// Copyright (c) 2019-2022 Alexander Medvednikov. All rights reserved. // Use of this source code is governed by an MIT license // that can be found in the LICENSE file. module builder import os import v.cflag import v.pref import v.util import v.vcache import term const c_verror_message_marker = 'VERROR_MESSAGE ' const c_error_info = ' ================== C error. This should never happen. This is a compiler bug, please report it using `v bug file.v`. https://github.com/vlang/v/issues/new/choose You can also use #help on Discord: https://discord.gg/vlang ' pub const no_compiler_error = ' ================== Error: no C compiler detected. You can find instructions on how to install one in the V wiki: https://github.com/vlang/v/wiki/Installing-a-C-compiler-on-Windows If you think you have one installed, make sure it is in your PATH. If you do have one in your PATH, please raise an issue on GitHub: https://github.com/vlang/v/issues/new/choose You can also use `v doctor`, to see what V knows about your current environment. You can also seek #help on Discord: https://discord.gg/vlang ' pub fn (mut v Builder) find_win_cc() ? { $if !windows { return } ccompiler_version_res := os.execute('${os.quoted_path(v.pref.ccompiler)} -v') if ccompiler_version_res.exit_code != 0 { if v.pref.is_verbose { println('$v.pref.ccompiler not found, looking for msvc...') } find_msvc(v.pref.m64) or { if v.pref.is_verbose { println('msvc not found, looking for thirdparty/tcc...') } vpath := os.dir(pref.vexe_path()) thirdparty_tcc := os.join_path(vpath, 'thirdparty', 'tcc', 'tcc.exe') tcc_version_res := os.execute('${os.quoted_path(thirdparty_tcc)} -v') if tcc_version_res.exit_code != 0 { if v.pref.is_verbose { println('tcc not found') } return error('tcc not found') } v.pref.ccompiler = thirdparty_tcc v.pref.ccompiler_type = .tinyc return } v.pref.ccompiler = 'msvc' v.pref.ccompiler_type = .msvc return } v.pref.ccompiler_type = pref.cc_from_string(v.pref.ccompiler) } fn (mut v Builder) show_c_compiler_output(res os.Result) { println('======== C Compiler output ========') println(res.output) println('=================================') } fn (mut v Builder) post_process_c_compiler_output(res os.Result) { if res.exit_code == 0 { if v.pref.reuse_tmpc { return } for tmpfile in v.pref.cleanup_files { if os.is_file(tmpfile) { if v.pref.is_verbose { eprintln('>> remove tmp file: $tmpfile') } os.rm(tmpfile) or {} } } return } for emsg_marker in [builder.c_verror_message_marker, 'error: include file '] { if res.output.contains(emsg_marker) { emessage := res.output.all_after(emsg_marker).all_before('\n').all_before('\r').trim_right('\r\n') verror(emessage) } } if v.pref.is_debug { eword := 'error:' khighlight := if term.can_show_color_on_stdout() { term.red(eword) } else { eword } println(res.output.trim_right('\r\n').replace(eword, khighlight)) } else { if res.output.len < 30 { println(res.output) } else { elines := error_context_lines(res.output, 'error:', 1, 12) println('==================') for eline in elines { println(eline) } println('...') println('==================') println('(Use `v -cg` to print the entire error message)\n') } } verror(builder.c_error_info) } fn (mut v Builder) show_cc(cmd string, response_file string, response_file_content string) { if v.pref.is_verbose || v.pref.show_cc { println('> C compiler cmd: $cmd') if v.pref.show_cc && !v.pref.no_rsp { println('> C compiler response file "$response_file":') println(response_file_content) } } } struct CcompilerOptions { mut: guessed_compiler string shared_postfix string // .so, .dll // // debug_mode bool is_cc_tcc bool is_cc_gcc bool is_cc_msvc