| Message ID | 20210116095413.72820-1-sedat.dilek@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | [RFC] tools: Factor Clang, LLC and LLVM utils definitions | expand |
On Sat, Jan 16, 2021 at 10:54:04AM +0100, Sedat Dilek wrote: > 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 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 $MAKE_OPTS -C tools/perf/ > > I was careful with respecting the user's wish to override custom compiler, > linker, GNU/binutils and/or LLVM utils settings. > > Some personal notes: > 1. I have NOT tested with cross-toolchain for other archs (cross compiler/linker etc.). > 2. This patch is on top of Linux v5.11-rc3. > > I hope to get some feedback from especially Linux-bpf folks. > > Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> > --- > tools/bpf/bpftool/Makefile | 2 -- > tools/bpf/runqslower/Makefile | 3 --- > tools/build/feature/Makefile | 4 ++-- > tools/perf/Makefile.perf | 1 - for tools/build and tools/perf Acked-by: Jiri Olsa <jolsa@redhat.com> jirka > tools/scripts/Makefile.include | 7 +++++++ > tools/testing/selftests/bpf/Makefile | 3 +-- > tools/testing/selftests/tc-testing/Makefile | 3 +-- > 7 files changed, 11 insertions(+), 12 deletions(-) > > diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile > index f897cb5fb12d..71c14efa6e91 100644 > --- a/tools/bpf/bpftool/Makefile > +++ b/tools/bpf/bpftool/Makefile SNIP
On Wed, Jan 20, 2021 at 11:36 PM Jiri Olsa <jolsa@redhat.com> wrote: > > On Sat, Jan 16, 2021 at 10:54:04AM +0100, Sedat Dilek wrote: > > When dealing with BPF/BTF/pahole and DWARF v5 I wanted to build bpftool. > > > > While looking into the source code I found duplicate assignments > > in misc tools for the LLVM eco system, e.g. clang and llvm-objcopy. > > > > Move the Clang, LLC and/or LLVM utils definitions to > > tools/scripts/Makefile.include file and add missing > > includes where needed. > > Honestly, I was inspired by commit c8a950d0d3b9 > > ("tools: Factor HOSTCC, HOSTLD, HOSTAR definitions"). > > > > I tested with bpftool and perf on Debian/testing AMD64 and > > LLVM/Clang v11.1.0-rc1. > > > > Build instructions: > > > > [ make and make-options ] > > MAKE="make V=1" > > MAKE_OPTS="HOSTCC=clang HOSTCXX=clang++ HOSTLD=ld.lld CC=clang LD=ld.lld LLVM=1 LLVM_IAS=1" > > MAKE_OPTS="$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. > > > > Some personal notes: > > 1. I have NOT tested with cross-toolchain for other archs (cross compiler/linker etc.). > > 2. This patch is on top of Linux v5.11-rc3. > > > > I hope to get some feedback from especially Linux-bpf folks. > > > > Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> > > --- > > tools/bpf/bpftool/Makefile | 2 -- > > tools/bpf/runqslower/Makefile | 3 --- > > tools/build/feature/Makefile | 4 ++-- > > tools/perf/Makefile.perf | 1 - > > for tools/build and tools/perf > > Acked-by: Jiri Olsa <jolsa@redhat.com> > Thanks Jiri for your feedback and ACK. - Sedat - > jirka > > > tools/scripts/Makefile.include | 7 +++++++ > > tools/testing/selftests/bpf/Makefile | 3 +-- > > tools/testing/selftests/tc-testing/Makefile | 3 +-- > > 7 files changed, 11 insertions(+), 12 deletions(-) > > > > diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile > > index f897cb5fb12d..71c14efa6e91 100644 > > --- a/tools/bpf/bpftool/Makefile > > +++ b/tools/bpf/bpftool/Makefile > > SNIP >
