// Record unversioned name as seen.
			seenlib[name] = true
			libraries[name] = lib
		} else if _, ok := libraries[lib]; !ok {
			libraries[lib] = lib
		}
	}

	libs = nil
	for _, lib := range libraries {
		libs = append(libs, lib)
	}
	sort.Strings(libs)

	return libs
}

func dedupLibraries(ctxt *Link, libs []string) []string {
	if ctxt.Target.IsOpenbsd() {

// except that it uses poll instead of select and is written in Go.
// It's also based on Solaris implementation for the arming mechanisms

//go:cgo_import_dynamic libc_poll poll "libc.a/shr_64.o"
//go:linkname libc_poll libc_poll

var libc_poll libFunc

//go:nosplit
func poll(pfds *pollfd, npfds uintptr, timeout uintptr) (int32, int32) {

}

func (t *Target) UsesLibc() bool {
	t.mustSetHeadType()
	switch t.HeadType {
	case objabi.Haix, objabi.Hdarwin, objabi.Hopenbsd, objabi.Hsolaris, objabi.Hwindows:
		// platforms where we use libc for syscalls.
		return true
	}
	return false

	// 7f7d7797c000-7f7d77b36000 r-xp 00000000 fc:01 1180226                    /lib/x86_64-linux-gnu/libc-2.19.so
	// 7f7d77b36000-7f7d77d36000 ---p 001ba000 fc:01 1180226                    /lib/x86_64-linux-gnu/libc-2.19.so
	// 7f7d77d36000-7f7d77d3a000 r--p 001ba000 fc:01 1180226                    /lib/x86_64-linux-gnu/libc-2.19.so

	sz := _C_sysconf(_C_int(k))
	if sz == -1 {
		// DragonFly and FreeBSD do not have _SC_GETPW_R_SIZE_MAX.
		// Additionally, not all Linux systems have it, either. For
		// example, the musl libc returns -1.
		return 1024
	}
	if !isSizeReasonable(int64(sz)) {
		// Truncate.  If this truly isn't enough, retryWithBuffer will error on the first run.
		return maxBufferSize
	}
	return _C_size_t(sz)
}

        given:
        mavenRepo.module("org", "libA", "1.0").dependsOn("org", "libB", "1.0").dependsOn("org", "libC", "1.0").publish()
        mavenRepo.module("org", "libB", "1.0").publish()
        mavenRepo.module("org", "libC", "1.0").publish()

        file("build.gradle") << """
            repositories {
                maven { url "${mavenRepo.uri}" }

  //
  // The compiler may delete the default constructor here because
  // host_compute_core is a const member whose type (std::map) doesn't
  // necessarily have a user provided constructor -- while libc++ and
  // libstdc++ 4.8 provide a user defined default constructor, libstdc++ at
  // least >= 7.3 does not. See also c++11 [class.ctor] p5.
  //
  // TODO(klimek): In c++17 we'll be able to initialize host_compute_core

// 1. It should be a signal that's passed-through by debuggers by
// default. On Linux, this is SIGALRM, SIGURG, SIGCHLD, SIGIO,
// SIGVTALRM, SIGPROF, and SIGWINCH, plus some glibc-internal signals.
//
// 2. It shouldn't be used internally by libc in mixed Go/C binaries
// because libc may assume it's the only thing that can handle these
// signals. For example SIGCANCEL or SIGSETXID.
//
// 3. It should be a signal that can happen spuriously without

	pid, err = forkExec(argv0, argv, attr)
	return pid, 0, err
}

// Implemented in runtime package.
func runtime_BeforeExec()
func runtime_AfterExec()

// execveLibc is non-nil on OS using libc syscall, set to execve in exec_libc.go; this
// avoids a build dependency for other platforms.
var execveLibc func(path uintptr, argv uintptr, envp uintptr) Errno
var execveDarwin func(path *byte, argv **byte, envp **byte) error

	CLD

	CALL	runtime·stackcheck(SB)	// clobbers AX,CX
	CALL	runtime·mstart(SB)

	XORL	AX, AX			// return 0 == success
	MOVL	AX, ret+8(FP)
	RET

// Careful, this is called by __sighndlr, a libc function. We must preserve
// registers as per AMD 64 ABI.
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME|NOFRAME,$0
	// Note that we are executing on altsigstack here, so we have