mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-08-04 11:07:46 +00:00
Ayke van Laethem
922ba6a4a3
This adds support for the 'go install' case, where we link against the
system LLVM (Homebrew, Linux distro version, etc). This does not have an
effect on `make`, which still uses LLVM 19 for now.
The main reason for doing this is because newer distros like Fedora 42
and Homebrew have switched to LLVM 20, so switching to this newer
version helps those people. (I'm one of those people, I'm on Fedora 42).
There are two small changes for WebAssembly included:
* nontrapping-fptoint was enabled in the wasmbuiltin library used for
wasm-unknown. This matches wasm-unknown which already had this
enabled, so it doesn't add any new instructions.
* bulk-memory was enabled in wasi-libc. This was previously enabled in
all the other WebAssembly targets (wasm, wasip1, wasip2) so this
does't add any new instructions. I think it was also enabled in the
wasi-libc build before
https://github.com/tinygo-org/tinygo/pull/4820 but I don't know for
sure.
280 lines
9.8 KiB
Go
280 lines
9.8 KiB
Go
package builder
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"github.com/tinygo-org/tinygo/goenv"
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)
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var libWasiLibc = Library{
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name: "wasi-libc",
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makeHeaders: func(target, includeDir string) error {
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bits := filepath.Join(includeDir, "bits")
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err := os.Mkdir(bits, 0777)
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if err != nil {
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return err
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}
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muslDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib", "wasi-libc/libc-top-half/musl")
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err = buildMuslAllTypes("wasm32", muslDir, bits)
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if err != nil {
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return err
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}
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// See MUSL_OMIT_HEADERS in the Makefile.
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omitHeaders := map[string]struct{}{
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"syslog.h": {},
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"wait.h": {},
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"ucontext.h": {},
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"paths.h": {},
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"utmp.h": {},
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"utmpx.h": {},
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"lastlog.h": {},
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"elf.h": {},
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"link.h": {},
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"pwd.h": {},
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"shadow.h": {},
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"grp.h": {},
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"mntent.h": {},
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"netdb.h": {},
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"resolv.h": {},
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"pty.h": {},
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"dlfcn.h": {},
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"setjmp.h": {},
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"ulimit.h": {},
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"wordexp.h": {},
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"spawn.h": {},
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"termios.h": {},
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"libintl.h": {},
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"aio.h": {},
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"stdarg.h": {},
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"stddef.h": {},
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"pthread.h": {},
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}
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for _, glob := range [][2]string{
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{"libc-bottom-half/headers/public/*.h", ""},
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{"libc-bottom-half/headers/public/wasi/*.h", "wasi"},
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{"libc-top-half/musl/arch/wasm32/bits/*.h", "bits"},
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{"libc-top-half/musl/include/*.h", ""},
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{"libc-top-half/musl/include/netinet/*.h", "netinet"},
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{"libc-top-half/musl/include/sys/*.h", "sys"},
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} {
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matches, _ := filepath.Glob(filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc", glob[0]))
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outDir := filepath.Join(includeDir, glob[1])
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os.MkdirAll(outDir, 0o777)
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for _, match := range matches {
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name := filepath.Base(match)
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if _, ok := omitHeaders[name]; ok {
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continue
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}
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data, err := os.ReadFile(match)
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if err != nil {
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return err
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}
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err = os.WriteFile(filepath.Join(outDir, name), data, 0o666)
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if err != nil {
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return err
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}
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}
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}
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return nil
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},
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cflags: func(target, headerPath string) []string {
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libcDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc")
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return []string{
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"-Werror",
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"-Wall",
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"-std=gnu11",
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"-nostdlibinc",
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"-mnontrapping-fptoint", "-msign-ext", "-mbulk-memory",
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"-Wno-null-pointer-arithmetic", "-Wno-unused-parameter", "-Wno-sign-compare", "-Wno-unused-variable", "-Wno-unused-function", "-Wno-ignored-attributes", "-Wno-missing-braces", "-Wno-ignored-pragmas", "-Wno-unused-but-set-variable", "-Wno-unknown-warning-option",
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"-Wno-parentheses", "-Wno-shift-op-parentheses", "-Wno-bitwise-op-parentheses", "-Wno-logical-op-parentheses", "-Wno-string-plus-int", "-Wno-dangling-else", "-Wno-unknown-pragmas",
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"-DNDEBUG",
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"-D__wasilibc_printscan_no_long_double",
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"-D__wasilibc_printscan_full_support_option=\"long double support is disabled\"",
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"-DBULK_MEMORY_THRESHOLD=32", // default threshold in wasi-libc
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"-isystem", headerPath,
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"-I" + libcDir + "/libc-top-half/musl/src/include",
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"-I" + libcDir + "/libc-top-half/musl/src/internal",
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"-I" + libcDir + "/libc-top-half/musl/arch/wasm32",
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"-I" + libcDir + "/libc-top-half/musl/arch/generic",
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"-I" + libcDir + "/libc-top-half/headers/private",
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}
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},
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cflagsForFile: func(path string) []string {
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if strings.HasPrefix(path, "libc-bottom-half"+string(os.PathSeparator)) {
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libcDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc")
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return []string{
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"-I" + libcDir + "/libc-bottom-half/headers/private",
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"-I" + libcDir + "/libc-bottom-half/cloudlibc/src/include",
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"-I" + libcDir + "/libc-bottom-half/cloudlibc/src",
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}
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}
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return nil
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},
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sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc") },
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librarySources: func(target string) ([]string, error) {
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type filePattern struct {
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glob string
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exclude []string
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}
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// See: LIBC_TOP_HALF_MUSL_SOURCES in the Makefile
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globs := []filePattern{
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// Top half: mostly musl sources.