On Wed, Jan 20, 2021 at 2:36 PM Jiri Olsa <jolsa@redhat.com> wrote: > > On Sat, Jan 16, 2021 at 10:54:04AM +0100, Sedat Dilek wrote: > > 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 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. > > > > Some personal notes: > > 1. I have NOT tested with cross-toolchain for other archs (cross compiler/linker etc.). > > 2. This patch is on top of Linux v5.11-rc3. > > > > I hope to get some feedback from especially Linux-bpf folks. > > > > Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> > > --- > > tools/bpf/bpftool/Makefile | 2 -- > > tools/bpf/runqslower/Makefile | 3 --- > > tools/build/feature/Makefile | 4 ++-- > > tools/perf/Makefile.perf | 1 - > > for tools/build and tools/perf > > Acked-by: Jiri Olsa <jolsa@redhat.com> > It's pretty straightforward and looks good for bpftool and runqslower, but I couldn't apply directly to test due to merge conflicts. Also, which tree this should go through, given it touches multiple parts under tools/? > jirka > > > tools/scripts/Makefile.include | 7 +++++++ > > tools/testing/selftests/bpf/Makefile | 3 +-- > > tools/testing/selftests/tc-testing/Makefile | 3 +-- > > 7 files changed, 11 insertions(+), 12 deletions(-) > > > > diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile > > index f897cb5fb12d..71c14efa6e91 100644 > > --- a/tools/bpf/bpftool/Makefile > > +++ b/tools/bpf/bpftool/Makefile > > SNIP >
On Fri, Jan 22, 2021 at 1:04 AM Andrii Nakryiko <andrii.nakryiko@gmail.com> wrote: > > On Wed, Jan 20, 2021 at 2:36 PM Jiri Olsa <jolsa@redhat.com> wrote: > > > > On Sat, Jan 16, 2021 at 10:54:04AM +0100, Sedat Dilek wrote: > > > 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 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. > > > > > > Some personal notes: > > > 1. I have NOT tested with cross-toolchain for other archs (cross compiler/linker etc.). > > > 2. This patch is on top of Linux v5.11-rc3. > > > > > > I hope to get some feedback from especially Linux-bpf folks. > > > > > > Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> > > > --- > > > tools/bpf/bpftool/Makefile | 2 -- > > > tools/bpf/runqslower/Makefile | 3 --- > > > tools/build/feature/Makefile | 4 ++-- > > > tools/perf/Makefile.perf | 1 - > > > > for tools/build and tools/perf > > > > Acked-by: Jiri Olsa <jolsa@redhat.com> > > > > It's pretty straightforward and looks good for bpftool and runqslower, > but I couldn't apply directly to test due to merge conflicts. > > Also, which tree this should go through, given it touches multiple > parts under tools/? > Sorry, for the conflicts. AFAICS I should do this again against Linux v5.11-rc4 vanilla? Is this OK to you? Good hint, cannot say through which tree this should go through. - Sedat - > > jirka > > > > > tools/scripts/Makefile.include | 7 +++++++ > > > tools/testing/selftests/bpf/Makefile | 3 +-- > > > tools/testing/selftests/tc-testing/Makefile | 3 +-- > > > 7 files changed, 11 insertions(+), 12 deletions(-) > > > > > > diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile > > > index f897cb5fb12d..71c14efa6e91 100644 > > > --- a/tools/bpf/bpftool/Makefile > > > +++ b/tools/bpf/bpftool/Makefile > > > > SNIP > >
On Fri, Jan 22, 2021 at 1:12 AM Sedat Dilek <sedat.dilek@gmail.com> wrote: > > On Fri, Jan 22, 2021 at 1:04 AM Andrii Nakryiko > <andrii.nakryiko@gmail.com> wrote: > > > > On Wed, Jan 20, 2021 at 2:36 PM Jiri Olsa <jolsa@redhat.com> wrote: > > > > > > On Sat, Jan 16, 2021 at 10:54:04AM +0100, Sedat Dilek wrote: > > > > 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 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. > > > > > > > > Some personal notes: > > > > 1. I have NOT tested with cross-toolchain for other archs (cross compiler/linker etc.). > > > > 2. This patch is on top of Linux v5.11-rc3. > > > > > > > > I hope to get some feedback from especially Linux-bpf folks. > > > > > > > > Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> > > > > --- > > > > tools/bpf/bpftool/Makefile | 2 -- > > > > tools/bpf/runqslower/Makefile | 3 --- > > > > tools/build/feature/Makefile | 4 ++-- > > > > tools/perf/Makefile.perf | 1 - > > > > > > for tools/build and tools/perf > > > > > > Acked-by: Jiri Olsa <jolsa@redhat.com> > > > > > > > It's pretty straightforward and looks good for bpftool and runqslower, > > but I couldn't apply directly to test due to merge conflicts. > > > > Also, which tree this should go through, given it touches multiple > > parts under tools/? > > > > Sorry, for the conflicts. > AFAICS I should do this again against Linux v5.11-rc4 vanilla? > Is this OK to you? > I re-checked: This patch was on top of Linux v5.11-rc3 and applies cleanly against Linux v5.11-rc. Please let me know if I should adapt to a different Git tree. - Sedat - > Good hint, cannot say through which tree this should go through. > > - Sedat - > > > > jirka > > > > > > > tools/scripts/Makefile.include | 7 +++++++ > > > > tools/testing/selftests/bpf/Makefile | 3 +-- > > > > tools/testing/selftests/tc-testing/Makefile | 3 +-- > > > > 7 files changed, 11 insertions(+), 12 deletions(-) > > > > > > > > diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile > > > > index f897cb5fb12d..71c14efa6e91 100644 > > > > --- a/tools/bpf/bpftool/Makefile > > > > +++ b/tools/bpf/bpftool/Makefile > > > > > > SNIP > > >
On Fri, Jan 22, 2021 at 1:21 AM Sedat Dilek <sedat.dilek@gmail.com> wrote: > > On Fri, Jan 22, 2021 at 1:12 AM Sedat Dilek <sedat.dilek@gmail.com> wrote: > > > > On Fri, Jan 22, 2021 at 1:04 AM Andrii Nakryiko > > <andrii.nakryiko@gmail.com> wrote: > > > > > > On Wed, Jan 20, 2021 at 2:36 PM Jiri Olsa <jolsa@redhat.com> wrote: > > > > > > > > On Sat, Jan 16, 2021 at 10:54:04AM +0100, Sedat Dilek wrote: > > > > > 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 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. > > > > > > > > > > Some personal notes: > > > > > 1. I have NOT tested with cross-toolchain for other archs (cross compiler/linker etc.). > > > > > 2. This patch is on top of Linux v5.11-rc3. > > > > > > > > > > I hope to get some feedback from especially Linux-bpf folks. > > > > > > > > > > Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> > > > > > --- > > > > > tools/bpf/bpftool/Makefile | 2 -- > > > > > tools/bpf/runqslower/Makefile | 3 --- > > > > > tools/build/feature/Makefile | 4 ++-- > > > > > tools/perf/Makefile.perf | 1 - > > > > > > > > for tools/build and tools/perf > > > > > > > > Acked-by: Jiri Olsa <jolsa@redhat.com> > > > > > > > > > > It's pretty straightforward and looks good for bpftool and runqslower, > > > but I couldn't apply directly to test due to merge conflicts. > > > > > > Also, which tree this should go through, given it touches multiple > > > parts under tools/? > > > > > > > Sorry, for the conflicts. > > AFAICS I should do this again against Linux v5.11-rc4 vanilla? > > Is this OK to you? > > > > I re-checked: > This patch was on top of Linux v5.11-rc3 and applies cleanly against > Linux v5.11-rc. > Bullshit. I will send out a v2 against Linux v5.11-rc4 - was on the wrong local Git branch. - Sedat - > Please let me know if I should adapt to a different Git tree. > > - Sedat - > > > Good hint, cannot say through which tree this should go through. > > > > - Sedat - > > > > > > jirka > > > > > > > > > tools/scripts/Makefile.include | 7 +++++++ > > > > > tools/testing/selftests/bpf/Makefile | 3 +-- > > > > > tools/testing/selftests/tc-testing/Makefile | 3 +-- > > > > > 7 files changed, 11 insertions(+), 12 deletions(-) > > > > > > > > > > diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile > > > > > index f897cb5fb12d..71c14efa6e91 100644 > > > > > --- a/tools/bpf/bpftool/Makefile > > > > > +++ b/tools/bpf/bpftool/Makefile > > > > > > > > SNIP > > > >
diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile index f897cb5fb12d..71c14efa6e91 100644 --- a/tools/bpf/bpftool/Makefile +++ b/tools/bpf/bpftool/Makefile @@ -75,8 +75,6 @@ endif INSTALL ?= install RM ?= rm -f -CLANG ?= clang -LLVM_STRIP ?= llvm-strip FEATURE_USER = .bpftool FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \ diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile index 4d5ca54fcd4c..9d9fb6209be1 100644 --- a/tools/bpf/runqslower/Makefile +++ b/tools/bpf/runqslower/Makefile @@ -3,9 +3,6 @@ include ../../scripts/Makefile.include OUTPUT ?= $(abspath .output)/ -CLANG ?= clang -LLC ?= llc -LLVM_STRIP ?= llvm-strip BPFTOOL_OUTPUT := $(OUTPUT)bpftool/ DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)bpftool BPFTOOL ?= $(DEFAULT_BPFTOOL) diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 89ba522e377d..3e55edb3ea54 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -1,4 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 +include ../../scripts/Makefile.include + FILES= \ test-all.bin \ test-backtrace.bin \ @@ -76,8 +78,6 @@ FILES= \ FILES := $(addprefix $(OUTPUT),$(FILES)) PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config -LLVM_CONFIG ?= llvm-config -CLANG ?= clang all: $(FILES) diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 62f3deb1d3a8..f4df7534026d 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -176,7 +176,6 @@ endef LD += $(EXTRA_LDFLAGS) PKG_CONFIG = $(CROSS_COMPILE)pkg-config -LLVM_CONFIG ?= llvm-config RM = rm -f LN = ln -f diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include index 1358e89cdf7d..4255e71f72b7 100644 --- a/tools/scripts/Makefile.include +++ b/tools/scripts/Makefile.include @@ -69,6 +69,13 @@ HOSTCC ?= gcc HOSTLD ?= ld endif +# Some tools require Clang, LLC and/or LLVM utils +CLANG ?= clang +LLC ?= llc +LLVM_CONFIG ?= llvm-config +LLVM_OBJCOPY ?= llvm-objcopy +LLVM_STRIP ?= llvm-strip + ifeq ($(CC_NO_CLANG), 1) EXTRA_WARNINGS += -Wstrict-aliasing=3 endif diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index c51df6b91bef..952e2bc5f3bc 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 include ../../../../scripts/Kbuild.include include ../../../scripts/Makefile.arch +include ../../../scripts/Makefile.include CXX ?= $(CROSS_COMPILE)g++ @@ -18,8 +19,6 @@ ifneq ($(wildcard $(GENHDR)),) GENFLAGS := -DHAVE_GENHDR endif -CLANG ?= clang -LLVM_OBJCOPY ?= llvm-objcopy BPF_GCC ?= $(shell command -v bpf-gcc;) SAN_CFLAGS ?= CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) $(SAN_CFLAGS) \ diff --git a/tools/testing/selftests/tc-testing/Makefile b/tools/testing/selftests/tc-testing/Makefile index 91fee5c43274..4d639279f41e 100644 --- a/tools/testing/selftests/tc-testing/Makefile +++ b/tools/testing/selftests/tc-testing/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 +include ../../../scripts/Makefile.include top_srcdir = $(abspath ../../../..) APIDIR := $(top_scrdir)/include/uapi @@ -7,8 +8,6 @@ TEST_GEN_FILES = action.o KSFT_KHDR_INSTALL := 1 include ../lib.mk -CLANG ?= clang -LLC ?= llc PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) ifeq ($(PROBE),)
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 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. Some personal notes: 1. I have NOT tested with cross-toolchain for other archs (cross compiler/linker etc.). 2. This patch is on top of Linux v5.11-rc3. I hope to get some feedback from especially Linux-bpf folks. Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> --- tools/bpf/bpftool/Makefile | 2 -- tools/bpf/runqslower/Makefile | 3 --- tools/build/feature/Makefile | 4 ++-- tools/perf/Makefile.perf | 1 - tools/scripts/Makefile.include | 7 +++++++ tools/testing/selftests/bpf/Makefile | 3 +-- tools/testing/selftests/tc-testing/Makefile | 3 +-- 7 files changed, 11 insertions(+), 12 deletions(-)