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Message-ID: <54ECEE37.80603@quicknet.nl>
Date: Tue, 24 Feb 2015 22:33:43 +0100
From: Teun Burgers <a DOT rburgers AT quicknet DOT nl>
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To: cygwin AT cygwin DOT com
Subject: mingw-runtime 4.01: empty libgmon.a
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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

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