v/vlib/v/builder/cc.v

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// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
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module builder
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import os
import time
import v.cflag
import v.pref
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import v.util
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import term
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const (
c_verror_message_marker = 'VERROR_MESSAGE '
c_error_info = '
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==================
C error. This should never happen.
If you were not working with C interop, please raise an issue on GitHub:
https://github.com/vlang/v/issues/new/choose
You can also use #help on Discord: https://discord.gg/vlang
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'
no_compiler_error = '
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==================
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
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'
)
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const (
mingw_cc = 'x86_64-w64-mingw32-gcc'
)
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fn todo() {
}
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fn (mut v Builder) find_win_cc() ? {
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$if !windows {
return none
}
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os.exec('$v.pref.ccompiler -v') or {
if v.pref.is_verbose {
println('$v.pref.ccompiler not found, looking for msvc...')
}
find_msvc() or {
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if v.pref.is_verbose {
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println('msvc not found, looking for thirdparty/tcc...')
}
vpath := os.dir(pref.vexe_path())
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thirdparty_tcc := os.join_path(vpath, 'thirdparty', 'tcc', 'tcc.exe')
os.exec('$thirdparty_tcc -v') or {
if v.pref.is_verbose {
println('tcc not found')
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}
return none
}
v.pref.ccompiler = thirdparty_tcc
v.pref.ccompiler_type = .tinyc
return
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}
v.pref.ccompiler = 'msvc'
v.pref.ccompiler_type = .msvc
return
}
v.pref.ccompiler_type = pref.cc_from_string(v.pref.ccompiler)
}
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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 {
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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)
}
}
return
}
for emsg_marker in [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(c_error_info)
}
fn (mut v Builder) rebuild_cached_module(vexe string, imp_path string) string {
res := v.pref.cache_manager.exists('.o', imp_path) or {
println('Cached $imp_path .o file not found... Building .o file for $imp_path')
// do run `v build-module x` always in main vfolder; x can be a relative path
pwd := os.getwd()
vroot := os.dir(vexe)
os.chdir(vroot)
boptions := v.pref.build_options.join(' ')
rebuild_cmd := '$vexe $boptions build-module $imp_path'
// eprintln('>> rebuild_cmd: $rebuild_cmd')
os.system(rebuild_cmd)
rebuilded_o := v.pref.cache_manager.exists('.o', imp_path) or {
panic('could not rebuild cache module for $imp_path, error: $err')
}
os.chdir(pwd)
return rebuilded_o
}
return res
}
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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('')
println('=====================')
println('> C compiler cmd: $cmd')
if v.pref.show_cc {
println('> C compiler response file $response_file:')
println(response_file_content)
}
println('=====================')
}
}
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fn (mut v Builder) cc() {
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if os.executable().contains('vfmt') {
return
}
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if v.pref.is_verbose {
println('builder.cc() pref.out_name="$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
}
v.build_thirdparty_obj_files()
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vexe := pref.vexe_path()
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vdir := os.dir(vexe)
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// Just create a C/JavaScript file and exit
// for example: `v -o v.c compiler`
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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
// Translating V code to JS by launching vjs.
// Using a separate process for V.js is for performance mostly,
// to avoid constant is_js checks.
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$if !js {
if ends_with_js {
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vjs_path := vexe + 'js'
if !os.exists(vjs_path) {
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println('V.js compiler not found, building...')
// Build V.js. Specifying `-os js` makes V include
// only _js.v files and ignore _c.v files.
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ret := os.system('$vexe -o $vjs_path -os js $vdir/cmd/v')
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if ret == 0 {
println('Done.')
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} else {
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println('Failed.')
exit(1)
}
}
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ret := os.system('$vjs_path -o $v.pref.out_name $v.pref.path')
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if ret == 0 {
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println('Done. Run it with `node $v.pref.out_name`')
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println('JS backend is at a very early stage.')
