On Fri Apr 22, 2016 at 15:58:41 +0200, ba_f wrote:

while migrating to the latest l4re-snapshot-2015123115, I run into an issue with dynamic linking. The code is tested on an older snapshot and works great, there.

Well, let's look at the simplified libmy.so and its output:

I tried to reproduce this but did not succeed. Here are the files that I used. What do you see using those files? Lib: Makefile: PKGDIR ?= ../.. L4DIR ?= $(PKGDIR)/../.. TARGET = libt1.so SRC_CC = lib.cc include $(L4DIR)/mk/lib.mk lib.cc: #include <l4/re/env> #include <stdio.h> int myInit(); int myInit(){ L4::Cap<void> server = L4Re::Env::env()->get_cap<void>("123"); printf("hi\n"); return !server.is_valid(); } Program: PKGDIR ?= ../.. L4DIR ?= $(PKGDIR)/../.. TARGET = t1 MODE = shared SRC_CC = main.cc LIBS += -lt1 include $(L4DIR)/mk/prog.mk main.cc: int myInit(); int main() { myInit(); return 0; }

/* my.cc */ #include <stdlib.h> #include <l4/sys/err.h> #include <l4/sys/types.h> #include <l4/re/env> #include <l4/re/util/cap_alloc> #include <l4/cxx/ipc_stream> #include <l4/re/dataspace>

#include "shared.h"

uint32_t myInit(){

L4::Cap<Calc> server = L4Re::Env::env()->get_cap<Calc>("calc_server"); if (!server.is_valid()) { // printf("Could not get server capability!\n"); return 1; } return 0; }

Ned says: Hi World! Ned: loading file: 'rom/my.cfg' Client | Client | : symbol 'l4re_global_env': can't resolve symbol

When there is only one single printf() in myInit() I see this output:

Ned says: Hi World! Ned: loading file: 'rom/my.cfg' Client | Client | : symbol 'memcpy': can't resolve symbol Client | Client | : symbol 'puts': can't resolve symbol Client | Client | : symbol 'abort': can't resolve symbol

Do I miss something in modules.list?

I think not because than there would be an earlier error.

entry my roottask moe rom/my.cfg module ned module l4re module my.cfg module my_server module my_ldloader module libmy.so module libld-l4.so module libl4util.so module libl4sys.so module libl4sys-direct.so module libdl.so module lib4re.so module lib4re-util.so module libc_support_misc.so module libc_be_socket_noop.so module libc_be_l4refile.so module libc_be_l4re.so module libsupc++.so module libuc_c.so

Adam -- Adam adam@os.inf.tu-dresden.de Lackorzynski http://os.inf.tu-dresden.de/~adam/