Changeset 11580 for trunk/source/lisp-kernel/linuxppc/Makefile

Timestamp:

Jan 5, 2009, 5:36:35 AM (12 years ago)

Author:

gb

Message:

Set executable_start to 64K (not 4K). Some Linux kernels get upset
by the presence of code < 64K, and only calm down if the vm.mmap_min_addr
sysctl variable is set to 0. If we move code out of the low 64K (and
remap_spjump() at startup), the sysctl variable can be set to 4K, which
offers some protection against theoretical exploits.

Disable format warnings.

File:

• trunk/source/lisp-kernel/linuxppc/Makefile (modified) (2 diffs)

trunk/source/lisp-kernel/linuxppc/Makefile

@@ -26 +26 @@
 CDEBUG = -g
 COPT = -O2
+# Once in a while, -Wformat says something useful.  The odds are against that,
+# however.
+WFORMAT = -Wno-format
 
 # If the linker supports a "--hash-style=" option, use traditional
@@ -53 +56 @@
         $(M4) $(M4FLAGS) -I../ $< | $(AS) $(A32) $(ASFLAGS) -o $@
 .c.o:
-        $(CC) -c $< $(CDEFINES) $(CDEBUG) $(COPT) $(PPC32) -o $@
+        $(CC) -c $< $(CDEFINES) $(CDEBUG) $(COPT) $(WFORMAT) $(PPC32) -o $@
 
 SPOBJ = pad.o ppc-spjump.o ppc-spentry.o ppc-subprims.o