}
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}
}
// v.out_name_c may be on a different partition than v.out_name
os.mv_by_cp(v.out_name_c, v.pref.out_name) or { panic(err) }
return
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}
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// Cross compiling for Windows
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if v.pref.os == .windows {
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$if !windows {
v.cc_windows_cross()
return
}
}
//
mut tried_compilation_commands := []string{}
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 windows {
if ccompiler == 'msvc' {
v.cc_msvc()
return
}
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}
if v.pref.os == .ios {
ios_sdk := if v.pref.is_ios_simulator { 'iphonesimulator' } else { 'iphoneos' }
ios_sdk_path_res := os.exec('xcrun --sdk $ios_sdk --show-sdk-path') or {
panic("Couldn\'t find iphonesimulator")
}
mut isysroot := ios_sdk_path_res.output.replace('\n', '')
ccompiler = 'xcrun --sdk iphoneos clang -isysroot $isysroot'
}
// arguments for the C compiler
// TODO : activate -Werror once no warnings remain
// '-Werror',
// TODO : try and remove the below workaround options when the corresponding
// warnings are totally fixed/removed
mut args := [v.pref.cflags, '-std=gnu99', '-Wall', '-Wextra', '-Wno-unused-variable', '-Wno-unused-parameter',
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'-Wno-unused-result', '-Wno-unused-function', '-Wno-missing-braces', '-Wno-unused-label', '-Wshadow',
'-Wno-unused',
]
if v.pref.os == .ios {
args << '-framework Foundation'
args << '-framework UIKit'
args << '-framework Metal'
args << '-framework MetalKit'
args << '-DSOKOL_METAL'
args << '-fobjc-arc'
}
mut linker_flags := []string{}
if !v.pref.is_shared && v.pref.build_mode != .build_module && os.user_os() == 'windows' &&
!v.pref.out_name.ends_with('.exe') {
v.pref.out_name += '.exe'
}
// linux_host := os.user_os() == 'linux'
v.log('cc() isprod=$v.pref.is_prod outname=$v.pref.out_name')
if v.pref.is_shared {
mut shared_postfix := '.so'
$if macos {
shared_postfix = '.dylib'
} $else $if windows {
shared_postfix = '.dll'
}
if !v.pref.out_name.ends_with(shared_postfix) {
v.pref.out_name += shared_postfix
}
linker_flags << '-shared'
args << '-fPIC' // -Wl,-z,defs'
}
if v.pref.is_bare {
args << '-fno-stack-protector'
args << '-ffreestanding'
linker_flags << '-static'
linker_flags << '-nostdlib'
}
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
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')
// println('v.table.imports:')
// println(v.table.imports)
}
debug_mode := v.pref.is_debug
mut debug_options := '-g3'
mut optimization_options := '-O2'
mut guessed_compiler := v.pref.ccompiler
if guessed_compiler == 'cc' && v.pref.is_prod {
// deliberately guessing only for -prod builds for performance reasons
if ccversion := os.exec('cc --version') {
if ccversion.exit_code == 0 {
if ccversion.output.contains('This is free software;') &&
ccversion.output.contains('Free Software Foundation, Inc.') {
guessed_compiler = 'gcc'
}
if ccversion.output.contains('clang version ') {
guessed_compiler = 'clang'
}
}
}
}
//
is_cc_tcc := ccompiler.contains('tcc') || guessed_compiler == 'tcc'
is_cc_clang := !is_cc_tcc && (ccompiler.contains('clang') || guessed_compiler == 'clang')
is_cc_gcc := !is_cc_tcc && !is_cc_clang &&
(ccompiler.contains('gcc') || guessed_compiler == 'gcc')
// is_cc_msvc := v.pref.ccompiler.contains('msvc') || guessed_compiler == 'msvc'
//
if is_cc_clang {
if debug_mode {
debug_options = '-g3 -O0'
}
optimization_options = '-O3'
mut have_flto := true
$if openbsd {
have_flto = false
}
if have_flto {
optimization_options += ' -flto'
}
}
if is_cc_gcc {
if debug_mode {
debug_options = '-g3 -no-pie'
}
optimization_options = '-O3 -fno-strict-aliasing -flto'
}
if debug_mode {
args << debug_options
// $if macos {
// args << ' -ferror-limit=5000 '
// }
}
if v.pref.is_prod {
args << optimization_options
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}
if v.pref.is_prod && !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
