the libgmon.a is an empty archive. These are the contents of /usr/i686-pc-mingw32/sys-root/mingw/lib/libgmon.a
$ od -c libgmon.a 0000000 ! < a r c h > \n 0000010 This becomes a problem when attempting to prepare an executable for profiling with gprof /bin/i686-pc-mingw32-gcc.exe -pg -o hello hello.c result: /usr/i686-pc-mingw32/sys-root/mingw/lib/gcrt2.o: In function `monstartup': /usr/src/debug/mingw-runtime-4.0-1/misc/gpl/profile/gcrt0.c:46: undefined reference to `monstartup' /usr/src/debug/mingw-runtime-4.0-1/misc/gpl/profile/gcrt0.c:47: undefined reference to `_mcleanup' /tmp/ccPFHeDJ.o:hello.c:(.text+0xa): undefined reference to `mcount' collect2: error: ld returned 1 exit status I replaced libgmon.a with this one: https://github.com/jonasstrandstedt/MinGW/blob/master/MinGW/lib/libgmon.a and then the profiling for i686-pc-mingw32 works fine. Maybe a next release of mingw-runtime can include a functional libgmon.a ? Kind regards, Teun Burgers -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
