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authorSedat Dilek <sedat.dilek@gmail.com>2021-01-28 04:50:58 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2021-01-29 03:25:34 +0300
commit211a741cd3e124bffdc13ee82e7e65f204e53f60 (patch)
treee7eab76b69728369b3df4f691732ab9828512da9 /tools/scripts
parent8259fdeb3032621c7cc7aa3f2676ffd470303305 (diff)
downloadlinux-211a741cd3e124bffdc13ee82e7e65f204e53f60.tar.xz
tools: Factor Clang, LLC and LLVM utils definitions
When dealing with BPF/BTF/pahole and DWARF v5 I wanted to build bpftool. While looking into the source code I found duplicate assignments in misc tools for the LLVM eco system, e.g. clang and llvm-objcopy. Move the Clang, LLC and/or LLVM utils definitions to tools/scripts/Makefile.include file and add missing includes where needed. Honestly, I was inspired by the commit c8a950d0d3b9 ("tools: Factor HOSTCC, HOSTLD, HOSTAR definitions"). I tested with bpftool and perf on Debian/testing AMD64 and LLVM/Clang v11.1.0-rc1. Build instructions: [ make and make-options ] MAKE="make V=1" MAKE_OPTS="HOSTCC=clang HOSTCXX=clang++ HOSTLD=ld.lld CC=clang LD=ld.lld LLVM=1 LLVM_IAS=1" MAKE_OPTS="$MAKE_OPTS PAHOLE=/opt/pahole/bin/pahole" [ clean-up ] $MAKE $MAKE_OPTS -C tools/ clean [ bpftool ] $MAKE $MAKE_OPTS -C tools/bpf/bpftool/ [ perf ] PYTHON=python3 $MAKE $MAKE_OPTS -C tools/perf/ I was careful with respecting the user's wish to override custom compiler, linker, GNU/binutils and/or LLVM utils settings. Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> # tools/build and tools/perf Link: https://lore.kernel.org/bpf/20210128015117.20515-1-sedat.dilek@gmail.com
Diffstat (limited to 'tools/scripts')
-rw-r--r--tools/scripts/Makefile.include7
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 1358e89cdf7d..4255e71f72b7 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -69,6 +69,13 @@ HOSTCC ?= gcc
HOSTLD ?= ld
endif
+# Some tools require Clang, LLC and/or LLVM utils
+CLANG ?= clang
+LLC ?= llc
+LLVM_CONFIG ?= llvm-config
+LLVM_OBJCOPY ?= llvm-objcopy
+LLVM_STRIP ?= llvm-strip
+
ifeq ($(CC_NO_CLANG), 1)
EXTRA_WARNINGS += -Wstrict-aliasing=3
endif