[build] Disable array bounds checking for GCC

The array bounds checker on GCC 12 and newer reports a very large
number of false positives that result in build failures.  In
particular, accesses through pointers to zero-length arrays (such as
those used by the linker table mechanism in include/ipxe/tables.h) are
reported as errors, contrary to the GCC documentation.

Work around this GCC issue by unconditionally disabling the warning.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/Makefile.housekeeping b/src/Makefile.housekeeping
index 9bf34b2e698f3959c4fc003476aaebe970e67f35..61a9cf07e04707ae48a2b6ac3e9f3695503d511a 100644 (file)
--- a/src/Makefile.housekeeping
+++ b/src/Makefile.housekeeping
@@ -461,8 +461,8 @@ CFLAGS              += -g
 ifeq ($(CCTYPE),gcc)
 CFLAGS         += -ffreestanding
 CFLAGS         += -fcommon
-CFLAGS         += -Wall -W -Wformat-nonliteral
-HOST_CFLAGS    += -Wall -W -Wformat-nonliteral
+CFLAGS         += -Wall -W -Wformat-nonliteral -Wno-array-bounds
+HOST_CFLAGS    += -Wall -W -Wformat-nonliteral -Wno-array-bounds
 endif
 CFLAGS         += $(WORKAROUND_CFLAGS) $(EXTRA_CFLAGS)
 ASFLAGS                += $(WORKAROUND_ASFLAGS) $(EXTRA_ASFLAGS)