args << '-DNDEBUG'
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}
if debug_mode && os.user_os() != 'windows' {
linker_flags << ' -rdynamic ' // needed for nicer symbolic backtraces
}
if ccompiler != 'msvc' && v.pref.os != .freebsd {
args << '-Werror=implicit-function-declaration'
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}
if v.pref.is_liveshared || v.pref.is_livemain {
if v.pref.os == .linux || os.user_os() == 'linux' {
linker_flags << '-rdynamic'
}
if v.pref.os == .macos || os.user_os() == 'macos' {
args << '-flat_namespace'
}
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}
mut libs := '' // builtin.o os.o http.o etc
if v.pref.build_mode == .build_module {
args << '-c'
} else if v.pref.use_cache {
mut built_modules := []string{}
builtin_obj_path := v.rebuild_cached_module(vexe, 'vlib/builtin')
libs += ' ' + builtin_obj_path
for ast_file in v.parsed_files {
for imp_stmt in ast_file.imports {
imp := imp_stmt.mod
// strconv is already imported inside builtin, so skip generating its object file
// TODO: incase we have other modules with the same name, make sure they are vlib
// is this even doign anything?
if imp in ['strconv', 'strings'] {
continue
}
if imp in built_modules {
continue
}
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if util.should_bundle_module(imp) {
continue
}
// not working
if imp == 'webview' {
continue
}
// The problem is cmd/v is in module main and imports
// the relative module named help, which is built as cmd.v.help not help
// currently this got this workign by building into main, see ast.FnDecl in cgen
if imp == 'help' {
continue
}
// we are skipping help manually above, this code will skip all relative imports
// if os.is_dir(af_base_dir + os.path_separator + mod_path) {
// continue
// }
// mod_path := imp.replace('.', os.path_separator)
// imp_path := os.join_path('vlib', mod_path)
imp_path := v.find_module_path(imp, ast_file.path) or {
verror('cannot import module "$imp" (not found)')
break
}
obj_path := v.rebuild_cached_module(vexe, imp_path)
libs += ' ' + obj_path
if obj_path.ends_with('vlib/ui.o') {
args << '-framework Cocoa -framework Carbon'
}
built_modules << imp
}
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}
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}
if v.pref.sanitize {
args << '-fsanitize=leak'
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}
// Cross compiling for linux
if v.pref.os == .linux {
$if !linux {
v.cc_linux_cross()
return
}
}
// Cross compiling windows
//
// Output executable name
if v.pref.os == .ios {
bundle_name := v.pref.out_name.split('/').last()
args << '-o "${v.pref.out_name}.app/$bundle_name"'
} else {
args << '-o "$v.pref.out_name"'
}
if os.is_dir(v.pref.out_name) {
verror("'$v.pref.out_name' is a directory")
}
// macOS code can include objective C TODO remove once objective C is replaced with C
if v.pref.os == .macos || v.pref.os == .ios {
if !is_cc_tcc {
args << '-x objective-c'
}
}
// The C file we are compiling
args << '"$v.out_name_c"'
if v.pref.os == .macos {
args << '-x none'
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}
// Min macos version is mandatory I think?
if v.pref.os == .macos {
args << '-mmacosx-version-min=10.7'
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}
if v.pref.os == .ios {
args << '-miphoneos-version-min=10.0'
}
if v.pref.os == .windows {
args << '-municode'
}
cflags := v.get_os_cflags()
// add .o files
args << cflags.c_options_only_object_files()
// add all flags (-I -l -L etc) not .o files
args << cflags.c_options_without_object_files()
args << libs
// For C++ we must be very tolerant
if guessed_compiler.contains('++') {
args << '-fpermissive'
args << '-w'
}
// TODO: why is this duplicated from above?
if v.pref.use_cache {
// vexe := pref.vexe_path()
// cached_modules := ['builtin', 'os', 'math', 'strconv', 'strings', 'hash'], // , 'strconv.ftoa']
// for cfile in cached_modules {
// ofile := os.join_path(pref.default_module_path, 'cache', 'vlib', cfile.replace('.', '/') +
// '.o')
// if !os.exists(ofile) {
// println('${cfile}.o is missing. Building...')