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{glob: "libc-top-half/sources/*.c"},
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{glob: "libc-top-half/musl/src/conf/*.c"},
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{glob: "libc-top-half/musl/src/internal/*.c", exclude: []string{
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"procfdname.c", "syscall.c", "syscall_ret.c", "vdso.c", "version.c",
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}},
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{glob: "libc-top-half/musl/src/locale/*.c", exclude: []string{
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"dcngettext.c", "textdomain.c", "bind_textdomain_codeset.c"}},
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{glob: "libc-top-half/musl/src/math/*.c", exclude: []string{
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"__signbit.c", "__signbitf.c", "__signbitl.c",
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"__fpclassify.c", "__fpclassifyf.c", "__fpclassifyl.c",
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"ceilf.c", "ceil.c",
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"floorf.c", "floor.c",
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"truncf.c", "trunc.c",
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"rintf.c", "rint.c",
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"nearbyintf.c", "nearbyint.c",
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"sqrtf.c", "sqrt.c",
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"fabsf.c", "fabs.c",
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"copysignf.c", "copysign.c",
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"fminf.c", "fmaxf.c",
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"fmin.c", "fmax.c,",
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}},
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{glob: "libc-top-half/musl/src/multibyte/*.c"},
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{glob: "libc-top-half/musl/src/stdio/*.c", exclude: []string{
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"vfwscanf.c", "vfwprintf.c", // long double is unsupported
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"__lockfile.c", "flockfile.c", "funlockfile.c", "ftrylockfile.c",
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"rename.c",
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"tmpnam.c", "tmpfile.c", "tempnam.c",
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"popen.c", "pclose.c",
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"remove.c",
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"gets.c"}},
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{glob: "libc-top-half/musl/src/stdlib/*.c"},
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{glob: "libc-top-half/musl/src/string/*.c", exclude: []string{
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"strsignal.c"}},
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// Bottom half: connect top half to WASI equivalents.
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{glob: "libc-bottom-half/cloudlibc/src/libc/*/*.c"},
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{glob: "libc-bottom-half/cloudlibc/src/libc/sys/*/*.c"},
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{glob: "libc-bottom-half/sources/*.c"},
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}
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// See: LIBC_TOP_HALF_MUSL_SOURCES in the Makefile
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sources := []string{
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"libc-top-half/musl/src/misc/a64l.c",
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"libc-top-half/musl/src/misc/basename.c",
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"libc-top-half/musl/src/misc/dirname.c",
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"libc-top-half/musl/src/misc/ffs.c",
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"libc-top-half/musl/src/misc/ffsl.c",
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"libc-top-half/musl/src/misc/ffsll.c",
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"libc-top-half/musl/src/misc/fmtmsg.c",
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"libc-top-half/musl/src/misc/getdomainname.c",
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"libc-top-half/musl/src/misc/gethostid.c",
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"libc-top-half/musl/src/misc/getopt.c",
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"libc-top-half/musl/src/misc/getopt_long.c",
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"libc-top-half/musl/src/misc/getsubopt.c",
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"libc-top-half/musl/src/misc/uname.c",
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"libc-top-half/musl/src/misc/nftw.c",
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"libc-top-half/musl/src/errno/strerror.c",
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"libc-top-half/musl/src/network/htonl.c",
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"libc-top-half/musl/src/network/htons.c",
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"libc-top-half/musl/src/network/ntohl.c",
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"libc-top-half/musl/src/network/ntohs.c",
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"libc-top-half/musl/src/network/inet_ntop.c",
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"libc-top-half/musl/src/network/inet_pton.c",
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"libc-top-half/musl/src/network/inet_aton.c",
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"libc-top-half/musl/src/network/in6addr_any.c",
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"libc-top-half/musl/src/network/in6addr_loopback.c",
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"libc-top-half/musl/src/fenv/fenv.c",
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"libc-top-half/musl/src/fenv/fesetround.c",
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"libc-top-half/musl/src/fenv/feupdateenv.c",
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"libc-top-half/musl/src/fenv/fesetexceptflag.c",
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"libc-top-half/musl/src/fenv/fegetexceptflag.c",
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"libc-top-half/musl/src/fenv/feholdexcept.c",
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"libc-top-half/musl/src/exit/exit.c",
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"libc-top-half/musl/src/exit/atexit.c",
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"libc-top-half/musl/src/exit/assert.c",
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"libc-top-half/musl/src/exit/quick_exit.c",
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"libc-top-half/musl/src/exit/at_quick_exit.c",
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"libc-top-half/musl/src/time/strftime.c",
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"libc-top-half/musl/src/time/asctime.c",
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"libc-top-half/musl/src/time/asctime_r.c",
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"libc-top-half/musl/src/time/ctime.c",
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"libc-top-half/musl/src/time/ctime_r.c",
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"libc-top-half/musl/src/time/wcsftime.c",
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"libc-top-half/musl/src/time/strptime.c",
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"libc-top-half/musl/src/time/difftime.c",
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"libc-top-half/musl/src/time/timegm.c",
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"libc-top-half/musl/src/time/ftime.c",
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"libc-top-half/musl/src/time/gmtime.c",
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"libc-top-half/musl/src/time/gmtime_r.c",
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"libc-top-half/musl/src/time/timespec_get.c",
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"libc-top-half/musl/src/time/getdate.c",
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"libc-top-half/musl/src/time/localtime.c",
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"libc-top-half/musl/src/time/localtime_r.c",
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"libc-top-half/musl/src/time/mktime.c",
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"libc-top-half/musl/src/time/__tm_to_secs.c",
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"libc-top-half/musl/src/time/__month_to_secs.c",
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"libc-top-half/musl/src/time/__secs_to_tm.c",
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"libc-top-half/musl/src/time/__year_to_secs.c",
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"libc-top-half/musl/src/time/__tz.c",
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"libc-top-half/musl/src/fcntl/creat.c",
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"libc-top-half/musl/src/dirent/alphasort.c",
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"libc-top-half/musl/src/dirent/versionsort.c",
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"libc-top-half/musl/src/env/__stack_chk_fail.c",
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"libc-top-half/musl/src/env/clearenv.c",
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"libc-top-half/musl/src/env/getenv.c",
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"libc-top-half/musl/src/env/putenv.c",
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"libc-top-half/musl/src/env/setenv.c",
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"libc-top-half/musl/src/env/unsetenv.c",
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"libc-top-half/musl/src/unistd/posix_close.c",
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"libc-top-half/musl/src/stat/futimesat.c",
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"libc-top-half/musl/src/legacy/getpagesize.c",
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"libc-top-half/musl/src/thread/thrd_sleep.c",
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}
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basepath := goenv.Get("TINYGOROOT") + "/lib/wasi-libc/"
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for _, pattern := range globs {
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matches, err := filepath.Glob(basepath + pattern.glob)
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if err != nil {
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// From the documentation:
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// > Glob ignores file system errors such as I/O errors reading
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// > directories. The only possible returned error is
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// > ErrBadPattern, when pattern is malformed.
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// So the only possible error is when the (statically defined)
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// pattern is wrong. In other words, a programming bug.
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return nil, fmt.Errorf("wasi-libc: could not glob source dirs: %w", err)
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}
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if len(matches) == 0 {
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return nil, fmt.Errorf("wasi-libc: did not find any files for pattern %#v", pattern)
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}
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excludeSet := map[string]struct{}{}
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for _, exclude := range pattern.exclude {
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excludeSet[exclude] = struct{}{}
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}
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for _, match := range matches {
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if _, ok := excludeSet[filepath.Base(match)]; ok {
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continue
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}
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relpath, err := filepath.Rel(basepath, match)
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if err != nil {
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// Not sure if this is even possible.
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return nil, err
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}
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sources = append(sources, relpath)
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}
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}
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return sources, nil
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},
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}
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