25/10/2019 03:20, Rafael Ávila de Espíndola: > Running ld with '-r' switches the linker to a very special mode where > some other linker options don't make sense. > > In particular, '--export-dynamic' normally requires that all global > symbols be included in the dynamic symbol table, but a .o file doesn't > even have a dynamic symbol table. > > When given both options it looks like the gnu linker just ignores > '--export-dynamic'. > > Unfortunately some versions of lld (https://lld.llvm.org/) have a bug > that causes it to try to create a dynamic symbol table in the output > .o file and ends up corrupting it > (https://bugs.llvm.org/show_bug.cgi?id=43552). Current (git) version > of lld now issues an error. > > This patch drops $(LDFLAGS) when using -r. With this patch I can build > dpdk with lld. [...] > -PMDINFO_LD = $(CROSS)ld $(LDFLAGS) -r -o $@.o $@.pmd.o $@ > +PMDINFO_LD = $(CROSS)ld -r -o $@.o $@.pmd.o $@
Dealing with compiler bugs is really annoying. I'm afraid removing LDFLAGS may break in some environments. Could you just filter-out some incompatible options? And what about meson? Is there some similar issue?
