[PATCH v4 04/18] perf clang: Pass full path to builtin clang

If clang changes its working directory, relative path passed to perf_clang__compile_bpf() becomes invalid. Before running clang, convert it to absolute path so file can be found even working directory is changed. Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo

[PATCH v4 04/18] perf clang: Pass full path to builtin clang

If clang changes its working directory, relative path passed to perf_clang__compile_bpf() becomes invalid. Before running clang, convert it to absolute path so file can be found even working directory is changed. Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo Cc: Alexei Starovoitov Cc: