thank you~I got it. 在 2019年8月28日星期三 UTC+8上午11:59:42，Justin Israel写道： > > > > On Wed, Aug 28, 2019, 3:47 PM <w1252...@gmail.com <javascript:>> wrote: > >> I find the package you build with 'go build >> buildmode=c-archive/c-shared', when you build you code with the lib, the >> outer need to have main func, I don't know why. >> > > That requirement is documented here: > https://golang.org/cmd/go/#hdr-Build_modes > > >> 在 2016年5月18日星期三 UTC+8上午11:11:57，Justin Israel写道： >>> >>> I'm wondering if someone can tell me if this is either a limitation of >>> buildmode=c-archive static libs, or if I am really just doing something >>> wrong. >>> >>> Problematic steps: >>> >>> 1. export functions to libgofoo.a using buildmode=c-archive >>> 2. statically link libgofoo.a into another library to produce >>> libfoo.a >>> 3. Someone else consumes libfoo.a and libgofoo.a in their library, >>> and get linker errors about: >>> ld: libgofoo.a(go.o): relocation R_X86_64_TPOFF32 against >>> `runtime.tlsg` can not be used when making a shared object; recompile >>> with >>> -fPIC >>> libgofoo.a: could not read symbols: Bad value >>> >>> But library that wants to consume these libs can do so if they >>> dynamically link with shared libs from c-shared. Also, if the consumer >>> of the libs is a main binary, then the static linking works and does not >>> complain. It is only when the target is a library. >>> >>> I could swear I went through and ensured -fPIC was being used, but it >>> didn't seem to make a difference. Am I infact just messing up my >>> compilation settings and failing to add this flag as it suggests, or is >>> there a known limitation related to the steps I have outlined? >>> >>> Thanks! >>> Justin >>> >>> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "golang-nuts" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/golang-nuts/EhndTzcPJxQ/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> golan...@googlegroups.com <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/golang-nuts/2032198a-00dd-40a8-a8aa-489e9ae406bf%40googlegroups.com >> >> <https://groups.google.com/d/msgid/golang-nuts/2032198a-00dd-40a8-a8aa-489e9ae406bf%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >
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