"-flto -O2" shouln't opt out "undefined reference" error

2017-01-16 Thread Xuefer
without -flto or without -O2 produce good (expected) result: configure:5332: checking for dlsym configure:5369: clang -o conftest -O2 -pipe -march=ivybridge -O2 -pipe conftest.c >&5 /tmp/conftest-597c62.o:conftest.c:function main: error: undefined reference to 'd

Re: "-flto -O2" shouln't opt out "undefined reference" error

2017-01-17 Thread Xuefer
On 01/16/2017 10:32 AM, Xuefer wrote: > without -flto or without -O2 produce good (expected) result: > > configure:5332: checking for dlsym > ... It isn't the linker that is the problem here. It is the compiler. But it isn't a compiler bug. An