bool is_cc_clang bool // env_cflags string // prepended *before* everything else env_ldflags string // appended *after* everything else // args []string // ordinary C options like `-O2` wargs []string // for `-Wxyz` *exclusively* pre_args []string // options that should go before .o_args o_args []string // for `-o target` source_args []string // for `x.tmp.c` post_args []string // options that should go after .o_args linker_flags []string // `-lm` } fn (mut v Builder) setup_ccompiler_options(ccompiler string) { mut ccoptions := CcompilerOptions{} // mut debug_options := ['-g'] mut optimization_options := ['-O2'] // arguments for the C compiler ccoptions.args = [v.pref.cflags] if !v.pref.no_std { if v.pref.os == .linux { ccoptions.args << '-std=gnu99 -D_DEFAULT_SOURCE' } else { ccoptions.args << '-std=c99 -D_DEFAULT_SOURCE' } } ccoptions.wargs = [ '-Wall', '-Wextra', '-Werror', // if anything, these should be a `v vet` warning instead: '-Wno-unused-parameter', '-Wno-unused', '-Wno-type-limits', '-Wno-tautological-compare', // these cause various issues: '-Wno-shadow' /* the V compiler already catches this for user code, and enabling this causes issues with e.g. the `it` variable */, '-Wno-int-to-pointer-cast' /* gcc version of the above */, '-Wno-trigraphs' /* see stackoverflow.com/a/8435413 */, '-Wno-missing-braces' /* see stackoverflow.com/q/13746033 */, // enable additional warnings: '-Wno-unknown-warning' /* if a C compiler does not understand a certain flag, it should just ignore it */, '-Wno-unknown-warning-option' /* clang equivalent of the above */, '-Wno-excess-initializers' /* vlib/v/tests/struct_init_with_complex_fields_test.v fails without that on macos clang 13 */, '-Wdate-time', '-Wduplicated-branches', '-Wduplicated-cond', '-Winit-self', '-Winvalid-pch', '-Wjump-misses-init', '-Wlogical-op', '-Wmultichar', '-Wnested-externs', '-Wnull-dereference', '-Wpacked', '-Wpointer-arith', '-Wswitch-enum', ] if v.pref.os == .ios { ccoptions.args << '-fobjc-arc' } ccoptions.debug_mode = v.pref.is_debug ccoptions.guessed_compiler = v.pref.ccompiler if ccoptions.guessed_compiler == 'cc' && v.pref.is_prod { // deliberately guessing only for -prod builds for performance reasons ccversion := os.execute('${os.quoted_path('cc')} --version') if ccversion.exit_code == 0 { if ccversion.output.contains('This is free software;') && ccversion.output.contains('Free Software Foundation, Inc.') { ccoptions.guessed_compiler = 'gcc' } if ccversion.output.contains('clang version ') { ccoptions.guessed_compiler = 'clang' } } } // ccoptions.is_cc_tcc = ccompiler.contains('tcc') || ccoptions.guessed_compiler == 'tcc' ccoptions.is_cc_gcc = ccompiler.contains('gcc') || ccoptions.guessed_compiler == 'gcc' ccoptions.is_cc_msvc = ccompiler.contains('msvc') || ccoptions.guessed_compiler == 'msvc' ccoptions.is_cc_clang = ccompiler.contains('clang') || ccoptions.guessed_compiler == 'clang' // For C++ we must be very tolerant if ccoptions.guessed_compiler.contains('++') { ccoptions.args << '-fpermissive' ccoptions.args << '-w' } if ccoptions.is_cc_clang { if ccoptions.debug_mode { debug_options = ['-g', '-O0'] } optimization_options = ['-O3'] mut have_flto := true $if openbsd || windows { have_flto = false } if have_flto { optimization_options << '-flto' } ccoptions.wargs << [ '-Wno-tautological-bitwise-compare', '-Wno-enum-conversion' /* used in vlib/sokol, where C enums in C structs are typed as V structs instead */, '-Wno-sometimes-uninitialized' /* produced after exhaustive matches */, '-Wno-int-to-void-pointer-cast', ] } if ccoptions.is_cc_gcc { if ccoptions.debug_mode { debug_options = ['-g', '-no-pie'] } optimization_options = ['-O3', '-fno-strict-aliasing', '-flto'] } // if ccoptions.debug_mode { ccoptions.args << debug_options // $if macos { // args << '-ferror-limit=5000' // } } if v.pref.is_prod { // don't warn for vlib tests if ccoptions.is_cc_tcc && !