// println('$vexe build-module vlib/$cfile')
// os.system('$vexe build-module vlib/$cfile')
// }
// args << ofile
// }
if !is_cc_tcc {
$if linux {
linker_flags << '-Xlinker -z'
linker_flags << '-Xlinker muldefs'
}
}
}
if is_cc_tcc && 'no_backtrace' !in v.pref.compile_defines {
args << '-bt25'
}
// Without these libs compilation will fail on Linux
// || os.user_os() == 'linux'
if !v.pref.is_bare && v.pref.build_mode != .build_module && v.pref.os in
[.linux, .freebsd, .openbsd, .netbsd, .dragonfly, .solaris, .haiku] {
linker_flags << '-lm'
linker_flags << '-lpthread'
// -ldl is a Linux only thing. BSDs have it in libc.
if v.pref.os == .linux {
linker_flags << '-ldl'
}
if v.pref.os == .freebsd {
// FreeBSD: backtrace needs execinfo library while linking
linker_flags << '-lexecinfo'
}
}
if !v.pref.is_bare && v.pref.os == .js && os.user_os() == 'linux' {
linker_flags << '-lm'
}
env_cflags := os.getenv('CFLAGS')
env_ldflags := os.getenv('LDFLAGS')
str_args := env_cflags + ' ' + args.join(' ') + ' ' + linker_flags.join(' ') + ' ' + env_ldflags
if v.pref.is_verbose {
println('cc args=$str_args')
println(args)
}
// write args to response file
response_file := '${v.out_name_c}.rsp'
response_file_content := str_args.replace('\\', '\\\\')
os.write_file(response_file, response_file_content) or {
verror('Unable to write response file "$response_file"')
}
if !debug_mode {
v.pref.cleanup_files << v.out_name_c
v.pref.cleanup_files << response_file
}
//
todo()
os.chdir(vdir)
cmd := '$ccompiler @$response_file'
tried_compilation_commands << cmd
v.show_cc(cmd, response_file, response_file_content)
// Run
ticks := time.ticks()
res := os.exec(cmd) or {
// C compilation failed.
// If we are on Windows, try msvc
println('C compilation failed.')
os.chdir(original_pwd)
/*
if os.user_os() == 'windows' && v.pref.ccompiler != 'msvc' {
println('Trying to build with MSVC')
v.cc_msvc()
return
}
*/
verror(err)
return
}
diff := time.ticks() - ticks
v.timing_message('C ${ccompiler:3}', diff)
if v.pref.show_c_output {
v.show_c_compiler_output(res)
}
os.chdir(original_pwd)
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)
}
v.pref.ccompiler = pref.default_c_compiler()
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())
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}
}
if !v.pref.show_c_output {
v.post_process_c_compiler_output(res)
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}
// Print the C command
if v.pref.is_verbose {
println('$ccompiler took $diff ms')
println('=========\n')
}
break
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}
// Link it if we are cross compiling and need an executable
/*
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if v.os == .linux && !linux_host && v.pref.build_mode != .build {
v.out_name = v.out_name.replace('.o', '')
obj_file := v.out_name + '.o'
println('linux obj_file=$obj_file out_name=$v.out_name')
ress := os.exec('/usr/local/Cellar/llvm/8.0.0/bin/ld.lld --sysroot=$sysroot ' +
'-v -o $v.out_name ' +
'-m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 ' +
'/usr/lib/x86_64-linux-gnu/crt1.o ' +
'$sysroot/lib/x86_64-linux-gnu/libm-2.28.a ' +
'/usr/lib/x86_64-linux-gnu/crti.o ' +
obj_file +
' /usr/lib/x86_64-linux-gnu/libc.so ' +
'/usr/lib/x86_64-linux-gnu/crtn.o') or {
verror(err)
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return
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}
println(ress.output)
println('linux cross compilation done. resulting binary: "$v.out_name"')
}
*/
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if v.pref.compress {
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$if windows {
println('-compress does not work on Windows for now')
return
}
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ret := os.system('strip $v.pref.out_name')
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if ret != 0 {
println('strip failed')
return
}
// NB: upx --lzma can sometimes fail with NotCompressibleException
// See https://github.com/vlang/v/pull/3528
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mut ret2 := os.system('upx --lzma -qqq $v.pref.out_name')
if ret2 != 0 {
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ret2 = os.system('upx -qqq $v.pref.out_name')
}
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if ret2 != 0 {
println('upx failed')
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$if macos {
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println('install upx with `brew install upx`')
}
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$if linux {
println('install upx\n' +
'for example, on Debian/Ubuntu run `sudo apt install upx`')
}
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$if windows {
