cross compiling perf

[Milian Wolff <milian.wolff@kdab.com>]

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Hey all,

I'm trying to compile a more modern version of the user-space perf tools for 
an arm64 embedded target. So far, no cigar.

Neither tools/build/Documentation nor tools/perf/Documentation/Build.txt 
explain how this should be done. Right now, I'm trying the following from an 
SDK with an environment that already sets up CC, CFLAGS etc. pp.

[SDK] ~/milian/linux/tools/perf$ make ARCH=arm64 CROSS_COMPILE=/home/sdk/
sysroots/x86_64-oesdk-linux/usr/bin/aarch64-gnu-linux/aarch64-gnu-linux- 
CFLAGS="--sysroot=/home/sdk/sysroots/aarch64-gnu-linux -I/home/milian/target-
prefix/include -L/home/milian/target-prefix/lib $CFLAGS" 
  BUILD:   Doing 'make -j8' parallel build

Auto-detecting system features:
...                         dwarf: [ OFF ]
...            dwarf_getlocations: [ OFF ]
...                         glibc: [ OFF ]
...                          gtk2: [ OFF ]
...                      libaudit: [ OFF ]
...                        libbfd: [ OFF ]
...                        libelf: [ OFF ]
...                       libnuma: [ OFF ]
...        numa_num_possible_cpus: [ OFF ]
...                       libperl: [ OFF ]
...                     libpython: [ OFF ]
...                      libslang: [ OFF ]
...                     libcrypto: [ OFF ]
...                     libunwind: [ OFF ]
...            libdw-dwarf-unwind: [ OFF ]
...                          zlib: [ OFF ]
...                          lzma: [ OFF ]
...                     get_cpuid: [ OFF ]
...                           bpf: [ OFF ]

config/Makefile:272: *** No gnu/libc-version.h found, please install glibc-
dev[el].  Stop

How can I figure out where perf's buildsystem is looking for the dependencies? 
How can I configure it to look into both, my sysroot as well as a secondary 
path that contains some additional software I compiled manually?

Thanks

-- 
Milian Wolff | milian.wolff@kdab.com | Software Engineer
KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
Tel: +49-30-521325470
KDAB - The Qt Experts

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