cling/test/DynamicLibraryManager/call.C
Vassil Vassilev 55a4e89b3b Fix ROOT-10484 by implementing dyld support for RPATH.
Some libraries are layered can depend on other libraries on a private paths.
That is, libA can depend on libB which is neither on the LD_LIBRARY_PATH nor
on a known system path. The posix linker injects "variables" such as @rpath
which is expanded at link time to resolve the libraries on a relative path.

Prior to this patch, cling's Dyld-based symbol resolution could not trace down
such cases causing failures in symbol resolution when a symbol is only defined
in libB (a private library).

This patch implements the basic posix linker substitutions allowing cling's
Dyld-based symbol resolution implementation to follow more closely the linker
rules.

Kudos Alexander Penev (@alexander-penev).
2021-08-07 09:29:07 +02:00

23 lines
897 B
C

//------------------------------------------------------------------------------
// CLING - the C++ LLVM-based InterpreterG :)
//
// This file is dual-licensed: you can choose to license it under the University
// of Illinois Open Source License or the GNU Lesser General Public License. See
// LICENSE.TXT for details.
//------------------------------------------------------------------------------
// RUN: mkdir -p %t-dir/lib
// RUN: %clang -shared -DCLING_EXPORT=%dllexport %S/call_lib.c -o%t-dir/lib/libcall_lib%shlibext
// RUN: cat %s | %cling -L%t-dir/lib 2>&1 | FileCheck %s
// Test: Lookup and load library call_lib. Lookup functions from libraries and
// use them to print result value.
.L libcall_lib
extern "C" int cling_testlibrary_function();
int i = cling_testlibrary_function();
extern "C" int printf(const char* fmt, ...);
printf("got i=%d\n", i); // CHECK: got i=42
.q