Building tools/resolve_btfids requires libelf and zlib. Without this build fix, the kernel build system will not find these dependencies.
Signed-off-by: Stijn Tintel <st...@linux-ipv6.be> --- ...resolve_btfids-Build-with-host-flags.patch | 54 +++++++++++++++++++ ...resolve_btfids-Build-with-host-flags.patch | 54 +++++++++++++++++++ 2 files changed, 108 insertions(+) create mode 100644 target/linux/generic/backport-5.10/200-v5.18-tools-resolve_btfids-Build-with-host-flags.patch create mode 100644 target/linux/generic/backport-5.15/200-v5.18-tools-resolve_btfids-Build-with-host-flags.patch diff --git a/target/linux/generic/backport-5.10/200-v5.18-tools-resolve_btfids-Build-with-host-flags.patch b/target/linux/generic/backport-5.10/200-v5.18-tools-resolve_btfids-Build-with-host-flags.patch new file mode 100644 index 0000000000..489575fb35 --- /dev/null +++ b/target/linux/generic/backport-5.10/200-v5.18-tools-resolve_btfids-Build-with-host-flags.patch @@ -0,0 +1,54 @@ +From cdbc4e3399ed8cdcf234a85f7a2482b622379e82 Mon Sep 17 00:00:00 2001 +From: Connor O'Brien <conn...@google.com> +Date: Wed, 12 Jan 2022 00:25:03 +0000 +Subject: [PATCH] tools/resolve_btfids: Build with host flags + +resolve_btfids is built using $(HOSTCC) and $(HOSTLD) but does not +pick up the corresponding flags. As a result, host-specific settings +(such as a sysroot specified via HOSTCFLAGS=--sysroot=..., or a linker +specified via HOSTLDFLAGS=-fuse-ld=...) will not be respected. + +Fix this by setting CFLAGS to KBUILD_HOSTCFLAGS and LDFLAGS to +KBUILD_HOSTLDFLAGS. + +Also pass the cflags through to libbpf via EXTRA_CFLAGS to ensure that +the host libbpf is built with flags consistent with resolve_btfids. + +Signed-off-by: Connor O'Brien <conn...@google.com> +Signed-off-by: Andrii Nakryiko <and...@kernel.org> +Acked-by: Song Liu <songliubrav...@fb.com> +Link: https://lore.kernel.org/bpf/20220112002503.115968-1-conn...@google.com +(cherry picked from commit 0e3a1c902ffb56e9fe4416f0cd382c97b09ecbf6) +Signed-off-by: Stijn Tintel <st...@linux-ipv6.be> +--- + tools/bpf/resolve_btfids/Makefile | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile +index af9f9d3534c9..e727058bfe15 100644 +--- a/tools/bpf/resolve_btfids/Makefile ++++ b/tools/bpf/resolve_btfids/Makefile +@@ -23,6 +23,8 @@ CC = $(HOSTCC) + LD = $(HOSTLD) + ARCH = $(HOSTARCH) + RM ?= rm ++CFLAGS := $(KBUILD_HOSTCFLAGS) ++LDFLAGS := $(KBUILD_HOSTLDFLAGS) + + OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/ + +@@ -45,9 +47,9 @@ $(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd + $(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@) + + $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)/libbpf +- $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@) ++ $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(abspath $(dir $@))/ EXTRA_CFLAGS="$(CFLAGS)" $(abspath $@) + +-CFLAGS := -g \ ++CFLAGS += -g \ + -I$(srctree)/tools/include \ + -I$(srctree)/tools/include/uapi \ + -I$(LIBBPF_SRC) \ +-- +2.35.1 + diff --git a/target/linux/generic/backport-5.15/200-v5.18-tools-resolve_btfids-Build-with-host-flags.patch b/target/linux/generic/backport-5.15/200-v5.18-tools-resolve_btfids-Build-with-host-flags.patch new file mode 100644 index 0000000000..489575fb35 --- /dev/null +++ b/target/linux/generic/backport-5.15/200-v5.18-tools-resolve_btfids-Build-with-host-flags.patch @@ -0,0 +1,54 @@ +From cdbc4e3399ed8cdcf234a85f7a2482b622379e82 Mon Sep 17 00:00:00 2001 +From: Connor O'Brien <conn...@google.com> +Date: Wed, 12 Jan 2022 00:25:03 +0000 +Subject: [PATCH] tools/resolve_btfids: Build with host flags + +resolve_btfids is built using $(HOSTCC) and $(HOSTLD) but does not +pick up the corresponding flags. As a result, host-specific settings +(such as a sysroot specified via HOSTCFLAGS=--sysroot=..., or a linker +specified via HOSTLDFLAGS=-fuse-ld=...) will not be respected. + +Fix this by setting CFLAGS to KBUILD_HOSTCFLAGS and LDFLAGS to +KBUILD_HOSTLDFLAGS. + +Also pass the cflags through to libbpf via EXTRA_CFLAGS to ensure that +the host libbpf is built with flags consistent with resolve_btfids. + +Signed-off-by: Connor O'Brien <conn...@google.com> +Signed-off-by: Andrii Nakryiko <and...@kernel.org> +Acked-by: Song Liu <songliubrav...@fb.com> +Link: https://lore.kernel.org/bpf/20220112002503.115968-1-conn...@google.com +(cherry picked from commit 0e3a1c902ffb56e9fe4416f0cd382c97b09ecbf6) +Signed-off-by: Stijn Tintel <st...@linux-ipv6.be> +--- + tools/bpf/resolve_btfids/Makefile | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile +index af9f9d3534c9..e727058bfe15 100644 +--- a/tools/bpf/resolve_btfids/Makefile ++++ b/tools/bpf/resolve_btfids/Makefile +@@ -23,6 +23,8 @@ CC = $(HOSTCC) + LD = $(HOSTLD) + ARCH = $(HOSTARCH) + RM ?= rm ++CFLAGS := $(KBUILD_HOSTCFLAGS) ++LDFLAGS := $(KBUILD_HOSTLDFLAGS) + + OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/ + +@@ -45,9 +47,9 @@ $(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd + $(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@) + + $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)/libbpf +- $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@) ++ $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(abspath $(dir $@))/ EXTRA_CFLAGS="$(CFLAGS)" $(abspath $@) + +-CFLAGS := -g \ ++CFLAGS += -g \ + -I$(srctree)/tools/include \ + -I$(srctree)/tools/include/uapi \ + -I$(LIBBPF_SRC) \ +-- +2.35.1 + -- 2.35.1 _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
