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bpf: fix broken inclusion of system include 

Commit d82c5884c6 ("treewide: make use of new toolchain define")
changed $(TOOLCHAIN_DIR)/include to the new variable
$(TOOLCHAIN_INC_DIRS) that now can contain multiple entry.

Because of this only the first include in $(TOOLCHAIN_INC_DIRS) was
actually included with -isystem, making the other producing warning with
ignored inputs.

Fix this by parsing each entry in $(TOOLCHAIN_INC_DIRS) and adding the
-isystem prefix to correctly include them in the BPF_KERNEL_INCLUDE.

Fixes: d82c5884c6 ("treewide: make use of new toolchain define")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi 2024-05-03 14:49:58 +02:00
parent 23de46c913
commit fc221b065a
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GPG Key ID: AC001D09ADBFEAD7
1 changed files with 1 additions and 1 deletions
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2
include/bpf.mk
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@ -33,7 +33,7 @@ BPF_TARGET:=bpf$(if $(CONFIG_BIG_ENDIAN),eb,el)
BPF_HEADERS_DIR:=$(STAGING_DIR)/bpf-headers
BPF_KERNEL_INCLUDE := \
-nostdinc -isystem $(TOOLCHAIN_INC_DIRS) \
-nostdinc $(patsubst %,-isystem %,$(TOOLCHAIN_INC_DIRS)) \
-I$(BPF_HEADERS_DIR)/arch/$(BPF_KARCH)/include \
-I$(BPF_HEADERS_DIR)/arch/$(BPF_KARCH)/include/asm/mach-generic \
-I$(BPF_HEADERS_DIR)/arch/$(BPF_KARCH)/include/generated \