can anyone have any clue ? Thanks, Eugene Thanks, yixuan On Wed, Apr 29, 2015 at 5:29 PM, Yixuan Huang <yixuan178@xxxxxxxxx> wrote: > Hello all, > I download gcc4.9.2 source code and build it on centos 6. as following parmater: > $ ../gcc-4.9.2/configure --program-suffix=-4.9.2 > --enable-languages=c,c++ --disable-bootstrap --disable-shared > > i can use gcc-4.9.2 or g++-4.9.2 to compile source code. I just do a > quick test for hello.cpp which only print out 'hello', and use > 'g++-4.9.2 hello.cpp' or 'gcc-4.9.2 hello.cpp -lstdc++'. > When I used 'objdump -t a.out', I can see following result: > [root@centos6 test]# objdump -t a.out |grep debug > 0000000000000000 l d .debug_aranges 0000000000000000 > .debug_aranges > 0000000000000000 l d .debug_info 0000000000000000 .debug_info > 0000000000000000 l d .debug_abbrev 0000000000000000 > .debug_abbrev > 0000000000000000 l d .debug_line 0000000000000000 .debug_line > 0000000000000000 l d .debug_str 0000000000000000 .debug_str > 0000000000000000 l d .debug_loc 0000000000000000 .debug_loc > 0000000000000000 l d .debug_ranges 0000000000000000 > .debug_ranges > > but when I used gcc 4.4 by default on centos or gcc 4.9.2 by default > on fedora 21, I also compile above .cpp, and get following result. > [root@fedora21 test]# objdump -t a.out |grep debug > [root@fedora21 test]# > > I am not sure if that mean my first a.out is debug version or not. How > can my build gcc4.9.2 work same as fedora21. Please help guide. > > Thanks, > yixuan