(v.parsed_files.len > 0 && v.parsed_files.last().path.contains('vlib')) { eprintln('Note: tcc is not recommended for -prod builds') } ccoptions.args << optimization_options } if v.pref.is_prod && !ccoptions.debug_mode { // sokol and other C libraries that use asserts // have much better performance when NDEBUG is defined // See also http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf ccoptions.args << '-DNDEBUG' } if v.pref.sanitize { ccoptions.args << '-fsanitize=leak' } // ccoptions.shared_postfix = '.so' $if macos { ccoptions.shared_postfix = '.dylib' } $else $if windows { ccoptions.shared_postfix = '.dll' } if v.pref.is_shared { ccoptions.linker_flags << '-shared' $if !windows { ccoptions.args << '-fPIC' // -Wl,-z,defs' } } if v.pref.is_bare && v.pref.os != .wasm32 { ccoptions.args << '-fno-stack-protector' ccoptions.args << '-ffreestanding' ccoptions.linker_flags << '-static' ccoptions.linker_flags << '-nostdlib' } else if v.pref.os == .wasm32 { ccoptions.args << '--no-standard-libraries' ccoptions.args << '-target wasm32-unknown-unknown' ccoptions.args << '-static' ccoptions.args << '-nostdlib' ccoptions.args << '-ffreestanding' ccoptions.args << '-Wl,--export-all' ccoptions.args << '-Wl,--no-entry' } if ccoptions.debug_mode && os.user_os() != 'windows' && v.pref.build_mode != .build_module { ccoptions.linker_flags << '-rdynamic' // needed for nicer symbolic backtraces } if v.pref.os == .freebsd { // Needed for -usecache on FreeBSD 13, otherwise we get `ld: error: duplicate symbol: _const_math__bits__de_bruijn32` errors there if !ccoptions.is_cc_tcc { ccoptions.linker_flags << '-Wl,--allow-multiple-definition' } else { // tcc needs this, otherwise it fails to compile the runetype.h system header with: // /usr/include/runetype.h:94: error: ';' expected (got "const") ccoptions.args << '-D__RUNETYPE_INTERNAL' } } if ccompiler != 'msvc' && v.pref.os != .freebsd { ccoptions.wargs << '-Werror=implicit-function-declaration' } if v.pref.is_liveshared || v.pref.is_livemain { if (v.pref.os == .linux || os.user_os() == 'linux') && v.pref.build_mode != .build_module { ccoptions.linker_flags << '-rdynamic' } if v.pref.os == .macos || os.user_os() == 'macos' { ccoptions.args << '-flat_namespace' } } // macOS code can include objective C TODO remove once objective C is replaced with C if v.pref.os == .macos || v.pref.os == .ios { if !ccoptions.is_cc_tcc { ccoptions.source_args << '-x objective-c' } } // The C file we are compiling ccoptions.source_args << '"$v.out_name_c"' if v.pref.os == .macos { ccoptions.source_args << '-x none' } // Min macos version is mandatory I think? if v.pref.os == .macos { ccoptions.post_args << '-mmacosx-version-min=10.7' } else if v.pref.os == .ios { ccoptions.post_args << '-miphoneos-version-min=10.0' } else if v.pref.os == .windows { ccoptions.post_args << '-municode' } cflags := v.get_os_cflags() if v.pref.build_mode != .build_module { only_o_files := cflags.c_options_only_object_files() ccoptions.o_args << only_o_files } defines, others, libs := cflags.defines_others_libs() ccoptions.pre_args << defines ccoptions.pre_args << others ccoptions.linker_flags << libs if v.pref.use_cache && v.pref.build_mode != .build_module { if !ccoptions.is_cc_tcc { $if linux { ccoptions.linker_flags << '-Xlinker -z' ccoptions.linker_flags << '-Xlinker muldefs' } } } if ccoptions.is_cc_tcc && 