// :)
}
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}
}
// 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')
// }
// }
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}
fn (mut b Builder) cc_linux_cross() {
parent_dir := os.vmodules_dir()
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if !os.exists(parent_dir) {
os.mkdir(parent_dir)
}
sysroot := os.join_path(os.vmodules_dir(), 'linuxroot')
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if !os.is_dir(sysroot) {
println('Downloading files for Linux cross compilation (~18 MB)...')
zip_url := 'https://github.com/vlang/v/releases/download/0.1.27/linuxroot.zip'
zip_file := sysroot + '.zip'
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os.system('curl -L -o $zip_file $zip_url')
if !os.exists(zip_file) {
verror('Failed to download `$zip_url` as $zip_file')
}
os.system('tar -C $parent_dir -xf $zip_file')
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if !os.is_dir(sysroot) {
verror('Failed to unzip $zip_file to $parent_dir')
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}
}
obj_file := b.out_name_c + '.o'
mut cc_args := '-fPIC -w -c -target x86_64-linux-gnu -c -o $obj_file $b.out_name_c -I $sysroot/include '
cflags := b.get_os_cflags()
cc_args += cflags.c_options_without_object_files()
cc_cmd := 'cc $cc_args'
if b.pref.show_cc {
println(cc_cmd)
}
cc_res := os.exec(cc_cmd) or {
println('Cross compilation for Linux failed (first step, cc). Make sure you have clang installed.')
verror(err)
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return
}
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)
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}
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linker_args := ['-L $sysroot/usr/lib/x86_64-linux-gnu/', '--sysroot=$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', cflags.c_options_only_object_files()]
// -ldl
linker_args_str := linker_args.join(' ')
linker_cmd := '$sysroot/ld.lld $linker_args_str'
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// 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.exec(linker_cmd) or {
println('Cross compilation for Linux failed (second step, lld).')
verror(err)
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return
}
if res.exit_code != 0 {
println('Cross compilation for Linux failed (second step, lld).')
verror(res.output)
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}
println(b.pref.out_name + ' has been successfully compiled')
}
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fn (mut c Builder) cc_windows_cross() {
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println('Cross compiling for Windows...')
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if !c.pref.out_name.ends_with('.exe') {
c.pref.out_name += '.exe'
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}
mut args := ''
args += ' $c.pref.cflags '
args += ' -o $c.pref.out_name -w -L. '
//
cflags := c.get_os_cflags()
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// -I flags
args += if c.pref.ccompiler == 'msvc' { cflags.c_options_before_target_msvc() } else { cflags.c_options_before_target() }
mut optimization_options := ''
mut debug_options := ''
if c.pref.is_prod {
if c.pref.ccompiler != 'msvc' {
optimization_options = ' -O3 -fno-strict-aliasing -flto '
}
}
if c.pref.is_debug {
if c.pref.ccompiler != 'msvc' {
debug_options = ' -O0 -g -gdwarf-2 '
}
}
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mut libs := ''
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if false && c.pref.build_mode == .default_mode {
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libs = '"$pref.default_module_path/vlib/builtin.o"'
if !os.exists(libs) {
verror('`$libs` not found')
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}
for imp in c.table.imports {
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libs += ' "$pref.default_module_path/vlib/${imp}.o"'
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}
}
// add the thirdparty .o files, produced by all the #flag directives:
args += ' ' + cflags.c_options_only_object_files() + ' '
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args += ' $c.out_name_c '
args += if c.pref.ccompiler == 'msvc' { cflags.c_options_after_target_msvc() } else { cflags.c_options_after_target() }
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/*
winroot := '${pref.default_module_path}/winroot'
if !os.is_dir(winroot) {
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winroot_url := 'https://github.com/vlang/v/releases/download/v0.1.10/winroot.zip'
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println('"$winroot" not found.')
println('Download it from $winroot_url and save it in ${pref.default_module_path}')
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println('Unzip it afterwards.\n')
println('winroot.zip contains all library and header files needed ' + 'to cross-compile for Windows.')
exit(1)
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}
mut obj_name := c.out_name
obj_name = obj_name.replace('.exe', '')
obj_name = obj_name.replace('.o.o', '.o')
include := '-I $winroot/include '
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*/
if os.user_os() !in ['macos', 'linux'] {
println(os.user_os())
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panic('your platform is not supported yet')
}
mut cmd := '$mingw_cc $optimization_options $debug_options -std=gnu11 $args -municode'
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// 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)
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}
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...')
}
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exit(1)
}
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/*
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 {
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println(link_cmd)
}
if os.system(link_cmd) != 0 {
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println('Cross compilation for Windows failed. Make sure you have lld linker installed.')
exit(1)
}
// os.rm(obj_name)
}
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*/
println(c.pref.out_name + ' has been successfully compiled')
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}
fn (mut v Builder) build_thirdparty_obj_files() {
v.log('build_thirdparty_obj_files: v.table.cflags: $v.table.cflags')
for flag in v.get_os_cflags() {
if flag.value.ends_with('.o') {
rest_of_module_flags := v.get_rest_of_module_cflags(flag)
if v.pref.ccompiler == 'msvc' {
v.build_thirdparty_obj_file_with_msvc(flag.value, rest_of_module_flags)
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} else {
v.build_thirdparty_obj_file(flag.value, rest_of_module_flags)
}
}
}
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}
fn (mut v Builder) build_thirdparty_obj_file(path string, moduleflags []cflag.CFlag) {
obj_path := os.real_path(path)
if v.pref.os == .windows {
// Cross compiling for Windows
$if !windows {
v.pref.ccompiler = mingw_cc
}
}
opath := v.pref.cache_manager.postfix_with_key2cpath('.o', obj_path)
if os.exists(opath) {
return
}
if os.exists(obj_path) {
// Some .o files are distributed with no source
// for example thirdparty\tcc\lib\openlibm.o
// the best we can do for them is just copy them,
// and hope that they work with any compiler...
os.cp(obj_path, opath)
return
}
println('$obj_path not found, building it in $opath ...')
cfile := '${obj_path[..obj_path.len - 2]}.c'
btarget := moduleflags.c_options_before_target()
atarget := moduleflags.c_options_after_target()
cppoptions := if v.pref.ccompiler.contains('++') { ' -fpermissive -w ' } else { '' }
//
// prepare for tcc, it needs relative paths to thirdparty/tcc to work:
current_folder := os.getwd()
os.chdir(os.dir(pref.vexe_path()))
//
cmd := '$v.pref.ccompiler $cppoptions $v.pref.third_party_option $btarget -o "$opath" -c "$cfile" $atarget'
// eprintln('>>> cmd: $cmd')
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res := os.exec(cmd) or {
eprintln('exec failed for thirdparty object build cmd:\n$cmd')
verror(err)
return
}
os.chdir(current_folder)
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')
println(res.output)
}
fn missing_compiler_info() string {
$if windows {
return 'https://github.com/vlang/v/wiki/Installing-a-C-compiler-on-Windows'
}
$if linux {
return 'On Debian/Ubuntu, run `sudo apt install build-essential`'
}
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$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 := 0
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 == 0 {
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]
}