I've been recommended gperftools to simply and quickly profile my code. Furthermore, the integration of -lprofiler was already done in the CMAKE of the code I got. Now that I migrated the source code on to the Jetson TX1 and that it worked well, I've tried to use gperftools.
Unfortunately, segmentation faults start to appear as soon as I launch my program with perftools
env CPUPROFILE=./lts.prof /mybin
I've read the documentation and they talk about using the correct libunwind for 64 bit Linux. Unfortunately, the given library (0.99 libunwind, http://download.savannah.gnu.org/releases/libunwind/libunwind-0.99-beta.tar.gz) does not seem to like the Tegra platform.
First of all, there is a problem with the config.guess, that I had to change with the one located in /usr/share/automake*/.
configure: error: cannot guess build type; you must specify one
Then it goes wrong like this :
config.status: error: ./include/libunwind-aarch64.h: file not found
I've tried to use the master tree because they added AARCH64 (which appeared in the error messages), but then I get other messages :
aarch64/is_fpreg.c:31:21: error: 'UNW_AARCH64_V0' undeclared (first use in this function)
return (regnum >= UNW_AARCH64_V0 && regnum <= UNW_AARCH64_V31);
aarch64/is_fpreg.c:31:49: error: 'UNW_AARCH64_V31' undeclared (first use in this function)
return (regnum >= UNW_AARCH64_V0 && regnum <= UNW_AARCH64_V31);
- As anyone been able to use gperftools on a Tegra Dev Kit or similar platform ?
- Is the libunwind part of the segfault problem ? Again the code works without -lprofiler and CPUPROFILER.
