On Mon, May 16, 2016 at 07:27:25AM -0600, Shuah Khan wrote: > On 05/13/2016 06:05 AM, Muhammad Falak R Wani wrote: > > Add the macro _GNU_SOURCE, so that compilation does not terminate. > > What error are you seeing? Could you please send the compilation > error log. > > thanks, > -- Shuah > > > > Signed-off-by: Muhammad Falak R Wani <falakre...@gmail.com> > > --- > > tools/testing/selftests/intel_pstate/run.sh | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/tools/testing/selftests/intel_pstate/run.sh > > b/tools/testing/selftests/intel_pstate/run.sh > > index bdaf37e..7868c10 100755 > > --- a/tools/testing/selftests/intel_pstate/run.sh > > +++ b/tools/testing/selftests/intel_pstate/run.sh > > @@ -32,7 +32,7 @@ EVALUATE_ONLY=0 > > max_cpus=$(($(nproc)-1)) > > > > # compile programs > > -gcc -o aperf aperf.c -lm > > +gcc aperf.c -Wall -D_GNU_SOURCE -o aperf -lm > > [ $? -ne 0 ] && echo "Problem compiling aperf.c." && exit 1 > > gcc -o msr msr.c -lm > > [ $? -ne 0 ] && echo "Problem compiling msr.c." && exit 1 > > > When I try to run "run.sh", I get the following linker error ------
mfrw@kp:~/kp/tools/testing/selftests/intel_pstate$ ./run.sh /tmp/ccVLsFVk.o: In function `main': aperf.c:(.text+0x12e): undefined reference to `CPU_ZERO' aperf.c:(.text+0x14a): undefined reference to `CPU_SET' collect2: error: ld returned 1 exit status Problem compiling aperf.c. ------ The root cause of the problem is, we haven't defined a macro _GNU_SOURCE, which is necessary for CPU_ZERO, CPU_SET. After adding the appropriate macro, it compiles without any error.
