@@ -100,7 +100,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
100100 AutomaticStackSize : config .AutomaticStackSize (),
101101 DefaultStackSize : config .Target .DefaultStackSize ,
102102 NeedsStackObjects : config .NeedsStackObjects (),
103- Debug : config . Debug () ,
103+ Debug : true ,
104104 LLVMFeatures : config .LLVMFeatures (),
105105 }
106106
@@ -470,33 +470,10 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
470470 linkerDependencies = append (linkerDependencies , job )
471471 }
472472
473- // Add libc dependency if needed.
474- root := goenv .Get ("TINYGOROOT" )
475- switch config .Target .Libc {
476- case "picolibc" :
477- job , err := Picolibc .load (config .Triple (), config .CPU (), dir )
478- if err != nil {
479- return err
480- }
481- // The library needs to be compiled (cache miss).
482- jobs = append (jobs , job .dependencies ... )
483- jobs = append (jobs , job )
484- linkerDependencies = append (linkerDependencies , job )
485- case "wasi-libc" :
486- path := filepath .Join (root , "lib/wasi-libc/sysroot/lib/wasm32-wasi/libc.a" )
487- if _ , err := os .Stat (path ); os .IsNotExist (err ) {
488- return errors .New ("could not find wasi-libc, perhaps you need to run `make wasi-libc`?" )
489- }
490- ldflags = append (ldflags , path )
491- case "" :
492- // no library specified, so nothing to do
493- default :
494- return fmt .Errorf ("unknown libc: %s" , config .Target .Libc )
495- }
496-
497473 // Add jobs to compile extra files. These files are in C or assembly and
498474 // contain things like the interrupt vector table and low level operations
499475 // such as stack switching.
476+ root := goenv .Get ("TINYGOROOT" )
500477 for _ , path := range config .ExtraFiles () {
501478 abspath := filepath .Join (root , path )
502479 job := & compileJob {
@@ -537,6 +514,64 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
537514 ldflags = append (ldflags , lprogram .LDFlags ... )
538515 }
539516
517+ // Add libc dependency if needed.
518+ switch config .Target .Libc {
519+ case "picolibc" :
520+ job , err := Picolibc .load (config .Triple (), config .CPU (), dir )
521+ if err != nil {
522+ return err
523+ }
524+ // The library needs to be compiled (cache miss).
525+ jobs = append (jobs , job .dependencies ... )
526+ jobs = append (jobs , job )
527+ linkerDependencies = append (linkerDependencies , job )
528+ case "wasi-libc" :
529+ path := filepath .Join (root , "lib/wasi-libc/sysroot/lib/wasm32-wasi/libc.a" )
530+ if _ , err := os .Stat (path ); os .IsNotExist (err ) {
531+ return errors .New ("could not find wasi-libc, perhaps you need to run `make wasi-libc`?" )
532+ }
533+ job := dummyCompileJob (path )
534+ jobs = append (jobs , job )
535+ linkerDependencies = append (linkerDependencies , job )
536+ case "" :
537+ // no library specified, so nothing to do
538+ default :
539+ return fmt .Errorf ("unknown libc: %s" , config .Target .Libc )
540+ }
541+
542+ // Strip debug information with -no-debug.
543+ if ! config .Debug () {
544+ for _ , tag := range config .BuildTags () {
545+ if tag == "baremetal" {
546+ // Don't use -no-debug on baremetal targets. It makes no sense:
547+ // the debug information isn't flashed to the device anyway.
548+ return fmt .Errorf ("stripping debug information is unnecessary for baremetal targets" )
549+ }
550+ }
551+ if config .Target .Linker == "wasm-ld" {
552+ // Don't just strip debug information, also compress relocations
553+ // while we're at it. Relocations can only be compressed when debug
554+ // information is stripped.
555+ ldflags = append (ldflags , "--strip-debug" , "--compress-relocations" )
556+ } else {
557+ switch config .GOOS () {
558+ case "linux" :
559+ // Either real linux or an embedded system (like AVR) that
560+ // pretends to be Linux. It's a ELF linker wrapped by GCC in any
561+ // case.
562+ ldflags = append (ldflags , "-Wl,--strip-debug" )
563+ case "darwin" :
564+ // MacOS (darwin) doesn't have a linker flag to strip debug
565+ // information. Apple expects you to use the strip command
566+ // instead.
567+ return errors .New ("cannot remove debug information: MacOS doesn't suppor this linker flag" )
568+ default :
569+ // Other OSes may have different flags.
570+ return errors .New ("cannot remove debug information: unknown OS: " + config .GOOS ())
571+ }
572+ }
573+ }
574+
540575 // Create a linker job, which links all object files together and does some
541576 // extra stuff that can only be done after linking.
542577 jobs = append (jobs , & compileJob {
0 commit comments