command = "$env_setup \"$bin/$_ml.exe\" {{asmflags}} /nologo /c /Fo {{output}} {{source}}" outputs = [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj", ] description = "assemble {{source}}" } tool("cc") { precompiled_header_type = "msvc" pdbname = "{{target_out_dir}}/{{label_name}}_c.pdb" # Label names may have spaces so pdbname must be quoted. command = "$env_setup $cc_wrapper $cl /nologo /showIncludes /FC {{defines}} {{include_dirs}} {{cflags}} $cl_m32_flag {{cflags_c}} /c {{source}} /Fo{{output}} /Fd\"$pdbname\"" depsformat = "msvc" outputs = [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj", ] description = "compile {{source}}" } tool("cxx") { precompiled_header_type = "msvc" pdbname = "{{target_out_dir}}/{{label_name}}_c.pdb" # Label names may have spaces so pdbname must be quoted. command = "$env_setup $cc_wrapper $cl /nologo /showIncludes /FC {{defines}} {{include_dirs}} {{cflags}} $cl_m32_flag {{cflags_cc}} /c {{source}} /Fo{{output}} /Fd\"$pdbname\"" depsformat = "msvc" outputs = [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj", ] description = "compile {{source}}" } tool("alink") { rspfile = "{{output}}.rsp" command = "$env_setup $lib /nologo /ignore:4221 {{arflags}} /OUT:{{output}} @$rspfile" outputs = [ # Ignore {{output_extension}} and always use .lib, there's no reason to # allow targets to override this extension on Windows. "{{root_out_dir}}/{{target_output_name}}{{output_extension}}", ] default_output_extension = ".lib" default_output_dir = "{{target_out_dir}}" # inputs_newline works around a fixed per-line buffer size in the linker. rspfile_content = "{{inputs_newline}}" description = "link {{output}}" } tool("solink") { dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}" libname = "${dllname}.lib" pdbname = "${dllname}.pdb" rspfile = "${dllname}.rsp" command = "$env_setup $link /nologo /IMPLIB:$libname /DLL /OUT:$dllname /PDB:$pdbname @$rspfile" outputs = [ dllname, libname, pdbname, ] default_output_extension = ".dll" default_output_dir = "{{root_out_dir}}" link_output = libname depend_output = libname runtime_outputs = [ dllname, pdbname, ] # I don't quite understand this. Aping Chrome's toolchain/win/BUILD.gn. restat = true # inputs_newline works around a fixed per-line buffer size in the linker. rspfile_content = "{{inputs_newline}} {{libs}} {{solibs}} {{ldflags}}" description = "link {{output}}" } tool("link") { exename = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}" pdbname = "$exename.pdb" rspfile = "$exename.rsp" command = "$env_setup $link /nologo /OUT:$exename /PDB:$pdbname @$rspfile" default_output_extension = ".exe" default_output_dir = "{{root_out_dir}}" outputs = [ exename, ] # inputs_newline works around a fixed per-line buffer size in the linker. rspfile_content = "{{inputs_newline}} {{libs}} {{solibs}} {{ldflags}}" description = "link {{output}}" } tool("stamp") { command = "$stamp {{output}}" description = "stamp {{output}}" } tool("copy") { cp_py = rebase_path("../cp.py") command = "python $cp_py {{source}} {{output}}" description = "copy {{source}} {{output}}" } } template("gcc_like_toolchain") { toolchain(target_name) { ar = invoker.ar cc = invoker.cc cxx = invoker.cxx lib_switch = "-l" lib_dir_switch = "-L" tool("cc") { depfile = "{{output}}.d" command = "$cc_wrapper $cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}" depsformat = "gcc" outputs = [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", ] description = "compile {{source}}" } tool("cxx") { depfile = "{{output}}.d" command = "$cc_wrapper $cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}" depsformat = "gcc" outputs = [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", ] description = "compile {{source}}" } tool("objc") { depfile = "{{output}}.d" command = "$cc_wrapper $cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_objc}} -c {{source}} -o {{output}}" depsformat = "gcc" outputs = [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", ] description = "compile {{source}}" } tool("objcxx") { depfile = "{{output}}.d" command = "$cc_wrapper $cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} {{cflags_objcc}} -c {{source}} -o {{output}}" depsformat = "gcc" outputs = [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", ] description = "compile {{source}}" } tool("asm") { depfile = "{{output}}.d" command = "$cc_wrapper $cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{asmflags}} -c {{source}} -o {{output}}" depsformat = "gcc" outputs = [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", ] description = "assemble {{source}}" } tool("alink") { rspfile = "{{output}}.rsp" rspfile_content = "{{inputs}}" ar_py = rebase_path("../ar.py") command = "python $ar_py $ar {{output}} $rspfile" outputs = [ "{{root_out_dir}}/{{target_output_name}}{{output_extension}}", ] default_output_extension = ".a" output_prefix = "lib" description = "link {{output}}" } tool("solink") { soname = "{{target_output_name}}{{output_extension}}" rpath = "-Wl,-soname,$soname" if (is_mac) { rpath = "-Wl,-install_name,@rpath/$soname" } rspfile = "{{output}}.rsp" rspfile_content = "{{inputs}}" command = "$cc_wrapper $cxx -shared {{ldflags}} @$rspfile {{solibs}} {{libs}} $rpath -o {{output}}" outputs = [ "{{root_out_dir}}/$soname", ] output_prefix = "lib" default_output_extension = ".so" description = "link {{output}}" } tool("link") { rspfile = "{{output}}.rsp" rspfile_content = "{{inputs}}" # --start-group/--end-group let us link multiple .a {{inputs}} # without worrying about their relative order on the link line. # # This is mostly important for traditional linkers like GNU ld and Gold. # The Mac/iOS linker neither needs nor accepts these flags. # LLD doesn't need these flags, but accepts and ignores them. _start_group = "-Wl,--start-group" _end_group = "-Wl,--end-group" if (is_mac || is_ios) { _start_group = "" _end_group = "" } command = "$cc_wrapper $cxx {{ldflags}} $_start_group @$rspfile {{solibs}} $_end_group {{libs}} -o {{output}}" outputs = [ "{{root_out_dir}}/{{target_output_name}}{{output_extension}}", ] description = "link {{output}}" } tool("stamp") { command = "$stamp {{output}}" description = "stamp {{output}}" } tool("copy") { cp_py = rebase_path("../cp.py") command = "python $cp_py {{source}} {{output}}" description = "copy {{source}} {{output}}" } tool("copy_bundle_data") { cp_py = rebase_path("../cp.py") command = "python $cp_py {{source}} {{output}}" description = "copy_bundle_data {{source}} {{output}}" } # We don't currently have any xcasset files so make this a NOP tool("compile_xcassets") { command = "true" description = "compile_xcassets {{output}}" } toolchain_args = { current_cpu = invoker.cpu current_os = invoker.os } } } gcc_like_toolchain("gcc_like") { cpu = current_cpu os = current_os ar = target_ar cc = target_cc cxx = target_cxx } gcc_like_toolchain("gcc_like_host") { cpu = host_cpu os = host_os ar = host_ar cc = host_cc cxx = host_cxx }