[openwrt/openwrt] bpf: fix llvm version check

[LEDE Commits]

robimarko pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/f61fb07675631c5615f816479cc638c7b1d7acd4

commit f61fb07675631c5615f816479cc638c7b1d7acd4
Author: Konstantin Demin <rockdrilla at gmail.com>
AuthorDate: Thu Jun 13 20:56:31 2024 +0300

    bpf: fix llvm version check
    
    - specify CC target explicitly
    
    Signed-off-by: Konstantin Demin <rockdrilla at gmail.com>
    Link: https://github.com/openwrt/openwrt/pull/15703
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 include/bpf.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/bpf.mk b/include/bpf.mk
index 85c3edb4c7..2b7aa8512c 100644
--- a/include/bpf.mk
+++ b/include/bpf.mk
@@ -66,7 +66,7 @@ BPF_CFLAGS := \
 
 ifneq ($(CONFIG_HAS_BPF_TOOLCHAIN),)
 ifeq ($(DUMP)$(filter download refresh,$(MAKECMDGOALS)),)
-  CLANG_VER:=$(shell $(CLANG) -dM -E - < /dev/null | grep __clang_major__ | cut -d' ' -f3)
+  CLANG_VER:=$(shell $(CLANG) --target=$(BPF_TARGET) -dM -E - < /dev/null | grep __clang_major__ | cut -d' ' -f3)
   CLANG_VER_VALID:=$(shell [ "$(CLANG_VER)" -ge "$(CLANG_MIN_VER)" ] && echo 1 )
   ifeq ($(CLANG_VER_VALID),)
     $(error ERROR: LLVM/clang version too old. Minimum required: $(CLANG_MIN_VER), found: $(CLANG_VER))