bpf: fix broken inclusion of system include

Commit d82c588 ("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 $(TOOLCHAIN_INC_DIRS) and adding the -isystem prefix to correctly include them in the BPF_KERNEL_INCLUDE. Fixes: d82c588 ("treewide: make use of new toolchain define") Signed-off-by: Christian Marangi <[email protected]>
lede-project · May 3, 2024 · fc221b0 · fc221b0
1 parent 23de46c
commit fc221b0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/bpf.mk b/include/bpf.mk
@@ -33,7 +33,7 @@ BPF_TARGET:=bpf$(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 \