Makefile: Prepare for clang EFI builds
clang complains about GNU extensions such as variable sized types not
being at the end of structs unless -Wno-gnu is used. We may
eventually want -Wno-gnu, but for now let's just handle the warnings
as they come. Add -Wno-gnu-variable-sized-type-not-at-end to avoid
the warning issued for the initrd_dev_path struct. (Eliminating the
warning is preferred to reworking the struct, because the
implementation is imported verbatim from Linux.)
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>
diff --git a/Makefile b/Makefile
index 3d51cb7..7471f72 100644
--- a/Makefile
+++ b/Makefile
@@ -50,6 +50,8 @@
# EFI applications use PIC as they are loaded to dynamic addresses, not a fixed
# starting address
EFI_CFLAGS += -fPIC
+# Avoid error with the initrd_dev_path struct
+EFI_CFLAGS += -Wno-gnu-variable-sized-type-not-at-end
# Create shared library
EFI_LDFLAGS := -Bsymbolic -shared -nostdlib
endif