'no_backtrace' !in v.pref.compile_defines { ccoptions.post_args << '-bt25' } // Without these libs compilation will fail on Linux // || os.user_os() == 'linux' if !v.pref.is_bare && v.pref.build_mode != .build_module && v.pref.os in [.linux, .freebsd, .openbsd, .netbsd, .dragonfly, .solaris, .haiku] { if v.pref.os in [.freebsd, .netbsd] { // Free/NetBSD: backtrace needs execinfo library while linking ccoptions.linker_flags << '-lexecinfo' } } ccoptions.env_cflags = os.getenv('CFLAGS') ccoptions.env_ldflags = os.getenv('LDFLAGS') $if trace_ccoptions ? { println('>>> setup_ccompiler_options ccompiler: $ccompiler') println('>>> setup_ccompiler_options ccoptions: $ccoptions') } v.ccoptions = ccoptions // setup the cache too, so that different compilers/options do not interfere: v.pref.cache_manager.set_temporary_options(v.thirdparty_object_args(v.ccoptions, [ ccoptions.guessed_compiler, ])) } fn (v &Builder) all_args(ccoptions CcompilerOptions) []string { mut all := []string{} all << ccoptions.env_cflags if v.pref.is_cstrict { all << ccoptions.wargs } all << ccoptions.args all << ccoptions.o_args all << ccoptions.pre_args all << ccoptions.source_args all << ccoptions.post_args // in `build-mode`, we do not need -lxyz flags, since we are // building an (.o) object file, that will be linked later. if v.pref.build_mode != .build_module { all << ccoptions.linker_flags } all << ccoptions.env_ldflags return all } fn (v &Builder) thirdparty_object_args(ccoptions CcompilerOptions, middle []string) []string { mut all := []string{} all << ccoptions.env_cflags all << ccoptions.args all << middle all << ccoptions.env_ldflags return all } fn (mut v Builder) setup_output_name() { if !v.pref.is_shared && v.pref.build_mode != .build_module && os.user_os() == 'windows' && !v.pref.out_name.ends_with('.exe') { v.pref.out_name += '.exe' } // Output executable name v.log('cc() isprod=$v.pref.is_prod outname=$v.pref.out_name') if v.pref.is_shared { if !v.pref.out_name.ends_with(v.ccoptions.shared_postfix) { v.pref.out_name += v.ccoptions.shared_postfix } } if v.pref.build_mode == .build_module { v.pref.out_name = v.pref.cache_manager.postfix_with_key2cpath('.o', v.pref.path) // v.out_name if v.pref.is_verbose { println('Building $v.pref.path to $v.pref.out_name ...') } v.pref.cache_manager.save('.description.txt', v.pref.path, '${v.pref.path:-30} @ $v.pref.cache_manager.vopts\n') or { panic(err) } // println('v.ast.imports:') // println(v.ast.imports) } if os.is_dir(v.pref.out_name) { verror("'$v.pref.out_name' is a directory") } v.ccoptions.o_args << '-o "$v.pref.out_name"' } fn (mut v Builder) dump_c_options(all_args []string) { if v.pref.dump_c_flags != '' { non_empty_args := all_args.filter(it != '').join('\n') + '\n' if v.pref.dump_c_flags == '-' { print(non_empty_args) } else { os.write_file(v.pref.dump_c_flags, non_empty_args) or { panic(err) } } } } pub fn (mut v Builder) cc() { if os.executable().contains('vfmt') { return } if v.pref.is_verbose { println('builder.cc() pref.out_name="$v.pref.out_name"') } if v.pref.only_check_syntax { if v.pref.is_verbose { println('builder.cc returning early, since pref.only_check_syntax is true') } return } if v.pref.check_only { if v.pref.is_verbose { println('builder.cc returning early, since pref.check_only is true') } return } if v.pref.should_output_to_stdout() { // output to stdout content := os.read_file(v.out_name_c) or { panic(err) } println(content) os.rm(v.out_name_c) or {} return } // whether to just create a .c or .js file and exit, for example: `v -o v.c cmd.v` ends_with_c := v.pref.out_name.ends_with('.c') ends_with_js := v.pref.out_name.ends_with('.js') if