ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2025-02-20 09:46:20 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

rust: don't export cxx syms from libunwind-rust

Browse Source
This commit is contained in:
Norman Feske 2019-08-22 14:21:30 +02:00 committed by Christian Helmuth
parent a98f78afd9
commit 808ff3714e
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
repos/libports/lib/mk/libunwind-rust.mk
View File

@ -3,3 +3,19 @@ LIBS = libcore-rust
vpath % $(REP_DIR)/src/lib/rust/libunwind
CC_CXX_WARN_STRICT =
#
# libunwind contains the public symbol '_Unwind_Resume', which clashes with
# the symbol provided by the cxx library. The aliasing can lead to unexpected
# symbol resolutions by the dynamic linker at runtime, i.e., a C++ exception
# thrown in the libc ending up in the '_Unwind_Resume' code of libunwind-rust.
#
# This rule solves this uncertainty by making the symbol private to the
# libunwind library.
#
ifeq ($(called_from_lib_mk),yes)
$(LIB).lib.a: hide_cxx_symbols
hide_cxx_symbols: lib.o
$(VERBOSE)cp $< $<.tmp
$(VERBOSE)$(OBJCOPY) --localize-symbol=_Unwind_Resume $<.tmp $<
endif