On Fri, Mar 27, 2015 at 3:39 PM, Asma Dab <asmad...@yahoo.fr> wrote: > Hello, > > I try to compile perf-examples in libpfm4.6 with the GCC compiler in Linux > 3.5.0-23-generic, But i've got this error message: > > asma@asma-Inspiron-N4050:~/Bureau/PMM/libpfm-4.6.0/perf_examples$ gcc > -fopenmp self.c > /tmp/ccCwfEbh.o: In function `main': > self.c:(.text+0x3d1): undefined reference to `pfm_initialize' > self.c:(.text+0x3e4): undefined reference to `pfm_strerror' > self.c:(.text+0x423): undefined reference to `perf_setup_argv_events' > self.c:(.text+0x670): undefined reference to `perf_free_fds' > self.c:(.text+0x675): undefined reference to `pfm_terminate' > collect2: ld a retourné 1 code d'état d'exécution > > Can you please tell me what to do? > You need to edit the perf_examples/Makefile to add the -fopenmp to the rule to make self. Otherwise you have to explicitly link with libpfm4 (-lpfm)
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