From 22dd1ac91a77675238d10059c479ab6fa6160c60 Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Tue, 18 Aug 2020 18:36:07 -0700 Subject: tools: Remove feature-libelf-mmap feature detection It's trivial to handle missing ELF_C_MMAP_READ support in libelf the way that objtool has solved it in ("774bec3fddcc objtool: Add fallback from ELF_C_READ_MMAP to ELF_C_READ"). So instead of having an entire feature detector for that, just do what objtool does for perf and libbpf. And keep their Makefiles a bit simpler. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200819013607.3607269-5-andriin@fb.com --- tools/perf/util/symbol.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/util/symbol.h') diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index ff4f4c47e148..03e264a27cd3 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -28,7 +28,7 @@ struct option; * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP; * for newer versions we can use mmap to reduce memory usage: */ -#ifdef HAVE_LIBELF_MMAP_SUPPORT +#ifdef ELF_C_READ_MMAP # define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP #else # define PERF_ELF_C_READ_MMAP ELF_C_READ -- cgit v1.2.3