ends_with_c || ends_with_js { v.pref.skip_running = true msg_mv := 'os.mv_by_cp $v.out_name_c => $v.pref.out_name' util.timing_start(msg_mv) // v.out_name_c may be on a different partition than v.out_name os.mv_by_cp(v.out_name_c, v.pref.out_name) or { panic(err) } util.timing_measure(msg_mv) return } // Cross compiling for Windows if v.pref.os == .windows && v.pref.ccompiler != 'msvc' { $if !windows { v.cc_windows_cross() return } } // Cross compiling for Linux if v.pref.os == .linux { $if !linux { v.cc_linux_cross() return } } // vexe := pref.vexe_path() vdir := os.dir(vexe) mut tried_compilation_commands := []string{} mut tcc_output := os.Result{} original_pwd := os.getwd() for { // try to compile with the choosen compiler // if compilation fails, retry again with another mut ccompiler := v.pref.ccompiler if v.pref.os == .ios { ios_sdk := if v.pref.is_ios_simulator { 'iphonesimulator' } else { 'iphoneos' } ios_sdk_path_res := os.execute_or_exit('xcrun --sdk $ios_sdk --show-sdk-path') mut isysroot := ios_sdk_path_res.output.replace('\n', '') arch := if v.pref.is_ios_simulator { '-arch x86_64' } else { '-arch armv7 -arch armv7s -arch arm64' } ccompiler = 'xcrun --sdk iphoneos clang -isysroot $isysroot $arch' } else if v.pref.os == .wasm32 { ccompiler = 'clang' } v.setup_ccompiler_options(ccompiler) v.build_thirdparty_obj_files() v.setup_output_name() if v.pref.os != .windows && ccompiler.contains('++') { cpp_atomic_h_path := '${@VEXEROOT}/thirdparty/stdatomic/nix/cpp/atomic.h' if !os.exists(cpp_atomic_h_path) { for file in v.parsed_files { if file.imports.any(it.mod.contains('sync')) { $if trace_stdatomic_gen ? { eprintln('> creating $cpp_atomic_h_path ...') } cppgenv := '${@VEXEROOT}/thirdparty/stdatomic/nix/cpp/gen.v' os.execute('${os.quoted_path(vexe)} run ${os.quoted_path(cppgenv)} ${os.quoted_path(ccompiler)}') break } } } } if v.pref.build_mode == .build_module { v.ccoptions.pre_args << '-c' } v.handle_usecache(vexe) if ccompiler == 'msvc' { v.cc_msvc() return } // all_args := v.all_args(v.ccoptions) v.dump_c_options(all_args) str_args := all_args.join(' ') mut cmd := '${os.quoted_path(ccompiler)} $str_args' mut response_file := '' mut response_file_content := str_args if !v.pref.no_rsp { response_file = '${v.out_name_c}.rsp' response_file_content = str_args.replace('\\', '\\\\') rspexpr := '@$response_file' cmd = '${os.quoted_path(ccompiler)} ${os.quoted_path(rspexpr)}' os.write_file(response_file, response_file_content) or { verror('Unable to write to C response file "$response_file"') } } if !v.ccoptions.debug_mode { v.pref.cleanup_files << v.out_name_c if !v.pref.no_rsp { v.pref.cleanup_files << response_file } } $if windows { if v.ccoptions.is_cc_tcc { def_name := v.pref.out_name[0..v.pref.out_name.len - 4] v.pref.cleanup_files << '${def_name}.def' } } // os.chdir(vdir) or {} tried_compilation_commands << cmd v.show_cc(cmd, response_file, response_file_content) // Run ccompiler_label := 'C ${os.file_name(ccompiler):3}' util.timing_start(ccompiler_label) res := os.execute(cmd) util.timing_measure(ccompiler_label) if v.pref.show_c_output { v.show_c_compiler_output(res) } os.chdir(original_pwd) or {} vcache.dlog('| Builder.' + @FN, '> v.pref.use_cache: $v.pref.use_cache | v.pref.retry_compilation: $v.pref.retry_compilation') vcache.dlog('| Builder.' + @FN, '> cmd res.exit_code: $res.exit_code | cmd: $cmd') vcache.dlog('| Builder.' + @FN, '> response_file_content:\n$response_file_content') if res.exit_code != 0 { if ccompiler.contains('tcc.exe') { // a TCC problem? Retry with the system cc: if tried_compilation_commands.len > 1 { eprintln('Recompilation loop detected (ccompiler: $ccompiler):') for recompile_command in tried_compilation_commands { eprintln(' $recompile_command') } exit(101) } if v.pref.retry_compilation { tcc_output = res v.pref.ccompiler = pref.default_c_compiler() if v.pref.is_verbose { eprintln('Compilation with tcc failed. Retrying with $v.pref.ccompiler ...') } continue } } if res.exit_code == 127 { verror('C compiler error, while attempting to run: \n' + '-----------------------------------------------------------\n' + '$cmd\n' + '-----------------------------------------------------------\n' + 'Probably your C compiler is missing. \n' + 'Please reinstall it, or make it available in your PATH.\n\n' + missing_compiler_info()) } } if !v.pref.show_c_output { // if tcc failed once, and the system C compiler has failed as well, // print the tcc error instead since it may contain more useful information // see https://discord.com/channels/592103645835821068/592115457029308427/811956304314761228 if res.exit_code != 0 && tcc_output.output != '' { v.post_process_c_compiler_output(tcc_output) } else { v.post_process_c_compiler_output(res) } } // Print the C command if v.pref.is_verbose { println('$ccompiler') println('=========\n') } break } if v.pref.compress { $if windows { println('-compress does not work on Windows for now') return } ret := os.system('strip $v.pref.out_name') if ret != 0 { println('strip failed') return } // Note: upx --lzma can sometimes fail with NotCompressibleException // See https://github.com/vlang/v/pull/3528 mut ret2 := os.system('upx --lzma -qqq $v.pref.out_name') if ret2 != 0 { ret2 = os.system('upx -qqq $v.pref.out_name') } if ret2 != 0 { println('upx failed') $if macos { println('install upx with `brew install upx`') } $if linux { println('install upx\n' + 'for example, on Debian/Ubuntu run `sudo apt install upx`') } $if windows { // :) } } } // if v.pref.os == .ios { // ret := os.system('ldid2 -S $v.pref.out_name') // if ret != 0 { // eprintln('failed to run ldid2, try: brew install ldid') // } // } } fn (mut b Builder) ensure_linuxroot_exists(sysroot string) { crossrepo_url := 'https://github.com/spytheman/vlinuxroot' sysroot_git_config_path := os.join_path(sysroot, '.git', 'config') if os.is_dir(sysroot) && !os.exists(sysroot_git_config_path) { // remove existing obsolete unarchived .zip file content os.rmdir_all(sysroot) or {} } if !os.is_dir(sysroot) { println('Downloading files for Linux cross compilation (~22MB) ...') os.system('git clone $crossrepo_url $sysroot') if !os.exists(sysroot_git_config_path) { verror('Failed to clone `$crossrepo_url` to `$sysroot`') } os.chmod(os.join_path(sysroot, 'ld.lld'), 0o755) or { panic(err) } } } fn (mut b Builder) cc_linux_cross() { b.setup_ccompiler_options(b.pref.ccompiler) b.build_thirdparty_obj_files() b.setup_output_name() parent_dir := os.vmodules_dir() if !os.exists(parent_dir) { os.mkdir(parent_dir) or { panic(err) } } sysroot := os.join_path(os.vmodules_dir(), 'linuxroot') b.ensure_linuxroot_exists(sysroot) obj_file := b.out_name_c + '.o' cflags := b.get_os_cflags() defines, others, libs := cflags.defines_others_libs() mut cc_args := []string{} cc_args << '-w' cc_args << '-fPIC' cc_args << '-c' cc_args << '-target x86_64-linux-gnu' cc_args << defines cc_args << '-I $sysroot/include ' cc_args << others cc_args << '-o "$obj_file"' cc_args << '-c "$b.out_name_c"' cc_args << libs b.dump_c_options(cc_args) cc_cmd := '${os.quoted_path('cc')} ' + cc_args.join(' ') if b.pref.show_cc { println(cc_cmd) } cc_res := os.execute(cc_cmd) if cc_res.exit_code != 0 { println('Cross compilation for Linux failed (first step, cc). Make sure you