From 5c5b664130165e41e8af1947e47b73b0cd6d1af2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= Date: Fri, 4 Oct 2019 17:34:44 +0200 Subject: [PATCH] BACKPORT: libbpf: Add cscope and tags targets to Makefile MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Using cscope and/or TAGS files for navigating the source code is useful. Add simple targets to the Makefile to generate the index files for both tools. Change-Id: I9453b09945b2a290be088a556e3f7d853589d4c7 Signed-off-by: Toke Høiland-Jørgensen Signed-off-by: Alexei Starovoitov Tested-by: Andrii Nakryiko Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20191004153444.1711278-1-toke@redhat.com --- tools/lib/bpf/.gitignore | 3 +++ tools/lib/bpf/Makefile | 12 +++++++++++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/tools/lib/bpf/.gitignore b/tools/lib/bpf/.gitignore index d9e9dec04605..12382b0c71c7 100644 --- a/tools/lib/bpf/.gitignore +++ b/tools/lib/bpf/.gitignore @@ -3,3 +3,6 @@ libbpf.pc FEATURE-DUMP.libbpf test_libbpf libbpf.so.* +TAGS +tags +cscope.* diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile index 9758bfa59232..a170d33c0b5d 100644 --- a/tools/lib/bpf/Makefile +++ b/tools/lib/bpf/Makefile @@ -143,6 +143,8 @@ LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET)) LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE)) PC_FILE := $(addprefix $(OUTPUT),$(PC_FILE)) +TAGS_PROG := $(if $(shell which etags 2>/dev/null),etags,ctags) + GLOBAL_SYM_COUNT = $(shell readelf -s --wide $(BPF_IN_SHARED) | \ cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \ sed 's/\[.*\]//' | \ @@ -277,7 +279,7 @@ clean: -PHONY += force elfdep bpfdep +PHONY += force elfdep bpfdep cscope tags force: elfdep: @@ -286,6 +288,14 @@ elfdep: bpfdep: @if [ "$(feature-bpf)" != "1" ]; then echo "BPF API too old"; exit 1 ; fi +cscope: + ls *.c *.h > cscope.files + cscope -b -q -I $(srctree)/include -f cscope.out + +tags: + rm -f TAGS tags + ls *.c *.h | xargs $(TAGS_PROG) -a + # Declare the contents of the .PHONY variable as phony. We keep that # information in a variable so we can use it in if_changed and friends. .PHONY: $(PHONY)