have clang installed.') verror(cc_res.output) return } mut linker_args := ['-L$sysroot/usr/lib/x86_64-linux-gnu/', '-L$sysroot/lib/x86_64-linux-gnu', '--sysroot=$sysroot', '-v', '-o $b.pref.out_name', '-m elf_x86_64', '-dynamic-linker /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2', '$sysroot/crt1.o $sysroot/crti.o $obj_file', '-lc', '-lcrypto', '-lssl', '-lpthread', '$sysroot/crtn.o', '-lm'] linker_args << cflags.c_options_only_object_files() // -ldl b.dump_c_options(linker_args) ldlld := '$sysroot/ld.lld' linker_cmd := '${os.quoted_path(ldlld)} ' + linker_args.join(' ') // s = s.replace('SYSROOT', sysroot) // TODO $ inter bug // s = s.replace('-o hi', '-o ' + c.pref.out_name) if b.pref.show_cc { println(linker_cmd) } res := os.execute(linker_cmd) if res.exit_code != 0 { println('Cross compilation for Linux failed (second step, lld).') verror(res.output) return } println(b.pref.out_name + ' has been successfully compiled') } fn (mut c Builder) cc_windows_cross() { println('Cross compiling for Windows...') c.setup_ccompiler_options(c.pref.ccompiler) c.build_thirdparty_obj_files() c.setup_output_name() if !c.pref.out_name.to_lower().ends_with('.exe') { c.pref.out_name += '.exe' } c.pref.out_name = os.quoted_path(c.pref.out_name) mut args := []string{} args << '$c.pref.cflags' args << '-o $c.pref.out_name' args << '-w -L.' // cflags := c.get_os_cflags() // -I flags if c.pref.ccompiler == 'msvc' { args << cflags.c_options_before_target_msvc() } else { args << cflags.c_options_before_target() } mut optimization_options := []string{} mut debug_options := []string{} if c.pref.is_prod { if c.pref.ccompiler != 'msvc' { optimization_options = ['-O3', '-fno-strict-aliasing', '-flto'] } } if c.pref.is_debug { if c.pref.ccompiler != 'msvc' { debug_options = ['-O0', '-g', '-gdwarf-2'] } } mut libs := []string{} if false && c.pref.build_mode == .default_mode { builtin_o := '"$pref.default_module_path/vlib/builtin.o"' libs << builtin_o if !os.exists(builtin_o) { verror('$builtin_o not found') } for imp in c.table.imports { libs << '"$pref.default_module_path/vlib/${imp}.o"' } } // add the thirdparty .o files, produced by all the #flag directives: args << cflags.c_options_only_object_files() args << os.quoted_path(c.out_name_c) if c.pref.ccompiler == 'msvc' { args << cflags.c_options_after_target_msvc() } else { args << cflags.c_options_after_target() } /* winroot := '${pref.default_module_path}/winroot' if !os.is_dir(winroot) { winroot_url := 'https://github.com/vlang/v/releases/download/v0.1.10/winroot.zip' println('"$winroot" not found.') println('Download it from $winroot_url and save it in ${pref.default_module_path}') println('Unzip it afterwards.\n') println('winroot.zip contains all library and header files needed ' + 'to cross-compile for Windows.') exit(1) } mut obj_name := c.out_name obj_name = obj_name.replace('.exe', '') obj_name = obj_name.replace('.o.o', '.o') include := '-I $winroot/include ' */ if os.user_os() !in ['macos', 'linux'] { println(os.user_os()) panic('your platform is not supported yet') } mut all_args := []string{} all_args << optimization_options all_args << debug_options all_args << '-std=gnu11' all_args << args all_args << '-municode' c.dump_c_options(all_args) mut cmd := pref.vcross_compiler_name(pref.cc_to_windows) + ' ' + all_args.join(' ') // cmd := 'clang -o $obj_name -w $include -m32 -c -target x86_64-win32 ${pref.default_module_path}/$c.out_name_c' if c.pref.is_verbose || c.pref.show_cc { println(cmd) } if os.system(cmd) != 0 { println('Cross compilation for Windows failed. Make sure you have mingw-w64 installed.') $if macos { println('brew install mingw-w64') } $if linux { println('Try `sudo apt install -y mingw-w64` on Debian based distros, or `sudo pacman -S mingw-w64-gcc` on Arch, etc...') } exit(1) } /* if c.pref.build_mode != .build_module { link_cmd := 'lld-link $obj_name $winroot/lib/libcmt.lib ' + '$winroot/lib/libucrt.lib $winroot/lib/kernel32.lib $winroot/lib/libvcruntime.lib ' + '$winroot/lib/uuid.lib' if c.pref.show_cc { println(link_cmd) } if os.system(link_cmd) != 0 { println('Cross compilation for Windows failed. Make sure you have lld linker installed.') exit(1) } // os.rm(obj_name) } */ println(c.pref.out_name + ' has been successfully compiled') } fn (mut b Builder) build_thirdparty_obj_files() { b.log('build_thirdparty_obj_files: v.ast.cflags: $b.table.cflags') for flag in b.get_os_cflags() { if flag.value.ends_with('.o') { rest_of_module_flags := b.get_rest_of_module_cflags(flag) if b.pref.ccompiler == 'msvc' { b.build_thirdparty_obj_file_with_msvc(flag.value, rest_of_module_flags) } else { b.build_thirdparty_obj_file(flag.value, rest_of_module_flags) } } } } fn (mut v Builder) build_thirdparty_obj_file(path string, moduleflags []cflag.CFlag) { obj_path := os.real_path(path) cfile := '${obj_path[..obj_path.len - 2]}.c' opath := v.pref.cache_manager.postfix_with_key2cpath('.o', obj_path) mut rebuild_reason_message := '$obj_path not found, building it in $opath ...' if os.exists(opath) { if os.exists(cfile) && os.file_last_mod_unix(opath) < os.file_last_mod_unix(cfile) { rebuild_reason_message = '$opath is older than $cfile, rebuilding ...' } else { return } } if os.exists(obj_path) { // Some .o files are distributed with no source // for example thirdparty\tcc\lib\openlibm.o // the best we can do for them is just copy them, // and hope that they work with any compiler... os.cp(obj_path, opath) or { panic(err) } return } if v.pref.is_verbose { println(rebuild_reason_message) } // prepare for tcc, it needs relative paths to thirdparty/tcc to work: current_folder := os.getwd() os.chdir(os.dir(pref.vexe_path())) or {} // mut all_options := []string{} all_options << v.pref.third_party_option all_options << moduleflags.c_options_before_target() all_options << '-o ${os.quoted_path(opath)}' all_options << '-c ${os.quoted_path(cfile)}' cc_options := v.thirdparty_object_args(v.ccoptions, all_options).join(' ') cmd := '${os.quoted_path(v.pref.ccompiler)} $cc_options' $if trace_thirdparty_obj_files ? { println('>>> build_thirdparty_obj_files cmd: $cmd') } res := os.execute(cmd) os.chdir(current_folder) or {} if res.exit_code != 0 { eprintln('failed thirdparty object build cmd:\n$cmd') verror(res.output) return } v.pref.cache_manager.save('.description.txt', obj_path, '${obj_path:-30} @ $cmd\n') or { panic(err) } if res.output != '' { println(res.output) } } fn missing_compiler_info() string { $if windows { return 'https://github.com/vlang/v/wiki/Installing-a-C-compiler-on-Windows' } $if linux { return 'On Debian/Ubuntu, run `sudo apt install build-essential`' } $if macos { return 'Install command line XCode tools with `xcode-select --install`' } return '' } fn error_context_lines(text string, keyword string, before int, after int) []string { khighlight := if term.can_show_color_on_stdout() { term.red(keyword) } else { keyword } mut eline_idx := -1 mut lines := text.split_into_lines() for idx, eline in lines { if eline.contains(keyword) { lines[idx] = lines[idx].replace(keyword, khighlight) if eline_idx == -1 { eline_idx = idx } } } idx_s := if eline_idx - before >= 0 { eline_idx - before } else { 0 } idx_e := if idx_s + after < lines.len { idx_s + after } else { lines.len } return lines[idx_s..idx_e] }